2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/objects.h>
13 #include <openssl/buffer.h>
14 #include "internal/bn_int.h"
16 /* Number of octets per line */
17 #define ASN1_BUF_PRINT_WIDTH 15
19 #define ASN1_PRINT_MAX_INDENT 128
21 int ASN1_buf_print(BIO *bp, const unsigned char *buf, size_t buflen, int indent)
25 for (i = 0; i < buflen; i++) {
26 if ((i % ASN1_BUF_PRINT_WIDTH) == 0) {
27 if (i > 0 && BIO_puts(bp, "\n") <= 0)
29 if (!BIO_indent(bp, indent, ASN1_PRINT_MAX_INDENT))
33 * Use colon separators for each octet for compatibility as
34 * this function is used to print out key components.
36 if (BIO_printf(bp, "%02x%s", buf[i],
37 (i == buflen - 1) ? "" : ":") <= 0)
40 if (BIO_write(bp, "\n", 1) <= 0)
45 int ASN1_bn_print(BIO *bp, const char *number, const BIGNUM *num,
46 unsigned char *ign, int indent)
50 unsigned char *buf = NULL, *tmp = NULL;
55 neg = BN_is_negative(num) ? "-" : "";
56 if (!BIO_indent(bp, indent, ASN1_PRINT_MAX_INDENT))
58 if (BN_is_zero(num)) {
59 if (BIO_printf(bp, "%s 0\n", number) <= 0)
64 if (BN_num_bytes(num) <= BN_BYTES) {
65 if (BIO_printf(bp, "%s %s%lu (%s0x%lx)\n", number, neg,
66 (unsigned long)bn_get_words(num)[0], neg,
67 (unsigned long)bn_get_words(num)[0]) <= 0)
72 buflen = BN_num_bytes(num) + 1;
73 buf = tmp = OPENSSL_malloc(buflen);
77 if (BIO_printf(bp, "%s%s\n", number,
78 (neg[0] == '-') ? " (Negative)" : "") <= 0)
80 n = BN_bn2bin(num, buf + 1);
87 if (ASN1_buf_print(bp, tmp, n, indent + 4) == 0)
91 OPENSSL_clear_free(buf, buflen);