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45 lines
1.4 KiB
45 lines
1.4 KiB
/* |
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* Copyright (C) 2016 The Android Open Source Project |
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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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*/ |
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#ifndef NVRAM_CORE_CRYPTO_H_ |
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#define NVRAM_CORE_CRYPTO_H_ |
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extern "C" { |
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#include <stddef.h> |
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#include <stdint.h> |
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} // extern "C" |
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namespace nvram { |
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namespace crypto { |
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// Size of a SHA-256 digest in bytes. |
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constexpr size_t kSHA256DigestSize = 32; |
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// Computes the SHA-256 digest of the |data_size| input bytes stored at |data|. |
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// The digest is written to |digest|, which is a buffer of size |digest_size|. |
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// Note that |digest_size| doesn't have to match SHA-256's output size of 32 |
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// bytes. If it doesn't the digest is truncated or zero-padded as necessary. |
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// |
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// Returns true if the digest was computed successfully, false otherwise. |
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void SHA256(const uint8_t* data, |
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size_t data_size, |
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uint8_t* digest, |
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size_t digest_size); |
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} // namespace crypto |
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} // namespace nvram |
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#endif // NVRAM_CORE_CRYPTO_H_
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