mirror of
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ea1128e94e
These functions are part of the public API but we don't have tests covering their usage. They are actually implemented as macros and the absence of tests has caused them to fall out-of-sync with the latest changes to ASN1 related functions and cause compilation warnings. @@ Note: This commit limits to ECPKParameters as a type. Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/16355)
429 lines
14 KiB
C
429 lines
14 KiB
C
/*
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* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* Low level APIs are deprecated for public use, but still ok for internal use.
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*/
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#include "internal/deprecated.h"
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#include "internal/nelem.h"
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#include "testutil.h"
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#include <openssl/ec.h>
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#include "ec_local.h"
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#include <openssl/objects.h>
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static size_t crv_len = 0;
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static EC_builtin_curve *curves = NULL;
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/* sanity checks field_inv function pointer in EC_METHOD */
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static int group_field_tests(const EC_GROUP *group, BN_CTX *ctx)
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{
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BIGNUM *a = NULL, *b = NULL, *c = NULL;
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int ret = 0;
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if (group->meth->field_inv == NULL || group->meth->field_mul == NULL)
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return 1;
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BN_CTX_start(ctx);
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a = BN_CTX_get(ctx);
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b = BN_CTX_get(ctx);
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if (!TEST_ptr(c = BN_CTX_get(ctx))
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/* 1/1 = 1 */
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|| !TEST_true(group->meth->field_inv(group, b, BN_value_one(), ctx))
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|| !TEST_true(BN_is_one(b))
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/* (1/a)*a = 1 */
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|| !TEST_true(BN_rand(a, BN_num_bits(group->field) - 1,
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BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY))
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|| !TEST_true(group->meth->field_inv(group, b, a, ctx))
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|| (group->meth->field_encode &&
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!TEST_true(group->meth->field_encode(group, a, a, ctx)))
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|| (group->meth->field_encode &&
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!TEST_true(group->meth->field_encode(group, b, b, ctx)))
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|| !TEST_true(group->meth->field_mul(group, c, a, b, ctx))
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|| (group->meth->field_decode &&
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!TEST_true(group->meth->field_decode(group, c, c, ctx)))
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|| !TEST_true(BN_is_one(c)))
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goto err;
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/* 1/0 = error */
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BN_zero(a);
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if (!TEST_false(group->meth->field_inv(group, b, a, ctx))
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|| !TEST_true(ERR_GET_LIB(ERR_peek_last_error()) == ERR_LIB_EC)
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|| !TEST_true(ERR_GET_REASON(ERR_peek_last_error()) ==
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EC_R_CANNOT_INVERT)
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/* 1/p = error */
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|| !TEST_false(group->meth->field_inv(group, b, group->field, ctx))
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|| !TEST_true(ERR_GET_LIB(ERR_peek_last_error()) == ERR_LIB_EC)
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|| !TEST_true(ERR_GET_REASON(ERR_peek_last_error()) ==
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EC_R_CANNOT_INVERT))
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goto err;
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ERR_clear_error();
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ret = 1;
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err:
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BN_CTX_end(ctx);
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return ret;
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}
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/* wrapper for group_field_tests for explicit curve params and EC_METHOD */
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static int field_tests(const EC_METHOD *meth, const unsigned char *params,
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int len)
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{
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BN_CTX *ctx = NULL;
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BIGNUM *p = NULL, *a = NULL, *b = NULL;
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EC_GROUP *group = NULL;
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int ret = 0;
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if (!TEST_ptr(ctx = BN_CTX_new()))
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return 0;
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BN_CTX_start(ctx);
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p = BN_CTX_get(ctx);
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a = BN_CTX_get(ctx);
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if (!TEST_ptr(b = BN_CTX_get(ctx))
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|| !TEST_ptr(group = EC_GROUP_new(meth))
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|| !TEST_true(BN_bin2bn(params, len, p))
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|| !TEST_true(BN_bin2bn(params + len, len, a))
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|| !TEST_true(BN_bin2bn(params + 2 * len, len, b))
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|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
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|| !group_field_tests(group, ctx))
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goto err;
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ret = 1;
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err:
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BN_CTX_end(ctx);
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BN_CTX_free(ctx);
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if (group != NULL)
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EC_GROUP_free(group);
