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Posted to commits@milagro.apache.org by br...@apache.org on 2019/01/15 15:19:55 UTC
[50/51] [partial] incubator-milagro-crypto git commit: update code
http://git-wip-us.apache.org/repos/asf/incubator-milagro-crypto/blob/1add7560/version22/c/aes.c
----------------------------------------------------------------------
diff --git a/version22/c/aes.c b/version22/c/aes.c
deleted file mode 100644
index f876c51..0000000
--- a/version22/c/aes.c
+++ /dev/null
@@ -1,702 +0,0 @@
-/*
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements. See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied. See the License for the
-specific language governing permissions and limitations
-under the License.
-*/
-
-
-/*
- * Implementation of the NIST Advanced Ecryption Standard
- *
- * SU=m, SU is Stack Usage
- */
-
-#include <stdlib.h>
-#include "arch.h"
-#include "amcl.h"
-
-/* this is fixed */
-#define NB 4
-
-/* Rotates 32-bit word left by 1, 2 or 3 byte */
-
-#define ROTL8(x) (((x)<<8)|((x)>>24))
-#define ROTL16(x) (((x)<<16)|((x)>>16))
-#define ROTL24(x) (((x)<<24)|((x)>>8))
-
-static const uchar InCo[4]= {0xB,0xD,0x9,0xE}; /* Inverse Coefficients */
-
-static const uchar ptab[]=
-{
- 1,3,5,15,17,51,85,255,26,46,114,150,161,248,19,53,
- 95,225,56,72,216,115,149,164,247,2,6,10,30,34,102,170,
- 229,52,92,228,55,89,235,38,106,190,217,112,144,171,230,49,
- 83,245,4,12,20,60,68,204,79,209,104,184,211,110,178,205,
- 76,212,103,169,224,59,77,215,98,166,241,8,24,40,120,136,
- 131,158,185,208,107,189,220,127,129,152,179,206,73,219,118,154,
- 181,196,87,249,16,48,80,240,11,29,39,105,187,214,97,163,
- 254,25,43,125,135,146,173,236,47,113,147,174,233,32,96,160,
- 251,22,58,78,210,109,183,194,93,231,50,86,250,21,63,65,
- 195,94,226,61,71,201,64,192,91,237,44,116,156,191,218,117,
- 159,186,213,100,172,239,42,126,130,157,188,223,122,142,137,128,
- 155,182,193,88,232,35,101,175,234,37,111,177,200,67,197,84,
- 252,31,33,99,165,244,7,9,27,45,119,153,176,203,70,202,
- 69,207,74,222,121,139,134,145,168,227,62,66,198,81,243,14,
- 18,54,90,238,41,123,141,140,143,138,133,148,167,242,13,23,
- 57,75,221,124,132,151,162,253,28,36,108,180,199,82,246,1
-};
-
-static const uchar ltab[]=
-{
- 0,255,25,1,50,2,26,198,75,199,27,104,51,238,223,3,
- 100,4,224,14,52,141,129,239,76,113,8,200,248,105,28,193,
- 125,194,29,181,249,185,39,106,77,228,166,114,154,201,9,120,
- 101,47,138,5,33,15,225,36,18,240,130,69,53,147,218,142,
- 150,143,219,189,54,208,206,148,19,92,210,241,64,70,131,56,
- 102,221,253,48,191,6,139,98,179,37,226,152,34,136,145,16,
- 126,110,72,195,163,182,30,66,58,107,40,84,250,133,61,186,
