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Diffstat (limited to 'main/openssl/crypto/mdc2/mdc2dgst.c')
| -rw-r--r-- | main/openssl/crypto/mdc2/mdc2dgst.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/main/openssl/crypto/mdc2/mdc2dgst.c b/main/openssl/crypto/mdc2/mdc2dgst.c new file mode 100644 index 00000000..4aa406ed --- /dev/null +++ b/main/openssl/crypto/mdc2/mdc2dgst.c @@ -0,0 +1,199 @@ +/* crypto/mdc2/mdc2dgst.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * 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@cryptsoft.com). + * + * 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@cryptsoft.com)" + * 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@cryptsoft.com)" + * + * 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <openssl/des.h> +#include <openssl/mdc2.h> + +#undef c2l +#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ + l|=((DES_LONG)(*((c)++)))<< 8L, \ + l|=((DES_LONG)(*((c)++)))<<16L, \ + l|=((DES_LONG)(*((c)++)))<<24L) + +#undef l2c +#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ + *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ + *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ + *((c)++)=(unsigned char)(((l)>>24L)&0xff)) + +static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len); +int MDC2_Init(MDC2_CTX *c) + { + c->num=0; + c->pad_type=1; + memset(&(c->h[0]),0x52,MDC2_BLOCK); + memset(&(c->hh[0]),0x25,MDC2_BLOCK); + return 1; + } + +int MDC2_Update(MDC2_CTX *c, const unsigned char *in, size_t len) + { + size_t i,j; + + i=c->num; + if (i != 0) + { + if (i+len < MDC2_BLOCK) + { + /* partial block */ + memcpy(&(c->data[i]),in,len); + c->num+=(int)len; + return 1; + } + else + { + /* filled one */ + j=MDC2_BLOCK-i; + memcpy(&(c->data[i]),in,j); + len-=j; + in+=j; + c->num=0; + mdc2_body(c,&(c->data[0]),MDC2_BLOCK); + } + } + i=len&~((size_t)MDC2_BLOCK-1); + if (i > 0) mdc2_body(c,in,i); + j=len-i; + if (j > 0) + { + memcpy(&(c->data[0]),&(in[i]),j); + c->num=(int)j; + } + return 1; + } + +static void mdc2_body(MDC2_CTX *c, const unsigned char *in, size_t len) + { + register DES_LONG tin0,tin1; + register DES_LONG ttin0,ttin1; + DES_LONG d[2],dd[2]; + DES_key_schedule k; + unsigned char *p; + size_t i; + + for (i=0; i<len; i+=8) + { + c2l(in,tin0); d[0]=dd[0]=tin0; + c2l(in,tin1); d[1]=dd[1]=tin1; + c->h[0]=(c->h[0]&0x9f)|0x40; + c->hh[0]=(c->hh[0]&0x9f)|0x20; + + DES_set_odd_parity(&c->h); + DES_set_key_unchecked(&c->h,&k); + DES_encrypt1(d,&k,1); + + DES_set_odd_parity(&c->hh); + DES_set_key_unchecked(&c->hh,&k); + DES_encrypt1(dd,&k,1); + + ttin0=tin0^dd[0]; + ttin1=tin1^dd[1]; + tin0^=d[0]; + tin1^=d[1]; + + p=c->h; + l2c(tin0,p); + l2c(ttin1,p); + p=c->hh; + l2c(ttin0,p); + l2c(tin1,p); + } + } + +int MDC2_Final(unsigned char *md, MDC2_CTX *c) + { + unsigned int i; + int j; + + i=c->num; + j=c->pad_type; + if ((i > 0) || (j == 2)) + { + if (j == 2) + c->data[i++]=0x80; + memset(&(c->data[i]),0,MDC2_BLOCK-i); + mdc2_body(c,c->data,MDC2_BLOCK); + } + memcpy(md,(char *)c->h,MDC2_BLOCK); + memcpy(&(md[MDC2_BLOCK]),(char *)c->hh,MDC2_BLOCK); + return 1; + } + +#undef TEST + +#ifdef TEST +main() + { + unsigned char md[MDC2_DIGEST_LENGTH]; + int i; + MDC2_CTX c; + static char *text="Now is the time for all "; + + MDC2_Init(&c); + MDC2_Update(&c,text,strlen(text)); + MDC2_Final(&(md[0]),&c); + + for (i=0; i<MDC2_DIGEST_LENGTH; i++) + printf("%02X",md[i]); + printf("\n"); + } + +#endif |