X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=lib%2Fsilccrypt%2Frijndael_internal.h;h=c1dc7e80fc4e86eac4eb7832fa4bf79c0fd32b8a;hb=e7b6c157b80152bf9fb9266e6bdd93f9fb0db776;hp=ae8b7308adf599ca5f72e72b04ae3eb44d38ab1f;hpb=62f89b2886bbe9df82d9b2fdabfe707509d9e0fc;p=silc.git diff --git a/lib/silccrypt/rijndael_internal.h b/lib/silccrypt/rijndael_internal.h index ae8b7308..c1dc7e80 100644 --- a/lib/silccrypt/rijndael_internal.h +++ b/lib/silccrypt/rijndael_internal.h @@ -1,21 +1,32 @@ -/* +/* --------------------------------------------------------------------------- + Copyright (c) 1998-2006, Brian Gladman, Worcester, UK. All rights reserved. - rijndael_internal.h + LICENSE TERMS - Author: Pekka Riikonen + The free distribution and use of this software in both source and binary + form is allowed (with or without changes) provided that: - Copyright (C) 1997 - 2000 Pekka Riikonen + 1. distributions of this source code include the above copyright + notice, this list of conditions and the following disclaimer; - 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 2 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. + 2. distributions in binary form include the above copyright + notice, this list of conditions and the following disclaimer + in the documentation and/or other associated materials; + 3. the copyright holder's name is not used to endorse products + built using this software without specific written permission. + + ALTERNATIVELY, provided that this notice is retained in full, this product + may be distributed under the terms of the GNU General Public License (GPL), + in which case the provisions of the GPL apply INSTEAD OF those given above. + + DISCLAIMER + + This software is provided 'as is' with no explicit or implied warranties + in respect of its properties, including, but not limited to, correctness + and/or fitness for purpose. + --------------------------------------------------------------------------- + Issue 09/09/2006 */ #ifndef RIJNDAEL_INTERNAL_H @@ -23,19 +34,256 @@ #include "ciphers_def.h" -/* Cipher's context */ +#define KS_LENGTH 60 + +typedef union { + uint_8t b[4]; +} aes_inf; + +typedef struct { + uint_32t ks[KS_LENGTH]; + aes_inf inf; +} aes_encrypt_ctx; + +typedef struct { + uint_32t ks[KS_LENGTH]; + aes_inf inf; +} aes_decrypt_ctx; + typedef struct { - u4byte e_key[60]; - u4byte d_key[60]; - u4byte k_len; -} RijndaelContext; - -/* Prototypes */ -u4byte *rijndael_set_key(RijndaelContext *ctx, - const u4byte in_key[], const u4byte key_len); -void rijndael_encrypt(RijndaelContext *ctx, - const u4byte in_blk[4], u4byte out_blk[4]); -void rijndael_decrypt(RijndaelContext *ctx, - const u4byte in_blk[4], u4byte out_blk[4]); + union { + aes_encrypt_ctx enc; + aes_decrypt_ctx dec; + } u; +} AesContext; +#define AES_RETURN void +#define AES_REV_DKS /* define to reverse decryption key schedule */ +#define AES_BLOCK_SIZE 16 /* the AES block size in bytes */ +#define N_COLS 4 /* the number of columns in the state */ +#define RC_LENGTH (5 * (AES_BLOCK_SIZE / 4 - 2)) +#define WPOLY 0x011b +#define BPOLY 0x1b +#define m1 0x80808080 +#define m2 0x7f7f7f7f +#define gf_mulx(x) ((((x) & m2) << 1) ^ ((((x) & m1) >> 7) * BPOLY)) +#define s(x,c) x[c] +#define lp32(x) ((uint_32t*)(x)) + +#if defined( _MSC_VER ) && ( _MSC_VER >= 1300 ) +#define TABLE_ALIGN 32 +#endif + +#if defined( bswap32 ) +#define aes_sw32 bswap32 +#elif defined( bswap_32 ) +#define aes_sw32 bswap_32 +#else +#define brot(x,n) (((uint_32t)(x) << n) | ((uint_32t)(x) >> (32 - n))) +#define aes_sw32(x) ((brot((x),8) & 0x00ff00ff) | (brot((x),24) & 0xff00ff00)) #endif + +#ifdef WORDS_BIGENDIAN +#define upr(x,n) (((uint_32t)(x) >> (8 * (n))) | \ + ((uint_32t)(x) << (32 - 8 * (n)))) +#define ups(x,n) ((uint_32t) (x) >> (8 * (n))) +#define bval(x,n) ((uint_8t)((x) >> (24 - 8 * (n)))) +#define bytes2word(b0, b1, b2, b3) (((uint_32t)(b0) << 24) | \ + ((uint_32t)(b1) << 16) | \ + ((uint_32t)(b2) << 8) | (b3)) +#else +#define upr(x,n) (((uint_32t)(x) << (8 * (n))) | \ + ((uint_32t)(x) >> (32 - 8 * (n)))) +#define ups(x,n) ((uint_32t) (x) << (8 * (n))) +#define bval(x,n) ((uint_8t)((x) >> (8 * (n)))) +#define bytes2word(b0, b1, b2, b3) (((uint_32t)(b3) << 24) | \ + ((uint_32t)(b2) << 16) | \ + ((uint_32t)(b1) << 8) | (b0)) +#endif /* WORDS_BIGENDIAN */ + +#define word_in(x,c) bytes2word(((const uint_8t*)(x)+4*c)[0], \ + ((const uint_8t*)(x)+4*c)[1], \ + ((const uint_8t*)(x)+4*c)[2], \ + ((const uint_8t*)(x)+4*c)[3]) +#define word_out(x,c,v) { \ + ((uint_8t*)(x)+4*c)[0] = bval(v,0); \ + ((uint_8t*)(x)+4*c)[1] = bval(v,1); \ + ((uint_8t*)(x)+4*c)[2] = bval(v,2); \ + ((uint_8t*)(x)+4*c)[3] = bval(v,3); \ +} + +#define four_tables(x,tab,vf,rf,c) \ + ( tab[0][bval(vf(x,0,c),rf(0,c))] \ + ^ tab[1][bval(vf(x,1,c),rf(1,c))] \ + ^ tab[2][bval(vf(x,2,c),rf(2,c))] \ + ^ tab[3][bval(vf(x,3,c),rf(3,c))]) + +#define vf1(x,r,c) (x) +#define rf1(r,c) (r) +#define