package?com.security.cipher.sm;

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[]?=?Util.byteConvert32Bytes（p2.getX（）.toBigInteger（））;
		this.sm3keybase.update（p?0?p.length）;
		this.sm3c3.update（p?0?p.length）;
		
		p?=?Util.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[]?=?Util.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??2018-07-25?18:54??SM2_SM4最新加密算法改造及工具包\
?????目錄???????????0??2018-07-25?18:53??SM2_SM4最新加密算法改造及工具包\com\
?????目錄???????????0??2018-07-25?18:53??SM2_SM4最新加密算法改造及工具包\com\security\
?????目錄???????????0??2018-07-25?18:53??SM2_SM4最新加密算法改造及工具包\com\security\cipher\
?????目錄???????????0??2018-07-25?18:37??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\
?????文件????????2461??2016-02-17?11:16??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\Cipher.java
?????文件????????6473??2016-02-20?22:53??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM2.java
?????文件?????????384??2016-02-20?02:29??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM2Result.java
?????文件???????12766??2016-02-21?11:43??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM2Utils.java
?????文件????????7724??2016-02-20?02:30??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM3.java
?????文件????????2923??2016-02-20?02:31??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM3Digest.java
?????文件????????9784??2016-02-17?11:16??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM4.java
?????文件????????4185??2016-02-20?03:10??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM4Utils.java
?????文件?????????245??2016-02-17?11:16??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\SM4_Context.java
?????文件?????????557??2016-02-21?11:13??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\Sm2KeyPair.java
?????文件???????17626??2016-02-20?02:32??SM2_SM4最新加密算法改造及工具包\com\security\cipher\sm\Util.java
?????目錄???????????0??2018-07-25?18:35??SM2_SM4最新加密算法改造及工具包\libs\
?????文件?????1719483??2015-11-12?11:35??SM2_SM4最新加密算法改造及工具包\libs\bcprov-jdk16-145.jar
?????文件????????7471??2016-02-20?02:59??SM2_SM4最新加密算法改造及工具包\libs\sun.misc.base64Decoder.jar