-/* crypto/ec/ecp_nist.c */
/*
* Written by Nils Larsch for the OpenSSL project.
*/
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
* and contributed to the OpenSSL project.
*/
-#define OPENSSL_FIPSAPI
-
#include <limits.h>
#include <openssl/err.h>
#include "ec_lcl.h"
const EC_METHOD *EC_GFp_nist_method(void)
- {
- static const EC_METHOD ret = {
- EC_FLAGS_DEFAULT_OCT,
- NID_X9_62_prime_field,
- ec_GFp_simple_group_init,
- ec_GFp_simple_group_finish,
- ec_GFp_simple_group_clear_finish,
- ec_GFp_nist_group_copy,
- ec_GFp_nist_group_set_curve,
- ec_GFp_simple_group_get_curve,
- ec_GFp_simple_group_get_degree,
- ec_GFp_simple_group_check_discriminant,
- ec_GFp_simple_point_init,
- ec_GFp_simple_point_finish,
- ec_GFp_simple_point_clear_finish,
- ec_GFp_simple_point_copy,
- ec_GFp_simple_point_set_to_infinity,
- ec_GFp_simple_set_Jprojective_coordinates_GFp,
- ec_GFp_simple_get_Jprojective_coordinates_GFp,
- ec_GFp_simple_point_set_affine_coordinates,
- ec_GFp_simple_point_get_affine_coordinates,
- 0,0,0,
- ec_GFp_simple_add,
- ec_GFp_simple_dbl,
- ec_GFp_simple_invert,
- ec_GFp_simple_is_at_infinity,
- ec_GFp_simple_is_on_curve,
- ec_GFp_simple_cmp,
- ec_GFp_simple_make_affine,
- ec_GFp_simple_points_make_affine,
- 0 /* mul */,
- 0 /* precompute_mult */,
- 0 /* have_precompute_mult */,
- ec_GFp_nist_field_mul,
- ec_GFp_nist_field_sqr,
- 0 /* field_div */,
- 0 /* field_encode */,
- 0 /* field_decode */,
- 0 /* field_set_to_one */ };
-
- return &ret;
- }
+{
+ static const EC_METHOD ret = {
+ EC_FLAGS_DEFAULT_OCT,
+ NID_X9_62_prime_field,
+ ec_GFp_simple_group_init,
+ ec_GFp_simple_group_finish,
+ ec_GFp_simple_group_clear_finish,
+ ec_GFp_nist_group_copy,
+ ec_GFp_nist_group_set_curve,
+ ec_GFp_simple_group_get_curve,
+ ec_GFp_simple_group_get_degree,
+ 0, /* group_order_bits */
+ ec_GFp_simple_group_check_discriminant,
+ ec_GFp_simple_point_init,
+ ec_GFp_simple_point_finish,
+ ec_GFp_simple_point_clear_finish,
+ ec_GFp_simple_point_copy,
+ ec_GFp_simple_point_set_to_infinity,
+ ec_GFp_simple_set_Jprojective_coordinates_GFp,
+ ec_GFp_simple_get_Jprojective_coordinates_GFp,
+ ec_GFp_simple_point_set_affine_coordinates,
+ ec_GFp_simple_point_get_affine_coordinates,
+ 0, 0, 0,
+ ec_GFp_simple_add,
+ ec_GFp_simple_dbl,
+ ec_GFp_simple_invert,
+ ec_GFp_simple_is_at_infinity,
+ ec_GFp_simple_is_on_curve,
+ ec_GFp_simple_cmp,
+ ec_GFp_simple_make_affine,
+ ec_GFp_simple_points_make_affine,
+ 0 /* mul */ ,
+ 0 /* precompute_mult */ ,
+ 0 /* have_precompute_mult */ ,
+ ec_GFp_nist_field_mul,
+ ec_GFp_nist_field_sqr,
+ 0 /* field_div */ ,
+ 0 /* field_encode */ ,
+ 0 /* field_decode */ ,
+ 0 /* field_set_to_one */
+ };
+
+ return &ret;
+}
int ec_GFp_nist_group_copy(EC_GROUP *dest, const EC_GROUP *src)
- {
- dest->field_mod_func = src->field_mod_func;
+{
+ dest->field_mod_func = src->field_mod_func;
- return ec_GFp_simple_group_copy(dest, src);
- }
+ return ec_GFp_simple_group_copy(dest, src);
+}
int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
- const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
- {
- int ret = 0;
- BN_CTX *new_ctx = NULL;
- BIGNUM *tmp_bn;
-
- if (ctx == NULL)
- if ((ctx = new_ctx = BN_CTX_new()) == NULL) return 0;
-
- BN_CTX_start(ctx);
- if ((tmp_bn = BN_CTX_get(ctx)) == NULL) goto err;
-
- if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
- group->field_mod_func = BN_nist_mod_192;
- else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
