2 * Copyright 1995-2017 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/ctype.h"
12 #include "internal/cryptlib.h"
13 #include <openssl/buffer.h>
14 #include <openssl/asn1.h>
16 int i2a_ASN1_INTEGER(BIO *bp, const 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 if (!ossl_isxdigit(buf[j]))
87 * We have now cleared all the crap off the end of the line
92 bufp = (unsigned char *)buf;
95 if ((bufp[0] == '0') && (bufp[1] == '0')) {
103 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ASN1_R_ODD_NUMBER_OF_CHARS);
108 if (num + i > slen) {
109 sp = OPENSSL_clear_realloc(s, slen, num + i * 2);
111 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);
118 for (j = 0; j < i; j++, k += 2) {
119 for (n = 0; n < 2; n++) {
120 m = OPENSSL_hexchar2int(bufp[k + n]);
122 ASN1err(ASN1_F_A2I_ASN1_INTEGER,
123 ASN1_R_NON_HEX_CHARACTERS);
132 bufsize = BIO_gets(bp, buf, size);
140 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ASN1_R_SHORT_LINE);
145 int i2a_ASN1_ENUMERATED(BIO *bp, const ASN1_ENUMERATED *a)
147 return i2a_ASN1_INTEGER(bp, a);
150 int a2i_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *bs, char *buf, int size)
152 int rv = a2i_ASN1_INTEGER(bp, bs, buf, size);
154 bs->type = V_ASN1_INTEGER | (bs->type & V_ASN1_NEG);