/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (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 <ctype.h>
-#include <limits.h>
-#include "internal/cryptlib.h"
-#include <openssl/buffer.h>
-#include "bn_lcl.h"
+#include <openssl/bio.h>
+#include "bn_local.h"
static const char Hex[] = "0123456789ABCDEF";
-/* Must 'OPENSSL_free' the returned data */
-char *BN_bn2hex(const BIGNUM *a)
-{
- int i, j, v, z = 0;
- char *buf;
- char *p;
-
- if (a->neg && BN_is_zero(a)) {
- /* "-0" == 3 bytes including NULL terminator */
- buf = OPENSSL_malloc(3);
- } else {
- buf = OPENSSL_malloc(a->top * BN_BYTES * 2 + 2);
- }
- if (buf == NULL) {
- BNerr(BN_F_BN_BN2HEX, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- p = buf;
- if (a->neg)
- *(p++) = '-';
- if (BN_is_zero(a))
- *(p++) = '0';
- for (i = a->top - 1; i >= 0; i--) {
- for (j = BN_BITS2 - 8; j >= 0; j -= 8) {
- /* strip leading zeros */
- v = ((int)(a->d[i] >> (long)j)) & 0xff;
- if (z || (v != 0)) {
- *(p++) = Hex[v >> 4];
- *(p++) = Hex[v & 0x0f];
- z = 1;
- }
- }
- }
- *p = '\0';
- err:
- return (buf);
-}
-
-/* Must 'OPENSSL_free' the returned data */
-char *BN_bn2dec(const BIGNUM *a)
-{
- int i = 0, num, ok = 0;
- char *buf = NULL;
- char *p;
- BIGNUM *t = NULL;
- BN_ULONG *bn_data = NULL, *lp;
- int bn_data_num;
-
- /*-
- * get an upper bound for the length of the decimal integer
- * num <= (BN_num_bits(a) + 1) * log(2)
- * <= 3 * BN_num_bits(a) * 0.1001 + log(2) + 1 (rounding error)
- * <= BN_num_bits(a)/10 + BN_num_bits/1000 + 1 + 1
- */
- i = BN_num_bits(a) * 3;
- num = (i / 10 + i / 1000 + 1) + 1;
- bn_data_num = num / BN_DEC_NUM + 1;
- bn_data = OPENSSL_malloc(bn_data_num * sizeof(BN_ULONG));
- buf = OPENSSL_malloc(num + 3);
- if ((buf == NULL) || (bn_data == NULL)) {
- BNerr(BN_F_BN_BN2DEC, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if ((t = BN_dup(a)) == NULL)
- goto err;
-
-#define BUF_REMAIN (num+3 - (size_t)(p - buf))
- p = buf;
- lp = bn_data;
- if (BN_is_zero(t)) {
- *(p++) = '0';
- *(p++) = '\0';
- } else {
- if (BN_is_negative(t))
- *p++ = '-';
-
- while (!BN_is_zero(t)) {
- if (lp - bn_data >= bn_data_num)
- goto err;
- *lp = BN_div_word(t, BN_DEC_CONV);
- if (*lp == (BN_ULONG)-1)
- goto err;
- lp++;
- }
- lp--;
- /*
- * We now have a series of blocks, BN_DEC_NUM chars in length, where
- * the last one needs truncation. The blocks need to be reversed in
- * order.
- */
- BIO_snprintf(p, BUF_REMAIN, BN_DEC_FMT1, *lp);
- while (*p)
- p++;
- while (lp != bn_data) {
- lp--;
- BIO_snprintf(p, BUF_REMAIN, BN_DEC_FMT2, *lp);
- while (*p)
- p++;
- }
- }
- ok = 1;
- err:
- OPENSSL_free(bn_data);
- BN_free(t);
- if (ok)
- return buf;
- OPENSSL_free(buf);
- return NULL;
-}
-
-int BN_hex2bn(BIGNUM **bn, const char *a)
-{
- BIGNUM *ret = NULL;
- BN_ULONG l = 0;
- int neg = 0, h, m, i, j, k, c;
- int num;
-
- if ((a == NULL) || (*a == '\0'))
- return (0);
-
- if (*a == '-') {
- neg = 1;
- a++;
- }
-
- for (i = 0; i <= (INT_MAX/4) && isxdigit((unsigned char)a[i]); i++)
- continue;
-
- if (i == 0 || i > INT_MAX/4)
- goto err;
-
- num = i + neg;
- if (bn == NULL)
- return (num);
-
- /* a is the start of the hex digits, and it is 'i' long */
- if (*bn == NULL) {
- if ((ret = BN_new()) == NULL)
- return (0);
- } else {
- ret = *bn;
- BN_zero(ret);
- }
-
- /* i is the number of hex digits */
- if (bn_expand(ret, i * 4) == NULL)
- goto err;
-
- j = i; /* least significant 'hex' */
