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/*
* Copyright (c) 2020, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <LibCrypto/Hash/HashFunction.h>
namespace Crypto {
namespace Hash {
namespace SHA256Constants {
constexpr static u32 RoundConstants[64] {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
constexpr static u32 InitializationHashes[8] = {
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
};
}
namespace SHA384Constants {
constexpr static u64 InitializationHashes[8] = {
0xcbbb9d5dc1059ed8, 0x629a292a367cd507, 0x9159015a3070dd17, 0x152fecd8f70e5939,
0x67332667ffc00b31, 0x8eb44a8768581511, 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4
};
}
namespace SHA512Constants {
constexpr static u64 RoundConstants[80] {
0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc, 0x3956c25bf348b538,
0x59f111f1b605d019, 0x923f82a4af194f9b, 0xab1c5ed5da6d8118, 0xd807aa98a3030242, 0x12835b0145706fbe,
0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2, 0x72be5d74f27b896f, 0x80deb1fe3b1696b1, 0x9bdc06a725c71235,
0xc19bf174cf692694, 0xe49b69c19ef14ad2, 0xefbe4786384f25e3, 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,
0x2de92c6f592b0275, 0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5, 0x983e5152ee66dfab,
0xa831c66d2db43210, 0xb00327c898fb213f, 0xbf597fc7beef0ee4, 0xc6e00bf33da88fc2, 0xd5a79147930aa725,
0x06ca6351e003826f, 0x142929670a0e6e70, 0x27b70a8546d22ffc, 0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed,
0x53380d139d95b3df, 0x650a73548baf63de, 0x766a0abb3c77b2a8, 0x81c2c92e47edaee6, 0x92722c851482353b,
0xa2bfe8a14cf10364, 0xa81a664bbc423001, 0xc24b8b70d0f89791, 0xc76c51a30654be30, 0xd192e819d6ef5218,
0xd69906245565a910, 0xf40e35855771202a, 0x106aa07032bbd1b8, 0x19a4c116b8d2d0c8, 0x1e376c085141ab53,
0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8, 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, 0x5b9cca4f7763e373,
0x682e6ff3d6b2b8a3, 0x748f82ee5defb2fc, 0x78a5636f43172f60, 0x84c87814a1f0ab72, 0x8cc702081a6439ec,
0x90befffa23631e28, 0xa4506cebde82bde9, 0xbef9a3f7b2c67915, 0xc67178f2e372532b, 0xca273eceea26619c,
0xd186b8c721c0c207, 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178, 0x06f067aa72176fba, 0x0a637dc5a2c898a6,
0x113f9804bef90dae, 0x1b710b35131c471b, 0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc,
0x431d67c49c100d4c, 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
};
constexpr static u64 InitializationHashes[8] = {
0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179
};
}
template<size_t Bytes>
struct SHA2Digest {
u8 data[Bytes];
constexpr static size_t Size = Bytes;
const u8* immutable_data() const { return data; }
size_t data_length() const { return Bytes; }
};
// FIXME: I want template<size_t BlockSize> but the compiler gets confused
class SHA256 final : public HashFunction<512, SHA2Digest<256 / 8>> {
public:
using HashFunction::update;
SHA256()
{
reset();
}
virtual void update(const u8*, size_t) override;
virtual DigestType digest() override;
virtual DigestType peek() override;
inline static DigestType hash(const u8* data, size_t length)
{
SHA256 sha;
sha.update(data, length);
return sha.digest();
}
inline static DigestType hash(const ByteBuffer& buffer) { return hash(buffer.data(), buffer.size()); }
inline static DigestType hash(StringView buffer) { return hash((const u8*)buffer.characters_without_null_termination(), buffer.length()); }
virtual String class_name() const override
{
return String::formatted("SHA{}", DigestSize * 8);
}
inline virtual void reset() override
{
m_data_length = 0;
m_bit_length = 0;
for (size_t i = 0; i < 8; ++i)
m_state[i] = SHA256Constants::InitializationHashes[i];
}
private:
inline void transform(const u8*);
u8 m_data_buffer[BlockSize] {};
size_t m_data_length { 0 };
u64 m_bit_length { 0 };
u32 m_state[8];
constexpr static auto FinalBlockDataSize = BlockSize - 8;
constexpr static auto Rounds = 64;
};
class SHA384 final : public HashFunction<1024, SHA2Digest<384 / 8>> {
public:
using HashFunction::update;
SHA384()
{
reset();
}
virtual void update(const u8*, size_t) override;
virtual DigestType digest() override;
virtual DigestType peek() override;
inline static DigestType hash(const u8* data, size_t length)
{
SHA384 sha;
sha.update(data, length);
return sha.digest();
}
inline static DigestType hash(const ByteBuffer& buffer) { return hash(buffer.data(), buffer.size()); }
inline static DigestType hash(StringView buffer) { return hash((const u8*)buffer.characters_without_null_termination(), buffer.length()); }
virtual String class_name() const override
{
return String::formatted("SHA{}", DigestSize * 8);
}
inline virtual void reset() override
{
m_data_length = 0;
m_bit_length = 0;
for (size_t i = 0; i < 8; ++i)
m_state[i] = SHA384Constants::InitializationHashes[i];
}
private:
inline void transform(const u8*);
u8 m_data_buffer[BlockSize] {};
size_t m_data_length { 0 };
u64 m_bit_length { 0 };
u64 m_state[8];
constexpr static auto FinalBlockDataSize = BlockSize - 8;
constexpr static auto Rounds = 80;
};
class SHA512 final : public HashFunction<1024, SHA2Digest<512 / 8>> {
public:
using HashFunction::update;
SHA512()
{
reset();
}
virtual void update(const u8*, size_t) override;
virtual DigestType digest() override;
virtual DigestType peek() override;
inline static DigestType hash(const u8* data, size_t length)
{
SHA512 sha;
sha.update(data, length);
return sha.digest();
}
inline static DigestType hash(const ByteBuffer& buffer) { return hash(buffer.data(), buffer.size()); }
inline static DigestType hash(StringView buffer) { return hash((const u8*)buffer.characters_without_null_termination(), buffer.length()); }
virtual String class_name() const override
{
return String::formatted("SHA{}", DigestSize * 8);
}
inline virtual void reset() override
{
m_data_length = 0;
m_bit_length = 0;
for (size_t i = 0; i < 8; ++i)
m_state[i] = SHA512Constants::InitializationHashes[i];
}
private:
inline void transform(const u8*);
u8 m_data_buffer[BlockSize] {};
size_t m_data_length { 0 };
u64 m_bit_length { 0 };
u64 m_state[8];
constexpr static auto FinalBlockDataSize = BlockSize - 8;
constexpr static auto Rounds = 80;
};
}
}
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