package?com.lysj.property.core.util.sm;

import?java.io.ByteArrayOutputStream;
import?java.io.File;
import?java.io.FileInputStream;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.objectInputStream;
import?java.io.objectOutputStream;
import?java.io.Serializable;
import?java.io.UnsupportedEncodingException;
import?java.math.BigInteger;
import?java.security.SecureRandom;
import?java.util.Arrays;

import?org.bouncycastle.crypto.params.ECDomainParameters;
import?org.bouncycastle.math.ec.ECCurve;
import?org.bouncycastle.math.ec.ECPoint;

/**
?*?SM2公鑰加密算法實(shí)現(xiàn)?包括?-簽名驗(yàn)簽?-密鑰交換?-公鑰加密私鑰解密
?*?
?*?@author?Potato
?*
?*/
public?class?SM2?{
	private?static?BigInteger?n?=?new?BigInteger（
			“FFFFFFFE“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“7203DF6B“?+?“21C6052B“?+?“53BBF409“?+?“39D54123“?16）;
	private?static?BigInteger?p?=?new?BigInteger（
			“FFFFFFFE“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“00000000“?+?“FFFFFFFF“?+?“FFFFFFFF“?16）;
	private?static?BigInteger?a?=?new?BigInteger（
			“FFFFFFFE“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“FFFFFFFF“?+?“00000000“?+?“FFFFFFFF“?+?“FFFFFFFC“?16）;
	private?static?BigInteger?b?=?new?BigInteger（
			“28E9FA9E“?+?“9D9F5E34“?+?“4D5A9E4B“?+?“CF6509A7“?+?“F39789F5“?+?“15AB8F92“?+?“DDBCBD41“?+?“4D940E93“?16）;
	private?static?BigInteger?gx?=?new?BigInteger（
			“32C4AE2C“?+?“1F198119“?+?“5F990446“?+?“6A39C994“?+?“8FE30BBF“?+?“F2660BE1“?+?“715A4589“?+?“334C74C7“?16）;
	private?static?BigInteger?gy?=?new?BigInteger（
			“BC3736A2“?+?“F4F6779C“?+?“59BDCEE3“?+?“6B692153“?+?“D0A9877C“?+?“C62A4740“?+?“02DF32E5“?+?“2139F0A0“?16）;
	private?static?ECDomainParameters?ecc_bc_spec;
	private?static?int?w?=?（int）?Math.ceil（n.bitLength（）?*?1.0?/?2）?-?1;
	private?static?BigInteger?_2w?=?new?BigInteger（“2“）.pow（w）;
	private?static?final?int?DIGEST_LENGTH?=?32;

	private?static?SecureRandom?random?=?new?SecureRandom（）;
	private?static?ECCurve.Fp?curve;
	private?static?ECPoint?G;
	private?boolean?debug?=?false;

	public?boolean?isDebug（）?{
		return?debug;
	}

	public?void?setDebug（boolean?debug）?{
		this.debug?=?debug;
	}

	/**
	?*?以16進(jìn)制打印字節(jié)數(shù)組
	?*?
	?*?@param?b
	?*/
	public?static?void?printHexString（byte[]?b）?{
		for?（int?i?=?0;?i?			String?hex?=?Integer.toHexString（b[i]?&?0xFF）;
			if?（hex.length（）?==?1）?{
				hex?=?‘0‘?+?hex;
			}
			System.out.print（hex.toUpperCase（））;
		}
		System.out.println（）;
	}

	/**
	?*?隨機(jī)數(shù)生成器
	?*?
	?*?@param?max
	?*?@return
	?*/
	private?static?BigInteger?random（BigInteger?max）?{

		BigInteger?r?=?new?BigInteger（256?random）;
		//?int?count?=?1;

		while?（r.compareTo（max）?>=?0）?{
			r?=?new?BigInteger（128?random）;
			//?count++;
		}

		//?System.out.println（“count:?“?+?count）;
		return?r;
	}

	/**
	?*?判斷字節(jié)數(shù)組是否全0
	?*?
	?*?@param?buffer
	?*?@return
	?*/
	private?boolean?allZero（byte[]?buffer）?{
		for?（int?i?=?0;?i?			if?（buffer[i]?!=?0）

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????535??2019-01-07?16:24??SM2KeyPair.java

?????文件???????7531??2019-01-07?17:09??SM3.java

?????文件??????24405??2019-01-07?16:24??SM2.java

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

????????????????32471????????????????????3