rsa.c revision 59191
155714Skris/* apps/rsa.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#ifndef NO_RSA 6055714Skris#include <stdio.h> 6155714Skris#include <stdlib.h> 6255714Skris#include <string.h> 6355714Skris#include <time.h> 6455714Skris#include "apps.h" 6555714Skris#include <openssl/bio.h> 6655714Skris#include <openssl/err.h> 6755714Skris#include <openssl/rsa.h> 6855714Skris#include <openssl/evp.h> 6955714Skris#include <openssl/x509.h> 7055714Skris#include <openssl/pem.h> 7155714Skris 7255714Skris#undef PROG 7355714Skris#define PROG rsa_main 7455714Skris 7555714Skris/* -inform arg - input format - default PEM (one of DER, NET or PEM) 7655714Skris * -outform arg - output format - default PEM 7755714Skris * -in arg - input file - default stdin 7855714Skris * -out arg - output file - default stdout 7955714Skris * -des - encrypt output if PEM format with DES in cbc mode 8055714Skris * -des3 - encrypt output if PEM format 8155714Skris * -idea - encrypt output if PEM format 8255714Skris * -text - print a text version 8355714Skris * -modulus - print the RSA key modulus 8455714Skris * -check - verify key consistency 8559191Skris * -pubin - Expect a public key in input file. 8659191Skris * -pubout - Output a public key. 8755714Skris */ 8855714Skris 8959191Skrisint MAIN(int, char **); 9059191Skris 9155714Skrisint MAIN(int argc, char **argv) 9255714Skris { 9355714Skris int ret=1; 9455714Skris RSA *rsa=NULL; 9555714Skris int i,badops=0; 9655714Skris const EVP_CIPHER *enc=NULL; 9755714Skris BIO *in=NULL,*out=NULL; 9855714Skris int informat,outformat,text=0,check=0,noout=0; 9959191Skris int pubin = 0, pubout = 0; 10055714Skris char *infile,*outfile,*prog; 10159191Skris char *passargin = NULL, *passargout = NULL; 10259191Skris char *passin = NULL, *passout = NULL; 10355714Skris int modulus=0; 10455714Skris 10555714Skris apps_startup(); 10655714Skris 10755714Skris if (bio_err == NULL) 10855714Skris if ((bio_err=BIO_new(BIO_s_file())) != NULL) 10955714Skris BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 11055714Skris 11155714Skris infile=NULL; 11255714Skris outfile=NULL; 11355714Skris informat=FORMAT_PEM; 11455714Skris outformat=FORMAT_PEM; 11555714Skris 11655714Skris prog=argv[0]; 11755714Skris argc--; 11855714Skris argv++; 11955714Skris while (argc >= 1) 12055714Skris { 12155714Skris if (strcmp(*argv,"-inform") == 0) 12255714Skris { 12355714Skris if (--argc < 1) goto bad; 12455714Skris informat=str2fmt(*(++argv)); 12555714Skris } 12655714Skris else if (strcmp(*argv,"-outform") == 0) 12755714Skris { 12855714Skris if (--argc < 1) goto bad; 12955714Skris outformat=str2fmt(*(++argv)); 13055714Skris } 13155714Skris else if (strcmp(*argv,"-in") == 0) 13255714Skris { 13355714Skris if (--argc < 1) goto bad; 13455714Skris infile= *(++argv); 13555714Skris } 13655714Skris else if (strcmp(*argv,"-out") == 0) 13755714Skris { 13855714Skris if (--argc < 1) goto bad; 13955714Skris outfile= *(++argv); 14055714Skris } 14159191Skris else if (strcmp(*argv,"-passin") == 0) 14259191Skris { 14359191Skris if (--argc < 1) goto bad; 14459191Skris passargin= *(++argv); 14559191Skris } 14659191Skris else if (strcmp(*argv,"-passout") == 0) 14759191Skris { 14859191Skris if (--argc < 1) goto bad; 14959191Skris passargout= *(++argv); 15059191Skris } 15159191Skris else if (strcmp(*argv,"-pubin") == 0) 15259191Skris pubin=1; 15359191Skris else if (strcmp(*argv,"-pubout") == 0) 15459191Skris pubout=1; 15555714Skris else if (strcmp(*argv,"-noout") == 0) 15655714Skris noout=1; 15755714Skris else if (strcmp(*argv,"-text") == 0) 15855714Skris text=1; 15955714Skris else if (strcmp(*argv,"-modulus") == 0) 16055714Skris modulus=1; 16155714Skris else if (strcmp(*argv,"-check") == 0) 16255714Skris check=1; 16355714Skris else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 