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return ret;
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}
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/* NIST prime curve P-256 */
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static const unsigned char params_p256[] = {
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/* p */
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0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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/* a */
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0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
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/* b */
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0x5A, 0xC6, 0x35, 0xD8, 0xAA, 0x3A, 0x93, 0xE7, 0xB3, 0xEB, 0xBD, 0x55,
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0x76, 0x98, 0x86, 0xBC, 0x65, 0x1D, 0x06, 0xB0, 0xCC, 0x53, 0xB0, 0xF6,
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0x3B, 0xCE, 0x3C, 0x3E, 0x27, 0xD2, 0x60, 0x4B
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};
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#ifndef OPENSSL_NO_EC2M
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/* NIST binary curve B-283 */
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static const unsigned char params_b283[] = {
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/* p */
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0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0xA1,
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/* a */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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/* b */
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0x02, 0x7B, 0x68, 0x0A, 0xC8, 0xB8, 0x59, 0x6D, 0xA5, 0xA4, 0xAF, 0x8A,
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0x19, 0xA0, 0x30, 0x3F, 0xCA, 0x97, 0xFD, 0x76, 0x45, 0x30, 0x9F, 0xA2,
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0xA5, 0x81, 0x48, 0x5A, 0xF6, 0x26, 0x3E, 0x31, 0x3B, 0x79, 0xA2, 0xF5
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};
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#endif
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/* test EC_GFp_simple_method directly */
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static int field_tests_ecp_simple(void)
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{
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TEST_info("Testing EC_GFp_simple_method()\n");
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return field_tests(EC_GFp_simple_method(), params_p256,
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sizeof(params_p256) / 3);
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}
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/* test EC_GFp_mont_method directly */
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static int field_tests_ecp_mont(void)
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{
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TEST_info("Testing EC_GFp_mont_method()\n");
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return field_tests(EC_GFp_mont_method(), params_p256,
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sizeof(params_p256) / 3);
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}
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#ifndef OPENSSL_NO_EC2M
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/* test EC_GF2m_simple_method directly */
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static int field_tests_ec2_simple(void)
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{
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TEST_info("Testing EC_GF2m_simple_method()\n");
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return field_tests(EC_GF2m_simple_method(), params_b283,
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sizeof(params_b283) / 3);
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}
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#endif
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/* test default method for a named curve */
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static int field_tests_default(int n)
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{
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BN_CTX *ctx = NULL;
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EC_GROUP *group = NULL;
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int nid = curves[n].nid;
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int ret = 0;
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TEST_info("Testing curve %s\n", OBJ_nid2sn(nid));
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if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))
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|| !TEST_ptr(ctx = BN_CTX_new())
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|| !group_field_tests(group, ctx))
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goto err;
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ret = 1;
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err:
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if (group != NULL)
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EC_GROUP_free(group);
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if (ctx != NULL)
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BN_CTX_free(ctx);
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return ret;
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}
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#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
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/*
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* Tests a point known to cause an incorrect underflow in an old version of
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* ecp_nist521.c
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*/
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static int underflow_test(void)
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{
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BN_CTX *ctx = NULL;
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EC_GROUP *grp = NULL;
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EC_POINT *P = NULL, *Q = NULL, *R = NULL;
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BIGNUM *x1 = NULL, *y1 = NULL, *z1 = NULL, *x2 = NULL, *y2 = NULL;
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BIGNUM *k = NULL;
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int testresult = 0;
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const char *x1str =
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"1534f0077fffffe87e9adcfe000000000000000000003e05a21d2400002e031b1f4"
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"b80000c6fafa4f3c1288798d624a247b5e2ffffffffffffffefe099241900004";
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const char *p521m1 =
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"1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
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"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe";
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ctx = BN_CTX_new();
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if (!TEST_ptr(ctx))
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return 0;
