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/** @file
* IPRT - Crypto - Symmetric Ciphers.
*/
/*
* Copyright (C) 2018-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#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 context */
typedef struct RTCRCIPHERCTXINT *RTCRCIPHERCTX;
/** Pointer to a symmetric cipher context */
typedef RTCRCIPHERCTX *PRTCRCIPHERCTX;
/** Nil symmetric cipher context */
#define NIL_RTCRCIPHERCTX ((RTCRCIPHERCTX)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,
/** GCM-AES-128. */
RTCRCIPHERTYPE_GCM_AES_128,
/** GCM-AES-256. */
RTCRCIPHERTYPE_GCM_AES_256,
/* CTR-AES-128 */
RTCRCIPHERTYPE_CTR_AES_128,
/* CTR-AES-256 */
RTCRCIPHERTYPE_CTR_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) RTCrCipherCtxFree(RTCRCIPHERCTX phCipherCtx);
RTDECL(int) RTCrCipherCtxEncryptInit(RTCRCIPHER hCipher, void const *pvKey, size_t cbKey,
void const *pvInitVector, size_t cbInitVector,
void const *pvAuthData, size_t cbAuthData,
PRTCRCIPHERCTX phCipherCtx);
RTDECL(int) RTCrCipherCtxEncryptProcess(RTCRCIPHERCTX hCipherCtx, void const *pvPlainText, size_t cbPlainText,
void *pvEncrypted, size_t cbEncrypted, size_t *pcbEncrypted);
RTDECL(int) RTCrCipherCtxEncryptFinish(RTCRCIPHERCTX hCipherCtx,
void *pvEncrypted, size_t *pcbEncrypted,
void *pvTag, size_t cbTag, size_t *pcbTag);
RTDECL(int) RTCrCipherCtxDecryptInit(RTCRCIPHER hCipher, void const *pvKey, size_t cbKey,
void const *pvInitVector, size_t cbInitVector,
void const *pvAuthData, size_t cbAuthData,
void *pvTag, size_t cbTag, PRTCRCIPHERCTX phCipherCtx);
RTDECL(int) RTCrCipherCtxDecryptProcess(RTCRCIPHERCTX hCipherCtx,
void const *pvEncrypted, size_t cbEncrypted,
void *pvPlainText, size_t cbPlainText, size_t *pcbPlainText);
RTDECL(int) RTCrCipherCtxDecryptFinish(RTCRCIPHERCTX hCipherCtx,
void *pvPlainText, size_t *pcbPlainText);
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);
RTDECL(int) RTCrCipherEncryptEx(RTCRCIPHER hCipher, void const *pvKey, size_t cbKey,
void const *pvInitVector, size_t cbInitVector,
void const *pvAuthData, size_t cbAuthData,
void const *pvPlainText, size_t cbPlainText,
void *pvEncrypted, size_t cbEncrypted, size_t *pcbEncrypted,
void *pvTag, size_t cbTag, size_t *pcbTag);
RTDECL(int) RTCrCipherDecryptEx(RTCRCIPHER hCipher, void const *pvKey, size_t cbKey,
void const *pvInitVector, size_t cbInitVector,
void const *pvAuthData, size_t cbAuthData,
void *pvTag, size_t cbTag,
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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