primeec_eg.h

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/*
 * primeec_eg.h
 *
 * Header for Elliptic Curve El-Gamal Encryption/Decryption operations.
 *
 * Copyright 2019-2024 DigiCert, Inc. All Rights Reserved.
 * Proprietary and Confidential Material.
 *
 */

/*------------------------------------------------------------------*/

#ifndef __PRIMEEC_EG_HEADER__
#define __PRIMEEC_EG_HEADER__

#include "../cap/capdecl.h"

#ifdef __ENABLE_MOCANA_CRYPTO_INTERFACE__
#include "../crypto_interface/crypto_interface_ecc_eg_priv.h"
#endif

#include "../common/mocana.h"
#include "../crypto/hw_accel.h"
#include "../common/random.h"
/* for primefld headers just in case its enabled */
#ifdef __ENABLE_MOCANA_VLONG_ECC_CONVERSION__
#include "../common/vlong.h"
#endif
#include "../crypto/primefld.h"
#include "../crypto/primefld_priv.h"
#include "../crypto/primeec.h"
#include "../crypto/primeec_priv.h"

#ifdef __cplusplus
extern "C" {
#endif
 
#define MOCANA_ECEG_ENCRYPT 0
#define MOCANA_ECEG_DECRYPT 1

#define MOCANA_ECEG_CTR_LEN 4
    
typedef struct ECEG_CTX
{
    ECCKey *pKey;
    ubyte *pBuffer;
    ubyte4 position;
    ubyte4 inputBlockLen;
    ubyte4 outputBlockLen;
    byteBoolean isEncrypt;
    RNGFun rngFun;
    void *pRngArg;
    byteBoolean isInitialized;
        
} ECEG_CTX;


MOC_EXTERN MSTATUS ECEG_init(MOC_ECC(hwAccelDescr hwAccelCtx) ECEG_CTX *pCtx, ECCKey *pKey, ubyte direction, RNGFun rngFun, void *pRngArg, void *pExtCtx);


MOC_EXTERN MSTATUS ECEG_update(MOC_ECC(hwAccelDescr hwAccelCtx) ECEG_CTX *pCtx, ubyte *pInputData, ubyte4 inputDataLen, ubyte *pOutputData, ubyte4 outputDataBufferLen, ubyte4 *pBytesWritten, void *pExtCtx);


MOC_EXTERN MSTATUS ECEG_final(MOC_ECC(hwAccelDescr hwAccelCtx) ECEG_CTX *pCtx, void *pExtCtx);


MOC_EXTERN MSTATUS ECEG_encrypt(MOC_ECC(hwAccelDescr hwAccelCtx) ECCKey *pPublicKey, RNGFun rngFun, void *pRngArg, ubyte *pPlaintext, ubyte4 plaintextLen, ubyte **ppCiphertext, ubyte4 *pCiphertextLen, void *pExtCtx);

MOC_EXTERN MSTATUS ECEG_decrypt(MOC_ECC(hwAccelDescr hwAccelCtx) ECCKey *pPrivateKey, ubyte *pCiphertext, ubyte4 ciphertextLen, ubyte **ppPlaintext, ubyte4 *pPlaintextLen, void *pExtCtx);


MOC_EXTERN MSTATUS ECEG_encryptPKCSv1p5(MOC_ECC(hwAccelDescr hwAccelCtx) ECCKey *pPublicKey, RNGFun rngFun, void *pRngArg, ubyte *pPlaintext, ubyte4 plaintextLen, ubyte *pCiphertext, void *pExtCtx);


MOC_EXTERN MSTATUS ECEG_decryptPKCSv1p5(MOC_ECC(hwAccelDescr hwAccelCtx) ECCKey *pPrivateKey, ubyte *pCiphertext, ubyte4 ciphertextLen, ubyte *pPlaintext, void *pExtCtx);

#ifdef __cplusplus
}
#endif

#endif /* __PRIMEEC_EG_HEADER__ */