47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
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/*
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cipher.h -- header file cipher.c
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Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __TINC_CIPHER_H__
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#define __TINC_CIPHER_H__
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#include <openssl/evp.h>
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#define CIPHER_MAX_BLOCK_SIZE EVP_MAX_BLOCK_LENGTH
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#define CIPHER_MAX_KEY_SIZE EVP_MAX_KEY_LENGTH
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#define CIPHER_MAX_IV_SIZE EVP_MAX_IV_LENGTH
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typedef struct cipher {
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EVP_CIPHER_CTX ctx;
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const EVP_CIPHER *cipher;
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} cipher_t;
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extern bool cipher_open_by_name(cipher_t *, const char *);
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extern bool cipher_open_by_nid(cipher_t *, int);
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extern bool cipher_open_blowfish_ofb(cipher_t *);
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extern void cipher_close(cipher_t *);
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extern size_t cipher_keylength(const cipher_t *);
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extern bool cipher_set_key(cipher_t *, void *, bool);
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extern bool cipher_set_key_from_rsa(cipher_t *, void *, size_t, bool);
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extern bool cipher_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool);
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extern bool cipher_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool);
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extern int cipher_get_nid(const cipher_t *);
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extern bool cipher_active(const cipher_t *);
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#endif
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