diff options
author | Igor Pavlov <ipavlov@users.sourceforge.net> | 2007-07-24 04:00:00 +0400 |
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committer | Kornel LesiĆski <kornel@geekhood.net> | 2016-05-28 02:15:52 +0300 |
commit | 980e181dcc9d64312a4dddfa58f80770506f27f5 (patch) | |
tree | 4ab20c1b4c7ebfe0f5fbf39ec2ce2cd3022ebf66 /CPP/7zip/Crypto/AES/aescrypt.c | |
parent | 7038848692e7049234f223703522681a19db49a5 (diff) |
4.50 beta
Diffstat (limited to 'CPP/7zip/Crypto/AES/aescrypt.c')
-rwxr-xr-x | CPP/7zip/Crypto/AES/aescrypt.c | 421 |
1 files changed, 0 insertions, 421 deletions
diff --git a/CPP/7zip/Crypto/AES/aescrypt.c b/CPP/7zip/Crypto/AES/aescrypt.c deleted file mode 100755 index 095a61c4..00000000 --- a/CPP/7zip/Crypto/AES/aescrypt.c +++ /dev/null @@ -1,421 +0,0 @@ -/* - ------------------------------------------------------------------------- - Copyright (c) 2001, Dr Brian Gladman <brg@gladman.me.uk>, Worcester, UK. - All rights reserved. - - LICENSE TERMS - - The free distribution and use of this software in both source and binary - form is allowed (with or without changes) provided that: - - 1. distributions of this source code include the above copyright - notice, this list of conditions and the following disclaimer; - - 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. - - 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 fitness for purpose. - ------------------------------------------------------------------------- - Issue Date: 29/07/2002 - - This file contains the code for implementing encryption and decryption - for AES (Rijndael) for block and key sizes of 16, 24 and 32 bytes. It - can optionally be replaced by code written in assembler using NASM. -*/ - -#include "aesopt.h" - -#if defined(BLOCK_SIZE) && (BLOCK_SIZE & 7) -#error An illegal block size has been specified. -#endif - -#define unused 77 /* Sunset Strip */ - -#define si(y,x,k,c) s(y,c) = word_in(x + 4 * c) ^ k[c] -#define so(y,x,c) word_out(y + 4 * c, s(x,c)) - -#if BLOCK_SIZE == 16 - -#if defined(ARRAYS) -#define locals(y,x) x[4],y[4] -#else -#define locals(y,x) x##0,x##1,x##2,x##3,y##0,y##1,y##2,y##3 - /* - the following defines prevent the compiler requiring the declaration - of generated but unused variables in the fwd_var and inv_var macros - */ -#define b04 unused -#define b05 unused -#define b06 unused -#define b07 unused -#define b14 unused -#define b15 unused -#define b16 unused -#define b17 unused -#endif -#define l_copy(y, x) s(y,0) = s(x,0); s(y,1) = s(x,1); \ - s(y,2) = s(x,2); s(y,3) = s(x,3); -#define state_in(y,x,k) si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); si(y,x,k,3) -#define state_out(y,x) so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3) -#define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3) - -#elif BLOCK_SIZE == 24 - -#if defined(ARRAYS) -#define locals(y,x) x[6],y[6] -#else -#define locals(y,x) x##0,x##1,x##2,x##3,x##4,x##5, \ - y##0,y##1,y##2,y##3,y##4,y##5 -#define b06 unused -#define b07 unused -#define b16 unused -#define b17 unused -#endif -#define l_copy(y, x) s(y,0) = s(x,0); s(y,1) = s(x,1); \ - s(y,2) = s(x,2); s(y,3) = s(x,3); \ - s(y,4) = s(x,4); s(y,5) = s(x,5); -#define state_in(y,x,k) si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); \ - si(y,x,k,3); si(y,x,k,4); si(y,x,k,5) -#define state_out(y,x) so(y,x,0); so(y,x,1); so(y,x,2); \ - so(y,x,3); so(y,x,4); so(y,x,5) -#define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); \ - rm(y,x,k,3); rm(y,x,k,4); rm(y,x,k,5) -#else - -#if defined(ARRAYS) -#define locals(y,x) x[8],y[8] -#else -#define locals(y,x) x##0,x##1,x##2,x##3,x##4,x##5,x##6,x##7, \ - y##0,y##1,y##2,y##3,y##4,y##5,y##6,y##7 -#endif -#define l_copy(y, x) s(y,0) = s(x,0); s(y,1) = s(x,1); \ - s(y,2) = s(x,2); s(y,3) = s(x,3); \ - s(y,4) = s(x,4); s(y,5) = s(x,5); \ - s(y,6) = s(x,6); s(y,7) = s(x,7); - -#if BLOCK_SIZE == 32 - -#define state_in(y,x,k) si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); si(y,x,k,3); \ - si(y,x,k,4); si(y,x,k,5); si(y,x,k,6); si(y,x,k,7) -#define state_out(y,x) so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3); \ - so(y,x,4); so(y,x,5); so(y,x,6); so(y,x,7) -#define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3); \ - rm(y,x,k,4); rm(y,x,k,5); rm(y,x,k,6); rm(y,x,k,7) -#else - -#define state_in(y,x,k) \ -switch(nc) \ -{ case 8: si(y,x,k,7); si(y,x,k,6); \ - case 6: si(y,x,k,5); si(y,x,k,4); \ - case 4: si(y,x,k,3); si(y,x,k,2); \ - si(y,x,k,1); si(y,x,k,0); \ -} - -#define state_out(y,x) \ -switch(nc) \ -{ case 8: so(y,x,7); so(y,x,6); \ - case 6: so(y,x,5); so(y,x,4); \ - case 4: so(y,x,3); so(y,x,2); \ - so(y,x,1); so(y,x,0); \ -} - -#if defined(FAST_VARIABLE) - -#define round(rm,y,x,k) \ -switch(nc) \ -{ case 8: rm(y,x,k,7); rm(y,x,k,6); \ - rm(y,x,k,5); rm(y,x,k,4); \ - rm(y,x,k,3); rm(y,x,k,2); \ - rm(y,x,k,1); rm(y,x,k,0); \ - break; \ - case 6: rm(y,x,k,5); rm(y,x,k,4); \ - rm(y,x,k,3); rm(y,x,k,2); \ - rm(y,x,k,1); rm(y,x,k,0); \ - break; \ - case 4: rm(y,x,k,3); rm(y,x,k,2); \ - rm(y,x,k,1); rm(y,x,k,0); \ - break; \ -} -#else - -#define round(rm,y,x,k) \ -switch(nc) \ -{ case 8: rm(y,x,k,7); rm(y,x,k,6); \ - case 6: rm(y,x,k,5); rm(y,x,k,4); \ - case 4: rm(y,x,k,3); rm(y,x,k,2); \ - rm(y,x,k,1); rm(y,x,k,0); \ -} - -#endif - -#endif -#endif - -#if defined(ENCRYPTION) - -/* I am grateful to Frank Yellin for the following construction - (and that for decryption) which, given the column (c) of the - output state variable, gives the input state variables which - are needed in its computation for each row (r) of the state. - - For the fixed block size options, compilers should be able to - reduce this complex expression (and the equivalent one for - decryption) to a static variable reference at compile time. - But for variable block size code, there will be some limbs on - which conditional clauses will be returned. -*/ - -/* y = output word, x = input word, r = row, c = column for r = 0, - 1, 2 and 3 = column accessed for row r. -*/ - -#define fwd_var(x,r,c)\ - ( r == 0 ? \ - ( c == 0 ? s(x,0) \ - : c == 1 ? s(x,1) \ - : c == 2 ? s(x,2) \ - : c == 3 ? s(x,3) \ - : c == 4 ? s(x,4) \ - : c == 5 ? s(x,5) \ - : c == 6 ? s(x,6) \ - : s(x,7))\ - : r == 1 ? \ - ( c == 0 ? s(x,1) \ - : c == 1 ? s(x,2) \ - : c == 2 ? s(x,3) \ - : c == 