Merge topic 'update-librhash'

6a5a9278fa librhash: Update build within CMake for rhash 1.4.4 54eafb156f librhash: aligned_alloc is not available with IBM XLClang on Linux 838bdb4b37 librhash: aligned_alloc is not available on Solaris 33e9e3438c librhash: Remove source fragments not needed for CMake 15bb13bc51 Merge branch 'upstream-librhash' into update-librhash 71d86c4e98 librhash 2023-07-14 (cfe77846) 1fb7ebeb4d librhash: Update import script to get rhash 1.4.4 Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !9012
2026-01-08 23:00:07 -06:00 · 2023-12-04 14:41:32 +00:00
parent 4b13f8866d 6a5a9278fa
commit b79d2f6f15
18 changed files with 875 additions and 272 deletions
--- a/Utilities/Scripts/update-librhash.bash
+++ b/Utilities/Scripts/update-librhash.bash
@@ -8,7 +8,7 @@ readonly name="librhash"
 readonly ownership="librhash upstream <kwrobot@kitware.com>"
 readonly subtree="Utilities/cmlibrhash"
 readonly repo="https://github.com/rhash/rhash.git"
-readonly tag="v1.3.9"
+readonly tag="v1.4.4"
 readonly shortlog=false
 readonly paths="
  COPYING
@@ -31,6 +31,7 @@ readonly paths="
  librhash/sha512.c
  librhash/sha512.h
  librhash/ustd.h
+  librhash/util.c
  librhash/util.h
 "

--- a/Utilities/cmlibrhash/CMakeLists.txt
+++ b/Utilities/cmlibrhash/CMakeLists.txt
@@ -28,6 +28,7 @@ set(librhash_sources
  librhash/sha512.c
  librhash/sha512.h
  librhash/ustd.h
+  librhash/util.c
  librhash/util.h
  )

@@ -36,5 +37,6 @@ include_directories(
  )

 add_library(cmlibrhash ${librhash_sources})
+target_compile_definitions(cmlibrhash PRIVATE NO_IMPORT_EXPORT)

 install(FILES COPYING DESTINATION ${CMAKE_DOC_DIR}/cmlibrhash)
--- a/Utilities/cmlibrhash/librhash/algorithms.c
+++ b/Utilities/cmlibrhash/librhash/algorithms.c
@@ -14,16 +14,15 @@
 * PERFORMANCE OF THIS SOFTWARE.
 */

-#include <stdio.h>
-#include <assert.h>
-
+#include "algorithms.h"
 #include "byte_order.h"
 #include "rhash.h"
-#include "algorithms.h"

-/* header files of all supported hash sums */
+/* header files of all supported hash functions */
 #if 0
 #include "aich.h"
+#include "blake2b.h"
+#include "blake2s.h"
 #include "crc32.h"
 #include "ed2k.h"
 #include "edonr.h"
@@ -47,6 +46,11 @@
 #include "whirlpool.h"
 #endif

+#ifdef USE_OPENSSL
+# include "plug_openssl.h"
+#endif /* USE_OPENSSL */
+#include <assert.h>
+
 #ifdef USE_OPENSSL
 /* note: BTIH and AICH depends on the used SHA1 algorithm */
 # define NEED_OPENSSL_INIT (RHASH_MD4 | RHASH_MD5 | \
@@ -55,6 +59,7 @@
 #else
 # define NEED_OPENSSL_INIT 0
 #endif /* USE_OPENSSL */
+
 #ifdef GENERATE_GOST94_LOOKUP_TABLE
 # define NEED_GOST94_INIT (RHASH_GOST94 | RHASH_GOST94_CRYPTOPRO)
 #else
@@ -85,10 +90,10 @@ rhash_info info_md5 = { RHASH_MD5, F_LE32, 16, "MD5", "md5" };
 rhash_info info_sha1 = { RHASH_SHA1,      F_BE32, 20, "SHA1", "sha1" };
 #if 0
 rhash_info info_tiger = { RHASH_TIGER,    F_LE64, 24, "TIGER", "tiger" };
-rhash_info info_tth  = { RHASH_TTH,       F_BS32, 24, "TTH", "tree:tiger" };
-rhash_info info_btih = { RHASH_BTIH,      0, 20, "BTIH", "btih" };
+rhash_info info_tth  = { RHASH_TTH,       F_BS32 | F_SPCEXP, 24, "TTH", "tree:tiger" };
+rhash_info info_btih = { RHASH_BTIH,      F_SPCEXP, 20, "BTIH", "btih" };
 rhash_info info_ed2k = { RHASH_ED2K,      F_LE32, 16, "ED2K", "ed2k" };
-rhash_info info_aich = { RHASH_AICH,      F_BS32, 20, "AICH", "aich" };
+rhash_info info_aich = { RHASH_AICH,      F_BS32 | F_SPCEXP, 20, "AICH", "aich" };
 rhash_info info_whirlpool = { RHASH_WHIRLPOOL, F_BE64, 64, "WHIRLPOOL", "whirlpool" };
 rhash_info info_rmd160 = { RHASH_RIPEMD160,  F_LE32, 20, "RIPEMD-160", "ripemd160" };
 rhash_info info_gost12_256 = { RHASH_GOST12_256, F_LE64, 32, "GOST12-256", "gost12-256" };
@@ -106,6 +111,8 @@ rhash_info info_sha512 = { RHASH_SHA512,     F_BE64, 64, "SHA-512", "sha512" };
 #if 0
 rhash_info info_edr256 = { RHASH_EDONR256,   F_LE32, 32, "EDON-R256", "edon-r256" };
 rhash_info info_edr512 = { RHASH_EDONR512,   F_LE64, 64, "EDON-R512", "edon-r512" };
+rhash_info info_blake2s = { RHASH_BLAKE2S,   F_LE32, 32, "BLAKE2S", "blake2s" };
+rhash_info info_blake2b = { RHASH_BLAKE2B,   F_LE64, 64, "BLAKE2B", "blake2b" };
 #endif
 rhash_info info_sha3_224 = { RHASH_SHA3_224, F_LE64, 28, "SHA3-224", "sha3-224" };
 rhash_info info_sha3_256 = { RHASH_SHA3_256, F_LE64, 32, "SHA3-256", "sha3-256" };
@@ -113,14 +120,13 @@ rhash_info info_sha3_384 = { RHASH_SHA3_384, F_LE64, 48, "SHA3-384", "sha3-384"
 rhash_info info_sha3_512 = { RHASH_SHA3_512, F_LE64, 64, "SHA3-512", "sha3-512" };

 /* some helper macros */
-#define dgshft(name) (((char*)&((name##_ctx*)0)->hash) - (char*)0)
-#define dgshft2(name, field) (((char*)&((name##_ctx*)0)->field) - (char*)0)
+#define dgshft(name) ((uintptr_t)((char*)&((name##_ctx*)0)->hash))
+#define dgshft2(name, field) ((uintptr_t)((char*)&((name##_ctx*)0)->field))
 #define ini(name) ((pinit_t)(name##_init))
 #define upd(name) ((pupdate_t)(name##_update))
 #define fin(name) ((pfinal_t)(name##_final))
 #define iuf(name) ini(name), upd(name), fin(name)
 #define iuf2(name1, name2) ini(name1), upd(name2), fin(name2)
-#define diuf(name) dgshft(name), ini(name), upd(name), fin(name)

 /* information about all supported hash functions */
 rhash_hash_info rhash_hash_info_default[RHASH_HASH_COUNT] =
@@ -160,6 +166,8 @@ rhash_hash_info rhash_hash_info_default[RHASH_HASH_COUNT] =
 	{ &info_crc32c, sizeof(uint32_t), 0, iuf(rhash_crc32c), 0 }, /* 32 bit */
 	{ &info_snf128, sizeof(snefru_ctx), dgshft(snefru), iuf2(rhash_snefru128, rhash_snefru), 0 }, /* 128 bit */
 	{ &info_snf256, sizeof(snefru_ctx), dgshft(snefru), iuf2(rhash_snefru256, rhash_snefru), 0 }, /* 256 bit */
+	{ &info_blake2s, sizeof(blake2s_ctx),  dgshft(blake2s), iuf(rhash_blake2s), 0 },  /* 256 bit */
+	{ &info_blake2b, sizeof(blake2b_ctx),  dgshft(blake2b), iuf(rhash_blake2b), 0 },  /* 512 bit */
 #endif
 };

@@ -280,3 +288,76 @@ static void rhash_crc32c_final(uint32_t* crc32c, unsigned char* result)
 #endif
 }
 #endif
+
+#if !defined(NO_IMPORT_EXPORT)
+/**
+ * Export a hash function context to a memory region,
+ * or calculate the size required for context export.
+ *
+ * @param hash_id identifier of the hash function
+ * @param ctx the algorithm context containing current hashing state
+ * @param out pointer to the memory region or NULL
+ * @param size size of memory region
+ * @return the size of the exported data on success, 0 on fail.
+ */
+size_t rhash_export_alg(unsigned hash_id, const void* ctx, void* out, size_t size)
+{
+	switch (hash_id)
+	{
+		case RHASH_TTH:
+			return rhash_tth_export((const tth_ctx*)ctx, out, size);
+		case RHASH_AICH:
+			return rhash_aich_export((const aich_ctx*)ctx, out, size);
+	}
+	return 0;
+}
+
+/**
+ * Import a hash function context from a memory region.
+ *
+ * @param hash_id identifier of the hash function
+ * @param ctx pointer to the algorithm context
+ * @param in pointer to the data to import
+ * @param size size of data to import
+ * @return the size of the imported data on success, 0 on fail.
+ */
+size_t rhash_import_alg(unsigned hash_id, void* ctx, const void* in, size_t size)
+{
+	switch (hash_id)
+	{
+		case RHASH_TTH:
+			return rhash_tth_import((tth_ctx*)ctx, in, size);
+		case RHASH_AICH:
+			return rhash_aich_import((aich_ctx*)ctx, in, size);
+	}
+	return 0;
+}
+#endif /* !defined(NO_IMPORT_EXPORT) */
+
+#ifdef USE_OPENSSL
+void rhash_load_sha1_methods(rhash_hashing_methods* methods, int methods_type)
+{
+	int use_openssl;
+	switch (methods_type) {
+		case METHODS_OPENSSL:
+			use_openssl = 1;
+			break;
+		case METHODS_SELECTED:
+			assert(rhash_info_table[3].info->hash_id == RHASH_SHA1);
+			use_openssl = ARE_OPENSSL_METHODS(rhash_info_table[3]);
+			break;
+		default:
+			use_openssl = 0;
+			break;
+	}
+	if (use_openssl) {
+		methods->init = rhash_ossl_sha1_init();
+		methods->update = rhash_ossl_sha1_update();
+		methods->final = rhash_ossl_sha1_final();
+	} else {
+		methods->init = (pinit_t)&rhash_sha1_init;
+		methods->update = (pupdate_t)&rhash_sha1_update;
+		methods->final = (pfinal_t)&rhash_sha1_final;
+	}
+}
+#endif
--- a/Utilities/cmlibrhash/librhash/algorithms.h
+++ b/Utilities/cmlibrhash/librhash/algorithms.h
@@ -47,10 +47,10 @@ typedef struct rhash_info
 	const char* magnet_name;
 } rhash_info;

