70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
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* seccure - Copyright 2009 B. Poettering
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*
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* Maintained by R. Tyler Ballance <tyler@slide.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* SECCURE Elliptic Curve Crypto Utility for Reliable Encryption
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*
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* Current homepage: http://slideinc.github.com/PyECC
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* Original homepage: http://point-at-infinity.org/seccure/
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*
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*
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* seccure implements a selection of asymmetric algorithms based on
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* elliptic curve cryptography (ECC). See the manpage or the project's
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* homepage for further details.
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*
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* This code links against the GNU gcrypt library "libgcrypt" (which
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* is part of the GnuPG project). Use the included Makefile to build
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* the binary.
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*
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* Report bugs to: http://github.com/rtyler/PyECC/issues
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*/
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#ifndef INC_AES256CTR_H
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#define INC_AES256CTR_H
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#include <gcrypt.h>
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#define CIPHER_BLOCK_SIZE 16
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#define CIPHER_KEY_SIZE 32
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#define HMAC_KEY_SIZE 32
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struct aes256ctr {
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gcry_cipher_hd_t ch;
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int idx;
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char buf[CIPHER_BLOCK_SIZE];
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};
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struct aes256ctr* aes256ctr_init(const char *key);
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void aes256ctr_enc(struct aes256ctr *ac, char *buf, int len);
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#define aes256ctr_dec aes256ctr_enc
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void aes256ctr_done(struct aes256ctr *ac);
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int hmacsha256_init(gcry_md_hd_t *mh, const char *key, int len);
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#define aes256cprng aes256ctr
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#define aes256cprng_init aes256ctr_init
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void aes256cprng_fillbuf(struct aes256cprng *cprng, char *buf, int len);
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#define aes256cprng_done aes256ctr_done
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#endif /* INC_AES256CTR_H */
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