tc_encrypt
error = tc_encrypt(cipher_chain, key, iv, (unsigned char *)dhdr,
error = tc_encrypt(cipher_chain, key_backup, iv,
error = tc_encrypt(info->cipher_chain, key, iv,
error = tc_encrypt(info->cipher_chain, key_backup, iv,
int tc_encrypt(struct tc_cipher_chain *cipher_chain, unsigned char *key,