-/* crypto/asn1/a_int.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
+/*
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
+#include "internal/numbers.h"
+#include <limits.h>
#include <openssl/asn1.h>
#include <openssl/bn.h>
+#include "asn1_locl.h"
ASN1_INTEGER *ASN1_INTEGER_dup(const ASN1_INTEGER *x)
{
}
/*-
- * This converts an ASN1 INTEGER into its content encoding.
+ * This converts a big endian buffer and sign into its content encoding.
+ * This is used for INTEGER and ENUMERATED types.
* The internal representation is an ASN1_STRING whose data is a big endian
* representation of the value, ignoring the sign. The sign is determined by
- * the type: V_ASN1_INTEGER for positive and V_ASN1_NEG_INTEGER for negative.
+ * the type: if type & V_ASN1_NEG is true it is negative, otherwise positive.
*
* Positive integers are no problem: they are almost the same as the DER
* encoding, except if the first byte is >= 0x80 we need to add a zero pad.
* followed by optional zeros isn't padded.
*/
-int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp)
+/*
+ * If |pad| is zero, the operation is effectively reduced to memcpy,
+ * and if |pad| is 0xff, then it performs two's complement, ~dst + 1.
+ * Note that in latter case sequence of zeros yields itself, and so
+ * does 0x80 followed by any number of zeros. These properties are
+ * used elsewhere below...
+ */
+static void twos_complement(unsigned char *dst, const unsigned char *src,
+ size_t len, unsigned char pad)
{
- int pad = 0, ret, i, neg;
- unsigned char *p, *n, pb = 0;
+ unsigned int carry = pad & 1;
+
+ /* Begin at the end of the encoding */
+ dst += len;
+ src += len;
+ /* two's complement value: ~value + 1 */
+ while (len-- != 0) {
+ *(--dst) = (unsigned char)(carry += *(--src) ^ pad);
+ carry >>= 8;
+ }
+}
- if (a == NULL)
- return (0);
- neg = a->type & V_ASN1_NEG;
- if (a->length == 0)
- ret = 1;
- else {
- ret = a->length;
- i = a->data[0];
+static size_t i2c_ibuf(const unsigned char *b, size_t blen, int neg,
+ unsigned char **pp)
+{
+ unsigned int pad = 0;
+ size_t ret, i;
+ unsigned char *p, pb = 0;
+
+ if (b != NULL && blen) {
+ ret = blen;
+ i = b[0];
if (!neg && (i > 127)) {
pad = 1;
pb = 0;
} else if (neg) {
+ pb = 0xFF;
if (i > 128) {
pad = 1;
- pb = 0xFF;
} else if (i == 128) {
/*
- * Special case: if any other bytes non zero we pad:
- * otherwise we don't.
+ * Special case [of minimal negative for given length]:
+ * if any other bytes non zero we pad, otherwise we don't.
*/
- for (i = 1; i < a->length; i++)
- if (a->data[i]) {
- pad = 1;
- pb = 0xFF;
- break;
- }
+ for (pad = 0, i = 1; i < blen; i++)
+ pad |= b[i];
+ pb = pad != 0 ? 0xffU : 0;
+ pad = pb & 1;
}
}
ret += pad;
+ } else {
+ ret = 1;
+ blen = 0; /* reduce '(b == NULL || blen == 0)' to '(blen == 0)' */
}
- if (pp == NULL)
- return (ret);
- p = *pp;
- if (pad)
- *(p++) = pb;
- if (a->length == 0)
- *(p++) = 0;
- else if (!neg)
- memcpy(p, a->data, (unsigned int)a->length);
- else {
- /* Begin at the end of the encoding */
- n = a->data + a->length - 1;
- p += a->length - 1;
- i = a->length;
- /* Copy zeros to destination as long as source is zero */
- while (!*n) {
- *(p--) = 0;
- n--;
- i--;
+ if (pp == NULL || (p = *pp) == NULL)
+ return ret;
+
+ /*
+ * This magically handles all corner cases, such as '(b == NULL ||
+ * blen == 0)', non-negative value, "negative" zero, 0x80 followed
+ * by any number of zeros...
