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/*
* Copyright (C) 2017-2024 Alibaba Group Holding Limited
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/******************************************************************************
* @file drv/ecdsa.h
* @brief Header File for ECDSA Driver
* @version V1.0
* @date 9. May 2023
* @model ecdsa
******************************************************************************/
#ifndef _DRV_ECDSA_H_
#define _DRV_ECDSA_H_
#include <drv/common.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
\brief EC curve type
*/
typedef enum {
CSI_CURVES_SECP256K1 = 0U, /* SECG curve over a 256 bit prime field */
CSI_CURVES_SECP384R1, /* NIST/SECG curve over a 384 bit prime field */
CSI_CURVES_SECP521R1, /* NIST/SECG curve over a 521 bit prime field */
CSI_CURVES_BRAINPOOL256R1, /* RFC 5639 curve over a 256 prime field */
CSI_CURVES_BRAINPOOL256T1, /* RFC 5639 curve over a 256 prime field */
CSI_CURVES_BRAINPOOL512R1, /* RFC 5639 curve over a 512 prime field */
CSI_CURVES_BRAINPOOL512T1, /* RFC 5639 curve over a 512 prime field */
} csi_curve_type_t;
/**
\brief ECDSA Ctrl Block
*/
typedef struct {
csi_dev_t dev;
void *priv;
} csi_ecdsa_t;
/**
\brief Initialize ECDSA interface. Initializes the resources needed for the ECDSA interface
\param[in] ecdsa Handle to operate
\param[in] idx Device id
\return Error code \ref csi_error_t
*/
csi_error_t csi_ecdsa_init(csi_ecdsa_t *ecdsa, uint32_t idx);
/**
\brief De-initialize ECDSA interface. Stops operation and releases the software resources used by the interface
\param[in] ecdsa Dandle to operate
\return None
*/
void csi_ecdsa_uninit(csi_ecdsa_t *ecdsa);
/**
\brief Load curve param to engin
\param[in] ecdsa Handle to operate
\param[in] type Pointer to \ref csi_curve_type_t
\return Error code \ref csi_error_t
*/
csi_error_t csi_ecdsa_load_curve(csi_ecdsa_t *ecdsa, csi_curve_type_t type);
/**
\brief Ecdsa Sign
\param[in] ecdsa Handle to operate
\param[in] prikey Pointer to the private key buf
\param[in] prikey_len The private key length
\param[in] dgst Pointer to the digest buf
\param[in] dgst_len The digest length
\param[out] sig Pointer to the signature buf
\param[out] sig_len The signature length
\return Error code \ref Csi_error_t
*/
csi_error_t csi_ecdsa_sign(csi_ecdsa_t *ecdsa, const uint8_t *prikey, uint32_t prikey_len,
const uint8_t *dgst, uint32_t dgst_len, uint8_t *sig, uint32_t *sig_len);
/**
\brief Ecdsa Verify
\param[in] ecdsa Handle to operate
\param[in] pubkey Pointer to the public key buf
\param[in] prikey_len The public key length
\param[in] dgst Pointer to the digest buf
\param[in] dgst_len The digest length
\param[in] sig Pointer to the signature buf
\param[in] sig_len The signature length
\return Error code \ref Csi_error_t
*/
csi_error_t csi_ecdsa_verify(csi_ecdsa_t *ecdsa, const uint8_t *pubkey, uint32_t pubkey_len,
const uint8_t *dgst, uint32_t gst_len, const uint8_t *sig, uint32_t sig_len);
#ifdef __cplusplus
}
#endif
#endif /* _DRV_ECDSA_H_ */
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