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/*************************************************************************/
/* crypto_mbedtls.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef CRYPTO_MBEDTLS_H
#define CRYPTO_MBEDTLS_H
#include "core/crypto/crypto.h"
#include "core/io/resource.h"
#include <mbedtls/ctr_drbg.h>
#include <mbedtls/entropy.h>
#include <mbedtls/ssl.h>
class CryptoMbedTLS;
class SSLContextMbedTLS;
class CryptoKeyMbedTLS : public CryptoKey {
private:
mbedtls_pk_context pkey;
int locks = 0;
bool public_only = true;
public:
static CryptoKey *create();
static void make_default() { CryptoKey::_create = create; }
static void finalize() { CryptoKey::_create = nullptr; }
virtual Error load(String p_path, bool p_public_only);
virtual Error save(String p_path, bool p_public_only);
virtual String save_to_string(bool p_public_only);
virtual Error load_from_string(String p_string_key, bool p_public_only);
virtual bool is_public_only() const { return public_only; };
CryptoKeyMbedTLS() {
mbedtls_pk_init(&pkey);
locks = 0;
}
~CryptoKeyMbedTLS() {
mbedtls_pk_free(&pkey);
}
_FORCE_INLINE_ void lock() { locks++; }
_FORCE_INLINE_ void unlock() { locks--; }
friend class CryptoMbedTLS;
friend class SSLContextMbedTLS;
};
class X509CertificateMbedTLS : public X509Certificate {
private:
mbedtls_x509_crt cert;
int locks;
public:
static X509Certificate *create();
static void make_default() { X509Certificate::_create = create; }
static void finalize() { X509Certificate::_create = nullptr; }
virtual Error load(String p_path);
virtual Error load_from_memory(const uint8_t *p_buffer, int p_len);
virtual Error save(String p_path);
X509CertificateMbedTLS() {
mbedtls_x509_crt_init(&cert);
locks = 0;
}
~X509CertificateMbedTLS() {
mbedtls_x509_crt_free(&cert);
}
_FORCE_INLINE_ void lock() { locks++; }
_FORCE_INLINE_ void unlock() { locks--; }
friend class CryptoMbedTLS;
friend class SSLContextMbedTLS;
};
class HMACContextMbedTLS : public HMACContext {
private:
HashingContext::HashType hash_type;
int hash_len = 0;
void *ctx = nullptr;
public:
static HMACContext *create();
static void make_default() { HMACContext::_create = create; }
static void finalize() { HMACContext::_create = nullptr; }
static bool is_md_type_allowed(mbedtls_md_type_t p_md_type);
virtual Error start(HashingContext::HashType p_hash_type, PackedByteArray p_key);
virtual Error update(PackedByteArray p_data);
virtual PackedByteArray finish();
HMACContextMbedTLS() {}
};
class CryptoMbedTLS : public Crypto {
private:
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
static X509CertificateMbedTLS *default_certs;
public:
static Crypto *create();
static void initialize_crypto();
static void finalize_crypto();
static X509CertificateMbedTLS *get_default_certificates();
static void load_default_certificates(String p_path);
static mbedtls_md_type_t md_type_from_hashtype(HashingContext::HashType p_hash_type, int &r_size);
virtual PackedByteArray generate_random_bytes(int p_bytes);
virtual Ref<CryptoKey> generate_rsa(int p_bytes);
virtual Ref<X509Certificate> generate_self_signed_certificate(Ref<CryptoKey> p_key, String p_issuer_name, String p_not_before, String p_not_after);
virtual Vector<uint8_t> sign(HashingContext::HashType p_hash_type, Vector<uint8_t> p_hash, Ref<CryptoKey> p_key);
virtual bool verify(HashingContext::HashType p_hash_type, Vector<uint8_t> p_hash, Vector<uint8_t> p_signature, Ref<CryptoKey> p_key);
virtual Vector<uint8_t> encrypt(Ref<CryptoKey> p_key, Vector<uint8_t> p_plaintext);
virtual Vector<uint8_t> decrypt(Ref<CryptoKey> p_key, Vector<uint8_t> p_ciphertext);
CryptoMbedTLS();
~CryptoMbedTLS();
};
#endif // CRYPTO_MBEDTLS_H
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