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36 lines
805 B
C++
36 lines
805 B
C++
/*
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* Copyright (c) 2023, stelar7 <dudedbz@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ByteBuffer.h>
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namespace Crypto::AEAD {
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class ChaCha20Poly1305 {
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public:
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explicit ChaCha20Poly1305(ReadonlyBytes key, ReadonlyBytes nonce)
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{
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m_key = MUST(ByteBuffer::copy(key));
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m_nonce = MUST(ByteBuffer::copy(nonce));
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}
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ErrorOr<ByteBuffer> encrypt(ReadonlyBytes aad, ReadonlyBytes plaintext);
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ErrorOr<ByteBuffer> decrypt(ReadonlyBytes aad, ReadonlyBytes ciphertext);
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ErrorOr<ByteBuffer> poly1305_key();
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static bool verify_tag(ReadonlyBytes encrypted, ReadonlyBytes decrypted);
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private:
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u8 pad_to_16(ReadonlyBytes data)
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{
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return 16 - (data.size() % 16);
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}
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ByteBuffer m_key;
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ByteBuffer m_nonce;
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};
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}
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