-typedef void (*pinit_t)(void*);
+typedef void (*pinit_t)(void* ctx);
 typedef void (*pupdate_t)(void* ctx, const void* msg, size_t size);
-typedef void (*pfinal_t)(void*, unsigned char*);
-typedef void (*pcleanup_t)(void*);
+typedef void (*pfinal_t)(void* ctx, unsigned char* result);
+typedef void (*pcleanup_t)(void* ctx);

 /**
 * Information about a hash function
@@ -83,11 +83,11 @@ typedef struct rhash_context_ext
 	struct rhash_context rc;
 	unsigned hash_vector_size; /* number of contained hash sums */
 	unsigned flags;
-	unsigned state;
-	void* callback;
+	volatile unsigned state;
+	rhash_callback_t callback;
 	void* callback_data;
 	void* bt_ctx;
-	rhash_vector_item vector[1]; /* contexts of contained hash sums */
+	rhash_vector_item vector[]; /* contexts of contained hash sums */
 } rhash_context_ext;

 extern rhash_hash_info rhash_hash_info_default[RHASH_HASH_COUNT];
@@ -125,8 +125,9 @@ extern rhash_info info_edr512;

 /* rhash_info flags */
 #define F_BS32 1   /* default output in base32 */
-#define F_SWAP32 2 /* Big endian flag */
+#define F_SWAP32 2 /* big endian flag */
 #define F_SWAP64 4
+#define F_SPCEXP 8 /* needs special import/export logic */

 /* define endianness flags */
 #if IS_LITTLE_ENDIAN
@@ -144,10 +145,35 @@ extern rhash_info info_edr512;
 void rhash_init_algorithms(unsigned mask);
 const rhash_info* rhash_info_by_id(unsigned hash_id); /* get hash sum info by hash id */

+#if !defined(NO_IMPORT_EXPORT)
+size_t rhash_export_alg(unsigned hash_id, const void* ctx, void* out, size_t size);
+size_t rhash_import_alg(unsigned hash_id, void* ctx, const void* in, size_t size);
+#endif /* !defined(NO_IMPORT_EXPORT) */
+
 #if defined(OPENSSL_RUNTIME) && !defined(USE_OPENSSL)
 # define USE_OPENSSL
 #endif

+#ifdef USE_OPENSSL
+typedef struct rhash_hashing_methods
+{
+	pinit_t    init;
+	pupdate_t  update;
+	pfinal_t   final;
+} rhash_hashing_methods;
+
+enum rhash_methods_type
+{
+	METHODS_RHASH,
+	METHODS_OPENSSL,
+	METHODS_SELECTED,
+};
+
+void rhash_load_sha1_methods(rhash_hashing_methods* methods, int methods_type);
+
+#define ARE_OPENSSL_METHODS(methods) ((methods).init != (void (*)(void*))&rhash_sha1_init)
+#endif
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif /* __cplusplus */
--- a/Utilities/cmlibrhash/librhash/byte_order.c
+++ b/Utilities/cmlibrhash/librhash/byte_order.c
@@ -74,7 +74,7 @@ unsigned rhash_ctz(unsigned x)
 void rhash_swap_copy_str_to_u32(void* to, int index, const void* from, size_t length)
 {
 	/* if all pointers and length are 32-bits aligned */
-	if ( 0 == (( (int)((char*)to - (char*)0) | ((char*)from - (char*)0) | index | length ) & 3) ) {
+	if ( 0 == (( (uintptr_t)to | (uintptr_t)from | (uintptr_t)index | length ) & 3) ) {
 		/* copy memory as 32-bit words */
 		const uint32_t* src = (const uint32_t*)from;
 		const uint32_t* end = (const uint32_t*)((const char*)src + length);
@@ -101,7 +101,7 @@ void rhash_swap_copy_str_to_u32(void* to, int index, const void* from, size_t le
 void rhash_swap_copy_str_to_u64(void* to, int index, const void* from, size_t length)
 {
 	/* if all pointers and length are 64-bits aligned */
-	if ( 0 == (( (int)((char*)to - (char*)0) | ((char*)from - (char*)0) | index | length ) & 7) ) {
+	if ( 0 == (( (uintptr_t)to | (uintptr_t)from | (uintptr_t)index | length ) & 7) ) {
 		/* copy aligned memory block as 64-bit integers */
 		const uint64_t* src = (const uint64_t*)from;
 		const uint64_t* end = (const uint64_t*)((const char*)src + length);
@@ -124,7 +124,7 @@ void rhash_swap_copy_str_to_u64(void* to, int index, const void* from, size_t le
 void rhash_swap_copy_u64_to_str(void* to, const void* from, size_t length)
 {
 	/* if all pointers and length are 64-bits aligned */
-	if ( 0 == (( (int)((char*)to - (char*)0) | ((char*)from - (char*)0) | length ) & 7) ) {
+	if ( 0 == (( (uintptr_t)to | (uintptr_t)from | length ) & 7) ) {
 		/* copy aligned memory block as 64-bit integers */
 		const uint64_t* src = (const uint64_t*)from;
 		const uint64_t* end = (const uint64_t*)((const char*)src + length);
--- a/Utilities/cmlibrhash/librhash/byte_order.h
+++ b/Utilities/cmlibrhash/librhash/byte_order.h
@@ -76,14 +76,15 @@ extern "C" {
 #ifdef RHASH_BYTE_ORDER
 #elif defined(CPU_IA32) || defined(CPU_X64) || defined(__ia64) || defined(__ia64__) || \
      defined(__alpha__) || defined(_M_ALPHA) || defined(vax) || defined(MIPSEL) || \
-      defined(_ARM_) || defined(__arm__)
+      defined(_ARM_) || defined(__arm__) || defined(_M_ARM64) || defined(_M_ARM64EC) || \
+      defined(__loongarch64)
 #  define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_LE
 #elif defined(__sparc) || defined(__sparc__) || defined(sparc) || \
      defined(_ARCH_PPC) || defined(_ARCH_PPC64) || defined(_POWER) || \
      defined(__POWERPC__) || defined(POWERPC) || defined(__powerpc) || \
      defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || \
      defined(__hpux)  || defined(_MIPSEB) || defined(mc68000) || \
-      defined(__s390__) || defined(__s390x__) || defined(sel)
+      defined(__s390__) || defined(__s390x__) || defined(sel) || defined(__hppa__)
 # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_BE
 #else
 #  error "Can't detect CPU architechture"
@@ -97,8 +98,8 @@ extern "C" {
 # define __has_builtin(x) 0
 #endif

-#define IS_ALIGNED_32(p) (0 == (3 & ((const char*)(p) - (const char*)0)))
-#define IS_ALIGNED_64(p) (0 == (7 & ((const char*)(p) - (const char*)0)))
+#define IS_ALIGNED_32(p) (0 == (3 & (uintptr_t)(p)))
+#define IS_ALIGNED_64(p) (0 == (7 & (uintptr_t)(p)))

 #if defined(_MSC_VER)
 #define ALIGN_ATTR(n) __declspec(align(n))
@@ -179,9 +180,9 @@ static RHASH_INLINE uint64_t bswap_64(uint64_t x)
 # define le2me_32(x) bswap_32(x)
 # define le2me_64(x) bswap_64(x)

-# define be32_copy(to, index, from, length) memcpy((to) + (index), (from), (length))
+# define be32_copy(to, index, from, length) memcpy((char*)(to) + (index), (from), (length))
 # define le32_copy(to, index, from, length) rhash_swap_copy_str_to_u32((to), (index), (from), (length))
-# define be64_copy(to, index, from, length) memcpy((to) + (index), (from), (length))
+# define be64_copy(to, index, from, length) memcpy((char*)(to) + (index), (from), (length))
 # define le64_copy(to, index, from, length) rhash_swap_copy_str_to_u64((to), (index), (from), (length))
 # define me64_to_be_str(to, from, length) memcpy((to), (from), (length))
 # define me64_to_le_str(to, from, length) rhash_swap_copy_u64_to_str((to), (from), (length))
@@ -193,9 +194,9 @@ static RHASH_INLINE uint64_t bswap_64(uint64_t x)
 # define le2me_64(x) (x)

 # define be32_copy(to, index, from, length) rhash_swap_copy_str_to_u32((to), (index), (from), (length))
-# define le32_copy(to, index, from, length) memcpy((to) + (index), (from), (length))
+# define le32_copy(to, index, from, length) memcpy((char*)(to) + (index), (from), (length))
 # define be64_copy(to, index, from, length) rhash_swap_copy_str_to_u64((to), (index), (from), (length))
-# define le64_copy(to, index, from, length) memcpy((to) + (index), (from), (length))
+# define le64_copy(to, index, from, length) memcpy((char*)(to) + (index), (from), (length))
 # define me64_to_be_str(to, from, length) rhash_swap_copy_u64_to_str((to), (from), (length))
 # define me64_to_le_str(to, from, length) memcpy((to), (from), (length))
 #endif /* IS_BIG_ENDIAN */
--- a/Utilities/cmlibrhash/librhash/hex.c
+++ b/Utilities/cmlibrhash/librhash/hex.c
@@ -14,7 +14,7 @@
 * PERFORMANCE OF THIS SOFTWARE.
 */
 #include "hex.h"
-#include <assert.h>
+#include "util.h"
 #include <ctype.h>
 #include <string.h>

@@ -113,8 +113,8 @@ size_t rhash_base64_url_encoded_helper(char* dst, const unsigned char* src, size
 	#ifdef __clang_analyzer__
 	memset(buffer, 0, sizeof(buffer));
 	#endif
-	assert((BASE64_LENGTH(B64_CHUNK_SIZE) + 4) <= sizeof(buffer));
-	assert((B64_CHUNK_SIZE % 6) == 0);
+	RHASH_ASSERT((BASE64_LENGTH(B64_CHUNK_SIZE) + 4) <= sizeof(buffer));
+	RHASH_ASSERT((B64_CHUNK_SIZE % 6) == 0);
 	if (url_encode) {
 		size_t result_length = 0;
 		for (; length > 0; src += B64_CHUNK_SIZE) {
--- a/Utilities/cmlibrhash/librhash/md5.c
+++ b/Utilities/cmlibrhash/librhash/md5.c
@@ -19,13 +19,13 @@
 #include "md5.h"

 /**
- * Initialize context before calculaing hash.
+ * Initialize context before calculating hash.
 *
 * @param ctx context to initialize
 */
 void rhash_md5_init(md5_ctx* ctx)
 {
-	ctx->length = 0;
+	memset(ctx, 0, sizeof(*ctx));

 	/* initialize state */
 	ctx->hash[0] = 0x67452301;
@@ -170,7 +170,7 @@ void rhash_md5_update(md5_ctx* ctx, const unsigned char* msg, size_t size)
 	/* fill partial block */
 	if (index) {
 		unsigned left = md5_block_size - index;
-		le32_copy((char*)ctx->message, index, msg, (size < left ? size : left));
+		le32_copy(ctx->message, index, msg, (size < left ? size : left));
 		if (size < left) return;

 		/* process partial block */
--- a/Utilities/cmlibrhash/librhash/md5.h
+++ b/Utilities/cmlibrhash/librhash/md5.h
@@ -22,7 +22,7 @@ typedef struct md5_ctx

 void rhash_md5_init(md5_ctx* ctx);
 void rhash_md5_update(md5_ctx* ctx, const unsigned char* msg, size_t size);
-void rhash_md5_final(md5_ctx* ctx, unsigned char result[16]);
+void rhash_md5_final(md5_ctx* ctx, unsigned char* result);

