/**************************************************************************/
/* sha256_digest.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
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/**************************************************************************/
#pragma once
#include "core/templates/hashfuncs.h"
#include "core/templates/local_vector.h"
#include <CommonCrypto/CommonDigest.h>
#include <simd/simd.h>
#include <zlib.h>
struct SHA256Digest {
unsigned char data[CC_SHA256_DIGEST_LENGTH];
static constexpr size_t serialized_size() { return CC_SHA256_DIGEST_LENGTH; }
uint32_t hash() const {
uint32_t c = crc32(0, data, CC_SHA256_DIGEST_LENGTH);
return c;
}
SHA256Digest() {
bzero(data, CC_SHA256_DIGEST_LENGTH);
}
SHA256Digest(const char *p_hash) {
memcpy(data, p_hash, CC_SHA256_DIGEST_LENGTH);
}
SHA256Digest(const char *p_data, size_t p_length) {
CC_SHA256(p_data, (CC_LONG)p_length, data);
}
_FORCE_INLINE_ uint32_t short_sha() const {
return __builtin_bswap32(*(uint32_t *)&data[0]);
}
LocalVector<uint8_t> serialize() const {
LocalVector<uint8_t> result;
result.resize(CC_SHA256_DIGEST_LENGTH);
memcpy(result.ptr(), data, CC_SHA256_DIGEST_LENGTH);
return result;
}
static SHA256Digest deserialize(LocalVector<uint8_t> p_ser) {
return SHA256Digest((const char *)p_ser.ptr());
}
};
template <>
struct HashMapComparatorDefault<SHA256Digest> {
static bool compare(const SHA256Digest &p_lhs, const SHA256Digest &p_rhs) {
return memcmp(p_lhs.data, p_rhs.data, CC_SHA256_DIGEST_LENGTH) == 0;
}
};