3 ? nc == 4 ? s(x,0) : s(x,4) \ - : c == 4 ? s(x,5) \ - : c == 5 ? nc == 8 ? s(x,6) : s(x,0) \ - : c == 6 ? s(x,7) \ - : s(x,0))\ - : r == 2 ? \ - ( c == 0 ? nc == 8 ? s(x,3) : s(x,2) \ - : c == 1 ? nc == 8 ? s(x,4) : s(x,3) \ - : c == 2 ? nc == 4 ? s(x,0) : nc == 8 ? s(x,5) : s(x,4) \ - : c == 3 ? nc == 4 ? s(x,1) : nc == 8 ? s(x,6) : s(x,5) \ - : c == 4 ? nc == 8 ? s(x,7) : s(x,0) \ - : c == 5 ? nc == 8 ? s(x,0) : s(x,1) \ - : c == 6 ? s(x,1) \ - : s(x,2))\ - : \ - ( c == 0 ? nc == 8 ? s(x,4) : s(x,3) \ - : c == 1 ? nc == 4 ? s(x,0) : nc == 8 ? s(x,5) : s(x,4) \ - : c == 2 ? nc == 4 ? s(x,1) : nc == 8 ? s(x,6) : s(x,5) \ - : c == 3 ? nc == 4 ? s(x,2) : nc == 8 ? s(x,7) : s(x,0) \ - : c == 4 ? nc == 8 ? s(x,0) : s(x,1) \ - : c == 5 ? nc == 8 ? s(x,1) : s(x,2) \ - : c == 6 ? s(x,2) \ - : s(x,3))) - -#if defined(FT4_SET) -#undef dec_fmvars -#define dec_fmvars -#define fwd_rnd(y,x,k,c) s(y,c)= (k)[c] ^ four_tables(x,ft_tab,fwd_var,rf1,c) -#elif defined(FT1_SET) -#undef dec_fmvars -#define dec_fmvars -#define fwd_rnd(y,x,k,c) s(y,c)= (k)[c] ^ one_table(x,upr,ft_tab,fwd_var,rf1,c) -#else -#define fwd_rnd(y,x,k,c) s(y,c) = fwd_mcol(no_table(x,s_box,fwd_var,rf1,c)) ^ (k)[c] -#endif - -#if defined(FL4_SET) -#define fwd_lrnd(y,x,k,c) s(y,c)= (k)[c] ^ four_tables(x,fl_tab,fwd_var,rf1,c) -#elif defined(FL1_SET) -#define fwd_lrnd(y,x,k,c) s(y,c)= (k)[c] ^ one_table(x,ups,fl_tab,fwd_var,rf1,c) -#else -#define fwd_lrnd(y,x,k,c) s(y,c) = no_table(x,s_box,fwd_var,rf1,c) ^ (k)[c] -#endif - -aes_rval aes_enc_blk(const unsigned char in_blk[], unsigned char out_blk[], const aes_ctx cx[1]) -{ aes_32t locals(b0, b1); - const aes_32t *kp = cx->k_sch; - dec_fmvars /* declare variables for fwd_mcol() if needed */ - - if(!(cx->n_blk & 1)) return aes_bad; - - state_in(b0, in_blk, kp); - -#if (ENC_UNROLL == FULL) - - kp += (cx->n_rnd - 9) * nc; - - switch(cx->n_rnd) - { - case 14: round(fwd_rnd, b1, b0, kp - 4 * nc); - round(fwd_rnd, b0, b1, kp - 3 * nc); - case 12: round(fwd_rnd, b1, b0, kp - 2 * nc); - round(fwd_rnd, b0, b1, kp - nc); - case 10: round(fwd_rnd, b1, b0, kp ); - round(fwd_rnd, b0, b1, kp + nc); - round(fwd_rnd, b1, b0, kp + 2 * nc); - round(fwd_rnd, b0, b1, kp + 3 * nc); - round(fwd_rnd, b1, b0, kp + 4 * nc); - round(fwd_rnd, b0, b1, kp + 5 * nc); - round(fwd_rnd, b1, b0, kp + 6 * nc); - round(fwd_rnd, b0, b1, kp + 7 * nc); - round(fwd_rnd, b1, b0, kp + 8 * nc); - round(fwd_lrnd, b0, b1, kp + 9 * nc); - } -#else - -#if (ENC_UNROLL == PARTIAL) - { aes_32t rnd; - for(rnd = 0; rnd < (cx->n_rnd >> 1) - 1; ++rnd) - { - kp += nc; - round(fwd_rnd, b1, b0, kp); - kp += nc; - round(fwd_rnd, b0, b1, kp); - } - kp += nc; - round(fwd_rnd, b1, b0, kp); -#else - { aes_32t rnd, *p0 = b0, *p1 = b1, *pt; - for(rnd = 0; rnd < cx->n_rnd - 1; ++rnd) - { - kp += nc; - round(fwd_rnd, p1, p0, kp); - pt = p0, p0 = p1, p1 = pt; - } -#endif - kp += nc; - round(fwd_lrnd, b0, b1, kp); - } -#endif - - state_out(out_blk, b0); - return aes_good; -} - -#endif - -#if defined(DECRYPTION) - -#define inv_var(x,r,c) \ - ( r == 0 ? \ - ( c == 0 ? s(x,0) \ - : c == 1 ? s(x,1) \ - : c == 2 ? s(x,2) \ - : c == 3 ? s(x,3) \ - : c == 4 ? s(x,4) \ - : c == 5 ? s(x,5) \ - : c == 6 ? s(x,6) \ - : s(x,7))\ - : r == 1 ? \ - ( c == 0 ? nc == 4 ? s(x,3) : nc == 8 ? s(x,7) : s(x,5) \ - : c == 1 ? s(x,0) \ - : c == 2 ? s(x,1) \ - : c == 3 ? s(x,2) \ - : c == 4 ? s(x,3) \ - : c == 5 ? s(x,4) \ - : c == 6 ? s(x,5) \ - : s(x,6))\ - : r == 2 ? \ - ( c == 0 ? nc == 4 ? s(x,2) : nc == 8 ? s(x,5) : s(x,4) \ - : c == 1 ? nc == 4 ? s(x,3) : nc == 8 ? s(x,6) : s(x,5) \ - : c == 2 ? nc == 8 ? s(x,7) : s(x,0) \ - : c == 3 ? nc == 8 ? s(x,0) : s(x,1) \ - : c == 4 ? nc == 8 ? s(x,1) : s(x,2) \ - : c == 5 ? nc == 8 ? s(x,2) : s(x,3) \ - : c == 6 ? s(x,3) \ - : s(x,4))\ - : \ - ( c == 0 ? nc == 4 ? s(x,1) : nc == 8 ? s(x,4) : s(x,3) \ - : c == 1 ? nc == 4 ? s(x,2) : nc == 8 ? s(x,5) : s(x,4) \ - : c == 2 ? nc == 4 ? s(x,3) : nc == 8 ? s(x,6) : s(x,5) \ - : c == 3 ? nc == 8 ? s(x,7) : s(x,0) \ - : c == 4 ? nc == 8 ? s(x,0) : s(x,1) \ - : c == 5 ? nc == 8 ? s(x,1) : s(x,2) \ - : c == 6 ? s(x,2) \ - : s(x,3))) - -#if defined(IT4_SET) -#undef dec_imvars -#define dec_imvars -#define inv_rnd(y,x,k,c) s(y,c)= (k)[c] ^ four_tables(x,it_tab,inv_var,rf1,c) -#elif defined(IT1_SET) -#undef dec_imvars -#define dec_imvars -#define inv_rnd(y,x,k,c) s(y,c)= (k)[c] ^ one_table(x,upr,it_tab,inv_var,rf1,c) -#else -#define inv_rnd(y,x,k,c) s(y,c) = inv_mcol(no_table(x,inv_s_box,inv_var,rf1,c) ^ (k)[c]) -#endif - -#if defined(IL4_SET) -#define inv_lrnd(y,x,k,c) s(y,c)= (k)[c] ^ four_tables(x,il_tab,inv_var,rf1,c) -#elif defined(IL1_SET) -#define inv_lrnd(y,x,k,c) s(y,c)= (k)[c] ^ one_table(x,ups,il_tab,inv_var,rf1,c) -#else -#define inv_lrnd(y,x,k,c) s(y,c) = no_table(x,inv_s_box,inv_var,rf1,c) ^ (k)[c] -#endif - -aes_rval aes_dec_blk(const unsigned char in_blk[], unsigned char out_blk[], const aes_ctx cx[1]) -{ aes_32t locals(b0, b1); - const aes_32t *kp = cx->k_sch + nc * cx->n_rnd; - dec_imvars /* declare variables for inv_mcol() if needed */ - - if(!(cx->n_blk & 2)) return aes_bad; - - state_in(b0, in_blk, kp); - -#if (DEC_UNROLL == FULL) - - kp = cx->k_sch + 9 * nc; - switch(cx->n_rnd) - { - case 14: round(inv_rnd, b1, b0, kp + 4 * nc); - round(inv_rnd, b0, b1, kp + 3 * nc); - case 12: round(inv_rnd, b1, b0, kp + 2 * nc); - round(inv_rnd, b0, b1, kp + nc ); - case 10: round(inv_rnd, b1, b0, kp ); - round(inv_rnd, b0, b1, kp - nc); - round(inv_rnd, b1, b0, kp - 2 * nc); - round(inv_rnd, b0, b1, kp - 3 * nc); - round(inv_rnd, b1, b0, kp - 4 * nc); - round(inv_rnd, b0, b1, kp - 5 * nc); - round(inv_rnd, b1, b0, kp - 6 * nc); - round(inv_rnd, b0, b1, kp - 7 * nc); - round(inv_rnd, b1, b0, kp - 8 * nc); - round(inv_lrnd, b0, b1, kp - 9 * nc); - } -#else - -#if (DEC_UNROLL == PARTIAL) - { aes_32t rnd; - for(rnd = 0; rnd < (cx->n_rnd >> 1) - 1; ++rnd) - { - kp -= nc; - round(inv_rnd, b1, b0, kp); - kp -= nc; - round(inv_rnd, b0, b1, kp); - } - kp -= nc; - round(inv_rnd, b1, b0, kp); -#else - { aes_32t rnd, *p0 = b0, *p1 = b1, *pt; - for(rnd = 0; rnd < cx->n_rnd - 1; ++rnd) - { - kp -= nc; - round(inv_rnd, p1, p0, kp); - pt = p0, p0 = p1, p1 = pt; - } -#endif - kp -= nc; - round(inv_lrnd, b0, b1, kp); - } -#endif - - state_out(out_blk, b0); - return aes_good; -} - -#endif |