- 43,121,10,21,155,159,94,202,78,212,172,229,243,115,167,87,
- 175,88,168,80,244,234,214,116,79,174,233,213,231,230,173,232,
- 44,215,117,122,235,22,11,245,89,203,95,176,156,169,81,160,
- 127,12,246,111,23,196,73,236,216,67,31,45,164,118,123,183,
- 204,187,62,90,251,96,177,134,59,82,161,108,170,85,41,157,
- 151,178,135,144,97,190,220,252,188,149,207,205,55,63,91,209,
- 83,57,132,60,65,162,109,71,20,42,158,93,86,242,211,171,
- 68,17,146,217,35,32,46,137,180,124,184,38,119,153,227,165,
- 103,74,237,222,197,49,254,24,13,99,140,128,192,247,112,7
-};
-
-static const uchar fbsub[]=
-{
- 99,124,119,123,242,107,111,197,48,1,103,43,254,215,171,118,
- 202,130,201,125,250,89,71,240,173,212,162,175,156,164,114,192,
- 183,253,147,38,54,63,247,204,52,165,229,241,113,216,49,21,
- 4,199,35,195,24,150,5,154,7,18,128,226,235,39,178,117,
- 9,131,44,26,27,110,90,160,82,59,214,179,41,227,47,132,
- 83,209,0,237,32,252,177,91,106,203,190,57,74,76,88,207,
- 208,239,170,251,67,77,51,133,69,249,2,127,80,60,159,168,
- 81,163,64,143,146,157,56,245,188,182,218,33,16,255,243,210,
- 205,12,19,236,95,151,68,23,196,167,126,61,100,93,25,115,
- 96,129,79,220,34,42,144,136,70,238,184,20,222,94,11,219,
- 224,50,58,10,73,6,36,92,194,211,172,98,145,149,228,121,
- 231,200,55,109,141,213,78,169,108,86,244,234,101,122,174,8,
- 186,120,37,46,28,166,180,198,232,221,116,31,75,189,139,138,
- 112,62,181,102,72,3,246,14,97,53,87,185,134,193,29,158,
- 225,248,152,17,105,217,142,148,155,30,135,233,206,85,40,223,
- 140,161,137,13,191,230,66,104,65,153,45,15,176,84,187,22
-};
-
-static const uchar rbsub[]=
-{
- 82,9,106,213,48,54,165,56,191,64,163,158,129,243,215,251,
- 124,227,57,130,155,47,255,135,52,142,67,68,196,222,233,203,
- 84,123,148,50,166,194,35,61,238,76,149,11,66,250,195,78,
- 8,46,161,102,40,217,36,178,118,91,162,73,109,139,209,37,
- 114,248,246,100,134,104,152,22,212,164,92,204,93,101,182,146,
- 108,112,72,80,253,237,185,218,94,21,70,87,167,141,157,132,
- 144,216,171,0,140,188,211,10,247,228,88,5,184,179,69,6,
- 208,44,30,143,202,63,15,2,193,175,189,3,1,19,138,107,
- 58,145,17,65,79,103,220,234,151,242,207,206,240,180,230,115,
- 150,172,116,34,231,173,53,133,226,249,55,232,28,117,223,110,
- 71,241,26,113,29,41,197,137,111,183,98,14,170,24,190,27,
- 252,86,62,75,198,210,121,32,154,219,192,254,120,205,90,244,
- 31,221,168,51,136,7,199,49,177,18,16,89,39,128,236,95,
- 96,81,127,169,25,181,74,13,45,229,122,159,147,201,156,239,
- 160,224,59,77,174,42,245,176,200,235,187,60,131,83,153,97,
- 23,43,4,126,186,119,214,38,225,105,20,99,85,33,12,125
-};
-
-static const unsign32 rco[]=
-{1,2,4,8,16,32,64,128,27,54,108,216,171,77,154,47};
-
-static const unsign32 ftable[]=
-{