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BN_CTX_start(ctx);
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x1 = BN_CTX_get(ctx);
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y1 = BN_CTX_get(ctx);
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z1 = BN_CTX_get(ctx);
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x2 = BN_CTX_get(ctx);
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y2 = BN_CTX_get(ctx);
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k = BN_CTX_get(ctx);
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if (!TEST_ptr(k))
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goto err;
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grp = EC_GROUP_new_by_curve_name(NID_secp521r1);
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P = EC_POINT_new(grp);
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Q = EC_POINT_new(grp);
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R = EC_POINT_new(grp);
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if (!TEST_ptr(grp) || !TEST_ptr(P) || !TEST_ptr(Q) || !TEST_ptr(R))
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goto err;
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if (!TEST_int_gt(BN_hex2bn(&x1, x1str), 0)
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|| !TEST_int_gt(BN_hex2bn(&y1, p521m1), 0)
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|| !TEST_int_gt(BN_hex2bn(&z1, p521m1), 0)
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|| !TEST_int_gt(BN_hex2bn(&k, "02"), 0)
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|| !TEST_true(ossl_ec_GFp_simple_set_Jprojective_coordinates_GFp(grp, P, x1,
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y1, z1, ctx))
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|| !TEST_true(EC_POINT_mul(grp, Q, NULL, P, k, ctx))
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|| !TEST_true(EC_POINT_get_affine_coordinates(grp, Q, x1, y1, ctx))
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|| !TEST_true(EC_POINT_dbl(grp, R, P, ctx))
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|| !TEST_true(EC_POINT_get_affine_coordinates(grp, R, x2, y2, ctx)))
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goto err;
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if (!TEST_int_eq(BN_cmp(x1, x2), 0)
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|| !TEST_int_eq(BN_cmp(y1, y2), 0))
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goto err;
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testresult = 1;
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err:
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BN_CTX_end(ctx);
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EC_POINT_free(P);
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EC_POINT_free(Q);
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EC_POINT_free(R);
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EC_GROUP_free(grp);
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BN_CTX_free(ctx);
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return testresult;
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}
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#endif
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/*
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* Tests behavior of the decoded_from_explicit_params flag and API
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*/
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static int decoded_flag_test(void)
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{
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EC_GROUP *grp;
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EC_GROUP *grp_copy = NULL;
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ECPARAMETERS *ecparams = NULL;
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ECPKPARAMETERS *ecpkparams = NULL;
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EC_KEY *key = NULL;
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unsigned char *encodedparams = NULL;
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const unsigned char *encp;
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int encodedlen;
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int testresult = 0;
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/* Test EC_GROUP_new not setting the flag */
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grp = EC_GROUP_new(EC_GFp_simple_method());
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if (!TEST_ptr(grp)
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|| !TEST_int_eq(grp->decoded_from_explicit_params, 0))
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goto err;
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EC_GROUP_free(grp);
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/* Test EC_GROUP_new_by_curve_name not setting the flag */
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grp = EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1);
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if (!TEST_ptr(grp)
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|| !TEST_int_eq(grp->decoded_from_explicit_params, 0))
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goto err;
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/* Test EC_GROUP_new_from_ecparameters not setting the flag */
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if (!TEST_ptr(ecparams = EC_GROUP_get_ecparameters(grp, NULL))
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|| !TEST_ptr(grp_copy = EC_GROUP_new_from_ecparameters(ecparams))
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|| !TEST_int_eq(grp_copy->decoded_from_explicit_params, 0))
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goto err;
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EC_GROUP_free(grp_copy);
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grp_copy = NULL;
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ECPARAMETERS_free(ecparams);
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ecparams = NULL;
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/* Test EC_GROUP_new_from_ecpkparameters not setting the flag */
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if (!TEST_int_eq(EC_GROUP_get_asn1_flag(grp), OPENSSL_EC_NAMED_CURVE)
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|| !TEST_ptr(ecpkparams = EC_GROUP_get_ecpkparameters(grp, NULL))
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|| !TEST_ptr(grp_copy = EC_GROUP_new_from_ecpkparameters(ecpkparams))
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|| !TEST_int_eq(grp_copy->decoded_from_explicit_params, 0)
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|| !TEST_ptr(key = EC_KEY_new())
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/* Test EC_KEY_decoded_from_explicit_params on key without a group */
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|| !TEST_int_eq(EC_KEY_decoded_from_explicit_params(key), -1)
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|| !TEST_int_eq(EC_KEY_set_group(key, grp_copy), 1)
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/* Test EC_KEY_decoded_from_explicit_params negative case */
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|| !TEST_int_eq(EC_KEY_decoded_from_explicit_params(key), 0))
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goto err;
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EC_GROUP_free(grp_copy);
