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
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?????文件???????2461??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\Cipher.java

?????文件???????6354??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM2.java

?????文件????????401??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM2Result.java

?????文件???????7902??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM2Utils.java

?????文件???????8035??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM3.java

?????文件???????3003??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM3Digest.java

?????文件???????9784??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM4.java

?????文件???????4296??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM4Utils.java

?????文件????????245??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\SM4_Context.java

?????文件??????????0??2016-09-24?10:04??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\tip.txt

?????文件??????17401??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm\Util.java

?????文件??????16578??2016-09-24?10:08??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code.rar

?????文件?????945731??2016-01-07?13:19??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM2橢圓曲線公鑰密碼算法.pdf

?????文件??????22552??2016-01-07?13:19??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM2橢圓曲線公鑰密碼算法推薦曲線參數.pdf

?????文件???????8035??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM3算法\SM3.java

?????文件???????3003??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM3算法\SM3Digest.java

?????文件?????103677??2016-01-12?12:01??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM3算法\SM3密碼雜湊算法.pdf

?????文件??????17401??2016-09-24?10:05??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM3算法\Util.java

?????文件????3534741??2018-01-17?17:16??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM3算法.rar

?????文件?????205357??2016-01-07?13:04??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM4分組密碼算法.pdf

?????目錄??????????0??2016-09-24?10:06??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher\sm

?????目錄??????????0??2016-09-24?10:06??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security\cipher

?????目錄??????????0??2016-09-24?10:06??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com\security

?????目錄??????????0??2016-09-24?10:06??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code\com

?????目錄??????????0??2017-09-04?14:23??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\code

?????目錄??????????0??2018-01-12?16:57??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）\SM3算法

?????目錄??????????0??2018-01-17?17:16??SM2&SM3&SM4國密算法Java實現（含詳細測試代碼）

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