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Diffstat (limited to 'lib/libdes/xcbc_enc.c')
| -rw-r--r-- | lib/libdes/xcbc_enc.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/lib/libdes/xcbc_enc.c b/lib/libdes/xcbc_enc.c new file mode 100644 index 00000000000..6a8626171df --- /dev/null +++ b/lib/libdes/xcbc_enc.c @@ -0,0 +1,206 @@ +/* crypto/des/xcbc_enc.c */ +/* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@mincom.oz.au). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@mincom.oz.au). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@mincom.oz.au)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@mincom.oz.au)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include "des_locl.h" + +/* RSA's DESX */ + +static unsigned char desx_white_in2out[256]={ +0xBD,0x56,0xEA,0xF2,0xA2,0xF1,0xAC,0x2A,0xB0,0x93,0xD1,0x9C,0x1B,0x33,0xFD,0xD0, +0x30,0x04,0xB6,0xDC,0x7D,0xDF,0x32,0x4B,0xF7,0xCB,0x45,0x9B,0x31,0xBB,0x21,0x5A, +0x41,0x9F,0xE1,0xD9,0x4A,0x4D,0x9E,0xDA,0xA0,0x68,0x2C,0xC3,0x27,0x5F,0x80,0x36, +0x3E,0xEE,0xFB,0x95,0x1A,0xFE,0xCE,0xA8,0x34,0xA9,0x13,0xF0,0xA6,0x3F,0xD8,0x0C, +0x78,0x24,0xAF,0x23,0x52,0xC1,0x67,0x17,0xF5,0x66,0x90,0xE7,0xE8,0x07,0xB8,0x60, +0x48,0xE6,0x1E,0x53,0xF3,0x92,0xA4,0x72,0x8C,0x08,0x15,0x6E,0x86,0x00,0x84,0xFA, +0xF4,0x7F,0x8A,0x42,0x19,0xF6,0xDB,0xCD,0x14,0x8D,0x50,0x12,0xBA,0x3C,0x06,0x4E, +0xEC,0xB3,0x35,0x11,0xA1,0x88,0x8E,0x2B,0x94,0x99,0xB7,0x71,0x74,0xD3,0xE4,0xBF, +0x3A,0xDE,0x96,0x0E,0xBC,0x0A,0xED,0x77,0xFC,0x37,0x6B,0x03,0x79,0x89,0x62,0xC6, +0xD7,0xC0,0xD2,0x7C,0x6A,0x8B,0x22,0xA3,0x5B,0x05,0x5D,0x02,0x75,0xD5,0x61,0xE3, +0x18,0x8F,0x55,0x51,0xAD,0x1F,0x0B,0x5E,0x85,0xE5,0xC2,0x57,0x63,0xCA,0x3D,0x6C, +0xB4,0xC5,0xCC,0x70,0xB2,0x91,0x59,0x0D,0x47,0x20,0xC8,0x4F,0x58,0xE0,0x01,0xE2, +0x16,0x38,0xC4,0x6F,0x3B,0x0F,0x65,0x46,0xBE,0x7E,0x2D,0x7B,0x82,0xF9,0x40,0xB5, +0x1D,0x73,0xF8,0xEB,0x26,0xC7,0x87,0x97,0x25,0x54,0xB1,0x28,0xAA,0x98,0x9D,0xA5, +0x64,0x6D,0x7A,0xD4,0x10,0x81,0x44,0xEF,0x49,0xD6,0xAE,0x2E,0xDD,0x76,0x5C,0x2F, +0xA7,0x1C,0xC9,0x09,0x69,0x9A,0x83,0xCF,0x29,0x39,0xB9,0xE9,0x4C,0xFF,0x43,0xAB, + }; + +void des_xwhite_in2out(des_key,in_white,out_white) +des_cblock (*des_key); +des_cblock (*in_white); +des_cblock (*out_white); + { + unsigned char *key,*in,*out; + int out0,out1; + int i; + + key=(unsigned char *)des_key; + in=(unsigned char *)in_white; + out=(unsigned char *)out_white; + + out[0]=out[1]=out[2]=out[3]=out[4]=out[5]=out[6]=out[7]=0; + out0=out1=0; + for (i=0; i<8; i++) + { + out[i]=key[i]^desx_white_in2out[out0^out1]; + out0=out1; + out1=(int)out[i&0x07]; + } + + out0=out[0]; + out1=out[i]; + for (i=0; i<8; i++) + { + out[i]=in[i]^desx_white_in2out[out0^out1]; + out0=out1; + out1=(int)out[i&0x07]; + } + } + +void des_xcbc_encrypt(input, output, length, schedule, ivec, inw,outw,encrypt) +des_cblock (*input); +des_cblock (*output); +long length; +des_key_schedule schedule; +des_cblock (*ivec); +des_cblock (*inw); +des_cblock (*outw); +int encrypt; + { + register DES_LONG tin0,tin1; + register DES_LONG tout0,tout1,xor0,xor1; + register DES_LONG inW0,inW1,outW0,outW1; + register unsigned char *in,*out; + register long l=length; + DES_LONG tin[2]; + unsigned char *iv; + + in=(unsigned char *)inw; + c2l(in,inW0); + c2l(in,inW1); + in=(unsigned char *)outw; + c2l(in,outW0); + c2l(in,outW1); + + in=(unsigned char *)input; + out=(unsigned char *)output; + iv=(unsigned char *)ivec; + + if (encrypt) + { + c2l(iv,tout0); + c2l(iv,tout1); + for (l-=8; l>=0; l-=8) + { + c2l(in,tin0); + c2l(in,tin1); + tin0^=tout0^inW0; tin[0]=tin0; + tin1^=tout1^inW1; tin[1]=tin1; + des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); + tout0=tin[0]^outW0; l2c(tout0,out); + tout1=tin[1]^outW1; l2c(tout1,out); + } + if (l != -8) + { + c2ln(in,tin0,tin1,l+8); + tin0^=tout0^inW0; tin[0]=tin0; + tin1^=tout1^inW1; tin[1]=tin1; + des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); + tout0=tin[0]^outW0; l2c(tout0,out); + tout1=tin[1]^outW1; l2c(tout1,out); + } + iv=(unsigned char *)ivec; + l2c(tout0,iv); + l2c(tout1,iv); + } + else + { + c2l(iv,xor0); + c2l(iv,xor1); + for (l-=8; l>0; l-=8) + { + c2l(in,tin0); tin[0]=tin0^outW0; + c2l(in,tin1); tin[1]=tin1^outW1; + des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); + tout0=tin[0]^xor0^inW0; + tout1=tin[1]^xor1^inW1; + l2c(tout0,out); + l2c(tout1,out); + xor0=tin0; + xor1=tin1; + } + if (l != -8) + { + c2l(in,tin0); tin[0]=tin0^outW0; + c2l(in,tin1); tin[1]=tin1^outW1; + des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); + tout0=tin[0]^xor0^inW0; + tout1=tin[1]^xor1^inW1; + l2cn(tout0,tout1,out,l+8); + xor0=tin0; + xor1=tin1; + } + + iv=(unsigned char *)ivec; + l2c(xor0,iv); + l2c(xor1,iv); + } + tin0=tin1=tout0=tout1=xor0=xor1=0; + inW0=inW1=outW0=outW1=0; + tin[0]=tin[1]=0; + } + |