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ctr.h

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    • Niels Möller's avatar
      82cb285e
      Added C++ guards. · 82cb285e
      Niels Möller authored
      Rev: src/nettle/aes.h:1.8
      Rev: src/nettle/arcfour.h:1.6
      Rev: src/nettle/arctwo.h:1.3
      Rev: src/nettle/asn1.h:1.3
      Rev: src/nettle/base16.h:1.4
      Rev: src/nettle/base64.h:1.15
      Rev: src/nettle/bignum.h:1.11
      Rev: src/nettle/blowfish.h:1.10
      Rev: src/nettle/buffer.h:1.6
      Rev: src/nettle/cast128.h:1.6
      Rev: src/nettle/cbc.h:1.9
      Rev: src/nettle/ctr.h:1.3
      Rev: src/nettle/des-compat.h:1.13
      Rev: src/nettle/des.h:1.11
      Rev: src/nettle/dsa.h:1.10
      Rev: src/nettle/hmac.h:1.6
      Rev: src/nettle/knuth-lfib.h:1.4
      Rev: src/nettle/md2.h:1.4
      Rev: src/nettle/md4.h:1.4
      Rev: src/nettle/md5-compat.h:1.3
      Rev: src/nettle/md5.h:1.9
      Rev: src/nettle/memxor.h:1.5
      Rev: src/nettle/nettle-meta.h:1.15
      Rev: src/nettle/nettle-types.h:1.2
      Rev: src/nettle/pgp.h:1.8
      Rev: src/nettle/pkcs1.h:1.4
      Rev: src/nettle/realloc.h:1.3
      Rev: src/nettle/rsa-compat.h:1.4
      Rev: src/nettle/rsa.h:1.26
      Rev: src/nettle/serpent.h:1.8
      Rev: src/nettle/sexp.h:1.18
      Rev: src/nettle/sha.h:1.7
      Rev: src/nettle/testsuite/testutils.h:1.24
      Rev: src/nettle/twofish.h:1.7
      Rev: src/nettle/yarrow.h:1.12
      82cb285e
      History
      Added C++ guards.
      Niels Möller authored
      Rev: src/nettle/aes.h:1.8
      Rev: src/nettle/arcfour.h:1.6
      Rev: src/nettle/arctwo.h:1.3
      Rev: src/nettle/asn1.h:1.3
      Rev: src/nettle/base16.h:1.4
      Rev: src/nettle/base64.h:1.15
      Rev: src/nettle/bignum.h:1.11
      Rev: src/nettle/blowfish.h:1.10
      Rev: src/nettle/buffer.h:1.6
      Rev: src/nettle/cast128.h:1.6
      Rev: src/nettle/cbc.h:1.9
      Rev: src/nettle/ctr.h:1.3
      Rev: src/nettle/des-compat.h:1.13
      Rev: src/nettle/des.h:1.11
      Rev: src/nettle/dsa.h:1.10
      Rev: src/nettle/hmac.h:1.6
      Rev: src/nettle/knuth-lfib.h:1.4
      Rev: src/nettle/md2.h:1.4
      Rev: src/nettle/md4.h:1.4
      Rev: src/nettle/md5-compat.h:1.3
      Rev: src/nettle/md5.h:1.9
      Rev: src/nettle/memxor.h:1.5
      Rev: src/nettle/nettle-meta.h:1.15
      Rev: src/nettle/nettle-types.h:1.2
      Rev: src/nettle/pgp.h:1.8
      Rev: src/nettle/pkcs1.h:1.4
      Rev: src/nettle/realloc.h:1.3
      Rev: src/nettle/rsa-compat.h:1.4
      Rev: src/nettle/rsa.h:1.26
      Rev: src/nettle/serpent.h:1.8
      Rev: src/nettle/sexp.h:1.18
      Rev: src/nettle/sha.h:1.7
      Rev: src/nettle/testsuite/testutils.h:1.24
      Rev: src/nettle/twofish.h:1.7
      Rev: src/nettle/yarrow.h:1.12
    aes.h 2.32 KiB
    /* aes.h
     *
     * The aes/rijndael block cipher.
     */
    
    /* nettle, low-level cryptographics library
     *
     * Copyright (C) 2001 Niels Möller
     *  
     * The nettle 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.
     * 
     * The nettle 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 the nettle library; see the file COPYING.LIB.  If not, write to
     * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
     * MA 02111-1301, USA.
     */
     
    #ifndef NETTLE_AES_H_INCLUDED
    #define NETTLE_AES_H_INCLUDED
    
    #include "nettle-types.h"
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    /* Name mangling */
    #define aes_set_encrypt_key nettle_aes_set_encrypt_key
    #define aes_set_decrypt_key nettle_aes_set_decrypt_key
    #define aes_invert_key nettle_aes_invert_key
    #define aes_encrypt nettle_aes_encrypt
    #define aes_decrypt nettle_aes_decrypt
    
    #define AES_BLOCK_SIZE 16
    
    /* Variable key size between 128 and 256 bits. But the only valid
     * values are 16 (128 bits), 24 (192 bits) and 32 (256 bits). */
    #define AES_MIN_KEY_SIZE 16
    #define AES_MAX_KEY_SIZE 32
    
    #define AES_KEY_SIZE 32
    
    /* FIXME: Change to put nrounds first, to make it possible to use a
       truncated ctx struct, with less subkeys, for the shorter key
       sizes? */
    struct aes_ctx
    {
      uint32_t keys[60];  /* maximum size of key schedule */
      unsigned  nrounds;  /* number of rounds to use for our key size */
    };
    
    void
    aes_set_encrypt_key(struct aes_ctx *ctx,
    		    size_t length, const uint8_t *key);
    
    void
    aes_set_decrypt_key(struct aes_ctx *ctx,
    		   size_t length, const uint8_t *key);
    
    void
    aes_invert_key(struct aes_ctx *dst,
    	       const struct aes_ctx *src);