- group->field_mod_func = BN_nist_mod_224;
- else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
- group->field_mod_func = BN_nist_mod_256;
- else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
- group->field_mod_func = BN_nist_mod_384;
- else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
- group->field_mod_func = BN_nist_mod_521;
- else
- {
- ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
- goto err;
- }
-
- ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
+ const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
+{
+ int ret = 0;
+ BN_CTX *new_ctx = NULL;
+
+ if (ctx == NULL)
+ if ((ctx = new_ctx = BN_CTX_new()) == NULL)
+ return 0;
+
+ BN_CTX_start(ctx);
+
+ if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
+ group->field_mod_func = BN_nist_mod_192;
+ else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
+ group->field_mod_func = BN_nist_mod_224;
+ else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
+ group->field_mod_func = BN_nist_mod_256;
+ else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
+ group->field_mod_func = BN_nist_mod_384;
+ else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
+ group->field_mod_func = BN_nist_mod_521;
+ else {
+ ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
+ goto err;
+ }
+
+ ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
err:
- BN_CTX_end(ctx);
- if (new_ctx != NULL)
- BN_CTX_free(new_ctx);
- return ret;
- }
-
+ BN_CTX_end(ctx);
+ BN_CTX_free(new_ctx);
+ return ret;
+}
int ec_GFp_nist_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
- const BIGNUM *b, BN_CTX *ctx)
- {
- int ret=0;
- BN_CTX *ctx_new=NULL;
-
- if (!group || !r || !a || !b)
- {
- ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER);
- goto err;
- }
- if (!ctx)
- if ((ctx_new = ctx = BN_CTX_new()) == NULL) goto err;
-
- if (!BN_mul(r, a, b, ctx)) goto err;
- if (!group->field_mod_func(r, r, &group->field, ctx))
- goto err;
-
- ret=1;
-err:
- if (ctx_new)
- BN_CTX_free(ctx_new);
- return ret;
- }
-
+ const BIGNUM *b, BN_CTX *ctx)
+{
+ int ret = 0;
+ BN_CTX *ctx_new = NULL;
+
+ if (!group || !r || !a || !b) {
+ ECerr(EC_F_EC_GFP_NIST_FIELD_MUL, ERR_R_PASSED_NULL_PARAMETER);
+ goto err;
+ }
+ if (!ctx)
+ if ((ctx_new = ctx = BN_CTX_new()) == NULL)
+ goto err;
+
+ if (!BN_mul(r, a, b, ctx))
+ goto err;
+ if (!group->field_mod_func(r, r, group->field, ctx))
+ goto err;
+
+ ret = 1;
+ err:
+ BN_CTX_free(ctx_new);
+ return ret;
+}
int ec_GFp_nist_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a,
- BN_CTX *ctx)
- {
- int ret=0;
- BN_CTX *ctx_new=NULL;
-
- if (!group || !r || !a)
- {
- ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER);
- goto err;
- }
- if (!ctx)
- if ((ctx_new = ctx = BN_CTX_new()) == NULL) goto err;
-
- if (!BN_sqr(r, a, ctx)) goto err;
- if (!group->field_mod_func(r, r, &group->field, ctx))
- goto err;
-
- ret=1;
-err:
- if (ctx_new)
- BN_CTX_free(ctx_new);
- return ret;
- }
+ BN_CTX *ctx)
+{
+ int ret = 0;
+ BN_CTX *ctx_new = NULL;
+
+ if (!group || !r || !a) {
+ ECerr(EC_F_EC_GFP_NIST_FIELD_SQR, EC_R_PASSED_NULL_PARAMETER);
+ goto err;
+ }
+ if (!ctx)
+ if ((ctx_new = ctx = BN_CTX_new()) == NULL)
+ goto err;
+
+ if (!BN_sqr(r, a, ctx))
+ goto err;
+ if (!group->field_mod_func(r, r, group->field, ctx))
+ goto err;
+
+ ret = 1;
+ err:
+ BN_CTX_free(ctx_new);
+ return ret;
+}
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