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t_pkey.c
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1 /* crypto/asn1/t_pkey.c */
2 /* Copyright (C) 1995-1998 Eric Young ([email protected])
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young ([email protected]).
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 ([email protected]).
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 ([email protected])"
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 ([email protected])"
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 <openssl/objects.h>
62 #include <openssl/buffer.h>
63 #include <openssl/bn.h>
64 
65 int ASN1_bn_print(BIO *bp, const char *number, const BIGNUM *num,
66  unsigned char *buf, int off)
67  {
68  int n,i;
69  const char *neg;
70 
71  if (num == NULL) return(1);
72  neg = (BN_is_negative(num))?"-":"";
73  if(!BIO_indent(bp,off,128))
74  return 0;
75  if (BN_is_zero(num))
76  {
77  if (BIO_printf(bp, "%s 0\n", number) <= 0)
78  return 0;
79  return 1;
80  }
81 
82  if (BN_num_bytes(num) <= BN_BYTES)
83  {
84  if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,
85  (unsigned long)num->d[0],neg,(unsigned long)num->d[0])
86  <= 0) return(0);
87  }
88  else
89  {
90  buf[0]=0;
91  if (BIO_printf(bp,"%s%s",number,
92  (neg[0] == '-')?" (Negative)":"") <= 0)
93  return(0);
94  n=BN_bn2bin(num,&buf[1]);
95 
96  if (buf[1] & 0x80)
97  n++;
98  else buf++;
99 
100  for (i=0; i<n; i++)
101  {
102  if ((i%15) == 0)
103  {
104  if(BIO_puts(bp,"\n") <= 0
105  || !BIO_indent(bp,off+4,128))
106  return 0;
107  }
108  if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")
109  <= 0) return(0);
110  }
111  if (BIO_write(bp,"\n",1) <= 0) return(0);
112  }
113  return(1);
114  }