/*

 *

 *  Embedded Linux library

 *

 *  Copyright (C) 2015  Intel Corporation. All rights reserved.

 *

 *  This library is free software; you can redistribute it and/or

 *  modify it under the terms of the GNU Lesser General Public

 *  License as published by the Free Software Foundation; either

 *  version 2.1 of the License, or (at your option) any later version.

 *

 *  This library is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 *  Lesser General Public License for more details.

 *

 *  You should have received a copy of the GNU Lesser General Public

 *  License along with this library; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *

 */

#ifndef __ELL_CIPHER_H

#define __ELL_CIPHER_H

#ifdef __cplusplus

extern "C" {

#endif

struct l_cipher;

enum l_cipher_type {

	L_CIPHER_AES = 0,

	L_CIPHER_AES_CBC,

	L_CIPHER_AES_CTR,

	L_CIPHER_ARC4,

	L_CIPHER_DES,

	L_CIPHER_DES_CBC,

	L_CIPHER_DES3_EDE_CBC,

};

struct l_cipher *l_cipher_new(enum l_cipher_type type,

				const void *key, size_t key_length);

void l_cipher_free(struct l_cipher *cipher);

bool l_cipher_encrypt(struct l_cipher *cipher,

			const void *in, void *out, size_t len);

bool l_cipher_encryptv(struct l_cipher *cipher,

				const struct iovec *in, size_t in_cnt,

				const struct iovec *out, size_t out_cnt);

bool l_cipher_decrypt(struct l_cipher *cipher,

			const void *in, void *out, size_t len);

bool l_cipher_decryptv(struct l_cipher *cipher,

				const struct iovec *in, size_t in_cnt,

				const struct iovec *out, size_t out_cnt);

bool l_cipher_set_iv(struct l_cipher *cipher, const uint8_t *iv,

			size_t iv_length);

struct l_aead_cipher;

enum l_aead_cipher_type {

	L_AEAD_CIPHER_AES_CCM = 0,

	L_AEAD_CIPHER_AES_GCM,

};

struct l_aead_cipher *l_aead_cipher_new(enum l_aead_cipher_type type,

					const void *key, size_t key_length,

					size_t tag_length);

void l_aead_cipher_free(struct l_aead_cipher *cipher);

bool l_aead_cipher_encrypt(struct l_aead_cipher *cipher,

				const void *in, size_t in_len,

				const void *ad, size_t ad_len,

				const void *nonce, size_t nonce_len,

				void *out, size_t out_len);

bool l_aead_cipher_decrypt(struct l_aead_cipher *cipher,

				const void *in, size_t in_len,

				const void *ad, size_t ad_len,

				const void *nonce, size_t nonce_len,

				void *out, size_t out_len);

bool l_cipher_is_supported(enum l_cipher_type type);

bool l_aead_cipher_is_supported(enum l_aead_cipher_type type);

#ifdef __cplusplus

}

#endif

#endif /* __ELL_CIPHER_H */