- m = 0;
- h = 0;
- while (j > 0) {
- m = ((BN_BYTES * 2) <= j) ? (BN_BYTES * 2) : j;
- l = 0;
- for (;;) {
- c = a[j - m];
- k = OPENSSL_hexchar2int(c);
- if (k < 0)
- k = 0; /* paranoia */
- l = (l << 4) | k;
-
- if (--m <= 0) {
- ret->d[h++] = l;
- break;
- }
- }
- j -= (BN_BYTES * 2);
- }
- ret->top = h;
- bn_correct_top(ret);
- ret->neg = neg;
-
- *bn = ret;
- bn_check_top(ret);
- return (num);
- err:
- if (*bn == NULL)
- BN_free(ret);
- return (0);
-}
-
-int BN_dec2bn(BIGNUM **bn, const char *a)
-{
- BIGNUM *ret = NULL;
- BN_ULONG l = 0;
- int neg = 0, i, j;
- int num;
-
- if ((a == NULL) || (*a == '\0'))
- return (0);
- if (*a == '-') {
- neg = 1;
- a++;
- }
-
- for (i = 0; i <= (INT_MAX/4) && isdigit((unsigned char)a[i]); i++)
- continue;
-
- if (i == 0 || i > INT_MAX/4)
- goto err;
-
- num = i + neg;
- if (bn == NULL)
- return (num);
-
- /*
- * a is the start of the digits, and it is 'i' long. We chop it into
- * BN_DEC_NUM digits at a time
- */
- if (*bn == NULL) {
- if ((ret = BN_new()) == NULL)
- return (0);
- } else {
- ret = *bn;
- BN_zero(ret);
- }
-
- /* i is the number of digits, a bit of an over expand */
- if (bn_expand(ret, i * 4) == NULL)
- goto err;
-
- j = BN_DEC_NUM - (i % BN_DEC_NUM);
- if (j == BN_DEC_NUM)
- j = 0;
- l = 0;
- while (*a) {
- l *= 10;
- l += *a - '0';
- a++;
- if (++j == BN_DEC_NUM) {
- if (!BN_mul_word(ret, BN_DEC_CONV)
- || !BN_add_word(ret, l))
- goto err;
- l = 0;
- j = 0;
- }
- }
- ret->neg = neg;
-
- bn_correct_top(ret);
- *bn = ret;
- bn_check_top(ret);
- return (num);
- err:
- if (*bn == NULL)
- BN_free(ret);
- return (0);
-}
-
-int BN_asc2bn(BIGNUM **bn, const char *a)
-{
- const char *p = a;
- if (*p == '-')
- p++;
-
- if (p[0] == '0' && (p[1] == 'X' || p[1] == 'x')) {
- if (!BN_hex2bn(bn, p + 2))
- return 0;
- } else {
- if (!BN_dec2bn(bn, p))
- return 0;
- }
- if (*a == '-')
- (*bn)->neg = 1;
- return 1;
-}
-
-# ifndef OPENSSL_NO_STDIO
+#ifndef OPENSSL_NO_STDIO
int BN_print_fp(FILE *fp, const BIGNUM *a)
{
BIO *b;
int ret;
if ((b = BIO_new(BIO_s_file())) == NULL)
- return (0);
+ return 0;
BIO_set_fp(b, fp, BIO_NOCLOSE);
ret = BN_print(b, a);
BIO_free(b);
- return (ret);
+ return ret;
}
-# endif
+#endif
int BN_print(BIO *bp, const BIGNUM *a)
{
int i, j, v, z = 0;
int ret = 0;
- if ((a->neg) && (BIO_write(bp, "-", 1) != 1))
+ if ((a->neg) && BIO_write(bp, "-", 1) != 1)
goto end;
- if (BN_is_zero(a) && (BIO_write(bp, "0", 1) != 1))
+ if (BN_is_zero(a) && BIO_write(bp, "0", 1) != 1)
goto end;
for (i = a->top - 1; i >= 0; i--) {
for (j = BN_BITS2 - 4; j >= 0; j -= 4) {
/* strip leading zeros */
- v = ((int)(a->d[i] >> (long)j)) & 0x0f;
- if (z || (v != 0)) {
- if (BIO_write(bp, &(Hex[v]), 1) != 1)
+ v = (int)((a->d[i] >> j) & 0x0f);
+ if (z || v != 0) {
+ if (BIO_write(bp, &Hex[v], 1) != 1)
goto end;
z = 1;
}
}
ret = 1;
end:
- return (ret);
+ return ret;
}
char *BN_options(void)
if (!init) {
init++;
#ifdef BN_LLONG
- BIO_snprintf(data, sizeof data, "bn(%d,%d)",
- (int)sizeof(BN_ULLONG) * 8, (int)sizeof(BN_ULONG) * 8);
+ BIO_snprintf(data, sizeof(data), "bn(%zu,%zu)",
+ sizeof(BN_ULLONG) * 8, sizeof(BN_ULONG) * 8);
#else
- BIO_snprintf(data, sizeof data, "bn(%d,%d)",
- (int)sizeof(BN_ULONG) * 8, (int)sizeof(BN_ULONG) * 8);
+ BIO_snprintf(data, sizeof(data), "bn(%zu,%zu)",
+ sizeof(BN_ULONG) * 8, sizeof(BN_ULONG) * 8);
#endif
}
- return (data);
+ return data;
}
projects / openssl.git / blobdiff