16455714Skris { 16555714Skris BIO_printf(bio_err,"unknown option %s\n",*argv); 16655714Skris badops=1; 16755714Skris break; 16855714Skris } 16955714Skris argc--; 17055714Skris argv++; 17155714Skris } 17255714Skris 17355714Skris if (badops) 17455714Skris { 17555714Skrisbad: 17655714Skris BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 17755714Skris BIO_printf(bio_err,"where options are\n"); 17859191Skris BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n"); 17959191Skris BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n"); 18059191Skris BIO_printf(bio_err," -in arg input file\n"); 18159191Skris BIO_printf(bio_err," -passin arg input file pass phrase source\n"); 18259191Skris BIO_printf(bio_err," -out arg output file\n"); 18359191Skris BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 18459191Skris BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 18559191Skris BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 18655714Skris#ifndef NO_IDEA 18759191Skris BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 18855714Skris#endif 18959191Skris BIO_printf(bio_err," -text print the key in text\n"); 19059191Skris BIO_printf(bio_err," -noout don't print key out\n"); 19159191Skris BIO_printf(bio_err," -modulus print the RSA key modulus\n"); 19259191Skris BIO_printf(bio_err," -check verify key consistency\n"); 19359191Skris BIO_printf(bio_err," -pubin expect a public key in input file\n"); 19459191Skris BIO_printf(bio_err," -pubout output a public key\n"); 19555714Skris goto end; 19655714Skris } 19755714Skris 19855714Skris ERR_load_crypto_strings(); 19955714Skris 20059191Skris if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 20159191Skris BIO_printf(bio_err, "Error getting passwords\n"); 20259191Skris goto end; 20359191Skris } 20459191Skris 20559191Skris if(check && pubin) { 20659191Skris BIO_printf(bio_err, "Only private keys can be checked\n"); 20759191Skris goto end; 20859191Skris } 20959191Skris 21055714Skris in=BIO_new(BIO_s_file()); 21155714Skris out=BIO_new(BIO_s_file()); 21255714Skris if ((in == NULL) || (out == NULL)) 21355714Skris { 21455714Skris ERR_print_errors(bio_err); 21555714Skris goto end; 21655714Skris } 21755714Skris 21855714Skris if (infile == NULL) 21955714Skris BIO_set_fp(in,stdin,BIO_NOCLOSE); 22055714Skris else 22155714Skris { 22255714Skris if (BIO_read_filename(in,infile) <= 0) 22355714Skris { 22455714Skris perror(infile); 22555714Skris goto end; 22655714Skris } 22755714Skris } 22855714Skris 22959191Skris BIO_printf(bio_err,"read RSA key\n"); 23059191Skris if (informat == FORMAT_ASN1) { 23159191Skris if (pubin) rsa=d2i_RSA_PUBKEY_bio(in,NULL); 23259191Skris else rsa=d2i_RSAPrivateKey_bio(in,NULL); 23359191Skris } 23455714Skris#ifndef NO_RC4 23555714Skris else if (informat == FORMAT_NETSCAPE) 23655714Skris { 23755714Skris BUF_MEM *buf=NULL; 23855714Skris unsigned char *p; 23955714Skris int size=0; 24055714Skris 24155714Skris buf=BUF_MEM_new(); 24255714Skris for (;;) 24355714Skris { 24455714Skris if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10))) 24555714Skris goto end; 24655714Skris i=BIO_read(in,&(buf->data[size]),1024*10); 24755714Skris size+=i; 24855714Skris if (i == 0) break; 24955714Skris if (i < 0) 25055714Skris { 25155714Skris perror("reading private key"); 25255714Skris BUF_MEM_free(buf); 25355714Skris goto end; 25455714Skris } 25555714Skris } 25655714Skris p=(unsigned char *)buf->data; 25759191Skris rsa=d2i_Netscape_RSA(NULL,&p,(long)size,NULL); 25855714Skris BUF_MEM_free(buf); 25955714Skris } 26055714Skris#endif 26159191Skris else if (informat == FORMAT_PEM) { 26259191Skris if(pubin) rsa=PEM_read_bio_RSA_PUBKEY(in,NULL,NULL,NULL); 26359191Skris else rsa=PEM_read_bio_RSAPrivateKey(in,NULL, NULL,passin); 26459191Skris } 26555714Skris else 26655714Skris { 