 #ifdef __cplusplus
 } /* extern "C" */
--- a/Utilities/cmlibrhash/librhash/rhash.c
+++ b/Utilities/cmlibrhash/librhash/rhash.c
@@ -38,15 +38,24 @@
 #include <string.h>

 #define STATE_ACTIVE  0xb01dbabe
-#define STATE_STOPED  0xdeadbeef
+#define STATE_STOPPED 0xdeadbeef
 #define STATE_DELETED 0xdecea5ed
+#define IS_BAD_STATE(s) ((s) != STATE_ACTIVE && (s) != STATE_STOPPED)
 #define RCTX_AUTO_FINAL 0x1
 #define RCTX_FINALIZED  0x2
 #define RCTX_FINALIZED_MASK (RCTX_AUTO_FINAL | RCTX_FINALIZED)
 #define RHPR_FORMAT (RHPR_RAW | RHPR_HEX | RHPR_BASE32 | RHPR_BASE64)
 #define RHPR_MODIFIER (RHPR_UPPERCASE | RHPR_URLENCODE | RHPR_REVERSE)

-void rhash_library_init(void)
+#define HAS_ZERO_OR_ONE_BIT(id) (((id) & ((id) - 1)) == 0)
+#define IS_VALID_HASH_MASK(bitmask) ((bitmask) != 0 && ((bitmask) & ~RHASH_ALL_HASHES) == 0)
+#define IS_VALID_HASH_ID(id) (IS_VALID_HASH_MASK(id) && HAS_ZERO_OR_ONE_BIT(id))
+
+/* each hash function context must be aligned to DEFAULT_ALIGNMENT bytes */
+#define GET_CTX_ALIGNED(size) ALIGN_SIZE_BY((size), DEFAULT_ALIGNMENT)
+#define GET_EXPORT_ALIGNED(size) ALIGN_SIZE_BY((size), 8)
+
+RHASH_API void rhash_library_init(void)
 {
 	rhash_init_algorithms(RHASH_ALL_HASHES);
 #ifdef USE_OPENSSL
@@ -54,103 +63,120 @@ void rhash_library_init(void)
 #endif
 }

-int RHASH_API rhash_count(void)
+RHASH_API int rhash_count(void)
 {
 	return rhash_info_size;
 }

 /* LOW-LEVEL LIBRHASH INTERFACE */

-RHASH_API rhash rhash_init(unsigned hash_id)
+/**
+ * Allocate and initialize RHash context for calculating a single or multiple hash functions.
+ * The context after usage must be freed by calling rhash_free().
+ *
+ * @param count the size of the hash_ids array, the count must be greater than zero
+ * @param hash_ids array of identifiers of hash functions. Each element must
+ *        be an identifier of one hash function
+ * @param need_init initialize context for each hash function
+ * @return initialized rhash context, NULL on fail with error code stored in errno
+ */
+static rhash_context_ext* rhash_alloc_multi(size_t count, const unsigned hash_ids[], int need_init)
 {
-	unsigned tail_bit_index; /* index of hash_id trailing bit */
-	unsigned num = 0;        /* number of hashes to compute */
+	struct rhash_hash_info* info;   /* hash algorithm information */
 	rhash_context_ext* rctx = NULL; /* allocated rhash context */
-	size_t hash_size_sum = 0;   /* size of hash contexts to store in rctx */
-
-	unsigned i, bit_index, id;
-	struct rhash_hash_info* info;
-	size_t aligned_size;
+	const size_t header_size = GET_CTX_ALIGNED(sizeof(rhash_context_ext) + sizeof(rhash_vector_item) * count);
+	size_t ctx_size_sum = 0;   /* size of hash contexts to store in rctx */
+	size_t i;
 	char* phash_ctx;
+	unsigned hash_bitmask = 0;

-	hash_id &= RHASH_ALL_HASHES;
-	if (hash_id == 0) {
+	if (count < 1) {
 		errno = EINVAL;
 		return NULL;
 	}
-
-	tail_bit_index = rhash_ctz(hash_id); /* get trailing bit index */
-	assert(tail_bit_index < RHASH_HASH_COUNT);
-
-	id = 1 << tail_bit_index;
-
-	if (hash_id == id) {
-		/* handle the most common case of only one hash */
-		num = 1;
-		info = &rhash_info_table[tail_bit_index];
-		hash_size_sum = info->context_size;
-	} else {
-		/* another case: hash_id contains several hashes */
-		for (bit_index = tail_bit_index; id <= hash_id; bit_index++, id = id << 1) {
-			assert(id != 0);
-			assert(bit_index < RHASH_HASH_COUNT);
-			info = &rhash_info_table[bit_index];
-			if (hash_id & id) {
-				/* align sizes by 8 bytes */
-				aligned_size = (info->context_size + 7) & ~7;
-				hash_size_sum += aligned_size;
-				num++;
-			}
+	for (i = 0; i < count; i++) {
+		unsigned hash_index;
+		if (!IS_VALID_HASH_ID(hash_ids[i])) {
+			errno = EINVAL;
+			return NULL;
 		}
-		assert(num > 1);
+		hash_bitmask |= hash_ids[i];
+		hash_index = rhash_ctz(hash_ids[i]);
+		assert(hash_index < RHASH_HASH_COUNT); /* correct until extended hash_ids are supported */
+		info = &rhash_info_table[hash_index];
+
+		/* align context sizes and sum up */
+		ctx_size_sum += GET_CTX_ALIGNED(info->context_size);
 	}

-	/* align the size of the rhash context common part */
-	aligned_size = ((offsetof(rhash_context_ext, vector) + sizeof(rhash_vector_item) * num) + 7) & ~7;
-	assert(aligned_size >= sizeof(rhash_context_ext));
-
-	/* allocate rhash context with enough memory to store contexts of all used hashes */
-	rctx = (rhash_context_ext*)malloc(aligned_size + hash_size_sum);
-	if (rctx == NULL) return NULL;
+	/* allocate rhash context with enough memory to store contexts of all selected hash functions */
+	rctx = (rhash_context_ext*)rhash_aligned_alloc(DEFAULT_ALIGNMENT, header_size + ctx_size_sum);
+	if (rctx == NULL)
+		return NULL;

 	/* initialize common fields of the rhash context */
-	memset(rctx, 0, sizeof(rhash_context_ext));
-	rctx->rc.hash_id = hash_id;
+	memset(rctx, 0, header_size);
+	rctx->rc.hash_id = hash_bitmask;
 	rctx->flags = RCTX_AUTO_FINAL; /* turn on auto-final by default */
 	rctx->state = STATE_ACTIVE;
-	rctx->hash_vector_size = num;
+	rctx->hash_vector_size = count;

-	/* aligned hash contexts follows rctx->vector[num] in the same memory block */
-	phash_ctx = (char*)rctx + aligned_size;
-	assert(phash_ctx >= (char*)&rctx->vector[num]);
+	/* calculate aligned pointer >= (&rctx->vector[count]) */
+	phash_ctx = (char*)rctx + header_size;
+	assert(phash_ctx >= (char*)&rctx->vector[count]);
+	assert(phash_ctx < ((char*)&rctx->vector[count] + DEFAULT_ALIGNMENT));

-	/* initialize context for every hash in a loop */
-	for (bit_index = tail_bit_index, id = 1 << tail_bit_index, i = 0;
-		id <= hash_id; bit_index++, id = id << 1)
-	{
-		/* check if a hash function with given id shall be included into rctx */
-		if ((hash_id & id) != 0) {
-			info = &rhash_info_table[bit_index];
-			assert(info->context_size > 0);
-			assert(((phash_ctx - (char*)0) & 7) == 0); /* hash context is aligned */
-			assert(info->init != NULL);
+	for (i = 0; i < count; i++) {
+		unsigned hash_index = rhash_ctz(hash_ids[i]);
+		info = &rhash_info_table[hash_index];
+		assert(info->context_size > 0);
+		assert(info->init != NULL);
+		assert(IS_PTR_ALIGNED_BY(phash_ctx, DEFAULT_ALIGNMENT)); /* hash context is aligned */

-			rctx->vector[i].hash_info = info;
-			rctx->vector[i].context = phash_ctx;
+		rctx->vector[i].hash_info = info;
+		rctx->vector[i].context = phash_ctx;

 #if 0
-			/* BTIH initialization is complex, save pointer for later */
-			if ((id & RHASH_BTIH) != 0) rctx->bt_ctx = phash_ctx;
+		/* BTIH initialization is a bit complicated, so store the context pointer for later usage */
+		if ((hash_ids[i] & RHASH_BTIH) != 0)
+			rctx->bt_ctx = phash_ctx;
 #endif
-			phash_ctx += (info->context_size + 7) & ~7;
+		phash_ctx += GET_CTX_ALIGNED(info->context_size);

-			/* initialize the i-th hash context */
+		/* initialize the i-th hash context */
+		if (need_init)
 			info->init(rctx->vector[i].context);
-			i++;
-		}
 	}
+	return rctx;
+}

-	return &rctx->rc; /* return allocated and initialized rhash context */
+RHASH_API rhash rhash_init_multi(size_t count, const unsigned hash_ids[])
+{
+	rhash_context_ext* ectx = rhash_alloc_multi(count, hash_ids, 1);
+	return &ectx->rc; /* return initialized rhash context */
+}
+
+RHASH_API rhash rhash_init(unsigned hash_id)
+{
+	if (!IS_VALID_HASH_MASK(hash_id)) {
+		errno = EINVAL;
+		return NULL;
+	}
+	if (HAS_ZERO_OR_ONE_BIT(hash_id)) {
+		return rhash_init_multi(1, &hash_id);
+	} else {
+		/* handle the depricated case, when hash_id is a bitwise union of several hash function identifiers */
+		size_t count;
+		unsigned hash_ids[32];
+		unsigned id = hash_id & -hash_id; /* get the trailing bit */
+		for (count = 0; id <= hash_id; id = id << 1) {
+			assert(id != 0);
+			if (hash_id & id)
+				hash_ids[count++] = id;
+		}
+		assert(count > 1);
+		return rhash_init_multi(count, hash_ids);
+	}
 }

 void rhash_free(rhash ctx)
@@ -159,7 +185,6 @@ void rhash_free(rhash ctx)
 	unsigned i;

 	if (ctx == 0) return;
-	assert(ectx->hash_vector_size <= RHASH_HASH_COUNT);
 	ectx->state = STATE_DELETED; /* mark memory block as being removed */

 	/* clean the hash functions, which require additional clean up */
@@ -169,8 +194,7 @@ void rhash_free(rhash ctx)
 			info->cleanup(ectx->vector[i].context);
 		}
 	}
-
-	free(ectx);
+	rhash_aligned_free(ectx);
 }

 RHASH_API void rhash_reset(rhash ctx)
@@ -238,6 +262,161 @@ RHASH_API int rhash_final(rhash ctx, unsigned char* first_result)
 	return 0; /* no error processing at the moment */
 }

