/*
- * Written by Adam Langley (Google) for the OpenSSL project
+ * Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * 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
*/
+
/* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
*/
#include <openssl/opensslconf.h>
-#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+#ifdef OPENSSL_NO_EC_NISTP_64_GCC_128
+NON_EMPTY_TRANSLATION_UNIT
+#else
# include <stdint.h>
# include <string.h>
# include <openssl/err.h>
# include "ec_lcl.h"
-# if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
+# if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__==16
/* even with gcc, the typedef won't work for 32-bit platforms */
typedef __uint128_t uint128_t; /* nonstandard; implemented by gcc on 64-bit
* platforms */
typedef __int128_t int128_t;
# else
-# error "Need GCC 3.1 or later to define type uint128_t"
+# error "Your compiler doesn't appear to support 128-bit integer types"
# endif
typedef uint8_t u8;
typedef uint32_t u32;
typedef uint64_t u64;
-typedef int64_t s64;
/*
* The underlying field. P256 operates over GF(2^256-2^224+2^192+2^96-1). We
/* BN_bn2bin eats leading zeroes */
memset(b_out, 0, sizeof(b_out));
num_bytes = BN_num_bytes(bn);
- if (num_bytes > sizeof b_out) {
+ if (num_bytes > sizeof(b_out)) {
ECerr(EC_F_BN_TO_FELEM, EC_R_BIGNUM_OUT_OF_RANGE);
return 0;
}
{
felem_bytearray b_in, b_out;
smallfelem_to_bin32(b_in, in);
- flip_endian(b_out, b_in, sizeof b_out);
- return BN_bin2bn(b_out, sizeof b_out, out);
+ flip_endian(b_out, b_in, sizeof(b_out));
+ return BN_bin2bn(b_out, sizeof(b_out), out);
}
/*-
{
felem tmp;
u64 a, b, mask;
- s64 high, low;
+ u64 high, low;
static const u64 kPrime3Test = 0x7fffffff00000001ul; /* 2^63 - 2^32 + 1 */
/* Carry 2->3 */
* In order to make space in tmp[3] for the carry from 2 -> 3, we
* conditionally subtract kPrime if tmp[3] is large enough.
*/
- high = tmp[3] >> 64;
+ high = (u64)(tmp[3] >> 64);
/* As tmp[3] < 2^65, high is either 1 or 0 */
- high <<= 63;
- high >>= 63;
+ high = 0 - high;
/*-
* high is:
* all ones if the high word of tmp[3] is 1
- * all zeros if the high word of tmp[3] if 0 */
- low = tmp[3];
- mask = low >> 63;
+ * all zeros if the high word of tmp[3] if 0
+ */
+ low = (u64)tmp[3];
+ mask = 0 - (low >> 63);
/*-
* mask is:
* all ones if the MSB of low is 1
- * all zeros if the MSB of low if 0 */
+ * all zeros if the MSB of low if 0
+ */
low &= bottom63bits;
low -= kPrime3Test;
/* if low was greater than kPrime3Test then the MSB is zero */
low = ~low;
- low >>= 63;
+ low = 0 - (low >> 63);
/*-
* low is:
* all ones if low was > kPrime3Test
- * all zeros if low was <= kPrime3Test */
+ * all zeros if low was <= kPrime3Test
+ */
mask = (mask & low) | high;
tmp[0] -= mask & kPrime[0];
tmp[1] -= mask & kPrime[1];
equal &= equal << 4;
equal &= equal << 2;
equal &= equal << 1;
- equal = ((s64) equal) >> 63;
+ equal = 0 - (equal >> 63);
all_equal_so_far &= equal;
}
is_zero &= is_zero << 4;
is_zero &= is_zero << 2;
is_zero &= is_zero << 1;
- is_zero = ((s64) is_zero) >> 63;
+ is_zero = 0 - (is_zero >> 63);
is_p = (small[0] ^ kPrime[0]) |
(small[1] ^ kPrime[1]) |
is_p &= is_p << 4;
is_p &= is_p << 2;
is_p &= is_p << 1;
- is_p = ((s64) is_p) >> 63;
+ is_p = 0 - (is_p >> 63);
is_zero |= is_p;
return result;
}
-static int smallfelem_is_zero_int(const smallfelem small)
+static int smallfelem_is_zero_int(const void *small)
{
