crypto_ec.h

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#ifndef CRYPTO_EC_H_
#define CRYPTO_EC_H_
 
#include <stdint.h>
#include "crypto_ecc_provider_params.h"
#include <hw_ecc_curves.h>
#include  "crypto_ecc_provider_function_map.h"
#if dg_USE_UECC_LIB
//This is needed because uECC curve datatype is part of crypto_uecc_curve structure.
#include "uECC.h"
#endif
 
typedef struct {
#if dg_USE_HW_ECC
        const uint8_t *q;                     
        const uint8_t *n;                     
        const uint8_t *Gx;                    
        const uint8_t *Gy;                    
        const uint8_t *a;                     
        const uint8_t *b;                     
        uint32_t cmd;                         
#endif
        uint8_t o_sz;                         
        CRYPTO_ECC_CURVE type;                
#if dg_USE_UECC_LIB
        uECC_Curve crypto_uecc_curve;         
#endif
} crypto_ec_params_t;
 
 
#if dg_ALLOW_DYNAMIC_LIB_PROVIDER
 
CRYPTO_ECC_PROVIDER_RET crypto_ecc_set_curve_lib_provider(CRYPTO_ECC_CURVE curve_type, ECC_CRYPTO_LIB_PROVIDER lib_provider_input);
#endif
 
CRYPTO_ECC_PROVIDER_RET crypto_ecc_curve_init(crypto_ec_params_t *curve, CRYPTO_ECC_CURVE curve_type);
 
CRYPTO_ECC_PROVIDER_RET crypto_ecc_compute_public_key(crypto_ec_params_t *curve, uint8_t *d, uint8_t *Q);
 
CRYPTO_ECC_PROVIDER_RET crypto_ecc_compute_private_key(crypto_ec_params_t *curve, uint8_t *d);
 
CRYPTO_ECC_PROVIDER_RET crypto_ecc_compute_shared_secret(crypto_ec_params_t *curve, uint8_t *d, uint8_t *Qp, uint8_t *s);
 
 
#if dg_USE_HW_ECC
#define _CRYPTO_EC_CMD(_sb, _sa, _os, _f) \
        ((_sb << ECC_ECC_COMMAND_REG_ECC_SignB_Pos) | (_sa << ECC_ECC_COMMAND_REG_ECC_SignA_Pos) | \
         (_os << ECC_ECC_COMMAND_REG_ECC_SizeOfOperands_Pos) | (_f << ECC_ECC_COMMAND_REG_ECC_Field_Pos))
 
#define CRYPTO_EC_PARAMS_SECP192R1 \
        { hw_ecc_p192_q, hw_ecc_p192_n, hw_ecc_p192_Gx, hw_ecc_p192_Gy, hw_ecc_p192_a, hw_ecc_p192_b, \
          _CRYPTO_EC_CMD(HW_ECC_CMD_SIGNB_POS, HW_ECC_CMD_SIGNA_POS, HW_ECC_CMD_OP_SIZE_256B, HW_ECC_CMD_FIELD_FP), 24, ECC_CRYPTO_SECP192R1 }
 
#define CRYPTO_EC_PARAMS_SECP224R1 \
        { hw_ecc_p224_q, hw_ecc_p224_n, hw_ecc_p224_Gx, hw_ecc_p224_Gy, hw_ecc_p224_a, hw_ecc_p224_b, \
          _CRYPTO_EC_CMD(HW_ECC_CMD_SIGNB_POS, HW_ECC_CMD_SIGNA_POS, HW_ECC_CMD_OP_SIZE_256B, HW_ECC_CMD_FIELD_FP), 28, ECC_CRYPTO_SECP224R1 }
 
#define CRYPTO_EC_PARAMS_SECP256R1 \
        { hw_ecc_p256_q, hw_ecc_p256_n, hw_ecc_p256_Gx, hw_ecc_p256_Gy, hw_ecc_p256_a, hw_ecc_p256_b, \
          _CRYPTO_EC_CMD(HW_ECC_CMD_SIGNB_POS, HW_ECC_CMD_SIGNA_POS, HW_ECC_CMD_OP_SIZE_256B, HW_ECC_CMD_FIELD_FP), 32, ECC_CRYPTO_SECP256R1 }
 
#define CRYPTO_EC_PARAMS_CURVE25519 \
        { hw_ecc_curve25519_p, NULL, hw_ecc_curve25519_G, NULL, hw_ecc_curve25519_a24, NULL, \
          _CRYPTO_EC_CMD(HW_ECC_CMD_SIGNB_POS, HW_ECC_CMD_SIGNA_POS, HW_ECC_CMD_OP_SIZE_256B, HW_ECC_CMD_FIELD_FP), 32, ECC_CRYPTO_CURVE25519 }
 
#endif /*dg_USE_HW_ECC*/
 
#endif  /* CRYPTO_EC_H_ */