+/**
+ * Header block for rhash context import/export.
+ */
+typedef struct export_header
+{
+	uint32_t state;
+	uint16_t hash_vector_size;
+	uint16_t flags;
+	uint64_t msg_size;
+} export_header;
+
+/**
+ * Process export error. Returns 0 and set errno to EINVAL.
+ *
+ * @return NULL
+ */
+static size_t export_error_einval(void)
+{
+	errno = EINVAL;
+	return 0;
+}
+
+/**
+ * Process import error. Returns NULL and set errno to EINVAL.
+ *
+ * @return NULL
+ */
+static rhash import_error_einval(void)
+{
+	errno = EINVAL;
+	return NULL;
+}
+
+RHASH_API size_t rhash_export(rhash ctx, void* out, size_t size)
+{
+#if !defined(NO_IMPORT_EXPORT)
+	size_t export_size;
+	size_t i;
+	rhash_context_ext* const ectx = (rhash_context_ext*)ctx;
+	export_header* header = (export_header*)out;
+	unsigned* hash_ids = NULL;
+	if (!ctx || (out && size < sizeof(export_header)) || IS_BAD_STATE(ectx->state))
+		return export_error_einval();
+	export_size = sizeof(export_header) + sizeof(unsigned) * ectx->hash_vector_size;
+	if (out != NULL) {
+		memset(out, 0, size);
+		header->state = ectx->state;
+		header->hash_vector_size = (uint16_t)(ectx->hash_vector_size);
+		header->flags = (uint16_t)(ectx->flags);
+		header->msg_size = ctx->msg_size;
+		hash_ids = (unsigned*)(void*)(header + 1);
+	}
+	for (i = 0; i < ectx->hash_vector_size; i++) {
+		void* src_context = ectx->vector[i].context;
+		struct rhash_hash_info* hash_info = ectx->vector[i].hash_info;
+		unsigned is_special = (hash_info->info->flags & F_SPCEXP);
+		size_t item_size;
+		if (out != NULL) {
+			if (size <= export_size)
+				return export_error_einval();
+			hash_ids[i] = hash_info->info->hash_id;
+			if (is_special) {
+				char* dst_item;
+				size_t left_size;
+				export_size = GET_EXPORT_ALIGNED(export_size);
+				dst_item = (char*)out + export_size;
+				left_size = size - export_size;
+				item_size = rhash_export_alg(hash_info->info->hash_id,
+					src_context, dst_item, left_size);
+				if (!item_size)
+					return export_error_einval();
+			} else {
+				char* dst_item = (char*)out + export_size;
+				item_size = hash_info->context_size;
+				if (size < (export_size + item_size))
+					return export_error_einval();
+				memcpy(dst_item, src_context, item_size);
+			}
+		} else {
+			if (is_special) {
+				export_size = GET_EXPORT_ALIGNED(export_size);
+				item_size = rhash_export_alg(
+					hash_info->info->hash_id, src_context, NULL, 0);
+			} else
+				item_size = hash_info->context_size;
+		}
+		export_size += item_size;
+	}
+	if (export_size < size)
+		return export_error_einval();
+	return export_size;
+#else
+	return export_error_einval();
+#endif /* !defined(NO_IMPORT_EXPORT) */
+}
+
+RHASH_API rhash rhash_import(const void* in, size_t size)
+{
+#if !defined(NO_IMPORT_EXPORT)
+	const export_header* header = (const export_header*)in;
+	size_t i;
+	size_t imported_size;
+	const unsigned* hash_ids;
+	const char* src_item;
+	rhash_context_ext* ectx;
+	if (!header || IS_BAD_STATE(header->state) || size < sizeof(export_header))
+		return import_error_einval();
+	imported_size = sizeof(export_header) + sizeof(unsigned) * header->hash_vector_size;
+	if (!header->hash_vector_size || size < imported_size)
+		return import_error_einval();
+	hash_ids = (const unsigned*)(const void*)(header + 1);
+	ectx = (rhash_context_ext*)rhash_alloc_multi(header->hash_vector_size, hash_ids, 0);
+	if (!ectx)
+		return NULL; /* errno must be set by the previous function */
+	ectx->state = header->state;
+	ectx->hash_vector_size = header->hash_vector_size;
+	ectx->flags = header->flags;
+	ectx->rc.msg_size = header->msg_size;
+	for (i = 0; i < ectx->hash_vector_size; i++) {
+		void* dst_context = ectx->vector[i].context;
+		struct rhash_hash_info* hash_info = ectx->vector[i].hash_info;
+		unsigned is_special = (hash_info->info->flags & F_SPCEXP);
+		size_t item_size;
+
+		if (is_special) {
+			size_t left_size;
+			imported_size = GET_EXPORT_ALIGNED(imported_size);
+			src_item = (const char*)in + imported_size;
+			left_size = size - imported_size;
+			assert(size >= imported_size);
+			item_size = rhash_import_alg(hash_ids[i], dst_context, src_item, left_size);
+			imported_size += item_size;
+			if (!item_size || size < imported_size) {
+				ectx->hash_vector_size = i + 1; /* clean only initialized contextes */
+				rhash_free(&ectx->rc);
+				return import_error_einval();
+			}
+		} else {
+			src_item = (const char*)in + imported_size;
+			item_size = hash_info->context_size;
+			imported_size += item_size;
+			if (size < imported_size) {
+				ectx->hash_vector_size = i + 1;
+				rhash_free(&ectx->rc);
+				return import_error_einval();
+			}
+			memcpy(dst_context, src_item, item_size);
+		}
+	}
+	return &ectx->rc;
+#else
+	return import_error_einval();
+#endif /* !defined(NO_IMPORT_EXPORT) */
+}
+
 /**
 * Store digest for given hash_id.
 * If hash_id is zero, function stores digest for a hash with the lowest id found in the context.
@@ -290,7 +469,7 @@ static void rhash_put_digest(rhash ctx, unsigned hash_id, unsigned char* result)

 RHASH_API void rhash_set_callback(rhash ctx, rhash_callback_t callback, void* callback_data)
 {
-	((rhash_context_ext*)ctx)->callback = (void*)callback;
+	((rhash_context_ext*)ctx)->callback = callback;
 	((rhash_context_ext*)ctx)->callback_data = callback_data;
 }

@@ -313,26 +492,21 @@ RHASH_API int rhash_file_update(rhash ctx, FILE* fd)
 	rhash_context_ext* const ectx = (rhash_context_ext*)ctx;
 	const size_t block_size = 8192;
 	unsigned char* buffer;
-	unsigned char* pmem;
-	size_t length = 0, align8;
+	size_t length = 0;
 	int res = 0;
-	if (ectx->state != STATE_ACTIVE) return 0; /* do nothing if canceled */
-
+	if (ectx->state != STATE_ACTIVE)
+		return 0; /* do nothing if canceled */
 	if (ctx == NULL) {
 		errno = EINVAL;
 		return -1;
 	}
-
-	pmem = (unsigned char*)malloc(block_size + 8);
-	if (!pmem) return -1; /* errno is set to ENOMEM according to UNIX 98 */
-
-	align8 = ((unsigned char*)0 - pmem) & 7;
-	buffer = pmem + align8;
+	buffer = (unsigned char*)rhash_aligned_alloc(DEFAULT_ALIGNMENT, block_size);
+	if (!buffer)
+		return -1; /* errno is set to ENOMEM according to UNIX 98 */

 	while (!feof(fd)) {
-		/* stop if canceled */
-		if (ectx->state != STATE_ACTIVE) break;
-
+		if (ectx->state != STATE_ACTIVE)
+			break; /* stop if canceled */
 		length = fread(buffer, 1, block_size, fd);

 		if (ferror(fd)) {
@@ -346,11 +520,16 @@ RHASH_API int rhash_file_update(rhash ctx, FILE* fd)
 			}
 		}
 	}
-
-	free(buffer);
+	rhash_aligned_free(buffer);
 	return res;
 }

+#ifdef _WIN32
+# define FOPEN_MODE "rbS"
+#else
+# define FOPEN_MODE "rb"
+#endif
+
 RHASH_API int rhash_file(unsigned hash_id, const char* filepath, unsigned char* result)
 {
 	FILE* fd;
@@ -363,17 +542,19 @@ RHASH_API int rhash_file(unsigned hash_id, const char* filepath, unsigned char*
 		return -1;
 	}

-	if ((fd = fopen(filepath, "rb")) == NULL) return -1;
+	fd = fopen(filepath, FOPEN_MODE);
+	if (!fd)
+		return -1;

-	if ((ctx = rhash_init(hash_id)) == NULL) {
+	ctx = rhash_init(hash_id);
+	if (!ctx) {
 		fclose(fd);
 		return -1;
 	}
-
 	res = rhash_file_update(ctx, fd); /* hash the file */
 	fclose(fd);
-
-	rhash_final(ctx, result);
+	if (res >= 0)
+		rhash_final(ctx, result);
 	rhash_free(ctx);
 	return res;
 }
@@ -393,17 +574,19 @@ RHASH_API int rhash_wfile(unsigned hash_id, const wchar_t* filepath, unsigned ch
 		return -1;
 	}

-	if ((fd = _wfsopen(filepath, L"rb", _SH_DENYWR)) == NULL) return -1;
+	fd = _wfsopen(filepath, L"rbS", _SH_DENYWR);
+	if (!fd)
+		return -1;

-	if ((ctx = rhash_init(hash_id)) == NULL) {
+	ctx = rhash_init(hash_id);
+	if (!ctx) {
 		fclose(fd);
 		return -1;
 	}
-
 	res = rhash_file_update(ctx, fd); /* hash the file */
 	fclose(fd);
-
-	rhash_final(ctx, result);
+	if (res >= 0)
+		rhash_final(ctx, result);
 	rhash_free(ctx);
 	return res;
 }
@@ -576,7 +759,7 @@ size_t rhash_print_bytes(char* output, const unsigned char* bytes, size_t size,
 	return result_length;
 }

-size_t RHASH_API rhash_print(char* output, rhash context, unsigned hash_id, int flags)
+RHASH_API size_t rhash_print(char* output, rhash context, unsigned hash_id, int flags)
 {
 	const rhash_info* info;
 	unsigned char digest[80];
@@ -654,6 +837,7 @@ RHASH_API rhash_uptr_t rhash_transmit(unsigned msg_id, void* dst, rhash_uptr_t l
 {
 	/* for messages working with rhash context */
 	rhash_context_ext* const ctx = (rhash_context_ext*)dst;
+	(void)rdata;

 	switch (msg_id) {
 	case RMSG_GET_CONTEXT:
@@ -669,11 +853,11 @@ RHASH_API rhash_uptr_t rhash_transmit(unsigned msg_id, void* dst, rhash_uptr_t l

 	case RMSG_CANCEL:
 		/* mark rhash context as canceled, in a multithreaded program */
-		atomic_compare_and_swap(&ctx->state, STATE_ACTIVE, STATE_STOPED);
+		atomic_compare_and_swap(&ctx->state, STATE_ACTIVE, STATE_STOPPED);
 		return 0;

 	case RMSG_IS_CANCELED:
-		return (ctx->state == STATE_STOPED);
+		return (ctx->state == STATE_STOPPED);

 	case RMSG_GET_FINALIZED:
 		return ((ctx->flags & RCTX_FINALIZED) != 0);
@@ -695,6 +879,9 @@ RHASH_API rhash_uptr_t rhash_transmit(unsigned msg_id, void* dst, rhash_uptr_t l
 	case RMSG_GET_OPENSSL_AVAILABLE_MASK:
 		return rhash_get_openssl_available_hash_mask();

+	case RMSG_GET_LIBRHASH_VERSION:
+		return RHASH_XVERSION;
+
 	default:
 		return RHASH_ERROR; /* unknown message */
 	}
--- a/Utilities/cmlibrhash/librhash/rhash.h
+++ b/Utilities/cmlibrhash/librhash/rhash.h
@@ -52,9 +52,11 @@ enum rhash_ids
 	RHASH_CRC32C    = 0x4000000,
 	RHASH_SNEFRU128 = 0x8000000,
 	RHASH_SNEFRU256 = 0x10000000,
+	RHASH_BLAKE2S   = 0x20000000,
+	RHASH_BLAKE2B   = 0x40000000,

