1/* crypto/asn1/t_pkey.c */
2/* Copyright (C) 1995-1998 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 <openssl/objects.h>
62#include <openssl/buffer.h>
63#include <openssl/bn.h>
64
65int 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	}
115