CodeSnip Old Code (SVN)

Added new UEncryptor unit that provides a static class that encrypts and decrypts binary data. It acts as a façade to the actual encryption engine.

Added new UHexUtils unit that provides routines that support conversion of hexadecimal strings to and from the corresponding binary data.

Changed to work on RawByteString strings instead of UTF-8 strings.

Modified to compile without warnings with revised UEncrypt routines. Now converts encrypted data items to and from UTF-8 before passing to encrypt / decrypt routines.

* Changed to work on UTF8 strings instead of default ANSI strings.
* Updated comments about changes made to unit and added Rev and Date SVN keyword placeholders.

Prevented unwanted type conversions to default ANSI string in UUnicodeHelper unit's StringToASCIIString and StringToWindows1252String routines. Used some code from Stack Overflow (http://bit.ly/bAvtGd).

Removed unnecessary compiler directives.

Completed commenting of unit.

Commented unit.

* Added check for exceptions when decoding base 64 encoded checksum: we report a EWebServiceFailure exception.
* Corrected and modified some error messages.