wanliliu/block-cipher-modes

Several modes of operation for block ciphers in C.

Block Cipher Modes of Operation

Implementation of several modes of operation for block ciphers in C. Visit the wikipedia article and the NIST Special Publication 800-38A for more info.

To compile use make:

make release

See available options with ./bcm -h:

Usage: ./bcm [options]
Options:
        -c block-cipher : cipher algorithm (default: null)
        -d              : decrypt
        -e              : encrypt
        -i iv           : initialization vector
        -k key          : private key
        -m mode         : mode of operation (default: ecb)
        -r file         : input file to encrypt/decrypt
        -w file         : output file
        -h              : this help

Example:

./bcm -m cbc -c aes -k 8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b -i 000102030405060708090a0b0c0d0e0f -r plaintext -w ciphertext -e