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Diffstat (limited to 'thirdparty/openssl/crypto/asn1/a_int.c')
-rw-r--r-- | thirdparty/openssl/crypto/asn1/a_int.c | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/thirdparty/openssl/crypto/asn1/a_int.c b/thirdparty/openssl/crypto/asn1/a_int.c deleted file mode 100644 index 7e26704a54..0000000000 --- a/thirdparty/openssl/crypto/asn1/a_int.c +++ /dev/null @@ -1,464 +0,0 @@ -/* 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. - * - * 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.] - */ - -#include <stdio.h> -#include "cryptlib.h" -#include <openssl/asn1.h> -#include <openssl/bn.h> - -ASN1_INTEGER *ASN1_INTEGER_dup(const ASN1_INTEGER *x) -{ - return M_ASN1_INTEGER_dup(x); -} - -int ASN1_INTEGER_cmp(const ASN1_INTEGER *x, const ASN1_INTEGER *y) -{ - int neg, ret; - /* Compare signs */ - neg = x->type & V_ASN1_NEG; - if (neg != (y->type & V_ASN1_NEG)) { - if (neg) - return -1; - else - return 1; - } - - ret = ASN1_STRING_cmp(x, y); - - if (neg) - return -ret; - else - return ret; -} - -/*- - * This converts an ASN1 INTEGER into its content encoding. - * 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. - * - * 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. - * - * Negative integers are a bit trickier... - * The DER representation of negative integers is in 2s complement form. - * The internal form is converted by complementing each octet and finally - * adding one to the result. This can be done less messily with a little trick. - * If the internal form has trailing zeroes then they will become FF by the - * complement and 0 by the add one (due to carry) so just copy as many trailing - * zeros to the destination as there are in the source. The carry will add one - * to the last none zero octet: so complement this octet and add one and finally - * complement any left over until you get to the start of the string. - * - * Padding is a little trickier too. If the first bytes is > 0x80 then we pad - * with 0xff. However if the first byte is 0x80 and one of the following bytes - * is non-zero we pad with 0xff. The reason for this distinction is that 0x80 - * followed by optional zeros isn't padded. - */ - -int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp) -{ - int pad = 0, ret, i, neg; - unsigned char *p, *n, pb = 0; - - 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]; - if (ret == 1 && i == 0) - neg = 0; - if (!neg && (i > 127)) { - pad = 1; - pb = 0; - } else if (neg) { - 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. - */ - for (i = 1; i < a->length; i++) - if (a->data[i]) { - pad = 1; - pb = 0xFF; - break; - } - } - } - ret += pad; - } - 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 && i > 1) { - *(p--) = 0; - n--; - i--; - } - /* Complement and increment next octet */ - *(p--) = ((*(n--)) ^ 0xff) + 1; - i--; - /* Complement any octets left */ - for (; i > 0; i--) - *(p--) = *(n--) ^ 0xff; - } - - *pp += ret; - return (ret); -} - -/* Convert just 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; - - if ((a == NULL) || ((*a) == NULL)) { - if ((ret = M_ASN1_INTEGER_new()) == NULL) - return (NULL); - ret->type = V_ASN1_INTEGER; - } else - 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; - 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; - if (a != NULL) - (*a) = ret; - *pp = pend; - return (ret); - err: - ASN1err(ASN1_F_C2I_ASN1_INTEGER, i); - if ((ret != NULL) && ((a == NULL) || (*a != ret))) - M_ASN1_INTEGER_free(ret); - return (NULL); -} - -/* - * This is a version of d2i_ASN1_INTEGER that ignores the sign bit of ASN1 - * integers: some broken software can encode a positive INTEGER with its MSB - * set as negative (it doesn't add a padding zero). - */ - -ASN1_INTEGER *d2i_ASN1_UINTEGER(ASN1_INTEGER **a, const unsigned char **pp, - long length) -{ - ASN1_INTEGER *ret = NULL; - const unsigned char *p; - unsigned char *s; - long len; - int inf, tag, xclass; - int i; - - if ((a == NULL) || ((*a) == NULL)) { - if ((ret = M_ASN1_INTEGER_new()) == NULL) - return (NULL); - ret->type = V_ASN1_INTEGER; - } else - ret = (*a); - - p = *pp; - inf = ASN1_get_object(&p, &len, &tag, &xclass, length); - if (inf & 0x80) { - i = ASN1_R_BAD_OBJECT_HEADER; - goto err; - } - - if (tag != V_ASN1_INTEGER) { - i = ASN1_R_EXPECTING_AN_INTEGER; - goto err; - } - - /* - * 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; - goto err; - } - ret->type = V_ASN1_INTEGER; - if (len) { - if ((*p == 0) && (len != 1)) { - p++; - len--; - } - memcpy(s, p, (int)len); - p += len; - } - - if (ret->data != NULL) - OPENSSL_free(ret->data); - ret->data = s; - ret->length = (int)len; - if (a != NULL) - (*a) = ret; - *pp = p; - return (ret); - err: - ASN1err(ASN1_F_D2I_ASN1_UINTEGER, i); - if ((ret != NULL) && ((a == NULL) || (*a != ret))) - M_ASN1_INTEGER_free(ret); - return (NULL); -} - -int ASN1_INTEGER_set(ASN1_INTEGER *a, long v) -{ - int j, k; - unsigned int i; - unsigned char buf[sizeof(long) + 1]; - long d; - - a->type = V_ASN1_INTEGER; - 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 (a->data == NULL) { - ASN1err(ASN1_F_ASN1_INTEGER_SET, ERR_R_MALLOC_FAILURE); - return (0); - } - d = v; - if (d < 0) { - d = -d; - a->type = V_ASN1_NEG_INTEGER; - } - - for (i = 0; i < sizeof(long); i++) { - if (d == 0) - break; - buf[i] = (int)d & 0xff; - d >>= 8; - } - j = 0; - for (k = i - 1; k >= 0; k--) - a->data[j++] = buf[k]; - a->length = j; - return (1); -} - -long ASN1_INTEGER_get(const ASN1_INTEGER *a) -{ - int neg = 0, i; - long r = 0; - - if (a == NULL) - return (0L); - i = a->type; - if (i == V_ASN1_NEG_INTEGER) - neg = 1; - else if (i != V_ASN1_INTEGER) - return -1; - - if (a->length > (int)sizeof(long)) { - /* hmm... a bit ugly, return all ones */ - return -1; - } - if (a->data == NULL) - return 0; - - for (i = 0; i < a->length; i++) { - r <<= 8; - r |= (unsigned char)a->data[i]; - } - if (neg) - r = -r; - return (r); -} - -ASN1_INTEGER *BN_to_ASN1_INTEGER(const BIGNUM *bn, ASN1_INTEGER *ai) -{ - ASN1_INTEGER *ret; - int len, j; - - if (ai == NULL) - ret = M_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) && !BN_is_zero(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; - } - return (ret); - err: - if (ret != ai) - M_ASN1_INTEGER_free(ret); - return (NULL); -} - -BIGNUM *ASN1_INTEGER_to_BN(const ASN1_INTEGER *ai, BIGNUM *bn) -{ - BIGNUM *ret; - - 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); -} - -IMPLEMENT_STACK_OF(ASN1_INTEGER) - -IMPLEMENT_ASN1_SET_OF(ASN1_INTEGER) |