crypto/asn1/i2d_r_pr.c

   1 /* crypto/asn1/i2d_r_pr.c */
   2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include "bn.h"
  62 #include "rsa.h"
  63 #include "objects.h"
  64 #include "asn1_mac.h"
  65
  66 /*
  67  * ASN1err(ASN1_F_D2I_RSAPRIVATEKEY,ASN1_R_LENGTH_MISMATCH);
  68  * ASN1err(ASN1_F_I2D_RSAPRIVATEKEY,ASN1_R_UNKNOWN_ATTRIBUTE_TYPE);
  69  */
  70
  71 int i2d_RSAPrivateKey(a,pp)
  72 RSA *a;
  73 unsigned char **pp;
  74         {
  75         BIGNUM *num[9];
  76         unsigned char data[1];
  77         ASN1_INTEGER bs;
  78         unsigned int j,i,tot,t,len,max=0;
  79         unsigned char *p;
  80
  81         if (a == NULL) return(0);
  82
  83         num[1]=a->n;
  84         num[2]=a->e;
  85         num[3]=a->d;
  86         num[4]=a->p;
  87         num[5]=a->q;
  88         num[6]=a->dmp1;
  89         num[7]=a->dmq1;
  90         num[8]=a->iqmp;
  91
  92         bs.length=1;
  93         bs.data=data;
  94         bs.type=V_ASN1_INTEGER;
  95         data[0]=a->version&0x7f;
  96
  97         tot=i2d_ASN1_INTEGER(&(bs),NULL);
  98         for (i=1; i<9; i++)
  99                 {
 100                 j=BN_num_bits(num[i]);
 101                 len=((j == 0)?0:((j/8)+1));
 102                 if (len > max) max=len;
 103                 len=ASN1_object_size(0,len,
 104                         (num[i]->neg)?V_ASN1_NEG_INTEGER:V_ASN1_INTEGER);
 105                 tot+=len;
 106                 }
 107
 108         t=ASN1_object_size(1,tot,V_ASN1_SEQUENCE);
 109         if (pp == NULL) return(t);
 110
 111         p= *pp;
 112         ASN1_put_object(&p,1,tot,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
 113
 114         i2d_ASN1_INTEGER(&bs,&p);
 115
 116         bs.data=(unsigned char *)Malloc(max+4);
 117         if (bs.data == NULL)
 118                 {
 119                 ASN1err(ASN1_F_I2D_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);
 120                 return(-1);
 121                 }
 122
 123         for (i=1; i<9; i++)
 124                 {
 125                 bs.length=BN_bn2bin(num[i],bs.data);
 126                 i2d_ASN1_INTEGER(&bs,&p);
 127                 }
 128         Free((char *)bs.data);
 129         *pp=p;
 130         return(t);
 131         }
 132