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grp_copy = NULL;
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ECPKPARAMETERS_free(ecpkparams);
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ecpkparams = NULL;
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/* Test d2i_ECPKParameters with named params not setting the flag */
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if (!TEST_int_gt(encodedlen = i2d_ECPKParameters(grp, &encodedparams), 0)
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|| !TEST_ptr(encp = encodedparams)
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|| !TEST_ptr(grp_copy = d2i_ECPKParameters(NULL, &encp, encodedlen))
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|| !TEST_int_eq(grp_copy->decoded_from_explicit_params, 0))
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goto err;
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EC_GROUP_free(grp_copy);
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grp_copy = NULL;
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OPENSSL_free(encodedparams);
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encodedparams = NULL;
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/* Asn1 flag stays set to explicit with EC_GROUP_new_from_ecpkparameters */
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EC_GROUP_set_asn1_flag(grp, OPENSSL_EC_EXPLICIT_CURVE);
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if (!TEST_ptr(ecpkparams = EC_GROUP_get_ecpkparameters(grp, NULL))
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|| !TEST_ptr(grp_copy = EC_GROUP_new_from_ecpkparameters(ecpkparams))
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|| !TEST_int_eq(EC_GROUP_get_asn1_flag(grp_copy), OPENSSL_EC_EXPLICIT_CURVE)
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|| !TEST_int_eq(grp_copy->decoded_from_explicit_params, 0))
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goto err;
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EC_GROUP_free(grp_copy);
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grp_copy = NULL;
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/* Test d2i_ECPKParameters with explicit params setting the flag */
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if (!TEST_int_gt(encodedlen = i2d_ECPKParameters(grp, &encodedparams), 0)
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|| !TEST_ptr(encp = encodedparams)
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|| !TEST_ptr(grp_copy = d2i_ECPKParameters(NULL, &encp, encodedlen))
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|| !TEST_int_eq(EC_GROUP_get_asn1_flag(grp_copy), OPENSSL_EC_EXPLICIT_CURVE)
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|| !TEST_int_eq(grp_copy->decoded_from_explicit_params, 1)
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|| !TEST_int_eq(EC_KEY_set_group(key, grp_copy), 1)
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/* Test EC_KEY_decoded_from_explicit_params positive case */
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|| !TEST_int_eq(EC_KEY_decoded_from_explicit_params(key), 1))
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goto err;
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testresult = 1;
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err:
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EC_KEY_free(key);
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EC_GROUP_free(grp);
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EC_GROUP_free(grp_copy);
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ECPARAMETERS_free(ecparams);
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ECPKPARAMETERS_free(ecpkparams);
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OPENSSL_free(encodedparams);
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return testresult;
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}
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static
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int ecpkparams_i2d2i_test(int n)
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{
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EC_GROUP *g1 = NULL, *g2 = NULL;
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FILE *fp = NULL;
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int nid = curves[n].nid;
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int testresult = 0;
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/* create group */
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if (!TEST_ptr(g1 = EC_GROUP_new_by_curve_name(nid)))
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goto end;
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/* encode params to file */
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if (!TEST_ptr(fp = fopen("params.der", "wb"))
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|| !TEST_true(i2d_ECPKParameters_fp(fp, g1)))
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goto end;
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/* flush and close file */
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if (!TEST_int_eq(fclose(fp), 0)) {
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fp = NULL;
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goto end;
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}
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fp = NULL;
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/* decode params from file */
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if (!TEST_ptr(fp = fopen("params.der", "rb"))
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|| !TEST_ptr(g2 = d2i_ECPKParameters_fp(fp, NULL)))
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goto end;
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testresult = 1; /* PASS */
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end:
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if (fp != NULL)
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fclose(fp);
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EC_GROUP_free(g1);
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EC_GROUP_free(g2);
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return testresult;
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}
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int setup_tests(void)
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{
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crv_len = EC_get_builtin_curves(NULL, 0);
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if (!TEST_ptr(curves = OPENSSL_malloc(sizeof(*curves) * crv_len))
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|| !TEST_true(EC_get_builtin_curves(curves, crv_len)))
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return 0;
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ADD_TEST(field_tests_ecp_simple);
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ADD_TEST(field_tests_ecp_mont);
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#ifndef OPENSSL_NO_EC2M
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ADD_TEST(field_tests_ec2_simple);
|
|
#endif
|
|
ADD_ALL_TESTS(field_tests_default, crv_len);
|
|
#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
|
|
ADD_TEST(underflow_test);
|
|
#endif
|
|
ADD_TEST(decoded_flag_test);
|
|
ADD_ALL_TESTS(ecpkparams_i2d2i_test, crv_len);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void cleanup_tests(void)
|
|
{
|
|
OPENSSL_free(curves);
|
|
}
|