+ */
+ *p = pb;
+ p += pad; /* yes, p[0] can be written twice, but it's little
+ * price to pay for eliminated branches */
+ twos_complement(p, b, blen, pb);
+
+ *pp += ret;
+ return ret;
+}
+
+/*
+ * convert content octets into a big endian buffer. Returns the length
+ * of buffer or 0 on error: for malformed INTEGER. If output buffer is
+ * NULL just return length.
+ */
+
+static size_t c2i_ibuf(unsigned char *b, int *pneg,
+ const unsigned char *p, size_t plen)
+{
+ int neg, pad;
+ /* Zero content length is illegal */
+ if (plen == 0) {
+ ASN1err(ASN1_F_C2I_IBUF, ASN1_R_ILLEGAL_ZERO_CONTENT);
+ return 0;
+ }
+ neg = p[0] & 0x80;
+ if (pneg)
+ *pneg = neg;
+ /* Handle common case where length is 1 octet separately */
+ if (plen == 1) {
+ if (b != NULL) {
+ if (neg)
+ b[0] = (p[0] ^ 0xFF) + 1;
+ else
+ b[0] = p[0];
}
- /* Complement and increment next octet */
- *(p--) = ((*(n--)) ^ 0xff) + 1;
- i--;
- /* Complement any octets left */
- for (; i > 0; i--)
- *(p--) = *(n--) ^ 0xff;
+ return 1;
+ }
+ if (p[0] == 0 || p[0] == 0xFF)
+ pad = 1;
+ else
+ pad = 0;
+ /* reject illegal padding: first two octets MSB can't match */
+ if (pad && (neg == (p[1] & 0x80))) {
+ ASN1err(ASN1_F_C2I_IBUF, ASN1_R_ILLEGAL_PADDING);
+ return 0;
}
- *pp += ret;
- return (ret);
+ /* skip over pad */
+ p += pad;
+ plen -= pad;
+
+ if (b != NULL)
+ twos_complement(b, p, plen, neg ? 0xffU : 0);
+
+ return plen;
+}
+
+int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp)
+{
+ return i2c_ibuf(a->data, a->length, a->type & V_ASN1_NEG, pp);
+}
+
+/* Convert big endian buffer into uint64_t, return 0 on error */
+static int asn1_get_uint64(uint64_t *pr, const unsigned char *b, size_t blen)
+{
+ size_t i;
+ uint64_t r;
+
+ if (blen > sizeof(*pr)) {
+ ASN1err(ASN1_F_ASN1_GET_UINT64, ASN1_R_TOO_LARGE);
+ return 0;
+ }
+ if (b == NULL)
+ return 0;
+ for (r = 0, i = 0; i < blen; i++) {
+ r <<= 8;
+ r |= b[i];
+ }
+ *pr = r;
+ return 1;
}
-/* Convert just ASN1 INTEGER content octets to ASN1_INTEGER structure */
+/*
+ * Write uint64_t to big endian buffer and return offset to first
+ * written octet. In other words it returns offset in range from 0
+ * to 7, with 0 denoting 8 written octets and 7 - one.
+ */
+static size_t asn1_put_uint64(unsigned char b[sizeof(uint64_t)], uint64_t r)
+{
+ size_t off = sizeof(uint64_t);
+
+ do {
+ b[--off] = (unsigned char)r;
+ } while (r >>= 8);
+
+ return off;
+}
+
+/*
+ * Absolute value of INT64_MIN: we can't just use -INT64_MIN as it produces
+ * overflow warnings.