26755714Skris BIO_printf(bio_err,"bad input format specified for key\n"); 26855714Skris goto end; 26955714Skris } 27055714Skris if (rsa == NULL) 27155714Skris { 27259191Skris BIO_printf(bio_err,"unable to load key\n"); 27355714Skris ERR_print_errors(bio_err); 27455714Skris goto end; 27555714Skris } 27655714Skris 27755714Skris if (outfile == NULL) 27855714Skris BIO_set_fp(out,stdout,BIO_NOCLOSE); 27955714Skris else 28055714Skris { 28155714Skris if (BIO_write_filename(out,outfile) <= 0) 28255714Skris { 28355714Skris perror(outfile); 28455714Skris goto end; 28555714Skris } 28655714Skris } 28755714Skris 28855714Skris if (text) 28955714Skris if (!RSA_print(out,rsa,0)) 29055714Skris { 29155714Skris perror(outfile); 29255714Skris ERR_print_errors(bio_err); 29355714Skris goto end; 29455714Skris } 29555714Skris 29655714Skris if (modulus) 29755714Skris { 29859191Skris BIO_printf(out,"Modulus="); 29955714Skris BN_print(out,rsa->n); 30059191Skris BIO_printf(out,"\n"); 30155714Skris } 30255714Skris 30355714Skris if (check) 30455714Skris { 30555714Skris int r = RSA_check_key(rsa); 30655714Skris 30755714Skris if (r == 1) 30855714Skris BIO_printf(out,"RSA key ok\n"); 30955714Skris else if (r == 0) 31055714Skris { 31155714Skris long e; 31255714Skris 31355714Skris while ((e = ERR_peek_error()) != 0 && 31455714Skris ERR_GET_LIB(e) == ERR_LIB_RSA && 31555714Skris ERR_GET_FUNC(e) == RSA_F_RSA_CHECK_KEY && 31655714Skris ERR_GET_REASON(e) != ERR_R_MALLOC_FAILURE) 31755714Skris { 31855714Skris BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(e)); 31955714Skris ERR_get_error(); /* remove e from error stack */ 32055714Skris } 32155714Skris } 32255714Skris 32355714Skris if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */ 32455714Skris { 32555714Skris ERR_print_errors(bio_err); 32655714Skris goto end; 32755714Skris } 32855714Skris } 32955714Skris 33059191Skris if (noout) 33159191Skris { 33259191Skris ret = 0; 33359191Skris goto end; 33459191Skris } 33559191Skris BIO_printf(bio_err,"writing RSA key\n"); 33659191Skris if (outformat == FORMAT_ASN1) { 33759191Skris if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa); 33859191Skris else i=i2d_RSAPrivateKey_bio(out,rsa); 33959191Skris } 34055714Skris#ifndef NO_RC4 34155714Skris else if (outformat == FORMAT_NETSCAPE) 34255714Skris { 34355714Skris unsigned char *p,*pp; 34455714Skris int size; 34555714Skris 34655714Skris i=1; 34755714Skris size=i2d_Netscape_RSA(rsa,NULL,NULL); 34855714Skris if ((p=(unsigned char *)Malloc(size)) == NULL) 34955714Skris { 35055714Skris BIO_printf(bio_err,"Malloc failure\n"); 35155714Skris goto end; 35255714Skris } 35355714Skris pp=p; 35455714Skris i2d_Netscape_RSA(rsa,&p,NULL); 35555714Skris BIO_write(out,(char *)pp,size); 35655714Skris Free(pp); 35755714Skris } 35855714Skris#endif 35959191Skris else if (outformat == FORMAT_PEM) { 36059191Skris if(pubout || pubin) 36159191Skris i=PEM_write_bio_RSA_PUBKEY(out,rsa); 36259191Skris else i=PEM_write_bio_RSAPrivateKey(out,rsa, 36359191Skris enc,NULL,0,NULL,passout); 36459191Skris } else { 36555714Skris BIO_printf(bio_err,"bad output format specified for outfile\n"); 36655714Skris goto end; 36755714Skris } 36855714Skris if (!i) 36955714Skris { 37059191Skris BIO_printf(bio_err,"unable to write key\n"); 37155714Skris ERR_print_errors(bio_err); 37255714Skris } 37355714Skris else 37455714Skris ret=0; 37555714Skrisend: 37659191Skris if(in != NULL) BIO_free(in); 37759191Skris if(out != NULL) BIO_free(out); 37859191Skris if(rsa != NULL) RSA_free(rsa); 37959191Skris if(passin) Free(passin); 38059191Skris if(passout) Free(passout); 38155714Skris EXIT(ret); 38255714Skris } 38359191Skris#else /* !NO_RSA */ 38459191Skris 38559191Skris# if PEDANTIC 38659191Skrisstatic void *dummy=&dummy; 38759191Skris# endif 38859191Skris 38955714Skris#endif 390