package?com.dtdream.dtuser.base.util.encrypt.sm;

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

import?java.math.BigInteger;

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[]?=?SMUtil.byteConvert32Bytes（p2.getX（）.toBigInteger（））;
		this.sm3keybase.update（p?0?p.length）;
		this.sm3c3.update（p?0?p.length）;
		p?=?SMUtil.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[]?=?SMUtil.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???????2345??2019-03-07?15:11??SM2SM3\java\SM\Cipher.java

?????文件???????2472??2019-03-07?15:05??SM2SM3\java\SM\SM2.java

?????文件???????5634??2019-03-07?15:45??SM2SM3\java\SM\SM2Utils.java

?????文件???????5588??2018-11-05?10:44??SM2SM3\java\SM\SM3.java

?????文件???????2684??2018-11-05?10:44??SM2SM3\java\SM\SM3Digest.java

?????文件???????2313??2018-11-05?10:44??SM2SM3\java\SM\SMUtil.java

?????文件????????913??2018-11-05?10:44??SM2SM3\read?me.txt

?????文件???????2071??2019-03-07?14:26??SM2SM3\sm2.html

?????文件?????994532??2018-11-01?16:19??SM2SM3\sm2.js

?????文件????????680??2018-11-05?10:24??SM2SM3\sm3.html

?????文件???????7061??2018-11-05?10:44??SM2SM3\sm3.js

?????目錄??????????0??2019-03-07?16:08??SM2SM3\java\SM

?????目錄??????????0??2019-03-07?16:08??SM2SM3\java

?????目錄??????????0??2018-11-05?10:21??SM2SM3

-----------?---------??----------?-----??----

??????????????1026293????????????????????14