 	/**
-	 * The bit-mask containing all supported hashe functions.
+	 * The bit-mask containing all supported hash functions.
 	 */
 	RHASH_ALL_HASHES = RHASH_CRC32 | RHASH_CRC32C | RHASH_MD4 | RHASH_MD5 |
 		RHASH_ED2K | RHASH_SHA1 |RHASH_TIGER | RHASH_TTH |
@@ -63,14 +65,18 @@ enum rhash_ids
 		RHASH_HAS160 | RHASH_SNEFRU128 | RHASH_SNEFRU256 |
 		RHASH_SHA224 | RHASH_SHA256 | RHASH_SHA384 | RHASH_SHA512 |
 		RHASH_SHA3_224 | RHASH_SHA3_256 | RHASH_SHA3_384 | RHASH_SHA3_512 |
-		RHASH_EDONR256 | RHASH_EDONR512,
+		RHASH_EDONR256 | RHASH_EDONR512 | RHASH_BLAKE2S | RHASH_BLAKE2B,

 	RHASH_GOST = RHASH_GOST94, /* deprecated constant name */
 	RHASH_GOST_CRYPTOPRO = RHASH_GOST94_CRYPTOPRO, /* deprecated constant name */
+
+	/* bit-flag for extra hash identifiers */
+	RHASH_EXTENDED_BIT = (int)0x80000000,
+
 	/**
 	 * The number of supported hash functions.
 	 */
-	RHASH_HASH_COUNT = 29
+	RHASH_HASH_COUNT = 31
 #else
 	RHASH_MD5        = 0x01,
 	RHASH_SHA1       = 0x02,
@@ -100,7 +106,7 @@ enum rhash_ids
 /**
 * The rhash context structure contains contexts for several hash functions.
 */
-typedef struct rhash_context
+struct rhash_context
 {
 	/**
 	 * The size of the hashed message.
@@ -108,10 +114,10 @@ typedef struct rhash_context
 	unsigned long long msg_size;

 	/**
-	 * The bit-mask containing identifiers of the hashes being calculated.
+	 * The bit-mask containing identifiers of the hash functions being calculated.
 	 */
 	unsigned hash_id;
-} rhash_context;
+};

 #ifndef LIBRHASH_RHASH_CTX_DEFINED
 #define LIBRHASH_RHASH_CTX_DEFINED
@@ -135,34 +141,34 @@ RHASH_API void rhash_library_init(void);
 /* HIGH-LEVEL LIBRHASH INTERFACE */

 /**
- * Compute a hash of the given message.
+ * Compute a message digest of the given message.
 *
- * @param hash_id id of hash sum to compute
+ * @param hash_id id of message digest to compute
 * @param message the message to process
 * @param length message length
- * @param result buffer to receive binary hash string
+ * @param result buffer to receive the binary message digest value
 * @return 0 on success, -1 on error
 */
 RHASH_API int rhash_msg(unsigned hash_id, const void* message, size_t length, unsigned char* result);

 /**
- * Compute a single hash for given file.
+ * Compute a single message digest for the given file.
 *
- * @param hash_id id of hash sum to compute
- * @param filepath path to the file to hash
- * @param result buffer to receive hash value with the lowest requested id
- * @return 0 on success, -1 on error and errno is set
+ * @param hash_id id of hash function to compute
+ * @param filepath path to the file to process
+ * @param result buffer to receive message digest
+ * @return 0 on success, -1 on fail with error code stored in errno
 */
 RHASH_API int rhash_file(unsigned hash_id, const char* filepath, unsigned char* result);

 #ifdef _WIN32
 /**
- * Compute a single hash for given file (Windows-specific function).
+ * Compute a single message digest for the given file (Windows-specific function).
 *
- * @param hash_id id of hash sum to compute
- * @param filepath path to the file to hash
- * @param result buffer to receive hash value with the lowest requested id
- * @return 0 on success, -1 on error, -1 on error and errno is set
+ * @param hash_id id of hash function to compute
+ * @param filepath path to the file to process
+ * @param result buffer to receive the binary message digest value
+ * @return 0 on success, -1 on fail with error code stored in errno
 */
 RHASH_API int rhash_wfile(unsigned hash_id, const wchar_t* filepath, unsigned char* result);
 #endif
@@ -171,45 +177,59 @@ RHASH_API int rhash_wfile(unsigned hash_id, const wchar_t* filepath, unsigned ch
 /* LOW-LEVEL LIBRHASH INTERFACE */

 /**
- * Allocate and initialize RHash context for calculating hash(es).
- * After initializing rhash_update()/rhash_final() functions should be used.
- * Then the context must be freed by calling rhash_free().
+ * Allocate and initialize RHash context for calculating a single or multiple hash functions.
+ * The context after usage must be freed by calling rhash_free().
 *
- * @param hash_id union of bit flags, containing ids of hashes to calculate.
- * @return initialized rhash context, NULL on error and errno is set
+ * @param count the size of the hash_ids array, the count must be greater than zero
+ * @param hash_ids array of identifiers of hash functions. Each element must
+ *        be an identifier of one hash function
+ * @return initialized rhash context, NULL on fail with error code stored in errno
+ */
+RHASH_API rhash rhash_init_multi(size_t count, const unsigned hash_ids[]);
+
+/**
+ * Allocate and initialize RHash context for calculating a single hash function.
+ *
+ * This function also supports a depricated way to initialize rhash context
+ * for multiple hash functions, by passing a bitwise union of several hash
+ * identifiers. Only single-bit identifiers (not greater than RHASH_SNEFRU256)
+ * can be used in such bitwise union.
+ *
+ * @param hash_id identifier of a hash function
+ * @return initialized rhash context, NULL on fail with error code stored in errno
 */
 RHASH_API rhash rhash_init(unsigned hash_id);

 /**
- * Calculate hashes of message.
+ * Calculate message digests of message.
 * Can be called repeatedly with chunks of the message to be hashed.
 *
 * @param ctx the rhash context
 * @param message message chunk
 * @param length length of the message chunk
- * @return 0 on success; On fail return -1 and set errno
+ * @return 0 on success, -1 on fail with error code stored in errno
 */
 RHASH_API int rhash_update(rhash ctx, const void* message, size_t length);

 /**
- * Hash a file or stream. Multiple hashes can be computed.
+ * Process a file or stream. Multiple message digests can be computed.
 * First, inintialize ctx parameter with rhash_init() before calling
 * rhash_file_update(). Then use rhash_final() and rhash_print()
- * to retrive hash values. Finaly call rhash_free() on ctx
+ * to retrive message digests. Finaly call rhash_free() on ctx
 * to free allocated memory or call rhash_reset() to reuse ctx.
 *
 * @param ctx rhash context
 * @param fd descriptor of the file to hash
- * @return 0 on success, -1 on error and errno is set
+ * @return 0 on success, -1 on fail with error code stored in errno
 */
 RHASH_API int rhash_file_update(rhash ctx, FILE* fd);

 /**
- * Finalize hash calculation and optionally store the first hash.
+ * Finalize message digest calculation and optionally store the first message digest.
 *
 * @param ctx the rhash context
- * @param first_result optional buffer to store a calculated hash with the lowest available id
- * @return 0 on success; On fail return -1 and set errno
+ * @param first_result optional buffer to store a calculated message digest with the lowest available id
+ * @return 0 on success, -1 on fail with error code stored in errno
 */
 RHASH_API int rhash_final(rhash ctx, unsigned char* first_result);

@@ -224,7 +244,7 @@ RHASH_API void rhash_reset(rhash ctx);
 /**
 * Free RHash context memory.
 *
- * @param ctx the context to free.
+ * @param ctx the context to free
 */
 RHASH_API void rhash_free(rhash ctx);

@@ -238,8 +258,33 @@ RHASH_API void rhash_free(rhash ctx);
 * @param callback pointer to the callback function
 * @param callback_data pointer to data passed to the callback
 */
-RHASH_API void  rhash_set_callback(rhash ctx, rhash_callback_t callback, void* callback_data);
+RHASH_API void rhash_set_callback(rhash ctx, rhash_callback_t callback, void* callback_data);

+/**
+ * Export RHash context data to a memory region.
+ * The size of the memory required for export
+ * is returned by rhash_export(ctx, NULL, 0).
+ *
+ * @param ctx the rhash context to export
+ * @param out pointer to a memory region, or NULL
+ * @param size the size of a memory region
+ * @return the size of exported data on success export.
+ *         The size of memory required for export if out is NULL.
+ *         0 on fail with error code stored in errno
+ */
+RHASH_API size_t rhash_export(rhash ctx, void* out, size_t size);
+
+/**
+ * Import rhash context from a memory region.
+ * The returned rhash context must be released after usage
+ * by rhash_free().
+ *
+ * @param in pointer to a memory region
+ * @param size the size of a memory region
+ * @return imported rhash context on success,
+ *         NULL on fail with error code stored in errno
+ */
+RHASH_API rhash rhash_import(const void* in, size_t size);

 /* INFORMATION FUNCTIONS */

@@ -248,37 +293,37 @@ RHASH_API void  rhash_set_callback(rhash ctx, rhash_callback_t callback, void* c
 *
 * @return the number of supported hash functions
 */
-RHASH_API int  rhash_count(void); /* number of supported hashes */
+RHASH_API int rhash_count(void);

 /**
- * Returns size of binary digest for given hash algorithm.
+ * Returns the size of binary message digest for given hash function.
 *
- * @param hash_id the id of hash algorithm
- * @return digest size in bytes
+ * @param hash_id the id of the hash function
+ * @return the size of the message digest in bytes
 */
-RHASH_API int  rhash_get_digest_size(unsigned hash_id); /* size of binary message digest */
+RHASH_API int rhash_get_digest_size(unsigned hash_id);

 /**
- * Returns length of digest hash string in default output format.
+ * Returns the length of message digest string in its default output format.
 *
- * @param hash_id the id of hash algorithm
- * @return the length of hash string
+ * @param hash_id the id of the hash function
+ * @return the length of the message digest
 */
-RHASH_API int  rhash_get_hash_length(unsigned hash_id); /* length of formatted hash string */
+RHASH_API int rhash_get_hash_length(unsigned hash_id);

 /**
- * Detect default digest output format for given hash algorithm.
+ * Detect default message digest output format for the given hash algorithm.
 *
 * @param hash_id the id of hash algorithm
 * @return 1 for base32 format, 0 for hexadecimal
 */
-RHASH_API int  rhash_is_base32(unsigned hash_id); /* default digest output format */
+RHASH_API int rhash_is_base32(unsigned hash_id);

 /**
- * Returns a name of given hash algorithm.
+ * Returns the name of the given hash function.
 *
- * @param hash_id the id of hash algorithm
- * @return algorithm name
+ * @param hash_id id of the hash function
+ * @return hash function name
 */
 RHASH_API const char* rhash_get_name(unsigned hash_id); /* get hash function name */

@@ -287,7 +332,7 @@ RHASH_API const char* rhash_get_name(unsigned hash_id); /* get hash function nam
 * Such magnet_name is used to generate a magnet link of the form
 * urn:&lt;magnet_name&gt;=&lt;hash_value&gt;.
 *
- * @param hash_id the id of hash algorithm
+ * @param hash_id id of the hash algorithm
 * @return name
 */
 RHASH_API const char* rhash_get_magnet_name(unsigned hash_id); /* get name part of magnet urn */
@@ -296,7 +341,7 @@ RHASH_API const char* rhash_get_magnet_name(unsigned hash_id); /* get name part

