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#include <string>
#include <vector>
#include <string.h>
#include <stdio.h>
#include "encrypt_stream.h"
#include "encrypt_stream_blowfish.h"
#include "utils.h"
encrypt_stream_blowfish::encrypt_stream_blowfish()
{
enc = NULL;
dec = NULL;
}
encrypt_stream_blowfish::~encrypt_stream_blowfish()
{
delete enc;
delete dec;
}
int encrypt_stream_blowfish::get_ivec_size()
{
return CryptoPP::Blowfish::BLOCKSIZE;
}
int encrypt_stream_blowfish::get_key_size()
{
return CryptoPP::Blowfish::DEFAULT_KEYLENGTH;
}
bool encrypt_stream_blowfish::init(unsigned char *key_in, int key_len, unsigned char *ivec_in, bool force)
{
my_assert(key_len > 0);
#ifdef CRYPTO_DEBUG
printf("KEY: "); hexdump(key_in, key_len);
#endif
if (enc)
delete enc;
if (dec)
delete dec;
enc = new CryptoPP::CFB_Mode<CryptoPP::Blowfish>::Encryption(key_in, key_len, ivec_in);
dec = new CryptoPP::CFB_Mode<CryptoPP::Blowfish>::Decryption(key_in, key_len, ivec_in);
return true;
}
std::string encrypt_stream_blowfish::get_name()
{
return "blowfish";
}
void encrypt_stream_blowfish::encrypt(unsigned char *p, int len, unsigned char *p_out)
{
my_assert(len > 0);
#ifdef CRYPTO_DEBUG
printf("ORG: "); hexdump(p, len);
printf("EIV %d before: ", ivec_offset); hexdump(ivec, 8);
#endif
enc -> ProcessData(p_out, p, len);
#ifdef CRYPTO_DEBUG
printf("EIV %d after: ", ivec_offset); hexdump(ivec, 8);
printf("ENC: "); hexdump(p_out, len);
#endif
}
void encrypt_stream_blowfish::decrypt(unsigned char *p, int len, unsigned char *p_out)
{
my_assert(len > 0);
#ifdef CRYPTO_DEBUG
printf("DEC: "); hexdump(p, len);
printf("EIV %d before: ", ivec_offset); hexdump(ivec, 8);
#endif
dec -> ProcessData(p_out, p, len);
#ifdef CRYPTO_DEBUG
printf("EIV %d after: ", ivec_offset); hexdump(ivec, 8);
printf("ORG: "); hexdump(p_out, len);
#endif
}
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