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/*
Copyright (C) 2009-2016 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _SSS_CRYPTO_H_
#define _SSS_CRYPTO_H_
int generate_csprng_buffer(uint8_t *buf, size_t size);
int s3crypt_sha512(TALLOC_CTX *mmectx,
const char *key, const char *salt, char **_hash);
int s3crypt_gen_salt(TALLOC_CTX *memctx, char **_salt);
/* Methods of obfuscation. */
enum obfmethod {
AES_256,
NUM_OBFMETHODS
};
int test2(void);
char *sss_base64_encode(TALLOC_CTX *mem_ctx,
const unsigned char *in,
size_t insize);
unsigned char *sss_base64_decode(TALLOC_CTX *mem_ctx,
const char *in,
size_t *outsize);
#define SSS_SHA1_LENGTH 20
int sss_hmac_sha1(const unsigned char *key,
size_t key_len,
const unsigned char *in,
size_t in_len,
unsigned char *out);
int sss_password_encrypt(TALLOC_CTX *mem_ctx, const char *password, int plen,
enum obfmethod meth, char **obfpwd);
int sss_password_decrypt(TALLOC_CTX *mem_ctx, char *b64encoded,
char **password);
enum encmethod {
AES256CBC_HMAC_SHA256,
NUM_ENCMETHODS
};
int sss_encrypt(TALLOC_CTX *mem_ctx, enum encmethod enctype,
uint8_t *key, size_t keylen,
const uint8_t *plaintext, size_t plainlen,
uint8_t **ciphertext, size_t *cipherlen);
int sss_decrypt(TALLOC_CTX *mem_ctx, enum encmethod enctype,
uint8_t *key, size_t keylen,
const uint8_t *ciphertext, size_t cipherlen,
uint8_t **plaintext, size_t *plainlen);
#endif /* _SSS_CRYPTO_H_ */
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