334 lines
9.1 KiB
C
334 lines
9.1 KiB
C
/* apps/rsa.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#ifndef NO_RSA
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "apps.h"
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/rsa.h>
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#include <openssl/evp.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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#undef PROG
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#define PROG rsa_main
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/* -inform arg - input format - default PEM (one of DER, NET or PEM)
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* -outform arg - output format - default PEM
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* -in arg - input file - default stdin
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* -out arg - output file - default stdout
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* -des - encrypt output if PEM format with DES in cbc mode
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* -des3 - encrypt output if PEM format
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* -idea - encrypt output if PEM format
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* -text - print a text version
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* -modulus - print the RSA key modulus
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* -check - verify key consistency
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*/
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int MAIN(int argc, char **argv)
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{
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int ret=1;
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RSA *rsa=NULL;
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int i,badops=0;
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const EVP_CIPHER *enc=NULL;
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BIO *in=NULL,*out=NULL;
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int informat,outformat,text=0,check=0,noout=0;
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char *infile,*outfile,*prog;
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int modulus=0;
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apps_startup();
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if (bio_err == NULL)
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if ((bio_err=BIO_new(BIO_s_file())) != NULL)
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BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
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infile=NULL;
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outfile=NULL;
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informat=FORMAT_PEM;
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outformat=FORMAT_PEM;
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prog=argv[0];
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argc--;
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argv++;
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while (argc >= 1)
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{
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if (strcmp(*argv,"-inform") == 0)
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{
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if (--argc < 1) goto bad;
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informat=str2fmt(*(++argv));
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}
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else if (strcmp(*argv,"-outform") == 0)
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{
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if (--argc < 1) goto bad;
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outformat=str2fmt(*(++argv));
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}
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else if (strcmp(*argv,"-in") == 0)
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{
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if (--argc < 1) goto bad;
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infile= *(++argv);
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}
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else if (strcmp(*argv,"-out") == 0)
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{
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if (--argc < 1) goto bad;
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outfile= *(++argv);
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}
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else if (strcmp(*argv,"-noout") == 0)
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noout=1;
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else if (strcmp(*argv,"-text") == 0)
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text=1;
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else if (strcmp(*argv,"-modulus") == 0)
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modulus=1;
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else if (strcmp(*argv,"-check") == 0)
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check=1;
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else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
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{
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BIO_printf(bio_err,"unknown option %s\n",*argv);
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badops=1;
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break;
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}
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argc--;
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argv++;
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}
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if (badops)
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{
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bad:
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BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
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BIO_printf(bio_err,"where options are\n");
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BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n");
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BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n");
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BIO_printf(bio_err," -in arg input file\n");
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BIO_printf(bio_err," -out arg output file\n");
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BIO_printf(bio_err," -des encrypt PEM output with cbc des\n");
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BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
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#ifndef NO_IDEA
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BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n");
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#endif
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BIO_printf(bio_err," -text print the key in text\n");
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BIO_printf(bio_err," -noout don't print key out\n");
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BIO_printf(bio_err," -modulus print the RSA key modulus\n");
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BIO_printf(bio_err," -check verify key consistency\n");
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goto end;
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}
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ERR_load_crypto_strings();
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in=BIO_new(BIO_s_file());
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out=BIO_new(BIO_s_file());
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if ((in == NULL) || (out == NULL))
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{
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ERR_print_errors(bio_err);
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goto end;
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}
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if (infile == NULL)
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BIO_set_fp(in,stdin,BIO_NOCLOSE);
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else
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{
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if (BIO_read_filename(in,infile) <= 0)
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{
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perror(infile);
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goto end;
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}
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}
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BIO_printf(bio_err,"read RSA private key\n");
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if (informat == FORMAT_ASN1)
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rsa=d2i_RSAPrivateKey_bio(in,NULL);
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#ifndef NO_RC4
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else if (informat == FORMAT_NETSCAPE)
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{
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BUF_MEM *buf=NULL;
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unsigned char *p;
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int size=0;
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buf=BUF_MEM_new();
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for (;;)
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{
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if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))
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goto end;
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i=BIO_read(in,&(buf->data[size]),1024*10);
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size+=i;
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if (i == 0) break;
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if (i < 0)
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{
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perror("reading private key");
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BUF_MEM_free(buf);
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goto end;
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}
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}
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p=(unsigned char *)buf->data;
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rsa=(RSA *)d2i_Netscape_RSA(NULL,&p,(long)size,NULL);
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BUF_MEM_free(buf);
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}
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#endif
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else if (informat == FORMAT_PEM)
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rsa=PEM_read_bio_RSAPrivateKey(in,NULL,NULL,NULL);
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else
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{
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BIO_printf(bio_err,"bad input format specified for key\n");
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goto end;
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}
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if (rsa == NULL)
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{
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BIO_printf(bio_err,"unable to load Private Key\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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if (outfile == NULL)
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BIO_set_fp(out,stdout,BIO_NOCLOSE);
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else
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{
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if (BIO_write_filename(out,outfile) <= 0)
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{
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perror(outfile);
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goto end;
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}
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}
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if (text)
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if (!RSA_print(out,rsa,0))
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{
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perror(outfile);
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ERR_print_errors(bio_err);
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goto end;
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}
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if (modulus)
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{
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fprintf(stdout,"Modulus=");
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BN_print(out,rsa->n);
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fprintf(stdout,"\n");
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}
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if (check)
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{
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int r = RSA_check_key(rsa);
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if (r == 1)
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BIO_printf(out,"RSA key ok\n");
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else if (r == 0)
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{
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long e;
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while ((e = ERR_peek_error()) != 0 &&
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ERR_GET_LIB(e) == ERR_LIB_RSA &&
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ERR_GET_FUNC(e) == RSA_F_RSA_CHECK_KEY &&
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ERR_GET_REASON(e) != ERR_R_MALLOC_FAILURE)
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{
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BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(e));
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ERR_get_error(); /* remove e from error stack */
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}
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}
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if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */
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{
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ERR_print_errors(bio_err);
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goto end;
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}
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}
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if (noout) goto end;
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BIO_printf(bio_err,"writing RSA private key\n");
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if (outformat == FORMAT_ASN1)
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i=i2d_RSAPrivateKey_bio(out,rsa);
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#ifndef NO_RC4
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else if (outformat == FORMAT_NETSCAPE)
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{
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unsigned char *p,*pp;
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int size;
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i=1;
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size=i2d_Netscape_RSA(rsa,NULL,NULL);
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if ((p=(unsigned char *)Malloc(size)) == NULL)
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{
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BIO_printf(bio_err,"Malloc failure\n");
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goto end;
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}
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pp=p;
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i2d_Netscape_RSA(rsa,&p,NULL);
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BIO_write(out,(char *)pp,size);
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Free(pp);
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}
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#endif
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else if (outformat == FORMAT_PEM)
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i=PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,NULL,NULL);
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else {
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BIO_printf(bio_err,"bad output format specified for outfile\n");
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goto end;
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}
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if (!i)
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{
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BIO_printf(bio_err,"unable to write private key\n");
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ERR_print_errors(bio_err);
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}
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else
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ret=0;
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end:
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if (in != NULL) BIO_free(in);
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if (out != NULL) BIO_free(out);
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if (rsa != NULL) RSA_free(rsa);
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EXIT(ret);
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}
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#endif
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