+ */
+
+#define ABS_INT64_MIN \
+ ((uint64_t)INT64_MAX + (uint64_t)(-(INT64_MIN + INT64_MAX)))
+
+/* signed version of asn1_get_uint64 */
+static int asn1_get_int64(int64_t *pr, const unsigned char *b, size_t blen,
+ int neg)
+{
+ uint64_t r;
+ if (asn1_get_uint64(&r, b, blen) == 0)
+ return 0;
+ if (neg) {
+ if (r > ABS_INT64_MIN) {
+ ASN1err(ASN1_F_ASN1_GET_INT64, ASN1_R_TOO_SMALL);
+ return 0;
+ }
+ *pr = 0 - (uint64_t)r;
+ } else {
+ if (r > INT64_MAX) {
+ ASN1err(ASN1_F_ASN1_GET_INT64, ASN1_R_TOO_LARGE);
+ return 0;
+ }
+ *pr = (int64_t)r;
+ }
+ return 1;
+}
+/* Convert ASN1 INTEGER content octets to ASN1_INTEGER structure */
ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a, const unsigned char **pp,
long len)
{
ASN1_INTEGER *ret = NULL;
- const unsigned char *p, *pend;
- unsigned char *to, *s;
- int i;
+ size_t r;
+ int neg;
+
+ r = c2i_ibuf(NULL, NULL, *pp, len);
+
+ if (r == 0)
+ return NULL;
if ((a == NULL) || ((*a) == NULL)) {
- if ((ret = ASN1_INTEGER_new()) == NULL)
- return (NULL);
+ ret = ASN1_INTEGER_new();
+ if (ret == NULL)
+ return NULL;
ret->type = V_ASN1_INTEGER;
} else
- ret = (*a);
+ ret = *a;
- p = *pp;
- pend = p + len;
-
- /*
- * We must OPENSSL_malloc stuff, even for 0 bytes otherwise it signifies
- * a missing NULL parameter.
- */
- s = (unsigned char *)OPENSSL_malloc((int)len + 1);
- if (s == NULL) {
- i = ERR_R_MALLOC_FAILURE;
+ if (ASN1_STRING_set(ret, NULL, r) == 0)
goto err;
- }
- to = s;
- if (!len) {
- /*
- * Strictly speaking this is an illegal INTEGER but we tolerate it.
- */
- ret->type = V_ASN1_INTEGER;
- } else if (*p & 0x80) { /* a negative number */
- ret->type = V_ASN1_NEG_INTEGER;
- if ((*p == 0xff) && (len != 1)) {
- p++;
- len--;
- }
- i = len;
- p += i - 1;
- to += i - 1;
- while ((!*p) && i) {
- *(to--) = 0;
- i--;
- p--;
- }
- /*
- * Special case: if all zeros then the number will be of the form FF
- * followed by n zero bytes: this corresponds to 1 followed by n zero
- * bytes. We've already written n zeros so we just append an extra
- * one and set the first byte to a 1. This is treated separately
- * because it is the only case where the number of bytes is larger
- * than len.
- */
- if (!i) {
- *s = 1;
- s[len] = 0;
- len++;
- } else {
- *(to--) = (*(p--) ^ 0xff) + 1;
- i--;
- for (; i > 0; i--)
- *(to--) = *(p--) ^ 0xff;
- }
- } else {
- ret->type = V_ASN1_INTEGER;
- if ((*p == 0) && (len != 1)) {
- p++;
- len--;
- }
- memcpy(s, p, (int)len);
- }
- if (ret->data != NULL)
- OPENSSL_free(ret->data);
- ret->data = s;
- ret->length = (int)len;
+ c2i_ibuf(ret->data, &neg, *pp, len);
+
+ if (neg)
+ ret->type |= V_ASN1_NEG;
+
+ *pp += len;
if (a != NULL)
(*a) = ret;
- *pp = pend;
- return (ret);
+ return ret;
err:
- ASN1err(ASN1_F_C2I_ASN1_INTEGER, i);