- 0xa56363c6,0x847c7cf8,0x997777ee,0x8d7b7bf6,0xdf2f2ff,0xbd6b6bd6,
- 0xb16f6fde,0x54c5c591,0x50303060,0x3010102,0xa96767ce,0x7d2b2b56,
- 0x19fefee7,0x62d7d7b5,0xe6abab4d,0x9a7676ec,0x45caca8f,0x9d82821f,
- 0x40c9c989,0x877d7dfa,0x15fafaef,0xeb5959b2,0xc947478e,0xbf0f0fb,
- 0xecadad41,0x67d4d4b3,0xfda2a25f,0xeaafaf45,0xbf9c9c23,0xf7a4a453,
- 0x967272e4,0x5bc0c09b,0xc2b7b775,0x1cfdfde1,0xae93933d,0x6a26264c,
- 0x5a36366c,0x413f3f7e,0x2f7f7f5,0x4fcccc83,0x5c343468,0xf4a5a551,
- 0x34e5e5d1,0x8f1f1f9,0x937171e2,0x73d8d8ab,0x53313162,0x3f15152a,
- 0xc040408,0x52c7c795,0x65232346,0x5ec3c39d,0x28181830,0xa1969637,
- 0xf05050a,0xb59a9a2f,0x907070e,0x36121224,0x9b80801b,0x3de2e2df,
- 0x26ebebcd,0x6927274e,0xcdb2b27f,0x9f7575ea,0x1b090912,0x9e83831d,
- 0x742c2c58,0x2e1a1a34,0x2d1b1b36,0xb26e6edc,0xee5a5ab4,0xfba0a05b,
- 0xf65252a4,0x4d3b3b76,0x61d6d6b7,0xceb3b37d,0x7b292952,0x3ee3e3dd,
- 0x712f2f5e,0x97848413,0xf55353a6,0x68d1d1b9,0x0,0x2cededc1,
- 0x60202040,0x1ffcfce3,0xc8b1b179,0xed5b5bb6,0xbe6a6ad4,0x46cbcb8d,
- 0xd9bebe67,0x4b393972,0xde4a4a94,0xd44c4c98,0xe85858b0,0x4acfcf85,
- 0x6bd0d0bb,0x2aefefc5,0xe5aaaa4f,0x16fbfbed,0xc5434386,0xd74d4d9a,
- 0x55333366,0x94858511,0xcf45458a,0x10f9f9e9,0x6020204,0x817f7ffe,
- 0xf05050a0,0x443c3c78,0xba9f9f25,0xe3a8a84b,0xf35151a2,0xfea3a35d,
- 0xc0404080,0x8a8f8f05,0xad92923f,0xbc9d9d21,0x48383870,0x4f5f5f1,
- 0xdfbcbc63,0xc1b6b677,0x75dadaaf,0x63212142,0x30101020,0x1affffe5,
- 0xef3f3fd,0x6dd2d2bf,0x4ccdcd81,0x140c0c18,0x35131326,0x2fececc3,
- 0xe15f5fbe,0xa2979735,0xcc444488,0x3917172e,0x57c4c493,0xf2a7a755,
- 0x827e7efc,0x473d3d7a,0xac6464c8,0xe75d5dba,0x2b191932,0x957373e6,
- 0xa06060c0,0x98818119,0xd14f4f9e,0x7fdcdca3,0x66222244,0x7e2a2a54,
- 0xab90903b,0x8388880b,0xca46468c,0x29eeeec7,0xd3b8b86b,0x3c141428,
- 0x79dedea7,0xe25e5ebc,0x1d0b0b16,0x76dbdbad,0x3be0e0db,0x56323264,
- 0x4e3a3a74,0x1e0a0a14,0xdb494992,0xa06060c,0x6c242448,0xe45c5cb8,
- 0x5dc2c29f,0x6ed3d3bd,0xefacac43,0xa66262c4,0xa8919139,0xa4959531,
- 0x37e4e4d3,0x8b7979f2,0x32e7e7d5,0x43c8c88b,0x5937376e,0xb76d6dda,
- 0x8c8d8d01,0x64d5d5b1,0xd24e4e9c,0xe0a9a949,0xb46c6cd8,0xfa5656ac,
- 0x7f4f4f3,0x25eaeacf,0xaf6565ca,0x8e7a7af4,0xe9aeae47,0x18080810,
- 0xd5baba6f,0x887878f0,0x6f25254a,0x722e2e5c,0x241c1c38,0xf1a6a657,
- 0xc7b4b473,0x51c6c697,0x23e8e8cb,0x7cdddda1,0x9c7474e8,0x211f1f3e,
- 0xdd4b4b96,0xdcbdbd61,0x868b8b0d,0x858a8a0f,0x907070e0,0x423e3e7c,
- 0xc4b5b571,0xaa6666cc,0xd8484890,0x5030306,0x1f6f6f7,0x120e0e1c,
- 0xa36161c2,0x5f35356a,0xf95757ae,0xd0b9b969,0x91868617,0x58c1c199,
- 0x271d1d3a,0xb99e9e27,0x38e1e1d9,0x13f8f8eb,0xb398982b,0x33111122,
- 0xbb6969d2,0x70d9d9a9,0x898e8e07,0xa7949433,0xb69b9b2d,0x221e1e3c,
