package?com.luxy.core.utils;

import?java.math.BigInteger;

import?org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import?org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import?org.bouncycastle.crypto.params.ECPublicKeyParameters;
import?org.bouncycastle.math.ec.ECPoint;

public?class?Cipher
{
	private?int?ct;
	private?ECPoint?p2;
	private?SM3Digest?sm3keybase;
	private?SM3Digest?sm3c3;
	private?byte?key[];
	private?byte?keyOff;

	public?Cipher（）
	{
		this.ct?=?1;
		this.key?=?new?byte[32];
		this.keyOff?=?0;
	}

	private?void?Reset（）
	{
		this.sm3keybase?=?new?SM3Digest（）;
		this.sm3c3?=?new?SM3Digest（）;

		byte?p[]?=?SecurityUtils.byteConvert32Bytes（p2.getX（）.toBigInteger（））;
		this.sm3keybase.update（p?0?p.length）;
		this.sm3c3.update（p?0?p.length）;

		p?=?SecurityUtils.byteConvert32Bytes（p2.getY（）.toBigInteger（））;
		this.sm3keybase.update（p?0?p.length）;
		this.ct?=?1;
		NextKey（）;
	}

	private?void?NextKey（）
	{
		SM3Digest?sm3keycur?=?new?SM3Digest（this.sm3keybase）;
		sm3keycur.update（（byte）?（ct?>>?24?&?0xff））;
		sm3keycur.update（（byte）?（ct?>>?16?&?0xff））;
		sm3keycur.update（（byte）?（ct?>>?8?&?0xff））;
		sm3keycur.update（（byte）?（ct?&?0xff））;
		sm3keycur.doFinal（key?0）;
		this.keyOff?=?0;
		this.ct++;
	}

	public?ECPoint?Init_enc（SM2?sm2?ECPoint?userKey）
	{
		AsymmetricCipherKeyPair?key?=?sm2.ecc_key_pair_generator.generateKeyPair（）;
		ECPrivateKeyParameters?ecpriv?=?（ECPrivateKeyParameters）?key.getPrivate（）;
		ECPublicKeyParameters?ecpub?=?（ECPublicKeyParameters）?key.getPublic（）;
		BigInteger?k?=?ecpriv.getD（）;
		ECPoint?c1?=?ecpub.getQ（）;
		this.p2?=?userKey.multiply（k）;
		Reset（）;
		return?c1;
	}

	public?void?Encrypt（byte?data[]）
	{
		this.sm3c3.update（data?0?data.length）;
		for?（int?i?=?0;?i?		{
			if?（keyOff?==?key.length）
			{
				NextKey（）;
			}
			data[i]?^=?key[keyOff++];
		}
	}

	public?void?Init_dec（BigInteger?userD?ECPoint?c1）
	{
		this.p2?=?c1.multiply（userD）;
		Reset（）;
	}

	public?void?Decrypt（byte?data[]）
	{
		for?（int?i?=?0;?i?		{
			if?（keyOff?==?key.length）
			{
				NextKey（）;
			}
			data[i]?^=?key[keyOff++];
		}

		this.sm3c3.update（data?0?data.length）;
	}

	public?void?Dofinal（byte?c3[]）
	{
		byte?p[]?=?SecurityUtils.byteConvert32Bytes（p2.getY（）.toBigInteger（））;
		this.sm3c3.update（p?0?p.length）;
		this.sm3c3.doFinal（c3?0）;
		Reset（）;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-12-11?15:13??SM2_js+java\
?????目錄???????????0??2018-12-11?15:13??SM2_js+java\java\
?????文件????????2472??2018-12-11?11:32??SM2_js+java\java\Cipher.java
?????文件????????2702??2018-12-11?11:31??SM2_js+java\java\SM2.java
?????文件????????4496??2018-12-11?15:05??SM2_js+java\java\SM2Utils.java
?????文件????????6538??2018-12-11?11:31??SM2_js+java\java\SM3.java
?????文件????????3067??2018-12-11?11:31??SM2_js+java\java\SM3Digest.java
?????文件???????20476??2018-12-11?11:33??SM2_js+java\java\SecurityUtils.java
?????目錄???????????0??2018-12-11?15:13??SM2_js+java\js\
?????目錄???????????0??2018-12-11?15:10??SM2_js+java\js\build\
?????文件?????1020147??2018-12-11?14:23??SM2_js+java\js\build\index.js
?????文件?????1020742??2017-12-21?15:55??SM2_js+java\js\build\test.js
?????文件????????9591??2018-12-11?14:05??SM2_js+java\js\index.html