diff options
Diffstat (limited to 'crypto/seed/seed_cbc.c')
-rw-r--r-- | crypto/seed/seed_cbc.c | 76 |
1 files changed, 5 insertions, 71 deletions
diff --git a/crypto/seed/seed_cbc.c b/crypto/seed/seed_cbc.c index 4f718ccb44..6c3f9b527a 100644 --- a/crypto/seed/seed_cbc.c +++ b/crypto/seed/seed_cbc.c @@ -49,81 +49,15 @@ * */ -#include "seed_locl.h" -#include <string.h> +#include <openssl/seed.h> +#include <openssl/modes.h> void SEED_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t len, const SEED_KEY_SCHEDULE *ks, unsigned char ivec[SEED_BLOCK_SIZE], int enc) { - size_t n; - unsigned char tmp[SEED_BLOCK_SIZE]; - const unsigned char *iv = ivec; - if (enc) - { - while (len >= SEED_BLOCK_SIZE) - { - for (n = 0; n < SEED_BLOCK_SIZE; ++n) - out[n] = in[n] ^ iv[n]; - SEED_encrypt(out, out, ks); - iv = out; - len -= SEED_BLOCK_SIZE; - in += SEED_BLOCK_SIZE; - out += SEED_BLOCK_SIZE; - } - if (len) - { - for (n = 0; n < len; ++n) - out[n] = in[n] ^ iv[n]; - for (n = len; n < SEED_BLOCK_SIZE; ++n) - out[n] = iv[n]; - SEED_encrypt(out, out, ks); - iv = out; - } - memcpy(ivec, iv, SEED_BLOCK_SIZE); - } - else if (in != out) /* decrypt */ - { - while (len >= SEED_BLOCK_SIZE) - { - SEED_decrypt(in, out, ks); - for (n = 0; n < SEED_BLOCK_SIZE; ++n) - out[n] ^= iv[n]; - iv = in; - len -= SEED_BLOCK_SIZE; - in += SEED_BLOCK_SIZE; - out += SEED_BLOCK_SIZE; - } - if (len) - { - SEED_decrypt(in, tmp, ks); - for (n = 0; n < len; ++n) - out[n] = tmp[n] ^ iv[n]; - iv = in; - } - memcpy(ivec, iv, SEED_BLOCK_SIZE); - } - else /* decrypt, overlap */ - { - while (len >= SEED_BLOCK_SIZE) - { - memcpy(tmp, in, SEED_BLOCK_SIZE); - SEED_decrypt(in, out, ks); - for (n = 0; n < SEED_BLOCK_SIZE; ++n) - out[n] ^= ivec[n]; - memcpy(ivec, tmp, SEED_BLOCK_SIZE); - len -= SEED_BLOCK_SIZE; - in += SEED_BLOCK_SIZE; - out += SEED_BLOCK_SIZE; - } - if (len) - { - memcpy(tmp, in, SEED_BLOCK_SIZE); - SEED_decrypt(tmp, tmp, ks); - for (n = 0; n < len; ++n) - out[n] = tmp[n] ^ ivec[n]; - memcpy(ivec, tmp, SEED_BLOCK_SIZE); - } - } + CRYPTO_cbc128_encrypt(in,out,len,ks,ivec,(block128_f)SEED_encrypt); + else + CRYPTO_cbc128_decrypt(in,out,len,ks,ivec,(block128_f)SEED_decrypt); } |