- 0x92878715,0x20e9e9c9,0x49cece87,0xff5555aa,0x78282850,0x7adfdfa5,
- 0x8f8c8c03,0xf8a1a159,0x80898909,0x170d0d1a,0xdabfbf65,0x31e6e6d7,
- 0xc6424284,0xb86868d0,0xc3414182,0xb0999929,0x772d2d5a,0x110f0f1e,
- 0xcbb0b07b,0xfc5454a8,0xd6bbbb6d,0x3a16162c
-};
-
-static const unsign32 rtable[]=
-{
- 0x50a7f451,0x5365417e,0xc3a4171a,0x965e273a,0xcb6bab3b,0xf1459d1f,
- 0xab58faac,0x9303e34b,0x55fa3020,0xf66d76ad,0x9176cc88,0x254c02f5,
- 0xfcd7e54f,0xd7cb2ac5,0x80443526,0x8fa362b5,0x495ab1de,0x671bba25,
- 0x980eea45,0xe1c0fe5d,0x2752fc3,0x12f04c81,0xa397468d,0xc6f9d36b,
- 0xe75f8f03,0x959c9215,0xeb7a6dbf,0xda595295,0x2d83bed4,0xd3217458,
- 0x2969e049,0x44c8c98e,0x6a89c275,0x78798ef4,0x6b3e5899,0xdd71b927,
- 0xb64fe1be,0x17ad88f0,0x66ac20c9,0xb43ace7d,0x184adf63,0x82311ae5,
- 0x60335197,0x457f5362,0xe07764b1,0x84ae6bbb,0x1ca081fe,0x942b08f9,
- 0x58684870,0x19fd458f,0x876cde94,0xb7f87b52,0x23d373ab,0xe2024b72,
- 0x578f1fe3,0x2aab5566,0x728ebb2,0x3c2b52f,0x9a7bc586,0xa50837d3,
- 0xf2872830,0xb2a5bf23,0xba6a0302,0x5c8216ed,0x2b1ccf8a,0x92b479a7,
- 0xf0f207f3,0xa1e2694e,0xcdf4da65,0xd5be0506,0x1f6234d1,0x8afea6c4,
- 0x9d532e34,0xa055f3a2,0x32e18a05,0x75ebf6a4,0x39ec830b,0xaaef6040,
- 0x69f715e,0x51106ebd,0xf98a213e,0x3d06dd96,0xae053edd,0x46bde64d,
- 0xb58d5491,0x55dc471,0x6fd40604,0xff155060,0x24fb9819,0x97e9bdd6,
- 0xcc434089,0x779ed967,0xbd42e8b0,0x888b8907,0x385b19e7,0xdbeec879,
- 0x470a7ca1,0xe90f427c,0xc91e84f8,0x0,0x83868009,0x48ed2b32,
- 0xac70111e,0x4e725a6c,0xfbff0efd,0x5638850f,0x1ed5ae3d,0x27392d36,
- 0x64d90f0a,0x21a65c68,0xd1545b9b,0x3a2e3624,0xb1670a0c,0xfe75793,
- 0xd296eeb4,0x9e919b1b,0x4fc5c080,0xa220dc61,0x694b775a,0x161a121c,
- 0xaba93e2,0xe52aa0c0,0x43e0223c,0x1d171b12,0xb0d090e,0xadc78bf2,
- 0xb9a8b62d,0xc8a91e14,0x8519f157,0x4c0775af,0xbbdd99ee,0xfd607fa3,
- 0x9f2601f7,0xbcf5725c,0xc53b6644,0x347efb5b,0x7629438b,0xdcc623cb,
- 0x68fcedb6,0x63f1e4b8,0xcadc31d7,0x10856342,0x40229713,0x2011c684,
- 0x7d244a85,0xf83dbbd2,0x1132f9ae,0x6da129c7,0x4b2f9e1d,0xf330b2dc,
- 0xec52860d,0xd0e3c177,0x6c16b32b,0x99b970a9,0xfa489411,0x2264e947,
- 0xc48cfca8,0x1a3ff0a0,0xd82c7d56,0xef903322,0xc74e4987,0xc1d138d9,
- 0xfea2ca8c,0x360bd498,0xcf81f5a6,0x28de7aa5,0x268eb7da,0xa4bfad3f,
- 0xe49d3a2c,0xd927850,0x9bcc5f6a,0x62467e54,0xc2138df6,0xe8b8d890,
- 0x5ef7392e,0xf5afc382,0xbe805d9f,0x7c93d069,0xa92dd56f,0xb31225cf,
- 0x3b99acc8,0xa77d1810,0x6e639ce8,0x7bbb3bdb,0x97826cd,0xf418596e,
- 0x1b79aec,0xa89a4f83,0x656e95e6,0x7ee6ffaa,0x8cfbc21,0xe6e815ef,
- 0xd99be7ba,0xce366f4a,0xd4099fea,0xd67cb029,0xafb2a431,0x31233f2a,
- 0x3094a5c6,0xc066a235,0x37bc4e74,0xa6ca82fc,0xb0d090e0,0x15d8a733,
- 0x4a9804f1,0xf7daec41,0xe50cd7f,0x2ff69117,0x8dd64d76,0x4db0ef43,