rf2(r,c) ((8+r-c)&3) + +#define dec_fmvars uint_32t g2 +#define fwd_mcol(x) (g2 = gf_mulx(x), g2 ^ upr((x) ^ g2, 3) ^ upr((x), 2) ^ upr((x), 1)) +#define inv_mcol(x) four_tables(x,t_use(i,m),vf1,rf1,0) +#define ls_box(x,c) four_tables(x,t_use(f,l),vf1,rf2,c) + +#define ff(x) inv_mcol(x) +#if defined( dec_imvars ) +#define d_vars dec_imvars +#endif + +#define sb_data(w) {\ + w(0x63), w(0x7c), w(0x77), w(0x7b), w(0xf2), w(0x6b), w(0x6f), w(0xc5),\ + w(0x30), w(0x01), w(0x67), w(0x2b), w(0xfe), w(0xd7), w(0xab), w(0x76),\ + w(0xca), w(0x82), w(0xc9), w(0x7d), w(0xfa), w(0x59), w(0x47), w(0xf0),\ + w(0xad), w(0xd4), w(0xa2), w(0xaf), w(0x9c), w(0xa4), w(0x72), w(0xc0),\ + w(0xb7), w(0xfd), w(0x93), w(0x26), w(0x36), w(0x3f), w(0xf7), w(0xcc),\ + w(0x34), w(0xa5), w(0xe5), w(0xf1), w(0x71), w(0xd8), w(0x31), w(0x15),\ + w(0x04), w(0xc7), w(0x23), w(0xc3), w(0x18), w(0x96), w(0x05), w(0x9a),\ + w(0x07), w(0x12), w(0x80), w(0xe2), w(0xeb), w(0x27), w(0xb2), w(0x75),\ + w(0x09), w(0x83), w(0x2c), w(0x1a), w(0x1b), w(0x6e), w(0x5a), w(0xa0),\ + w(0x52), w(0x3b), w(0xd6), w(0xb3), w(0x29), w(0xe3), w(0x2f), w(0x84),\ + w(0x53), w(0xd1), w(0x00), w(0xed), w(0x20), w(0xfc), w(0xb1), w(0x5b),\ + w(0x6a), w(0xcb), w(0xbe), w(0x39), w(0x4a), w(0x4c), w(0x58), w(0xcf),\ + w(0xd0), w(0xef), w(0xaa), w(0xfb), w(0x43), w(0x4d), w(0x33), w(0x85),\ + w(0x45), w(0xf9), w(0x02), w(0x7f), w(0x50), w(0x3c), w(0x9f), w(0xa8),\ + w(0x51), w(0xa3), w(0x40), w(0x8f), w(0x92), w(0x9d), w(0x38), w(0xf5),\ + w(0xbc), w(0xb6), w(0xda), w(0x21), w(0x10), w(0xff), w(0xf3), w(0xd2),\ + w(0xcd), w(0x0c), w(0x13), w(0xec), w(0x5f), w(0x97), w(0x44), w(0x17),\ + w(0xc4), w(0xa7), w(0x7e), w(0x3d), w(0x64), w(0x5d), w(0x19), w(0x73),\ + w(0x60), w(0x81), w(0x4f), w(0xdc), w(0x22), w(0x2a), w(0x90), w(0x88),\ + w(0x46), w(0xee), w(0xb8), w(0x14), w(0xde), w(0x5e), w(0x0b), w(0xdb),\ + w(0xe0), w(0x32), w(0x3a), w(0x0a), w(0x49), w(0x06), w(0x24), w(0x5c),\ + w(0xc2), w(0xd3), w(0xac), w(0x62), w(0x91), w(0x95), w(0xe4), w(0x79),\ + w(0xe7), w(0xc8), w(0x37), w(0x6d), w(0x8d), w(0xd5), w(0x4e), w(0xa9),\ + w(0x6c), w(0x56), w(0xf4), w(0xea), w(0x65), w(0x7a), w(0xae), w(0x08),\ + w(0xba), w(0x78), w(0x25), w(0x2e), w(0x1c), w(0xa6), w(0xb4), w(0xc6),\ + w(0xe8), w(0xdd), w(0x74), w(0x1f), w(0x4b), w(0xbd), w(0x8b), w(0x8a),\ + w(0x70), w(0x3e), w(0xb5), w(0x66), w(0x48), w(0x03), w(0xf6), w(0x0e),\ + w(0x61), w(0x35), w(0x57), w(0xb9), w(0x86), w(0xc1), w(0x1d), w(0x9e),\ + w(0xe1), w(0xf8), w(0x98), w(0x11), w(0x69), w(0xd9), w(0x8e), w(0x94),\ + w(0x9b), w(0x1e), w(0x87), w(0xe9), w(0xce), w(0x55), w(0x28), w(0xdf),\ + w(0x8c), w(0xa1), w(0x89), w(0x0d), w(0xbf), w(0xe6), w(0x42), w(0x68),\ + w(0x41), w(0x99), w(0x2d), w(0x0f), w(0xb0), w(0x54), w(0xbb), w(0x16) } + +#define isb_data(w) {\ + w(0x52), w(0x09), w(0x6a), w(0xd5), w(0x30), w(0x36), w(0xa5), w(0x38),\ + w(0xbf), w(0x40), w(0xa3), w(0x9e), w(0x81), w(0xf3), w(0xd7), w(0xfb),\ + w(0x7c), w(0xe3), w(0x39), w(0x82), w(0x9b), w(0x2f), w(0xff), w(0x87),\ + w(0x34), w(0x8e), w(0x43), w(0x44), w(0xc4), w(0xde), w(0xe9), w(0xcb),\ + w(0x54), w(0x7b), w(0x94), w(0x32), w(0xa6), w(0xc2), w(0x23), w(0x3d),\ + w(0xee), w(0x4c), w(0x95), w(0x0b), w(0x42), w(0xfa), w(0xc3), w(0x4e),\ + w(0x08), w(0x2e), w(0xa1), w(0x66), w(0x28), w(0xd9), w(0x24), w(0xb2),\ + w(0x76), w(0x5b), w(0xa2), w(0x49), w(0x6d), w(0x8b), w(0xd1), w(0x25),\ + w(0x72), w(0xf8), w(0xf6), w(0x64), w(0x86), w(0x68), w(0x98), w(0x16),\ + w(0xd4), w(0xa4), w(0x5c), w(0xcc), w(0x5d), w(0x65), w(0xb6), w(0x92),\ + w(0x6c), w(0x70), w(0x48), w(0x50), w(0xfd), w(0xed), w(0xb9), w(0xda),\ + w(0x5e), w(0x15), w(0x46), w(0x57), w(0xa7), w(0x8d), w(0x9d), w(0x84),\ + w(0x90), w(0xd8), w(0xab), w(0x00), w(0x8c), w(0xbc), w(0xd3), w(0x0a),\ + w(0xf7), w(0xe4), w(0x58), w(0x05), w(0xb8), w(0xb3), w(0x45), w(0x06),\ + w(0xd0), w(0x2c), w(0x1e), w(0x8f), w(0xca), w(0x3f), w(0x0f), w(0x02),\ + w(0xc1), w(0xaf), w(0xbd), w(0x03), w(0x01), w(0x13), w(0x8a), w(0x6b),\ + w(0x3a), w(0x91), w(0x11), w(0x41), w(0x4f), w(0x67), w(0xdc), w(0xea),\ + w(0x97), w(0xf2), w(0xcf), w(0xce), w(0xf0), w(0xb4), w(0xe6), w(0x73),\ + w(0x96), w(0xac), w(0x74), w(0x22), w(0xe7), w(0xad), w(0x35), w(0x85),\ + w(0xe2), w(0xf9), w(0x37), w(0xe8), w(0x1c), w(0x75), w(0xdf), w(0x6e),\ + w(0x47), w(0xf1), w(0x1a), w(0x71), w(0x1d), w(0x29), w(0xc5), w(0x89),\ + w(0x6f), w(0xb7), w(0x62), w(0x0e), w(0xaa), w(0x18), w(0xbe), w(0x1b),\ + w(0xfc), w(0x56), w(0x3e), w(0x4b), w(0xc6), w(0xd2), w(0x79), w(0x20),\ + w(0x9a), w(0xdb), w(0xc0), w(0xfe), w(0x78), w(0xcd), w(0x5a), w(0xf4),\ + w(0x1f), w(0xdd), w(0xa8), w(0x33), w(0x88), w(0x07), w(0xc7), w(0x31),\ + w(0xb1), w(0x12), w(0x10), w(0x59), w(0x27), w(0x80), w(0xec), w(0x5f),\ + w(0x60), w(0x51), w(0x7f), w(0xa9), w(0x19), w(0xb5), w(0x4a), w(0x0d),\ + w(0x2d), w(0xe5), w(0x7a), w(0x9f), w(0x93), w(0xc9), w(0x9c), w(0xef),\ + w(0xa0), w(0xe0), w(0x3b), w(0x4d), w(0xae), w(0x2a), w(0xf5), w(0xb0),\ + w(0xc8), w(0xeb), w(0xbb), w(0x3c), w(0x83), w(0x53), w(0x99), w(0x61),\ + w(0x17), w(0x2b), w(0x04), w(0x7e), w(0xba), w(0x77), w(0xd6), w(0x26),\ + w(0xe1), w(0x69), w(0x14), w(0x63), w(0x55), w(0x21), w(0x0c), w(0x7d) } + +#define mm_data(w) {\ + w(0x00), w(0x01), w(0x02), w(0x03), w(0x04), w(0x05), w(0x06), w(0x07),\ + w(0x08), w(0x09), w(0x0a), w(0x0b), w(0x0c), w(0x0d), w(0x0e), w(0x0f),\ + w(0x10), w(0x11), w(0x12), w(0x13), w(0x14), w(0x15), w(0x16), w(0x17),\ + w(0x18), w(0x19), w(0x1a), w(0x1b), w(0x1c), w(0x1d), w(0x1e), w(0x1f),\ + w(0x20), w(0x21), w(0x22), w(0x23), w(0x24), w(0x25), w(0x26), w(0x27),\ + w(0x28), w(0x29), w(0x2a), w(0x2b), w(0x2c), w(0x2d), w(0x2e), w(0x2f),\ + w(0x30), w(0x31), w(0x32), w(0x33), w(0x34), w(0x35), w(0x36), w(0x37),\ + w(0x38), w(0x39), w(0x3a), w(0x3b), w(0x3c), w(0x3d), w(0x3e), w(0x3f),\ + w(0x40), w(0x41), w(0x42), w(0x43), w(0x44), w(0x45), w(0x46), w(0x47),\ + w(0x48), w(0x49), w(0x4a), w(0x4b), w(0x4c), w(0x4d), w(0x4e), w(0x4f),\ + w(0x50), w(0x51), w(0x52), w(0x53), w(0x54), w(0x55), w(0x56), w(0x57),\ + w(0x58), w(0x59), w(0x5a), w(0x5b), w(0x5c), w(0x5d), w(0x5e), w(0x5f),\ + w(0x60), w(0x61), w(0x62), w(0x63), w(0x64), w(0x65), w(0x66), w(0x67),\ + w(0x68), w(0x69), w(0x6a), w(0x6b), w(0x6c), w(0x6d), w(0x6e), w(0x6f),\ + w(0x70), w(0x71), w(0x72), w(0x73), w(0x74), w(0x75), w(0x76), w(0x77),\ + w(0x78), w(0x79), w(0x7a), w(0x7b), w(0x7c), w(0x7d), w(0x7e), w(0x7f),\ + w(0x80), w(0x81), w(0x82), w(0x83), w(0x84), w(0x85), w(0x86), w(0x87),\ + w(0x88), w(0x89), w(0x8a), w(0x8b), w(0x8c), w(0x8d), w(0x8e), w(0x8f),\ + w(0x90), w(0x91), w(0x92), w(0x93), w(0x94), w(0x95), w(0x96), w(0x97),\ + w(0x98), w(0x99), w(0x9a), w(0x9b), w(0x9c), w(0x9d), w(0x9e), w(0x9f),\ + w(0xa0), w(0xa1), w(0xa2), w(0xa3), w(0xa4), w(0xa5), w(0xa6), w(0xa7),\ + w(0xa8), w(0xa9), w(0xaa), w(0xab), w(0xac), w(0xad), w(0xae), w(0xaf),\ + w(0xb0), w(0xb1), w(0xb2), w(0xb3), w(0xb4), w(0xb5), w(0xb6), w(0xb7),\ + w(0xb8), w(0xb9), w(0xba), w(0xbb), w(0xbc), w(0xbd), w(0xbe), w(0xbf),\ + w(0xc0), w(0xc1), w(0xc2), w(0xc3), w(0xc4), w(0xc5), w(0xc6), w(0xc7),\ + w(0xc8), w(0xc9), w(0xca), w(0xcb), w(0xcc), w(0xcd), w(0xce), w(0xcf),\ + w(0xd0), w(0xd1), w(0xd2), w(0xd3), w(0xd4), w(0xd5), w(0xd6), w(0xd7),\ + w(0xd8), w(0xd9), w(0xda), w(0xdb), w(0xdc), w(0xdd), w(0xde), w(0xdf),\ + w(0xe0), w(0xe1), w(0xe2), w(0xe3), w(0xe4), w(0xe5), w(0xe6), w(0xe7),\ + w(0xe8), w(0xe9), w(0xea), w(0xeb), w(0xec), w(0xed), w(0xee), w(0xef),\ + w(0xf0), w(0xf1), w(0xf2), w(0xf3), w(0xf4), w(0xf5), w(0xf6), w(0xf7),\ + w(0xf8), w(0xf9), w(0xfa), w(0xfb), w(0xfc), w(0xfd), w(0xfe), w(0xff) } + +#define rc_data(w) {\ + w(0x01), w(0x02), w(0x04), w(0x08), w(0x10),w(0x20), w(0x40), w(0x80),\ + w(0x1b), w(0x36) } + +#define h0(x) (x) + +#define w0(p) bytes2word(p, 0, 0, 0) +#define w1(p) bytes2word(0, p, 0, 0) +#define w2(p) bytes2word(0, 0, p, 0) +#define w3(p) bytes2word(0, 0, 0, p) + +#define u0(p) bytes2word(f2(p), p, p, f3(p)) +#define u1(p) bytes2word(f3(p), f2(p), p, p) +#define u2(p) bytes2word(p, f3(p), f2(p), p) +#define u3(p) bytes2word(p, p, f3(p), f2(p)) + +#define v0(p) bytes2word(fe(p), f9(p), fd(p), fb(p)) +#define v1(p) bytes2word(fb(p), fe(p), f9(p), fd(p)) +#define v2(p) bytes2word(fd(p), fb(p), fe(p), f9(p)) +#define v3(p) bytes2word(f9(p), fd(p), fb(p), fe(p)) + +#define f2(x) ((x<<1) ^ (((x>>7) & 1) * WPOLY)) +#define f4(x) ((x<<2) ^ (((x>>6) & 1) * WPOLY) ^ (((x>>6) & 2) * WPOLY)) +#define f8(x) ((x<<3) ^ (((x>>5) & 1) * WPOLY) ^ (((x>>5) & 2) * WPOLY) \ + ^ (((x>>5) & 4) * WPOLY)) +#define f3(x) (f2(x) ^ x) +#define f9(x) (f8(x) ^ x) +#define fb(x) (f8(x) ^ f2(x) ^ x) +#define fd(x) (f8(x) ^ f4(x) ^ x) +#define fe(x) (f8(x) ^ f4(x) ^ f2(x)) + +#define t_dec(m,n) t_##m##n +#define t_set(m,n) t_##m##n +#define t_use(m,n) t_##m##n + +#if defined(_MSC_VER) && defined(TABLE_ALIGN) +#define ALIGN __declspec(align(TABLE_ALIGN)) +#else +#define ALIGN +#endif + +AES_RETURN aes_encrypt_key128(const unsigned char *key, aes_encrypt_ctx cx[1]); +AES_RETURN aes_encrypt_key192(const unsigned char *key, aes_encrypt_ctx cx[1]); +AES_RETURN aes_encrypt_key256(const unsigned char *key, aes_encrypt_ctx cx[1]); +AES_RETURN aes_encrypt_key(const unsigned char *key, int key_len, aes_encrypt_ctx cx[1]); +AES_RETURN aes_encrypt(const unsigned char *in, unsigned char *out, const aes_encrypt_ctx cx[1]); +AES_RETURN aes_decrypt_key128(const unsigned char *key, aes_decrypt_ctx cx[1]); +AES_RETURN aes_decrypt_key192(const unsigned char *key, aes_decrypt_ctx cx[1]); +AES_RETURN aes_decrypt_key256(const unsigned char *key, aes_decrypt_ctx cx[1]); +AES_RETURN aes_decrypt_key(const unsigned char *key, int key_len, aes_decrypt_ctx cx[1]); +AES_RETURN aes_decrypt(const unsigned char *in, unsigned char *out, const aes_decrypt_ctx cx[1]); + +#endif /* RIJNGDAEL_INTERNAL */