CRYPTO_cfb128_1_encrypt
CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc,
CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks, ctx->iv,
CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK*8, &dat->ks,
CRYPTO_cfb128_1_encrypt(in, out, len*8, &dat->ks,
void CRYPTO_cfb128_1_encrypt(const unsigned char *in, unsigned char *out,