- 0x544daacc,0xdf0496e4,0xe3b5d19e,0x1b886a4c,0xb81f2cc1,0x7f516546,
- 0x4ea5e9d,0x5d358c01,0x737487fa,0x2e410bfb,0x5a1d67b3,0x52d2db92,
- 0x335610e9,0x1347d66d,0x8c61d79a,0x7a0ca137,0x8e14f859,0x893c13eb,
- 0xee27a9ce,0x35c961b7,0xede51ce1,0x3cb1477a,0x59dfd29c,0x3f73f255,
- 0x79ce1418,0xbf37c773,0xeacdf753,0x5baafd5f,0x146f3ddf,0x86db4478,
- 0x81f3afca,0x3ec468b9,0x2c342438,0x5f40a3c2,0x72c31d16,0xc25e2bc,
- 0x8b493c28,0x41950dff,0x7101a839,0xdeb30c08,0x9ce4b4d8,0x90c15664,
- 0x6184cb7b,0x70b632d5,0x745c6c48,0x4257b8d0
-};
-
-#define MR_TOBYTE(x) ((uchar)((x)))
-
-static unsign32 pack(const uchar *b)
-{
- /* pack bytes into a 32-bit Word */
- return ((unsign32)b[3]<<24)|((unsign32)b[2]<<16)|((unsign32)b[1]<<8)|(unsign32)b[0];
-}
-
-static void unpack(unsign32 a,uchar *b)
-{
- /* unpack bytes from a word */
- b[0]=MR_TOBYTE(a);
- b[1]=MR_TOBYTE(a>>8);
- b[2]=MR_TOBYTE(a>>16);
- b[3]=MR_TOBYTE(a>>24);
-}
-
-/* SU= 8 */
-static uchar bmul(uchar x,uchar y)
-{
- /* x.y= AntiLog(Log(x) + Log(y)) */
- if (x && y) return ptab[(ltab[x]+ltab[y])%255];
- else return 0;
-}
-
-static unsign32 SubByte(unsign32 a)
-{
- uchar b[4];
- unpack(a,b);
- b[0]=fbsub[b[0]];
- b[1]=fbsub[b[1]];
- b[2]=fbsub[b[2]];
- b[3]=fbsub[b[3]];
- return pack(b);
-}
-
-/* SU= 16 */
-static uchar product(unsign32 x,unsign32 y)
-{
- /* dot product of two 4-byte arrays */
- uchar xb[4],yb[4];
- unpack(x,xb);
- unpack(y,yb);
- return bmul(xb[0],yb[0])^bmul(xb[1],yb[1])^bmul(xb[2],yb[2])^bmul(xb[3],yb[3]);
-}
-
-static unsign32 InvMixCol(unsign32 x)
-{
- /* matrix Multiplication */
- unsign32 y,m;
- uchar b[4];
-
- m=pack(InCo);
- b[3]=product(m,x);
- m=ROTL24(m);
- b[2]=product(m,x);
- m=ROTL24(m);
- b[1]=product(m,x);
- m=ROTL24(m);
- b[0]=product(m,x);
- y=pack(b);
- return y;
-}
-
-/* SU= 8 */
-/* reset cipher */
-void AES_reset(amcl_aes *a,int mode,char *iv)
-{
- /* reset mode, or reset iv */
- int i;
- a->mode=mode;
- for (i=0; i<4*NB; i++)
- a->f[i]=0;
- if (mode!=ECB && iv!=NULL)
- {
- for (i=0; i<4*NB; i++)
- a->f[i]=iv[i];
- }
-}
-
-void AES_getreg(amcl_aes *a,char *ir)
-{
- int i;
- for (i=0; i<4*NB; i++) ir[i]=a->f[i];
-}
-
-/* SU= 72 */
-/* Initialise cipher */
-int AES_init(amcl_aes* a,int mode,int nk,char *key,char *iv)
-{
- /* Key length Nk=16, 24 or 32 bytes */
- /* Key Scheduler. Create expanded encryption key */
- int i,j,k,N,nr;
- unsign32 CipherKey[8];
-
- nk/=4;
-
- if (nk!=4 && nk!=6 && nk!=8) return 0;
-
- nr=6+nk;
-
- a->Nk=nk;
- a->Nr=nr;
-
- AES_reset(a,mode,iv);
-
- N=NB*(nr+1);
-
- for (i=j=0; i<nk; i++,j+=4)
- {
- CipherKey[i]=pack((uchar *)&key[j]);
- }
- for (i=0; i<nk; i++) a->fkey[i]=CipherKey[i];
- for (j=nk,k=0; j<N; j+=nk,k++)
- {