+ ASN1err(ASN1_F_C2I_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);
if ((a == NULL) || (*a != ret))
ASN1_INTEGER_free(ret);
- return (NULL);
+ return NULL;
+}
+
+static int asn1_string_get_int64(int64_t *pr, const ASN1_STRING *a, int itype)
+{
+ if (a == NULL) {
+ ASN1err(ASN1_F_ASN1_STRING_GET_INT64, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ if ((a->type & ~V_ASN1_NEG) != itype) {
+ ASN1err(ASN1_F_ASN1_STRING_GET_INT64, ASN1_R_WRONG_INTEGER_TYPE);
+ return 0;
+ }
+ return asn1_get_int64(pr, a->data, a->length, a->type & V_ASN1_NEG);
+}
+
+static int asn1_string_set_int64(ASN1_STRING *a, int64_t r, int itype)
+{
+ unsigned char tbuf[sizeof(r)];
+ size_t off;
+
+ a->type = itype;
+ if (r < 0) {
+ off = asn1_put_uint64(tbuf, -r);
+ a->type |= V_ASN1_NEG;
+ } else {
+ off = asn1_put_uint64(tbuf, r);
+ a->type &= ~V_ASN1_NEG;
+ }
+ return ASN1_STRING_set(a, tbuf + off, sizeof(tbuf) - off);
+}
+
+static int asn1_string_get_uint64(uint64_t *pr, const ASN1_STRING *a,
+ int itype)
+{
+ if (a == NULL) {
+ ASN1err(ASN1_F_ASN1_STRING_GET_UINT64, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ if ((a->type & ~V_ASN1_NEG) != itype) {
+ ASN1err(ASN1_F_ASN1_STRING_GET_UINT64, ASN1_R_WRONG_INTEGER_TYPE);
+ return 0;
+ }
+ if (a->type & V_ASN1_NEG) {
+ ASN1err(ASN1_F_ASN1_STRING_GET_UINT64, ASN1_R_ILLEGAL_NEGATIVE_VALUE);
+ return 0;
+ }
+ return asn1_get_uint64(pr, a->data, a->length);
+}
+
+static int asn1_string_set_uint64(ASN1_STRING *a, uint64_t r, int itype)
+{
+ unsigned char tbuf[sizeof(r)];
+ size_t off;
+
+ a->type = itype;
+ off = asn1_put_uint64(tbuf, r);
+ return ASN1_STRING_set(a, tbuf + off, sizeof(tbuf) - off);
}
/*
* We must OPENSSL_malloc stuff, even for 0 bytes otherwise it signifies
* a missing NULL parameter.
*/
- s = (unsigned char *)OPENSSL_malloc((int)len + 1);
+ s = OPENSSL_malloc((int)len + 1);
if (s == NULL) {
i = ERR_R_MALLOC_FAILURE;
goto err;
p += len;
}
- if (ret->data != NULL)
- OPENSSL_free(ret->data);
+ OPENSSL_free(ret->data);
ret->data = s;
ret->length = (int)len;
if (a != NULL)
return (NULL);
}
-int ASN1_INTEGER_set(ASN1_INTEGER *a, long v)
+static ASN1_STRING *bn_to_asn1_string(const BIGNUM *bn, ASN1_STRING *ai,
+ int atype)
{
- int j, k;
- unsigned int i;
- unsigned char buf[sizeof(long) + 1];
+ ASN1_INTEGER *ret;
+ int len;
- if (a->length < (int)(sizeof(long) + 1)) {
- if (a->data != NULL)
- OPENSSL_free(a->data);
- if ((a->data =
- (unsigned char *)OPENSSL_malloc(sizeof(long) + 1)) != NULL)
- memset((char *)a->data, 0, sizeof(long) + 1);
+ if (ai == NULL) {
+ ret = ASN1_STRING_type_new(atype);
+ } else {
+ ret = ai;
+ ret->type = atype;
}
- if (a->data == NULL) {
- ASN1err(ASN1_F_ASN1_INTEGER_SET, ERR_R_MALLOC_FAILURE);
- return (0);
+
+ if (ret == NULL) {
