curve_ec_fp.h 文件参考

#include "crypto_pke_struct.h"

curve_ec_fp.h 的引用(Include)关系图:

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函数
td_s32	decode_priv_key (td_u8 *output_key, const td_u8 *input_key, td_u32 klen)
	decode the normal k value. In RFC7748, the k value and point on curve are all encoded.
td_s32	decode_point_x (td_u8 *output_u_x, const td_u8 *input_u_x, td_u32 ulen)
	decode the x coordinate of the point. In RFC7748, the k value and point on curve are all encoded.
td_s32	encode_point_x (td_u8 *output_u_x, const td_u8 *input_u_x, td_u32 ulen)
	encode the x coordinate of the point. In RFC7748, the k value and point on curve are all encoded.
td_s32	curve_ecfp_mul (const drv_pke_ecc_curve *ecc, const drv_pke_data *k, const drv_pke_data *ux, const drv_pke_data *rx)
	Rx = k * ux. calculate point multiplication for curve25519 and curve448. before call this API you should have decoded the k value and the x coordinate of the point. after call this API, if you will transfer the rx to user, you should encode the rx by yourself.
td_s32	curve_ecfp_mul_dot (const drv_pke_ecc_curve *ecc, const drv_pke_data *k, const drv_pke_ecc_point *p, const drv_pke_ecc_point *r CIPHER_CHECK_WORD)
	rx = k * px. calculate point multiplication for curve25519 and curve448.

函数说明

curve_ecfp_mul()

td_s32 curve_ecfp_mul	(	const drv_pke_ecc_curve *	ecc,
		const drv_pke_data *	k,
		const drv_pke_data *	ux,
		const drv_pke_data *	rx
	)

Rx = k * ux. calculate point multiplication for curve25519 and curve448. before call this API you should have decoded the k value and the x coordinate of the point. after call this API, if you will transfer the rx to user, you should encode the rx by yourself.

参数

ecc	the ecc curve param.
k	the input decoded normal k value.
ux	the intput decoded x coordinate of the point.
rx	the output without encoded x coordinate of the point.

返回

td_s32 TD_SUCCESS or others.

curve_ecfp_mul_dot()

td_s32 curve_ecfp_mul_dot	(	const drv_pke_ecc_curve *	ecc,
		const drv_pke_data *	k,
		const drv_pke_ecc_point *	p,
		const drv_pke_ecc_point *r	CIPHER_CHECK_WORD
	)

rx = k * px. calculate point multiplication for curve25519 and curve448.

参数

ecc	The ecc curve param.
k	The input decoded normal k value.
p	The intput decoded x coordinate of the point.
CIPHER_CHECK_WORD	ifdef SEC_ENHANCE, the value is XOR result of parameters, otherwise it doesn't exist.

返回

td_s32 TD_SUCCESS or others.

decode_point_x()

td_s32 decode_point_x	(	td_u8 *	output_u_x,
		const td_u8 *	input_u_x,
		td_u32	ulen
	)

decode the x coordinate of the point. In RFC7748, the k value and point on curve are all encoded.

参数

output_u_x	the decoded x coordinate of the point, which can be used in calculation directly.
input_u_x	the input encoded x coordinate of the point.
ulen	the byte length of x coordinate of the point.

返回

td_s32 TD_SUCCESS or others.

decode_priv_key()

td_s32 decode_priv_key	(	td_u8 *	output_key,
		const td_u8 *	input_key,
		td_u32	klen
	)

decode the normal k value. In RFC7748, the k value and point on curve are all encoded.

Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2022-2022. All rights reserved. Description: the curve drv common algorithm head file. The data will transfor by the func param and will be set into DRAM in the algorithms.

Create: 2022-10-27

参数

output_key	the decoded k value, which can be used in calculation directly.
input_key	the input encoded k value.
klen	the byte length of k value.

返回

td_s32 TD_SUCCESS or others.

encode_point_x()

td_s32 encode_point_x	(	td_u8 *	output_u_x,
		const td_u8 *	input_u_x,
		td_u32	ulen
	)

encode the x coordinate of the point. In RFC7748, the k value and point on curve are all encoded.

参数

output_u_x	the encoded x coordinate of the point, which will be transfered to user.
input_u_x	the input x coordinate of the point.
ulen	the byte length of x coordinate of the point.

返回

td_s32 TD_SUCCESS or others.