package main

/*
#cgo CFLAGS: -I./include
#cgo LDFLAGS: -L./lib -lKGCAll
#include "miracl.h"
#include "mirdef.h"
#include "hash.h"
#include "kgc.h"
#include "utils.h"
#include "ecurve.h"
#include "sign.h"

#include "utils.cpp"
#include "ecurve.cpp"
#include "hash.cpp"
#include "sign.cpp"
#include "kgc.cpp"
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
char* IDA = "1234567890111213141516171819202122232425"; // 发送者ID
char* IDB = "1448579437597582757693565726417498574267"; // 接受者ID
char* M = "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD";
char* msk = "msk";
char* PKP = "PK_pub";
char* Public = "P_P";
char* QA = "Q_A";
char* dA = "d_A";
char* xA = "x_A";
char* XA = "X_A";
char* saA = "sa_A";
*/
import "C"
import "fmt"

func main() {

	mip := C.mirsys(512, 16) // 初始化MIRACL系统，512位，16进制数
	mip.IOBASE = 16          // 设置大整数为16进制
	a := C.mirvar(0)
	C.mirkill(a)
	C.setRandSeed()

	// 建立椭圆曲线
	var params C.ECC_PARAMS
	if !C.setupEcurve(&params) {
		fmt.Println("ecurve setup failed")
		C.mirexit()
		panic("椭圆曲线建立失败！")
	}

	C.setRandSeed() // 随机数种子
	//初始化参数
	msk := C.mirvar(0)        //私钥
	PK_pub := C.epoint_init() //公钥
	d_A := C.mirvar(0)        //用户A产生的部分私钥
	x_A := C.mirvar(0)        //用户产生的秘密值
	X_A := C.epoint_init()
	sa_A := C.mirvar(0)    //用户完整私钥
	Q_A := C.epoint_init() //用户完整公钥
	val := C.mirvar(0)     //用户返回的签名值
	U := C.epoint_init()   //随机点值

	// 产生KGC密钥对: msk, PK_pub
	C.genKGCkey(&params, msk, PK_pub)
	C.outbig(msk, C.msk)

	C.outpoint((&params).P, C.Public)
	C.outpoint(PK_pub, C.PKP)

	// 产生用户A的秘密值
	C.genSecret(&params, x_A, X_A)
	C.outbig(x_A, C.xA)
	C.outpoint(X_A, C.XA)

	// 产生用户A的部分私钥和用户的完整公钥
	if !C.genPPK_std(&params, msk, PK_pub, C.IDA, d_A, Q_A, X_A) {
		fmt.Println("Generate PPK for IDA failed.")
		goto error
	}
	C.outbig(d_A, C.dA)
	C.outpoint(Q_A, C.QA)

	// 输出完整的用户私钥
	C.getFullkey(&params, C.IDA, d_A, x_A, X_A, sa_A)
	C.outbig(sa_A, C.saA)

	// 签名，Gowri Thumbur方案
	C.sign_Thumbur(&params, C.IDA, C.M, sa_A, Q_A, U, PK_pub, val)

	// 验签
	if C.verify_Thumbur(&params, C.IDA, C.M, Q_A, PK_pub, U, val) {
		fmt.Println("\nsignature valid.")
	} else {
		fmt.Println("\nverify failed.")
	}

error:
	C.mirkill(msk)
	C.mirkill(d_A)
	C.mirkill(x_A)
	C.mirkill(sa_A)
	C.epoint_free(PK_pub)
	C.epoint_free(X_A)
	C.epoint_free(Q_A)
	C.epoint_free(U)

	C.freeEcurve(&params)
	C.mirexit() // 退出MIRACL系统

}