sha1.c
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上传日期:2020-08-09
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- /* crypto/sha/sha1.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 <openssl/sha.h>
- #define BUFSIZE 1024*16
- void do_fp(FILE *f);
- void pt(unsigned char *md);
- #ifndef _OSD_POSIX
- int read(int, void *, unsigned int);
- #endif
- int main(int argc, char **argv)
- {
- int i,err=0;
- FILE *IN;
- if (argc == 1)
- {
- do_fp(stdin);
- }
- else
- {
- for (i=1; i<argc; i++)
- {
- IN=fopen(argv[i],"r");
- if (IN == NULL)
- {
- perror(argv[i]);
- err++;
- continue;
- }
- printf("SHA1(%s)= ",argv[i]);
- do_fp(IN);
- fclose(IN);
- }
- }
- exit(err);
- }
- void do_fp(FILE *f)
- {
- SHA_CTX c;
- unsigned char md[SHA_DIGEST_LENGTH];
- int fd;
- int i;
- unsigned char buf[BUFSIZE];
- fd=fileno(f);
- SHA1_Init(&c);
- for (;;)
- {
- i=read(fd,buf,BUFSIZE);
- if (i <= 0) break;
- SHA1_Update(&c,buf,(unsigned long)i);
- }
- SHA1_Final(&(md[0]),&c);
- pt(md);
- }
- void pt(unsigned char *md)
- {
- int i;
- for (i=0; i<SHA_DIGEST_LENGTH; i++)
- printf("%02x",md[i]);
- printf("n");
- }