 #if 0
 /**
- * Flags for printing a hash sum.
+ * Flags for printing a message digest.
 */
 enum rhash_print_sum_flags
 {
@@ -326,7 +371,7 @@ enum rhash_print_sum_flags
 	 */
 	RHPR_UPPERCASE = 0x8,
 	/*
-	 * Reverse hash bytes. Can be used for GOST hash.
+	 * Reverse message digest bytes. Can be used for GOST hash functions.
 	 */
 	RHPR_REVERSE   = 0x10,
 	/*
@@ -346,12 +391,12 @@ enum rhash_print_sum_flags


 /**
- * Print a text presentation of a given hash sum to the specified buffer.
+ * Print to the specified buffer the text representation of the given message digest.
 *
- * @param output a buffer to print the hash to
- * @param bytes a hash sum to print
- * @param size a size of hash sum in bytes
- * @param flags  a bit-mask controlling how to format the hash sum,
+ * @param output a buffer to print the message digest to
+ * @param bytes a binary message digest to print
+ * @param size a size of the message digest in bytes
+ * @param flags  a bit-mask controlling how to format the message digest,
 *               can be a mix of the flags: RHPR_RAW, RHPR_HEX, RHPR_BASE32,
 *               RHPR_BASE64, RHPR_URLENCODE, RHPR_UPPERCASE, RHPR_REVERSE
 * @return the number of written characters
@@ -360,33 +405,33 @@ RHASH_API size_t rhash_print_bytes(char* output,
 	const unsigned char* bytes, size_t size, int flags);

 /**
- * Print text presentation of a hash sum with given hash_id to the specified
- * output buffer. If the hash_id is zero, then print the hash sum with
- * the lowest id stored in the hash context.
- * The function call fails if the context doesn't include a hash with the
+ * Print to the specified output buffer the text representation of the message digest
+ * with the given hash_id. If the hash_id is zero, then print the message digest with
+ * the lowest hash_id calculated by the hash context.
+ * The function call fails if the context doesn't include the message digest with the
 * given hash_id.
 *
- * @param output a buffer to print the hash to
- * @param ctx    algorithms state
- * @param hash_id id of the hash sum to print or 0 to print the first hash
- *                saved in the context.
- * @param flags  a bitmask controlling how to print the hash. Can contain flags
- *               RHPR_UPPERCASE, RHPR_HEX, RHPR_BASE32, RHPR_BASE64, etc.
+ * @param output a buffer to print the message digest to
+ * @param ctx     algorithms state
+ * @param hash_id id of the message digest to print or 0 to print the first
+ *                message digest saved in the context.
+ * @param flags  a bitmask controlling how to print the message digest. Can contain
+ *               flags RHPR_UPPERCASE, RHPR_HEX, RHPR_BASE32, RHPR_BASE64, etc.
 * @return the number of written characters on success or 0 on fail
 */
 RHASH_API size_t rhash_print(char* output, rhash ctx, unsigned hash_id,
 	int flags);

 /**
- * Print magnet link with given filepath and calculated hash sums into the
- * output buffer. The hash_mask can limit which hash values will be printed.
+ * Print magnet link with given filepath and calculated message digest into the
+ * output buffer. The hash_mask can limit which message digests will be printed.
 * The function returns the size of the required buffer.
 * If output is NULL the .
 *
 * @param output a string buffer to receive the magnet link or NULL
 * @param filepath the file path to be printed or NULL
 * @param context algorithms state
- * @param hash_mask bit mask of the hash sums to add to the link
+ * @param hash_mask bit mask of the message digest to add to the link
 * @param flags   can be combination of bits RHPR_UPPERCASE, RHPR_NO_MAGNET,
 *                RHPR_FILESIZE
 * @return number of written characters, including terminating '\0' on success, 0 on fail
@@ -445,19 +490,20 @@ RHASH_API rhash_uptr_t rhash_transmit(
 #define RMSG_GET_OPENSSL_MASK 11
 #define RMSG_GET_OPENSSL_SUPPORTED_MASK 12
 #define RMSG_GET_OPENSSL_AVAILABLE_MASK 13
+#define RMSG_GET_LIBRHASH_VERSION 20

 /* HELPER MACROS */

 /**
- * Get a pointer to context of the specified hash function.
+ * Get a pointer to the context of the specified hash function.
 */
 #define rhash_get_context_ptr(ctx, hash_id) RHASH_UPTR2PVOID(rhash_transmit(RMSG_GET_CONTEXT, ctx, hash_id, 0))
 /**
- * Cancel hash calculation of a file.
+ * Cancel file processing.
 */
 #define rhash_cancel(ctx) rhash_transmit(RMSG_CANCEL, ctx, 0, 0)
 /**
- * Return non-zero if hash calculation was canceled, zero otherwise.
+ * Return non-zero if a message digest calculation was canceled, zero otherwise.
 */
 #define rhash_is_canceled(ctx) rhash_transmit(RMSG_IS_CANCELED, ctx, 0, 0)
 /**
@@ -468,7 +514,7 @@ RHASH_API rhash_uptr_t rhash_transmit(
 /**
 * Turn on/off the auto-final flag for the given rhash_context. By default
 * auto-final is on, which means rhash_final is called automatically, if
- * needed when a hash value is retrieved by rhash_print call.
+ * needed when a message digest is retrieved by rhash_print call.
 */
 #define rhash_set_autofinal(ctx, on) rhash_transmit(RMSG_SET_AUTOFINAL, ctx, on, 0)

@@ -500,9 +546,13 @@ RHASH_API rhash_uptr_t rhash_transmit(
 */
 #define rhash_get_openssl_available_mask() rhash_transmit(RMSG_GET_OPENSSL_AVAILABLE_MASK, NULL, 0, 0)

+/**
+ * Return librhash version.
+ */
+#define rhash_get_version() rhash_transmit(RMSG_GET_LIBRHASH_VERSION, NULL, 0, 0)

 /**
- * Return non-zero if LibRHash hash been compiled with OpenSSL support,
+ * Return non-zero if LibRHash has been compiled with OpenSSL support,
 * and zero otherwise.
 */
 #define rhash_is_openssl_supported() (rhash_get_openssl_mask() != RHASH_ERROR)
--- a/Utilities/cmlibrhash/librhash/sha1.c
+++ b/Utilities/cmlibrhash/librhash/sha1.c
@@ -20,7 +20,7 @@
 #include "sha1.h"

 /**
- * Initialize context before calculaing hash.
+ * Initialize context before calculating hash.
 *
 * @param ctx context to initialize
 */
@@ -36,6 +36,23 @@ void rhash_sha1_init(sha1_ctx* ctx)
 	ctx->hash[4] = 0xc3d2e1f0;
 }

+/* constants for SHA1 rounds */
+static const uint32_t K0 = 0x5a827999;
+static const uint32_t K1 = 0x6ed9eba1;
+static const uint32_t K2 = 0x8f1bbcdc;
+static const uint32_t K3 = 0xca62c1d6;
+
+/* round functions for SHA1 */
+#define CHO(X,Y,Z) (((X)&(Y))|((~(X))&(Z)))
+#define PAR(X,Y,Z) ((X)^(Y)^(Z))
+#define MAJ(X,Y,Z) (((X)&(Y))|((X)&(Z))|((Y)&(Z)))
+
+#define ROUND_0(a,b,c,d,e, FF, k, w) e +=              FF(b,       c,           d    )+ROTL32(a,5)+k+w
+#define ROUND_1(a,b,c,d,e, FF, k, w) e +=              FF(b,ROTL32(c,30),       d    )+ROTL32(a,5)+k+w
+#define ROUND_2(a,b,c,d,e, FF, k, w) e +=              FF(b,ROTL32(c,30),ROTL32(d,30))+ROTL32(a,5)+k+w
+#define ROUND(a,b,c,d,e, FF, k, w)   e  = ROTL32(e,30)+FF(b,ROTL32(c,30),ROTL32(d,30))+ROTL32(a,5)+k+w
+
+
 /**
 * The core transformation. Process a 512-bit block.
 * The function has been taken from RFC 3174 with little changes.
@@ -45,21 +62,9 @@ void rhash_sha1_init(sha1_ctx* ctx)
 */
 static void rhash_sha1_process_block(unsigned* hash, const unsigned* block)
 {
-	int           t;                 /* Loop counter */
-	uint32_t      temp;              /* Temporary word value */
 	uint32_t      W[80];             /* Word sequence */
 	uint32_t      A, B, C, D, E;     /* Word buffers */

-	/* initialize the first 16 words in the array W */
-	for (t = 0; t < 16; t++) {
-		/* note: it is much faster to apply be2me here, then using be32_copy */
-		W[t] = be2me_32(block[t]);
-	}
-
-	/* initialize the rest */
-	for (t = 16; t < 80; t++) {
-		W[t] = ROTL32(W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16], 1);
-	}

 	A = hash[0];
 	B = hash[1];
@@ -67,50 +72,189 @@ static void rhash_sha1_process_block(unsigned* hash, const unsigned* block)
 	D = hash[3];
 	E = hash[4];

-	for (t = 0; t < 20; t++) {
-		/* the following is faster than ((B & C) | ((~B) & D)) */
-		temp =  ROTL32(A, 5) + (((C ^ D) & B) ^ D)
-			+ E + W[t] + 0x5A827999;
-		E = D;
-		D = C;
-		C = ROTL32(B, 30);
-		B = A;
-		A = temp;
-	}
+	/* 0..19 */
+	W[ 0] = be2me_32(block[ 0]);
+	ROUND_0(A,B,C,D,E, CHO, K0, W[ 0]);
+	W[ 1] = be2me_32(block[ 1]);
+	ROUND_1(E,A,B,C,D, CHO, K0, W[ 1]);
+	W[ 2] = be2me_32(block[ 2]);
+	ROUND_2(D,E,A,B,C, CHO, K0, W[ 2]);
+	W[ 3] = be2me_32(block[ 3]);
+	ROUND(C,D,E,A,B, CHO, K0, W[ 3]);
+	W[ 4] = be2me_32(block[ 4]);
+	ROUND(B,C,D,E,A, CHO, K0, W[ 4]);

-	for (t = 20; t < 40; t++) {
-		temp = ROTL32(A, 5) + (B ^ C ^ D) + E + W[t] + 0x6ED9EBA1;
-		E = D;
-		D = C;
-		C = ROTL32(B, 30);
-		B = A;
-		A = temp;
-	}
+	W[ 5] = be2me_32(block[ 5]);
+	ROUND(A,B,C,D,E, CHO, K0, W[ 5]);
+	W[ 6] = be2me_32(block[ 6]);
+	ROUND(E,A,B,C,D, CHO, K0, W[ 6]);
+	W[ 7] = be2me_32(block[ 7]);
+	ROUND(D,E,A,B,C, CHO, K0, W[ 7]);
+	W[ 8] = be2me_32(block[ 8]);
+	ROUND(C,D,E,A,B, CHO, K0, W[ 8]);
+	W[ 9] = be2me_32(block[ 9]);
+	ROUND(B,C,D,E,A, CHO, K0, W[ 9]);