return (int)(smallfelem_is_zero(small) & ((limb) 1));
}
/* Precomputation for the group generator. */
struct nistp256_pre_comp_st {
smallfelem g_pre_comp[2][16][3];
- int references;
+ CRYPTO_REF_COUNT references;
+ CRYPTO_RWLOCK *lock;
};
const EC_METHOD *EC_GFp_nistp256_method(void)
ec_GFp_nistp256_group_set_curve,
ec_GFp_simple_group_get_curve,
ec_GFp_simple_group_get_degree,
+ ec_group_simple_order_bits,
ec_GFp_simple_group_check_discriminant,
ec_GFp_simple_point_init,
ec_GFp_simple_point_finish,
0 /* field_div */ ,
0 /* field_encode */ ,
0 /* field_decode */ ,
- 0 /* field_set_to_one */
+ 0, /* field_set_to_one */
+ ec_key_simple_priv2oct,
+ ec_key_simple_oct2priv,
+ 0, /* set private */
+ ec_key_simple_generate_key,
+ ec_key_simple_check_key,
+ ec_key_simple_generate_public_key,
+ 0, /* keycopy */
+ 0, /* keyfinish */
+ ecdh_simple_compute_key
};
return &ret;
static NISTP256_PRE_COMP *nistp256_pre_comp_new()
{
- NISTP256_PRE_COMP *ret = NULL;
- ret = OPENSSL_malloc(sizeof(*ret));
+ NISTP256_PRE_COMP *ret = OPENSSL_zalloc(sizeof(*ret));
+
if (ret == NULL) {
ECerr(EC_F_NISTP256_PRE_COMP_NEW, ERR_R_MALLOC_FAILURE);
return ret;
}
- memset(ret->g_pre_comp, 0, sizeof(ret->g_pre_comp));
+
ret->references = 1;
+
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ ECerr(EC_F_NISTP256_PRE_COMP_NEW, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(ret);
+ return NULL;
+ }
return ret;
}
NISTP256_PRE_COMP *EC_nistp256_pre_comp_dup(NISTP256_PRE_COMP *p)
{
+ int i;
if (p != NULL)
- CRYPTO_add(&p->references, 1, CRYPTO_LOCK_EC_PRE_COMP);
+ CRYPTO_UP_REF(&p->references, &i, p->lock);
return p;
}
void EC_nistp256_pre_comp_free(NISTP256_PRE_COMP *pre)
{
- if (pre == NULL
- || CRYPTO_add(&pre->references, -1, CRYPTO_LOCK_EC_PRE_COMP) > 0)
+ int i;
+
+ if (pre == NULL)
return;
+
+ CRYPTO_DOWN_REF(&pre->references, &i, pre->lock);
+ REF_PRINT_COUNT("EC_nistp256", x);
+ if (i > 0)
+ return;
+ REF_ASSERT_ISNT(i < 0);
+
+ CRYPTO_THREAD_lock_free(pre->lock);
OPENSSL_free(pre);
}
if ((ctx = new_ctx = BN_CTX_new()) == NULL)
return 0;
BN_CTX_start(ctx);
- if (((curve_p = BN_CTX_get(ctx)) == NULL) ||
- ((curve_a = BN_CTX_get(ctx)) == NULL) ||
- ((curve_b = BN_CTX_get(ctx)) == NULL))
+ curve_p = BN_CTX_get(ctx);
+ curve_a = BN_CTX_get(ctx);
+ curve_b = BN_CTX_get(ctx);
+ if (curve_b == NULL)
goto err;
BN_bin2bn(nistp256_curve_params[0], sizeof(felem_bytearray), curve_p);
BN_bin2bn(nistp256_curve_params[1], sizeof(felem_bytearray), curve_a);
sizeof(smallfelem),
tmp_smallfelems,
(void (*)(void *))smallfelem_one,
- (int (*)(const void *))
smallfelem_is_zero_int,
(void (*)(void *, const void *))
smallfelem_assign,
if ((ctx = new_ctx = BN_CTX_new()) == NULL)
return 0;
BN_CTX_start(ctx);
- if (((x = BN_CTX_get(ctx)) == NULL) ||
- ((y = BN_CTX_get(ctx)) == NULL) ||
- ((z = BN_CTX_get(ctx)) == NULL) ||
- ((tmp_scalar = BN_CTX_get(ctx)) == NULL))
+ x = BN_CTX_get(ctx);
+ y = BN_CTX_get(ctx);
+ z = BN_CTX_get(ctx);
+ tmp_scalar = BN_CTX_get(ctx);
+ if (tmp_scalar == NULL)
goto err;
if (scalar != NULL) {
if ((ctx = new_ctx = BN_CTX_new()) == NULL)
return 0;
BN_CTX_start(ctx);
- if (((x = BN_CTX_get(ctx)) == NULL) || ((y = BN_CTX_get(ctx)) == NULL))
+ x = BN_CTX_get(ctx);
+ y = BN_CTX_get(ctx);
+ if (y == NULL)
goto err;
/* get the generator */
if (group->generator == NULL)
{
return HAVEPRECOMP(group, nistp256);
}
-#else
-static void *dummy = &dummy;
#endif
projects / openssl.git / blobdiff