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/** @file
* IPRT - Crypto - Symmetric Ciphers.
*/
/*
* Copyright (C) 2018-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef IPRT_INCLUDED_crypto_cipher_h
#define IPRT_INCLUDED_crypto_cipher_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/asn1.h>
RT_C_DECLS_BEGIN
struct RTCRX509SUBJECTPUBLICKEYINFO;
/** @defgroup grp_rt_crcipher RTCrCipher - Symmetric Ciphers
* @ingroup grp_rt_crypto
* @{
*/
/**
* A symmetric cipher handle.
*
* @remarks In OpenSSL terms this corresponds to a EVP_CIPHER, while in Microsoft
* terms it is an algorithm handle. The latter is why a handle was
* choosen rather than constant descriptor structure pointer. */
typedef struct RTCRCIPHERINT *RTCRCIPHER;
/** Pointer to a symmetric cipher handle. */
typedef RTCRCIPHER *PRTCRCIPHER;
/** Nil symmetric cipher handle. */
#define NIL_RTCRCIPHER ((RTCRCIPHER)0)
/**
* Symmetric cipher types.
*
* @note Only add new types at the end, existing values must be stable.
*/
typedef enum RTCRCIPHERTYPE
{
/** Invalid zero value. */
RTCRCIPHERTYPE_INVALID = 0,
/** XTS-AES-128 (NIST SP 800-38E). */
RTCRCIPHERTYPE_XTS_AES_128,
/** XTS-AES-256 (NIST SP 800-38E). */
RTCRCIPHERTYPE_XTS_AES_256,
/** End of valid symmetric cipher types. */
RTCRCIPHERTYPE_END,
/** Make sure the type is a 32-bit one. */
RTCRCIPHERTYPE_32BIT_HACK = 0x7fffffff
} RTCRCIPHERTYPE;
RTDECL(int) RTCrCipherOpenByType(PRTCRCIPHER phCipher, RTCRCIPHERTYPE enmType, uint32_t fFlags);
RTDECL(uint32_t) RTCrCipherRetain(RTCRCIPHER hCipher);
RTDECL(uint32_t) RTCrCipherRelease(RTCRCIPHER hCipher);
RTDECL(uint32_t) RTCrCipherGetKeyLength(RTCRCIPHER hCipher);
RTDECL(uint32_t) RTCrCipherGetInitializationVectorLength(RTCRCIPHER hCipher);
RTDECL(uint32_t) RTCrCipherGetBlockSize(RTCRCIPHER hCipher);
RTDECL(int) RTCrCipherEncrypt(RTCRCIPHER hCipher, void const *pvKey, size_t cbKey,
void const *pvInitVector, size_t cbInitVector,
void const *pvPlainText, size_t cbPlainText,
void *pvEncrypted, size_t cbEncrypted, size_t *pcbEncrypted);
RTDECL(int) RTCrCipherDecrypt(RTCRCIPHER hCipher, void const *pvKey, size_t cbKey,
void const *pvInitVector, size_t cbInitVector,
void const *pvEncrypted, size_t cbEncrypted,
void *pvPlainText, size_t cbPlainText, size_t *pcbPlainText);
/** @} */
RT_C_DECLS_END
#endif /* !IPRT_INCLUDED_crypto_cipher_h */
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