-	for (t = 40; t < 60; t++) {
-		temp = ROTL32(A, 5) + ((B & C) | (B & D) | (C & D))
-			+ E + W[t] + 0x8F1BBCDC;
-		E = D;
-		D = C;
-		C = ROTL32(B, 30);
-		B = A;
-		A = temp;
-	}
+	W[10] = be2me_32(block[10]);
+	ROUND(A,B,C,D,E, CHO, K0, W[10]);
+	W[11] = be2me_32(block[11]);
+	ROUND(E,A,B,C,D, CHO, K0, W[11]);
+	W[12] = be2me_32(block[12]);
+	ROUND(D,E,A,B,C, CHO, K0, W[12]);
+	W[13] = be2me_32(block[13]);
+	ROUND(C,D,E,A,B, CHO, K0, W[13]);
+	W[14] = be2me_32(block[14]);
+	ROUND(B,C,D,E,A, CHO, K0, W[14]);
+
+	W[15] = be2me_32(block[15]);
+	ROUND(A,B,C,D,E, CHO, K0, W[15]);
+	W[16] = ROTL32(W[13] ^ W[ 8] ^ W[ 2] ^ W[ 0], 1);
+	ROUND(E,A,B,C,D, CHO, K0, W[16]);
+	W[17] = ROTL32(W[14] ^ W[ 9] ^ W[ 3] ^ W[ 1], 1);
+	ROUND(D,E,A,B,C, CHO, K0, W[17]);
+	W[18] = ROTL32(W[15] ^ W[10] ^ W[ 4] ^ W[ 2], 1);
+	ROUND(C,D,E,A,B, CHO, K0, W[18]);
+	W[19] = ROTL32(W[16] ^ W[11] ^ W[ 5] ^ W[ 3], 1);
+	ROUND(B,C,D,E,A, CHO, K0, W[19]);
+	/* 20..39 */
+	W[20] = ROTL32(W[17] ^ W[12] ^ W[ 6] ^ W[ 4], 1);
+	ROUND(A,B,C,D,E, PAR, K1, W[20]);
+	W[21] = ROTL32(W[18] ^ W[13] ^ W[ 7] ^ W[ 5], 1);
+	ROUND(E,A,B,C,D, PAR, K1, W[21]);
+	W[22] = ROTL32(W[19] ^ W[14] ^ W[ 8] ^ W[ 6], 1);
+	ROUND(D,E,A,B,C, PAR, K1, W[22]);
+	W[23] = ROTL32(W[20] ^ W[15] ^ W[ 9] ^ W[ 7], 1);
+	ROUND(C,D,E,A,B, PAR, K1, W[23]);
+	W[24] = ROTL32(W[21] ^ W[16] ^ W[10] ^ W[ 8], 1);
+	ROUND(B,C,D,E,A, PAR, K1, W[24]);
+
+	W[25] = ROTL32(W[22] ^ W[17] ^ W[11] ^ W[ 9], 1);
+	ROUND(A,B,C,D,E, PAR, K1, W[25]);
+	W[26] = ROTL32(W[23] ^ W[18] ^ W[12] ^ W[10], 1);
+	ROUND(E,A,B,C,D, PAR, K1, W[26]);
+	W[27] = ROTL32(W[24] ^ W[19] ^ W[13] ^ W[11], 1);
+	ROUND(D,E,A,B,C, PAR, K1, W[27]);
+	W[28] = ROTL32(W[25] ^ W[20] ^ W[14] ^ W[12], 1);
+	ROUND(C,D,E,A,B, PAR, K1, W[28]);
+	W[29] = ROTL32(W[26] ^ W[21] ^ W[15] ^ W[13], 1);
+	ROUND(B,C,D,E,A, PAR, K1, W[29]);
+
+	W[30] = ROTL32(W[27] ^ W[22] ^ W[16] ^ W[14], 1);
+	ROUND(A,B,C,D,E, PAR, K1, W[30]);
+	W[31] = ROTL32(W[28] ^ W[23] ^ W[17] ^ W[15], 1);
+	ROUND(E,A,B,C,D, PAR, K1, W[31]);
+	W[32] = ROTL32(W[29] ^ W[24] ^ W[18] ^ W[16], 1);
+	ROUND(D,E,A,B,C, PAR, K1, W[32]);
+	W[33] = ROTL32(W[30] ^ W[25] ^ W[19] ^ W[17], 1);
+	ROUND(C,D,E,A,B, PAR, K1, W[33]);
+	W[34] = ROTL32(W[31] ^ W[26] ^ W[20] ^ W[18], 1);
+	ROUND(B,C,D,E,A, PAR, K1, W[34]);
+
+	W[35] = ROTL32(W[32] ^ W[27] ^ W[21] ^ W[19], 1);
+	ROUND(A,B,C,D,E, PAR, K1, W[35]);
+	W[36] = ROTL32(W[33] ^ W[28] ^ W[22] ^ W[20], 1);
+	ROUND(E,A,B,C,D, PAR, K1, W[36]);
+	W[37] = ROTL32(W[34] ^ W[29] ^ W[23] ^ W[21], 1);
+	ROUND(D,E,A,B,C, PAR, K1, W[37]);
+	W[38] = ROTL32(W[35] ^ W[30] ^ W[24] ^ W[22], 1);
+	ROUND(C,D,E,A,B, PAR, K1, W[38]);
+	W[39] = ROTL32(W[36] ^ W[31] ^ W[25] ^ W[23], 1);
+	ROUND(B,C,D,E,A, PAR, K1, W[39]);
+	/* 40..59 */
+	W[40] = ROTL32(W[37] ^ W[32] ^ W[26] ^ W[24], 1);
+	ROUND(A,B,C,D,E, MAJ, K2, W[40]);
+	W[41] = ROTL32(W[38] ^ W[33] ^ W[27] ^ W[25], 1);
+	ROUND(E,A,B,C,D, MAJ, K2, W[41]);
+	W[42] = ROTL32(W[39] ^ W[34] ^ W[28] ^ W[26], 1);
+	ROUND(D,E,A,B,C, MAJ, K2, W[42]);
+	W[43] = ROTL32(W[40] ^ W[35] ^ W[29] ^ W[27], 1);
+	ROUND(C,D,E,A,B, MAJ, K2, W[43]);
+	W[44] = ROTL32(W[41] ^ W[36] ^ W[30] ^ W[28], 1);
+	ROUND(B,C,D,E,A, MAJ, K2, W[44]);
+
+	W[45] = ROTL32(W[42] ^ W[37] ^ W[31] ^ W[29], 1);
+	ROUND(A,B,C,D,E, MAJ, K2, W[45]);
+	W[46] = ROTL32(W[43] ^ W[38] ^ W[32] ^ W[30], 1);
+	ROUND(E,A,B,C,D, MAJ, K2, W[46]);
+	W[47] = ROTL32(W[44] ^ W[39] ^ W[33] ^ W[31], 1);
+	ROUND(D,E,A,B,C, MAJ, K2, W[47]);
+	W[48] = ROTL32(W[45] ^ W[40] ^ W[34] ^ W[32], 1);
+	ROUND(C,D,E,A,B, MAJ, K2, W[48]);
+	W[49] = ROTL32(W[46] ^ W[41] ^ W[35] ^ W[33], 1);
+	ROUND(B,C,D,E,A, MAJ, K2, W[49]);
+
+	W[50] = ROTL32(W[47] ^ W[42] ^ W[36] ^ W[34], 1);
+	ROUND(A,B,C,D,E, MAJ, K2, W[50]);
+	W[51] = ROTL32(W[48] ^ W[43] ^ W[37] ^ W[35], 1);
+	ROUND(E,A,B,C,D, MAJ, K2, W[51]);
+	W[52] = ROTL32(W[49] ^ W[44] ^ W[38] ^ W[36], 1);
+	ROUND(D,E,A,B,C, MAJ, K2, W[52]);
+	W[53] = ROTL32(W[50] ^ W[45] ^ W[39] ^ W[37], 1);
+	ROUND(C,D,E,A,B, MAJ, K2, W[53]);
+	W[54] = ROTL32(W[51] ^ W[46] ^ W[40] ^ W[38], 1);
+	ROUND(B,C,D,E,A, MAJ, K2, W[54]);
+
+	W[55] = ROTL32(W[52] ^ W[47] ^ W[41] ^ W[39], 1);
+	ROUND(A,B,C,D,E, MAJ, K2, W[55]);
+	W[56] = ROTL32(W[53] ^ W[48] ^ W[42] ^ W[40], 1);
+	ROUND(E,A,B,C,D, MAJ, K2, W[56]);
+	W[57] = ROTL32(W[54] ^ W[49] ^ W[43] ^ W[41], 1);
+	ROUND(D,E,A,B,C, MAJ, K2, W[57]);
+	W[58] = ROTL32(W[55] ^ W[50] ^ W[44] ^ W[42], 1);
+	ROUND(C,D,E,A,B, MAJ, K2, W[58]);
+	W[59] = ROTL32(W[56] ^ W[51] ^ W[45] ^ W[43], 1);
+	ROUND(B,C,D,E,A, MAJ, K2, W[59]);
+	/* 60..79 */
+	W[60] = ROTL32(W[57] ^ W[52] ^ W[46] ^ W[44], 1);
+	ROUND(A,B,C,D,E, PAR, K3, W[60]);
+	W[61] = ROTL32(W[58] ^ W[53] ^ W[47] ^ W[45], 1);
+	ROUND(E,A,B,C,D, PAR, K3, W[61]);
+	W[62] = ROTL32(W[59] ^ W[54] ^ W[48] ^ W[46], 1);
+	ROUND(D,E,A,B,C, PAR, K3, W[62]);
+	W[63] = ROTL32(W[60] ^ W[55] ^ W[49] ^ W[47], 1);
+	ROUND(C,D,E,A,B, PAR, K3, W[63]);
+	W[64] = ROTL32(W[61] ^ W[56] ^ W[50] ^ W[48], 1);
+	ROUND(B,C,D,E,A, PAR, K3, W[64]);
+
+	W[65] = ROTL32(W[62] ^ W[57] ^ W[51] ^ W[49], 1);
+	ROUND(A,B,C,D,E, PAR, K3, W[65]);
+	W[66] = ROTL32(W[63] ^ W[58] ^ W[52] ^ W[50], 1);
+	ROUND(E,A,B,C,D, PAR, K3, W[66]);
+	W[67] = ROTL32(W[64] ^ W[59] ^ W[53] ^ W[51], 1);
+	ROUND(D,E,A,B,C, PAR, K3, W[67]);
+	W[68] = ROTL32(W[65] ^ W[60] ^ W[54] ^ W[52], 1);
+	ROUND(C,D,E,A,B, PAR, K3, W[68]);
+	W[69] = ROTL32(W[66] ^ W[61] ^ W[55] ^ W[53], 1);
+	ROUND(B,C,D,E,A, PAR, K3, W[69]);
+
+	W[70] = ROTL32(W[67] ^ W[62] ^ W[56] ^ W[54], 1);
+	ROUND(A,B,C,D,E, PAR, K3, W[70]);
+	W[71] = ROTL32(W[68] ^ W[63] ^ W[57] ^ W[55], 1);
+	ROUND(E,A,B,C,D, PAR, K3, W[71]);
+	W[72] = ROTL32(W[69] ^ W[64] ^ W[58] ^ W[56], 1);
+	ROUND(D,E,A,B,C, PAR, K3, W[72]);
+	W[73] = ROTL32(W[70] ^ W[65] ^ W[59] ^ W[57], 1);
+	ROUND(C,D,E,A,B, PAR, K3, W[73]);
+	W[74] = ROTL32(W[71] ^ W[66] ^ W[60] ^ W[58], 1);
+	ROUND(B,C,D,E,A, PAR, K3, W[74]);
+
+	W[75] = ROTL32(W[72] ^ W[67] ^ W[61] ^ W[59], 1);
+	ROUND(A,B,C,D,E, PAR, K3, W[75]);
+	W[76] = ROTL32(W[73] ^ W[68] ^ W[62] ^ W[60], 1);
+	ROUND(E,A,B,C,D, PAR, K3, W[76]);
+	W[77] = ROTL32(W[74] ^ W[69] ^ W[63] ^ W[61], 1);
+	ROUND(D,E,A,B,C, PAR, K3, W[77]);
+	W[78] = ROTL32(W[75] ^ W[70] ^ W[64] ^ W[62], 1);
+	ROUND(C,D,E,A,B, PAR, K3, W[78]);
+	W[79] = ROTL32(W[76] ^ W[71] ^ W[65] ^ W[63], 1);
+	ROUND(B,C,D,E,A, PAR, K3, W[79]);

