package?com.mlq.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
-----------?---------??----------?-----??----
?????文件?????????297??2016-12-28?09:42??TestSM\.classpath
?????文件?????????382??2016-12-28?09:39??TestSM\.project
?????文件??????????57??2016-12-28?09:41??TestSM\.settings\org.eclipse.core.resources.prefs
?????文件?????????598??2016-03-25?14:36??TestSM\.settings\org.eclipse.jdt.core.prefs
?????文件????????3346??2016-12-28?09:43??TestSM\bin\com\mlq\sm\Cipher.class
?????文件????????3129??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM2.class
?????文件????????4302??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM2Utils.class
?????文件????????5063??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM3.class
?????文件????????2920??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM3Digest.class
?????文件????????7853??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM4.class
?????文件????????4017??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM4Utils.class
?????文件?????????405??2016-12-28?09:43??TestSM\bin\com\mlq\sm\SM4_Context.class
?????文件????????9496??2016-12-28?09:43??TestSM\bin\com\mlq\sm\Util.class
?????文件?????1876535??2016-03-21?14:08??TestSM\libs\bcprov-jdk16-1.46.jar
?????文件????????2449??2016-03-28?15:14??TestSM\src\com\mlq\sm\Cipher.java
?????文件????????3035??2016-03-28?15:14??TestSM\src\com\mlq\sm\SM2.java
?????文件????????3936??2016-03-28?15:14??TestSM\src\com\mlq\sm\SM2Utils.java
?????文件????????6502??2016-03-28?15:16??TestSM\src\com\mlq\sm\SM3.java
?????文件????????3097??2016-12-28?09:43??TestSM\src\com\mlq\sm\SM3Digest.java
?????文件????????9772??2016-03-28?15:14??TestSM\src\com\mlq\sm\SM4.java
?????文件????????4298??2016-03-28?15:22??TestSM\src\com\mlq\sm\SM4Utils.java
?????文件?????????233??2016-03-28?15:14??TestSM\src\com\mlq\sm\SM4_Context.java
?????文件???????18276??2016-03-28?15:18??TestSM\src\com\mlq\sm\Util.java