void cipher_set_key_string(CipherContext * context, int cipher, const char *passphrase, int for_encryption)
{
struct MD5Context md;
unsigned char digest[16];
MD5Init(&md);
MD5Update(&md, (const unsigned char *) passphrase, strlen(passphrase));
MD5Final(digest, &md);
cipher_set_key(context, cipher, digest, 16, for_encryption);
memset(digest, 0, sizeof(digest));
memset(&md, 0, sizeof(md));
}
void
cipher_set_key_string(CipherContext *context, int cipher, const char *passphrase)
{
MD5_CTX md;
unsigned char digest[16];
MD5_Init(&md);
MD5_Update(&md, (const unsigned char *) passphrase, strlen(passphrase));
MD5_Final(digest, &md);
cipher_set_key(context, cipher, digest, 16);
memset(digest, 0, sizeof(digest));
memset(&md, 0, sizeof(md));
}
static void x917_generate(PRNG *ctx_, uint8_t *data, size_t len)
{
X917Context *ctx = (X917Context *)ctx_;
BlockCipher *cipher = AES128_stackinit();
const size_t blen = cipher_block_len(cipher);
uint8_t temp[blen];
ASSERT(len);
ASSERT(sizeof(ctx->state) >= blen);
ASSERT(sizeof(ctx->key) >= cipher_key_len(cipher));
cipher_set_key(cipher, ctx->key);
while (len)
{
size_t L = MIN(blen, len);
x917_next(ctx, cipher, temp);
memcpy(data, temp, L);
len -= L;
data += L;
}
}