- a->fkey[j]=a->fkey[j-nk]^SubByte(ROTL24(a->fkey[j-1]))^rco[k];
- if (nk<=6)
- {
- for (i=1; i<nk && (i+j)<N; i++)
- a->fkey[i+j]=a->fkey[i+j-nk]^a->fkey[i+j-1];
- }
- else
- {
- for (i=1; i<4 && (i+j)<N; i++)
- a->fkey[i+j]=a->fkey[i+j-nk]^a->fkey[i+j-1];
- if ((j+4)<N) a->fkey[j+4]=a->fkey[j+4-nk]^SubByte(a->fkey[j+3]);
- for (i=5; i<nk && (i+j)<N; i++)
- a->fkey[i+j]=a->fkey[i+j-nk]^a->fkey[i+j-1];
- }
-
- }
- /* now for the expanded decrypt key in reverse order */
-
- for (j=0; j<NB; j++) a->rkey[j+N-NB]=a->fkey[j];
- for (i=NB; i<N-NB; i+=NB)
- {
- k=N-NB-i;
- for (j=0; j<NB; j++) a->rkey[k+j]=InvMixCol(a->fkey[i+j]);
- }
- for (j=N-NB; j<N; j++) a->rkey[j-N+NB]=a->fkey[j];
- return 1;
-}
-
-/* SU= 80 */
-/* Encrypt a single block */
-void AES_ecb_encrypt(amcl_aes *a,uchar *buff)
-{
- int i,j,k;
- unsign32 p[4],q[4],*x,*y,*t;
-
- for (i=j=0; i<NB; i++,j+=4)
- {
- p[i]=pack((uchar *)&buff[j]);
- p[i]^=a->fkey[i];
- }
-
- k=NB;
- x=p;
- y=q;
-
- /* State alternates between x and y */
- for (i=1; i<a->Nr; i++)
- {
-
- y[0]=a->fkey[k]^ftable[MR_TOBYTE(x[0])]^
- ROTL8(ftable[MR_TOBYTE(x[1]>>8)])^
- ROTL16(ftable[MR_TOBYTE(x[2]>>16)])^
- ROTL24(ftable[x[3]>>24]);
- y[1]=a->fkey[k+1]^ftable[MR_TOBYTE(x[1])]^
- ROTL8(ftable[MR_TOBYTE(x[2]>>8)])^
- ROTL16(ftable[MR_TOBYTE(x[3]>>16)])^
- ROTL24(ftable[x[0]>>24]);
- y[2]=a->fkey[k+2]^ftable[MR_TOBYTE(x[2])]^
- ROTL8(ftable[MR_TOBYTE(x[3]>>8)])^
- ROTL16(ftable[MR_TOBYTE(x[0]>>16)])^
- ROTL24(ftable[x[1]>>24]);
- y[3]=a->fkey[k+3]^ftable[MR_TOBYTE(x[3])]^
- ROTL8(ftable[MR_TOBYTE(x[0]>>8)])^
- ROTL16(ftable[MR_TOBYTE(x[1]>>16)])^
- ROTL24(ftable[x[2]>>24]);
-
- k+=4;
- t=x;
- x=y;
- y=t; /* swap pointers */
- }
-
- /* Last Round */
-
- y[0]=a->fkey[k]^(unsign32)fbsub[MR_TOBYTE(x[0])]^
- ROTL8((unsign32)fbsub[MR_TOBYTE(x[1]>>8)])^
- ROTL16((unsign32)fbsub[MR_TOBYTE(x[2]>>16)])^
- ROTL24((unsign32)fbsub[x[3]>>24]);
- y[1]=a->fkey[k+1]^(unsign32)fbsub[MR_TOBYTE(x[1])]^
- ROTL8((unsign32)fbsub[MR_TOBYTE(x[2]>>8)])^
- ROTL16((unsign32)fbsub[MR_TOBYTE(x[3]>>16)])^
- ROTL24((unsign32)fbsub[x[0]>>24]);
- y[2]=a->fkey[k+2]^(unsign32)fbsub[MR_TOBYTE(x[2])]^
- ROTL8((unsign32)fbsub[MR_TOBYTE(x[3]>>8)])^
- ROTL16((unsign32)fbsub[MR_TOBYTE(x[0]>>16)])^
- ROTL24((unsign32)fbsub[x[1]>>24]);
- y[3]=a->fkey[k+3]^(unsign32)fbsub[MR_TOBYTE(x[3])]^
- ROTL8((unsign32)fbsub[MR_TOBYTE(x[0]>>8)])^
- ROTL16((unsign32)fbsub[MR_TOBYTE(x[1]>>16)])^
- ROTL24((unsign32)fbsub[x[2]>>24]);
-
- for (i=j=0; i<NB; i++,j+=4)
- {
- unpack(y[i],(uchar *)&buff[j]);
- x[i]=y[i]=0; /* clean up stack */
- }
-}
-
-/* SU= 80 */
-/* Decrypt a single block */
-void AES_ecb_decrypt(amcl_aes *a,uchar *buff)
-{
- int i,j,k;
