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cipher: Add option for changing the encryption used for the current file

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Add a new menu option to the main window (only visible when built with
the sqlcipher option enabled) which opens a dialog asking for new
encryption settings. These are then applied to a new database to which
all contents of the current one are exported. The old database is then
replaced by the new one.

This adds support for encrypting plaintext databases, decrypting
encrypted databases and changing the password or other settings of
encrypted databases.

If this turns out to work well enough we have functional SQLCipher
encryption support with only details missing.
This commit is contained in:
Martin Kleusberg
2014-11-02 19:06:06 +01:00
parent 8fb9176f99
commit a22ed6f9d3
7 changed files with 102 additions and 5 deletions
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6
src/CipherDialog.cpp
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@@ -13,9 +13,11 @@ CipherDialog::CipherDialog(QWidget* parent, bool encrypt) :
if(encrypt)
{
ui->labelDialogDescription->setText(tr("Please set a key to encrypt the database.\nNote that if you change any of the other, optional, settings you'll need "
"to re-enter them as well every time you open the database file."));
"to re-enter them as well every time you open the database file.\nLeave the password fields empty to disable the "
"encryption.\nThe encrpytion process might take some time and you should have a backup copy of you database! Unsaved "
"changes are applied before modifying the encryption."));
} else {
ui->labelDialogDescription->setText(tr("Please enter the key used to encrypt the database.\nIf any of the other setting were altered for this database file "
ui->labelDialogDescription->setText(tr("Please enter the key used to encrypt the database.\nIf any of the other settings were altered for this database file "
"you need to provide this information as well."));
ui->editPassword2->setVisible(false);
ui->labelPassword2->setVisible(false);