Edward Stott / Crypto_light

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Fork of Crypto by Francois Berder

cipher/BlockCipher.cpp

Committer:
feb11
Date:
2013-09-14
Revision:
8:a090264e9b2d
Child:
14:f04410cef037

File content as of revision 8:a090264e9b2d:

#include "BlockCipher.h"
#include <string.h>

BlockCipher::BlockCipher(uint32_t bs, BLOCK_CIPHER_MODE m, uint8_t *iv):
Cipher(),
blockSize(bs),
mode(m),
IV(0)
{
    if(mode == CBC_MODE)
    {
        IV = new uint8_t[blockSize];
        memcpy(IV, iv, blockSize); 
    }
}

BlockCipher::~BlockCipher()
{
    if(IV != 0)
        delete[] IV;
}

CIPHER_TYPE BlockCipher::getType() const
{
    return BLOCK_CIPHER;
}

uint32_t BlockCipher::getBlockSize() const
{
    return blockSize;
}

void BlockCipher::encrypt(uint8_t *out, uint8_t *in, uint32_t length)
{
    for(uint32_t i = 0; i < length; i += getBlockSize())
    {
        encryptBlock(&out[i], &in[i]);
        
    }
}

void BlockCipher::decrypt(uint8_t *out, uint8_t *in, uint32_t length)
{
    for(uint32_t i = 0; i < length; i += getBlockSize())
    {
        decryptBlock(&out[i], &in[i]);
        
    }
}