mirror of https://github.com/openssl/openssl
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
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* Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* https://www.openssl.org/source/license.html
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* or in the file LICENSE in the source distribution.
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*/
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#include <openssl/decoder.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#include "fuzzer.h"
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static ASN1_PCTX *pctx;
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int FuzzerInitialize(int *argc, char ***argv)
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{
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FuzzerSetRand();
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OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS
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| OPENSSL_INIT_ADD_ALL_CIPHERS
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| OPENSSL_INIT_ADD_ALL_DIGESTS, NULL);
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pctx = ASN1_PCTX_new();
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ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT
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| ASN1_PCTX_FLAGS_SHOW_SEQUENCE
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| ASN1_PCTX_FLAGS_SHOW_SSOF
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| ASN1_PCTX_FLAGS_SHOW_TYPE
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| ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME);
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ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT
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| ASN1_STRFLGS_SHOW_TYPE
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| ASN1_STRFLGS_DUMP_ALL);
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ERR_clear_error();
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CRYPTO_free_ex_index(0, -1);
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return 1;
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}
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int FuzzerTestOneInput(const uint8_t *buf, size_t len)
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{
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OSSL_DECODER_CTX *dctx;
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *ctx = NULL;
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BIO *bio;
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bio = BIO_new(BIO_s_null());
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dctx = OSSL_DECODER_CTX_new_for_pkey(&pkey, NULL, NULL, NULL, 0, NULL,
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NULL);
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if (dctx == NULL) {
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return 0;
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}
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if (OSSL_DECODER_from_data(dctx, &buf, &len)) {
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EVP_PKEY *pkey2;
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EVP_PKEY_print_public(bio, pkey, 1, pctx);
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EVP_PKEY_print_private(bio, pkey, 1, pctx);
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EVP_PKEY_print_params(bio, pkey, 1, pctx);
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pkey2 = EVP_PKEY_dup(pkey);
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OPENSSL_assert(pkey2 != NULL);
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EVP_PKEY_eq(pkey, pkey2);
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EVP_PKEY_free(pkey2);
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ctx = EVP_PKEY_CTX_new(pkey, NULL);
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/*
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* Param check will take too long time on large DH parameters.
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* Skip it.
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*/
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if ((!EVP_PKEY_is_a(pkey, "DH") && !EVP_PKEY_is_a(pkey, "DHX"))
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|| EVP_PKEY_get_bits(pkey) <= 8192)
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EVP_PKEY_param_check(ctx);
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EVP_PKEY_public_check(ctx);
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/* Private and pairwise checks are unbounded, skip for large keys. */
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if (EVP_PKEY_get_bits(pkey) <= 16384) {
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EVP_PKEY_private_check(ctx);
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EVP_PKEY_pairwise_check(ctx);
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}
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OPENSSL_assert(ctx != NULL);
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EVP_PKEY_CTX_free(ctx);
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EVP_PKEY_free(pkey);
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}
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OSSL_DECODER_CTX_free(dctx);
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BIO_free(bio);
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ERR_clear_error();
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return 0;
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}
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void FuzzerCleanup(void)
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{
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ASN1_PCTX_free(pctx);
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FuzzerClearRand();
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}
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