-	for (t = 60; t < 80; t++) {
-		temp = ROTL32(A, 5) + (B ^ C ^ D) + E + W[t] + 0xCA62C1D6;
-		E = D;
-		D = C;
-		C = ROTL32(B, 30);
-		B = A;
-		A = temp;
-	}

 	hash[0] += A;
 	hash[1] += B;
-	hash[2] += C;
-	hash[3] += D;
-	hash[4] += E;
+	hash[2] += ROTL32(C,30);
+	hash[3] += ROTL32(D,30);
+	hash[4] += ROTL32(E,30);
 }

 /**
--- a/Utilities/cmlibrhash/librhash/sha256.c
+++ b/Utilities/cmlibrhash/librhash/sha256.c
@@ -61,7 +61,7 @@ static const unsigned rhash_k256[64] = {
 	ROUND(a,b,c,d,e,f,g,h, k[n], RECALCULATE_W(W, n))

 /**
- * Initialize context before calculaing hash.
+ * Initialize context before calculating hash.
 *
 * @param ctx context to initialize
 */
@@ -74,7 +74,7 @@ void rhash_sha256_init(sha256_ctx* ctx)
 		0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
 		0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
 	};
-
+	memset(ctx->message, 0, sizeof(ctx->message));
 	ctx->length = 0;
 	ctx->digest_length = sha256_hash_size;

@@ -83,7 +83,7 @@ void rhash_sha256_init(sha256_ctx* ctx)
 }

 /**
- * Initialize context before calculaing hash.
+ * Initialize context before calculating hash.
 *
 * @param ctx context to initialize
 */
@@ -96,7 +96,7 @@ void rhash_sha224_init(struct sha256_ctx* ctx)
 		0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
 		0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4
 	};
-
+	memset(ctx->message, 0, sizeof(ctx->message));
 	ctx->length = 0;
 	ctx->digest_length = sha224_hash_size;

--- a/Utilities/cmlibrhash/librhash/sha256.h
+++ b/Utilities/cmlibrhash/librhash/sha256.h
@@ -23,7 +23,7 @@ typedef struct sha256_ctx
 void rhash_sha224_init(sha256_ctx* ctx);
 void rhash_sha256_init(sha256_ctx* ctx);
 void rhash_sha256_update(sha256_ctx* ctx, const unsigned char* data, size_t length);
-void rhash_sha256_final(sha256_ctx* ctx, unsigned char result[32]);
+void rhash_sha256_final(sha256_ctx* ctx, unsigned char* result);

 #ifdef __cplusplus
 } /* extern "C" */
--- a/Utilities/cmlibrhash/librhash/sha512.c
+++ b/Utilities/cmlibrhash/librhash/sha512.c
@@ -91,7 +91,7 @@ void rhash_sha512_init(sha512_ctx* ctx)
 		I64(0xa54ff53a5f1d36f1), I64(0x510e527fade682d1), I64(0x9b05688c2b3e6c1f),
 		I64(0x1f83d9abfb41bd6b), I64(0x5be0cd19137e2179)
 	};
-
+	memset(ctx->message, 0, sizeof(ctx->message));
 	ctx->length = 0;
 	ctx->digest_length = sha512_hash_size;

@@ -100,7 +100,7 @@ void rhash_sha512_init(sha512_ctx* ctx)
 }

 /**
- * Initialize context before calculaing hash.
+ * Initialize context before calculating hash.
 *
 * @param ctx context to initialize
 */
@@ -114,7 +114,7 @@ void rhash_sha384_init(struct sha512_ctx* ctx)
 		I64(0x152fecd8f70e5939), I64(0x67332667ffc00b31), I64(0x8eb44a8768581511),
 		I64(0xdb0c2e0d64f98fa7), I64(0x47b5481dbefa4fa4)
 	};
-
+	memset(ctx->message, 0, sizeof(ctx->message));
 	ctx->length = 0;
 	ctx->digest_length = sha384_hash_size;

--- a/Utilities/cmlibrhash/librhash/util.c
+++ b/Utilities/cmlibrhash/librhash/util.c
@@ -0,0 +1,61 @@
+/* util.c - memory functions.
+ *
+ * Copyright (c) 2020, Aleksey Kravchenko <rhash.admin@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE  INCLUDING ALL IMPLIED WARRANTIES OF  MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT,  OR CONSEQUENTIAL DAMAGES  OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE,  DATA OR PROFITS,  WHETHER IN AN ACTION OF CONTRACT,  NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION,  ARISING OUT OF  OR IN CONNECTION  WITH THE USE  OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#include "util.h"
+
+#if defined(HAS_POSIX_ALIGNED_ALLOC)
+
+#include <errno.h>
+
+void* rhash_px_aalloc(size_t alignment, size_t size)
+{
+	void* ptr;
+	if ((errno = posix_memalign(&ptr, alignment, size)) != 0)
+		return NULL;
+	return ptr;
+}
+
+#elif defined(HAS_GENERIC_ALIGNED_ALLOC)
+
+#include <assert.h>
+#include <stdlib.h>
+
+void* rhash_aligned_alloc(size_t alignment, size_t size)
+{
+	unsigned char* block = (unsigned char*)malloc(size + alignment);
+	assert((alignment & (alignment - 1)) == 0);
+	assert(alignment >= sizeof(void*));
+	if (block) {
+		const size_t alignment_mask = (alignment - 1);
+		unsigned char* basement = block + sizeof(void*);
+		size_t offset = ((unsigned char*)0 - basement) & alignment_mask;
+		void** result = (void**)(basement + offset);
+		assert((((unsigned char*)result - (unsigned char*)0) % alignment) == 0);
+		result[-1] = block; /* store original pointer */
+		return result;
+	}
+	return NULL;
+}
+
+void rhash_aligned_free(void* ptr)
+{
+	void** pfree = (void**)ptr;
+	if (ptr)
+		free(pfree[-1]);
+}
+
+#else
+typedef int dummy_declaration_required_by_strict_iso_c;
+#endif /* HAS_POSIX_ALIGNED_ALLOC / HAS_GENERIC_ALIGNED_ALLOC */
--- a/Utilities/cmlibrhash/librhash/util.h
+++ b/Utilities/cmlibrhash/librhash/util.h
@@ -6,6 +6,9 @@
 extern "C" {
 #endif

+/* compile-time assert */
+#define RHASH_ASSERT(cond) (void)sizeof(char[1 - 2 * !(cond)])
+
 #if (defined(__GNUC__) && __GNUC__ >= 4 && (__GNUC__ > 4 || __GNUC_MINOR__ >= 1) \
 	&& defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)) \
 	|| (defined(__INTEL_COMPILER) && !defined(_WIN32))
@@ -24,6 +27,51 @@ extern "C" {
 # define NO_ATOMIC_BUILTINS
 #endif

+/* alignment macros */
+#define DEFAULT_ALIGNMENT 64
+#define ALIGN_SIZE_BY(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
+#define IS_SIZE_ALIGNED_BY(size, align) (((size) & ((align) - 1)) == 0)
+#define IS_PTR_ALIGNED_BY(ptr, align) IS_SIZE_ALIGNED_BY((uintptr_t)(ptr), (align))
+
+/* define rhash_aligned_alloc() and rhash_aligned_free() */
+#if !defined(NO_WIN32_ALIGNED_ALLOC) && defined(_WIN32)
+
+# define HAS_WIN32_ALIGNED_ALLOC
+# include <malloc.h>
+# define rhash_aligned_alloc(alignment, size) _aligned_malloc((size), (alignment))
+# define rhash_aligned_free(ptr) _aligned_free(ptr)
+
+#elif !defined(NO_STDC_ALIGNED_ALLOC) && (__STDC_VERSION__ >= 201112L || defined(_ISOC11_SOURCE)) \
+	&& !(defined(__ibmxl__) && defined(__clang__) && defined(__linux__)) \
+	&& !defined(__APPLE__) && !defined(__HAIKU__) && !defined(__sun) \
+	&& (!defined(__ANDROID_API__) || __ANDROID_API__ >= 28)
+
+# define HAS_STDC_ALIGNED_ALLOC
+# include <stdlib.h>
+# define rhash_aligned_alloc(alignment, size) aligned_alloc((alignment), ALIGN_SIZE_BY(size, alignment))
+# define rhash_aligned_free(ptr) free(ptr)
+
+#else /* defined(_WIN32) ... */
+
+# include "ustd.h" /* for _POSIX_VERSION macro */
+
+# if !defined(NO_POSIX_ALIGNED_ALLOC) && (_POSIX_VERSION >= 200112L || _XOPEN_SOURCE >= 600)
+
+#  define HAS_POSIX_ALIGNED_ALLOC
+#  include <stdlib.h>
+#  define rhash_aligned_alloc(alignment, size) rhash_px_aalloc((alignment), ALIGN_SIZE_BY(size, sizeof(void*)))
+#  define rhash_aligned_free(ptr) free(ptr)
+void* rhash_px_aalloc(size_t size, size_t alignment);
+
+# else
+
+#  define HAS_GENERIC_ALIGNED_ALLOC
+void* rhash_aligned_alloc(size_t alignment, size_t size);
+void rhash_aligned_free(void* ptr);
+
+# endif /* !defined(NO_POSIX_ALIGNED_ALLOC) ... */
+#endif /* defined(_WIN32) ... */
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif /* __cplusplus */
--- a/4
+++ b/4
@@ -594,6 +594,7 @@ LIBRHASH_C_SOURCES="\
  librhash/sha256.c \
  librhash/sha3.c \
  librhash/sha512.c \
+  librhash/util.c \
  "

 JSONCPP_CXX_SOURCES="\
@@ -1792,6 +1793,7 @@ else
  libs="${libs} -luv"
 fi

+librhash_c_flags="-DNO_IMPORT_EXPORT"
 if test "x${bootstrap_system_librhash}" != "x"; then
  if test `which pkg-config`; then
    use_librhash_flags="`pkg-config --cflags librhash`"
@@ -1946,7 +1948,7 @@ fi
 if test "x${bootstrap_system_librhash}" = "x"; then
  for a in ${LIBRHASH_C_SOURCES}; do
    src=`cmake_escape_artifact "${cmake_source_dir}/Utilities/cmlibrhash/${a}"`
-    write_source_rule "c" "rhash-`cmake_obj ${a}`" "${src}" ""
+    write_source_rule "c" "rhash-`cmake_obj ${a}`" "${src}" "${librhash_c_flags}"
  done
 fi
 if test "x${bootstrap_system_jsoncpp}" = "x"; then