Description

This sample demonstrates how to decrypt a file using the Rijndael and Twofish encryption methods.

Project path

Project path: SAMPLES\VISUAL C++ 6-7\DECRYPT

Project file name: DECRYPT.DSP

Demonstrates

Properties: EncryptionMode and EncryptionMethod

Method: ReadFile, ProcessFile, SetSecretKeyFromPassPhrase and SetRandomInitVector

How to use

This sample is a console application that takes at least two parameters (the input file name and the pass phrase) to perform decryption. The sample's command-line usage specifications are:

Decrypt [options] input_file pass_phrase [output_file]

The parameters between brackets are optional. The option parameter can be used to specify the encryption method. If omitted, this option is set to AES (Rijndael). If the output file name is omitted, the decrypted text is sent to the screen.