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/****************************************************************
* *
* Copyright (c) 2009-2020 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#ifndef GTMCRYPT_SYM_REF_H
#define GTMCRYPT_SYM_REF_H
#ifdef USE_OPENSSL
# if defined(USE_AES256CFB)
# define ALGO EVP_aes_256_cfb128()
# define UNIQ_ENC_PARAM_STRING "AES256CFB"
# else
# error "Unsupported Algorithm for OpenSSL"
# endif
#elif defined USE_GCRYPT
# if defined(USE_AES256CFB)
# define ALGO GCRY_CIPHER_AES256
# define MODE GCRY_CIPHER_MODE_CFB
# define UNIQ_ENC_PARAM_STRING "AES256CFB"
# define FLAGS 0
# else
# error "Unsupported Algorithm for Libgcrypt"
# endif
#else
# error "Unsupported encryption library. Reference implementation currently supports OpenSSL and Libgcrypt"
#endif /* USE_GCRYPT */
#define UNIQ_ENC_PARAM_LEN SIZEOF(UNIQ_ENC_PARAM_STRING) - 1
#define HASH_INPUT_BUFF_LEN UNIQ_ENC_PARAM_LEN + SYMMETRIC_KEY_MAX
#ifndef USE_OPENSSL
int gc_sym_init(void);
#endif
int gc_sym_destroy_key_handles(gtm_keystore_t *entry);
int gc_sym_create_cipher_handle(unsigned char *raw_key, unsigned char *iv, crypt_key_t *handle, int direction, int reuse);
void gc_sym_destroy_cipher_handle(crypt_key_t handle);
int gc_sym_encrypt_decrypt(crypt_key_t *key, unsigned char *in_block, int in_block_len, unsigned char *out_block, int flag);
#endif /* GTMCRYPT_SYM_REF_H */
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