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
12 #include "internal/cryptlib.h"
13 #include <openssl/buffer.h>
14 #include <openssl/asn1.h>
16 int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a)
19 static const char *h = "0123456789ABCDEF";
25 if (a->type & V_ASN1_NEG) {
26 if (BIO_write(bp, "-", 1) != 1)
32 if (BIO_write(bp, "00", 2) != 2)
36 for (i = 0; i < a->length; i++) {
37 if ((i != 0) && (i % 35 == 0)) {
38 if (BIO_write(bp, "\\\n", 2) != 2)
42 buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
43 buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
44 if (BIO_write(bp, buf, 2) != 2)
54 int a2i_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *bs, char *buf, int size)
56 int i, j, k, m, n, again, bufsize;
57 unsigned char *s = NULL, *sp;
59 int num = 0, slen = 0, first = 1;
61 bs->type = V_ASN1_INTEGER;
63 bufsize = BIO_gets(bp, buf, size);
68 if (buf[i - 1] == '\n')
72 if (buf[i - 1] == '\r')
76 again = (buf[i - 1] == '\\');
78 for (j = 0; j < i; j++) {
79 #ifndef CHARSET_EBCDIC
80 if (!(((buf[j] >= '0') && (buf[j] <= '9')) ||
81 ((buf[j] >= 'a') && (buf[j] <= 'f')) ||
82 ((buf[j] >= 'A') && (buf[j] <= 'F'))))
85 * This #ifdef is not strictly necessary, since the characters
86 * A...F a...f 0...9 are contiguous (yes, even in EBCDIC - but
87 * not the whole alphabet). Nevertheless, isxdigit() is faster.
89 if (!isxdigit(buf[j]))
98 * We have now cleared all the crap off the end of the line
103 bufp = (unsigned char *)buf;
106 if ((bufp[0] == '0') && (buf[1] == '0')) {
114 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ASN1_R_ODD_NUMBER_OF_CHARS);
118 if (num + i > slen) {
119 sp = OPENSSL_clear_realloc(s, slen, num + i * 2);
121 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);
128 for (j = 0; j < i; j++, k += 2) {
129 for (n = 0; n < 2; n++) {
130 m = OPENSSL_hexchar2int(bufp[k + n]);
132 ASN1err(ASN1_F_A2I_ASN1_INTEGER,
133 ASN1_R_NON_HEX_CHARACTERS);
142 bufsize = BIO_gets(bp, buf, size);
150 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ASN1_R_SHORT_LINE);
155 int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a)
157 return i2a_ASN1_INTEGER(bp, a);
160 int a2i_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *bs, char *buf, int size)
162 int rv = a2i_ASN1_INTEGER(bp, bs, buf, size);
164 bs->type = V_ASN1_INTEGER | (bs->type & V_ASN1_NEG);