- unsign32 p[4],q[4],*x,*y,*t;
-
- for (i=j=0; i<NB; i++,j+=4)
- {
- p[i]=pack((uchar *)&buff[j]);
- p[i]^=a->rkey[i];
- }
-
- k=NB;
- x=p;
- y=q;
-
- /* State alternates between x and y */
- for (i=1; i<a->Nr; i++)
- {
- /* Nr is number of rounds. May be odd. */
-
- y[0]=a->rkey[k]^rtable[MR_TOBYTE(x[0])]^
- ROTL8(rtable[MR_TOBYTE(x[3]>>8)])^
- ROTL16(rtable[MR_TOBYTE(x[2]>>16)])^
- ROTL24(rtable[x[1]>>24]);
- y[1]=a->rkey[k+1]^rtable[MR_TOBYTE(x[1])]^
- ROTL8(rtable[MR_TOBYTE(x[0]>>8)])^
- ROTL16(rtable[MR_TOBYTE(x[3]>>16)])^
- ROTL24(rtable[x[2]>>24]);
- y[2]=a->rkey[k+2]^rtable[MR_TOBYTE(x[2])]^
- ROTL8(rtable[MR_TOBYTE(x[1]>>8)])^
- ROTL16(rtable[MR_TOBYTE(x[0]>>16)])^
- ROTL24(rtable[x[3]>>24]);
- y[3]=a->rkey[k+3]^rtable[MR_TOBYTE(x[3])]^
- ROTL8(rtable[MR_TOBYTE(x[2]>>8)])^
- ROTL16(rtable[MR_TOBYTE(x[1]>>16)])^
- ROTL24(rtable[x[0]>>24]);
-
- k+=4;
- t=x;
- x=y;
- y=t; /* swap pointers */
- }
-
-
- /* Last Round */
- y[0]=a->rkey[k]^(unsign32)rbsub[MR_TOBYTE(x[0])]^
- ROTL8((unsign32)rbsub[MR_TOBYTE(x[3]>>8)])^
- ROTL16((unsign32)rbsub[MR_TOBYTE(x[2]>>16)])^
- ROTL24((unsign32)rbsub[x[1]>>24]);
- y[1]=a->rkey[k+1]^(unsign32)rbsub[MR_TOBYTE(x[1])]^
- ROTL8((unsign32)rbsub[MR_TOBYTE(x[0]>>8)])^
- ROTL16((unsign32)rbsub[MR_TOBYTE(x[3]>>16)])^
- ROTL24((unsign32)rbsub[x[2]>>24]);
- y[2]=a->rkey[k+2]^(unsign32)rbsub[MR_TOBYTE(x[2])]^
- ROTL8((unsign32)rbsub[MR_TOBYTE(x[1]>>8)])^
- ROTL16((unsign32)rbsub[MR_TOBYTE(x[0]>>16)])^
- ROTL24((unsign32)rbsub[x[3]>>24]);
- y[3]=a->rkey[k+3]^(unsign32)rbsub[MR_TOBYTE(x[3])]^
- ROTL8((unsign32)rbsub[MR_TOBYTE(x[2]>>8)])^
- ROTL16((unsign32)rbsub[MR_TOBYTE(x[1]>>16)])^
- ROTL24((unsign32)rbsub[x[0]>>24]);
-
- for (i=j=0; i<NB; i++,j+=4)
- {
- unpack(y[i],(uchar *)&buff[j]);
- x[i]=y[i]=0; /* clean up stack */
- }
-
-}
-
-/* simple default increment function */
-static void increment(char *f)
-{
- int i;
- for (i=0; i<16; i++)
- {
- f[i]++;
- if (f[i]!=0) break;
- }
-}
-
-/* SU= 40 */
-/* Encrypt using selected mode of operation */
-unsign32 AES_encrypt(amcl_aes* a,char *buff)
-{
- int j,bytes;
- char st[16];
- unsign32 fell_off;
-
- /* Supported Modes of Operation */
-
- fell_off=0;
- switch (a->mode)
- {
- case ECB:
- AES_ecb_encrypt(a,(uchar *)buff);
- return 0;
- case CBC:
- for (j=0; j<4*NB; j++) buff[j]^=a->f[j];
- AES_ecb_encrypt(a,(uchar *)buff);
- for (j=0; j<4*NB; j++) a->f[j]=buff[j];
- return 0;
-
- case CFB1:
- case CFB2:
- case CFB4:
- bytes=a->mode-CFB1+1;
- for (j=0; j<bytes; j++) fell_off=(fell_off<<8)|a->f[j];
- for (j=0; j<4*NB; j++) st[j]=a->f[j];
- for (j=bytes; j<4*NB; j++) a->f[j-bytes]=a->f[j];
- AES_ecb_encrypt(a,(uchar *)st);
- for (j=0; j<bytes; j++)
- {
- buff[j]^=st[j];