+ ASN1err(ASN1_F_BN_TO_ASN1_STRING, ERR_R_NESTED_ASN1_ERROR);
+ goto err;
}
- if (v < 0) {
- v = -v;
- a->type = V_ASN1_NEG_INTEGER;
- } else
- a->type = V_ASN1_INTEGER;
- for (i = 0; i < sizeof(long); i++) {
- if (v == 0)
- break;
- buf[i] = (int)v & 0xff;
- v >>= 8;
+ if (BN_is_negative(bn) && !BN_is_zero(bn))
+ ret->type |= V_ASN1_NEG_INTEGER;
+
+ len = BN_num_bytes(bn);
+
+ if (len == 0)
+ len = 1;
+
+ if (ASN1_STRING_set(ret, NULL, len) == 0) {
+ ASN1err(ASN1_F_BN_TO_ASN1_STRING, ERR_R_MALLOC_FAILURE);
+ goto err;
}
- j = 0;
- for (k = i - 1; k >= 0; k--)
- a->data[j++] = buf[k];
- a->length = j;
- return (1);
+
+ /* Correct zero case */
+ if (BN_is_zero(bn))
+ ret->data[0] = 0;
+ else
+ len = BN_bn2bin(bn, ret->data);
+ ret->length = len;
+ return ret;
+ err:
+ if (ret != ai)
+ ASN1_INTEGER_free(ret);
+ return (NULL);
}
-long ASN1_INTEGER_get(const ASN1_INTEGER *a)
+static BIGNUM *asn1_string_to_bn(const ASN1_INTEGER *ai, BIGNUM *bn,
+ int itype)
+{
+ BIGNUM *ret;
+
+ if ((ai->type & ~V_ASN1_NEG) != itype) {
+ ASN1err(ASN1_F_ASN1_STRING_TO_BN, ASN1_R_WRONG_INTEGER_TYPE);
+ return NULL;
+ }
+
+ ret = BN_bin2bn(ai->data, ai->length, bn);
+ if (ret == NULL) {
+ ASN1err(ASN1_F_ASN1_STRING_TO_BN, ASN1_R_BN_LIB);
+ return NULL;
+ }
+ if (ai->type & V_ASN1_NEG)
+ BN_set_negative(ret, 1);
+ return ret;
+}
+
+int ASN1_INTEGER_get_int64(int64_t *pr, const ASN1_INTEGER *a)
+{
+ return asn1_string_get_int64(pr, a, V_ASN1_INTEGER);
+}
+
+int ASN1_INTEGER_set_int64(ASN1_INTEGER *a, int64_t r)
+{
+ return asn1_string_set_int64(a, r, V_ASN1_INTEGER);
+}
+
+int ASN1_INTEGER_get_uint64(uint64_t *pr, const ASN1_INTEGER *a)
+{
+ return asn1_string_get_uint64(pr, a, V_ASN1_INTEGER);
+}
+
+int ASN1_INTEGER_set_uint64(ASN1_INTEGER *a, uint64_t r)
{
- int neg = 0, i;
- long r = 0;
+ return asn1_string_set_uint64(a, r, V_ASN1_INTEGER);
+}
+int ASN1_INTEGER_set(ASN1_INTEGER *a, long v)
+{
+ return ASN1_INTEGER_set_int64(a, v);
+}
+
+long ASN1_INTEGER_get(const ASN1_INTEGER *a)
+{
+ int i;
+ int64_t r;
if (a == NULL)
- return (0L);
- i = a->type;
- if (i == V_ASN1_NEG_INTEGER)
- neg = 1;
- else if (i != V_ASN1_INTEGER)
+ return 0;
+ i = ASN1_INTEGER_get_int64(&r, a);
+ if (i == 0)
return -1;
-
- if (a->length > (int)sizeof(long)) {
- /* hmm... a bit ugly, return all ones */
+ if (r > LONG_MAX || r < LONG_MIN)
return -1;
- }
- if (a->data == NULL)
+ return (long)r;
+}
+
+ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai)
+{
+ return bn_to_asn1_string(bn, ai, V_ASN1_INTEGER);
+}
+
+BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn)
+{
+ return asn1_string_to_bn(ai, bn, V_ASN1_INTEGER);
+}
+
+int ASN1_ENUMERATED_get_int64(int64_t *pr, const ASN1_ENUMERATED *a)
+{
+ return asn1_string_get_int64(pr, a, V_ASN1_ENUMERATED);
+}
+
+int ASN1_ENUMERATED_set_int64(ASN1_ENUMERATED *a, int64_t r)
