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48 lines
1.5 KiB
48 lines
1.5 KiB
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <assert.h>
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#include <stdlib.h>
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#include <sodium.h>
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#include "fake_random.h"
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extern "C" int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size) {
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int initialized = sodium_init();
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assert(initialized >= 0);
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setup_fake_random(data, size);
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unsigned char key[crypto_secretbox_KEYBYTES];
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unsigned char nonce[crypto_secretbox_NONCEBYTES];
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// these use a deterministic generator
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crypto_secretbox_keygen(key);
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randombytes_buf(nonce, sizeof nonce);
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size_t ciphertext_len = crypto_secretbox_MACBYTES + size;
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unsigned char *ciphertext = (unsigned char *) malloc(ciphertext_len);
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crypto_secretbox_easy(ciphertext, data, size, nonce, key);
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unsigned char *decrypted = (unsigned char *) malloc(size);
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int err = crypto_secretbox_open_easy(decrypted, ciphertext, ciphertext_len, nonce, key);
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assert(err == 0);
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free((void *) ciphertext);
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free((void *) decrypted);
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return 0;
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}
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