- a->f[16-bytes+j]=buff[j];
- }
- return fell_off;
-
- case OFB1:
- case OFB2:
- case OFB4:
- case OFB8:
- case OFB16:
-
- bytes=a->mode-OFB1+1;
- AES_ecb_encrypt(a,(uchar *)(a->f));
- for (j=0; j<bytes; j++) buff[j]^=a->f[j];
- return 0;
-
- case CTR1:
- case CTR2:
- case CTR4:
- case CTR8:
- case CTR16:
-
- bytes=a->mode-CTR1+1;
- for (j=0; j<4*NB; j++) st[j]=a->f[j];
- AES_ecb_encrypt(a,(uchar *)st);
- for (j=0; j<bytes; j++) buff[j]^=st[j];
- increment(a->f);
-
- default:
- return 0;
- }
-}
-
-/* SU= 40 */
-/* Decrypt using selected mode of operation */
-unsign32 AES_decrypt(amcl_aes *a,char *buff)
-{
- int j,bytes;
- char st[16];
- unsign32 fell_off;
-
- /* Supported modes of operation */
- fell_off=0;
- switch (a->mode)
- {
- case ECB:
- AES_ecb_decrypt(a,(uchar *)buff);
- return 0;
- case CBC:
- for (j=0; j<4*NB; j++)
- {
- st[j]=a->f[j];
- a->f[j]=buff[j];
- }
- AES_ecb_decrypt(a,(uchar *)buff);
- for (j=0; j<4*NB; j++)
- {
- buff[j]^=st[j];
- st[j]=0;
- }
- return 0;
- case CFB1:
- case CFB2:
- case CFB4:
- bytes=a->mode-CFB1+1;
- for (j=0; j<bytes; j++) fell_off=(fell_off<<8)|a->f[j];
- for (j=0; j<4*NB; j++) st[j]=a->f[j];
- for (j=bytes; j<4*NB; j++) a->f[j-bytes]=a->f[j];
- AES_ecb_encrypt(a,(uchar *)st);
- for (j=0; j<bytes; j++)
- {
- a->f[16-bytes+j]=buff[j];
- buff[j]^=st[j];
- }
- return fell_off;
- case OFB1:
- case OFB2:
- case OFB4:
- case OFB8:
- case OFB16:
- bytes=a->mode-OFB1+1;
- AES_ecb_encrypt(a,(uchar *)(a->f));
- for (j=0; j<bytes; j++) buff[j]^=a->f[j];
- return 0;
-
- case CTR1:
- case CTR2:
- case CTR4:
- case CTR8:
- case CTR16:
-
- bytes=a->mode-CTR1+1;
- for (j=0; j<4*NB; j++) st[j]=a->f[j];
- AES_ecb_encrypt(a,(uchar *)st);
- for (j=0; j<bytes; j++) buff[j]^=st[j];
- increment(a->f);
-
- default:
- return 0;
- }
-}
-
-/* Clean up and delete left-overs */
-void AES_end(amcl_aes *a)
-{
- /* clean up */
- int i;
- for (i=0; i<NB*(a->Nr+1); i++)
- a->fkey[i]=a->rkey[i]=0;
- for (i=0; i<4*NB; i++)
- a->f[i]=0;
-}
-
-
-/*
-#include <stdio.h>
-
-#define KK 32
-
-int main()
-{
- int i;
- amcl_aes a;
- unsign32 t;
- uchar x,y;
-
- char key[KK];
- char block[16];
- char iv[16];
- for (i=0;i<KK;i++) key[i]=5;
- key[0]=1;
- for (i=0;i<16;i++) iv[i]=i;
- for (i=0;i<16;i++) block[i]=i;
-
- AES_init(&a,CTR16,KK,key,iv);
-
- printf("Plain= ");
- for (i=0;i<16;i++) printf("%02x",block[i]);
- printf("\n");
- AES_encrypt(&a,block);
- printf("Encrypt= ");
- for (i=0;i<16;i++) printf("%02x",(uchar)block[i]);
- printf("\n");
- AES_reset(&a,CTR16,iv);
- AES_decrypt(&a,block);
- printf("Decrypt= ");
- for (i=0;i<16;i++) printf("%02x",(uchar)block[i]);
- printf("\n");
-
- AES_end(&a);
-
- return 0;
-}
-
-*/
-