+{
+ return asn1_string_set_int64(a, r, V_ASN1_ENUMERATED);
+}
+
+int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
+{
+ return ASN1_ENUMERATED_set_int64(a, v);
+}
+
+long ASN1_ENUMERATED_get(const ASN1_ENUMERATED *a)
+{
+ int i;
+ int64_t r;
+ if (a == NULL)
return 0;
+ if ((a->type & ~V_ASN1_NEG) != V_ASN1_ENUMERATED)
+ return -1;
+ if (a->length > (int)sizeof(long))
+ return 0xffffffffL;
+ i = ASN1_ENUMERATED_get_int64(&r, a);
+ if (i == 0)
+ return -1;
+ if (r > LONG_MAX || r < LONG_MIN)
+ return -1;
+ return (long)r;
+}
- for (i = 0; i < a->length; i++) {
- r <<= 8;
- r |= (unsigned char)a->data[i];
- }
- if (neg)
- r = -r;
- return (r);
+ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(const BIGNUM *bn, ASN1_ENUMERATED *ai)
+{
+ return bn_to_asn1_string(bn, ai, V_ASN1_ENUMERATED);
}
-ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai)
+BIGNUM *ASN1_ENUMERATED_to_BN(const ASN1_ENUMERATED *ai, BIGNUM *bn)
{
- ASN1_INTEGER *ret;
- int len, j;
+ return asn1_string_to_bn(ai, bn, V_ASN1_ENUMERATED);
+}
- if (ai == NULL)
- ret = ASN1_INTEGER_new();
- else
- ret = ai;
- if (ret == NULL) {
- ASN1err(ASN1_F_BN_TO_ASN1_INTEGER, ERR_R_NESTED_ASN1_ERROR);
- goto err;
- }
- if (BN_is_negative(bn))
- ret->type = V_ASN1_NEG_INTEGER;
- else
- ret->type = V_ASN1_INTEGER;
- j = BN_num_bits(bn);
- len = ((j == 0) ? 0 : ((j / 8) + 1));
- if (ret->length < len + 4) {
- unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4);
- if (!new_data) {
- ASN1err(ASN1_F_BN_TO_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- ret->data = new_data;
- }
- ret->length = BN_bn2bin(bn, ret->data);
- /* Correct zero case */
- if (!ret->length) {
- ret->data[0] = 0;
- ret->length = 1;
+/* Internal functions used by x_int64.c */
+int c2i_uint64_int(uint64_t *ret, int *neg, const unsigned char **pp, long len)
+{
+ unsigned char buf[sizeof(uint64_t)];
+ size_t buflen;
+
+ buflen = c2i_ibuf(NULL, NULL, *pp, len);
+ if (buflen == 0)
+ return 0;
+ if (buflen > sizeof(uint64_t)) {
+ ASN1err(ASN1_F_C2I_UINT64_INT, ASN1_R_TOO_LARGE);
+ return 0;
}
- return (ret);
- err:
- if (ret != ai)
- ASN1_INTEGER_free(ret);
- return (NULL);
+ (void)c2i_ibuf(buf, neg, *pp, len);
+ return asn1_get_uint64(ret, buf, buflen);
}
-BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn)
+int i2c_uint64_int(unsigned char *p, uint64_t r, int neg)
{
- BIGNUM *ret;
+ unsigned char buf[sizeof(uint64_t)];
+ size_t off;
- if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
- ASN1err(ASN1_F_ASN1_INTEGER_TO_BN, ASN1_R_BN_LIB);
- else if (ai->type == V_ASN1_NEG_INTEGER)
- BN_set_negative(ret, 1);
- return (ret);
+ off = asn1_put_uint64(buf, r);
+ return i2c_ibuf(buf + off, sizeof(buf) - off, neg, &p);
}
+
projects / openssl.git / blobdiff