SM2&SM3&SM4 java实现

SM2 SM3 SM4 的java软实现，经过多种语言的加密解密测试，通用性极强

package com.mlq.sm;

import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class SM4Utils
{
	private String secretKey = "";
	private String iv = "";
	private boolean hexString = false;
	
	public SM4Utils()
	{
	}
	
	public String encryptData_ECB(String plainText)
	{
		try 
		{
			SM4_Context ctx = new SM4_Context();
			ctx.isPadding = true;
			ctx.mode = SM4.SM4_ENCRYPT;
			
			byte[] keyBytes;
			if (hexString)
			{
				keyBytes = Util.hexStringToBytes(secretKey);
			}
			else
			{
				keyBytes = secretKey.getBytes();
			}
			
			SM4 sm4 = new SM4();
			sm4.sm4_setkey_enc(ctx, keyBytes);
			byte[] encrypted = sm4.sm4_crypt_ecb(ctx, plainText.getBytes("GBK"));
			String cipherText = new BASE64Encoder().encode(encrypted);
			if (cipherText != null && cipherText.trim().length() > 0)
			{
				Pattern p = Pattern.compile("\\s*|\t|\r|\n");
				Matcher m = p.matcher(cipherText);
				cipherText = m.replaceAll("");
			}
			return cipherText;
		} 
		catch (Exception e) 
		{
			e.printStackTrace();
			return null;
		}
	}
	
	public String decryptData_ECB(String cipherText)
	{
		try 
		{
			SM4_Context ctx = new SM4_Context();
			ctx.isPadding = true;
			ctx.mode = SM4.SM4_DECRYPT;
			
			byte[] keyBytes;
			if (hexString)
			{
				keyBytes = Util.hexStringToBytes(secretKey);
			}
			else
			{
				keyBytes = secretKey.getBytes();
			}
			
			SM4 sm4 = new SM4();
			sm4.sm4_setkey_dec(ctx, keyBytes);
			byte[] decrypted = sm4.sm4_crypt_ecb(ctx, new BASE64Decoder().decodeBuffer(cipherText));
			return new String(decrypted, "GBK");
		} 
		catch (Exception e) 
		{
			e.printStackTrace();
			return null;
		}
	}
	
	public String encryptData_CBC(String plainText)
	{
		try 
		{
			SM4_Context ctx = new SM4_Context();
			ctx.isPadding = true;
			ctx.mode = SM4.SM4_ENCRYPT;
			
			byte[] keyBytes;
			byte[] ivBytes;
			if (hexString)
			{
				keyBytes = Util.hexStringToBytes(secretKey);
				ivBytes = Util.hexStringToBytes(iv);
			}
			else
			{
				keyBytes = secretKey.getBytes();
				ivBytes = iv.getBytes();
			}
			
			SM4 sm4 = new SM4();
			sm4.sm4_setkey_enc(ctx, keyBytes);
			byte[] encrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, plainText.getBytes("GBK"));
			String cipherText = new BASE64Encoder().encode(encrypted);
			if (cipherText != null && cipherText.trim().length() > 0)
			{
				Pattern p = Pattern.compile("\\s*|\t|\r|\n");
				Matcher m = p.matcher(cipherText);
				cipherText = m.replaceAll("");
			}
			return cipherText;
		} 
		catch (Exception e) 
		{
			e.printStackTrace();
			return null;
		}
	}
	
	public String decryptData_CBC(String cipherText)
	{
		try 
		{
			SM4_Context ctx = new SM4_Context();
			ctx.isPadding = true;
			ctx.mode = SM4.SM4_DECRYPT;
			
			byte[] keyBytes;
			byte[] ivBytes;
			if (hexString)
			{
				keyBytes = Util.hexStringToBytes(secretKey);
				ivBytes = Util.hexStringToBytes(iv);
			}
			else
			{
				keyBytes = secretKey.getBytes();
				ivBytes = iv.getBytes();
			}
			
			SM4 sm4 = new SM4();
			sm4.sm4_setkey_dec(ctx, keyBytes);
			byte[] decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, new BASE64Decoder().decodeBuffer(cipherText));
			return new String(decrypted, "GBK");
		} 
		catch (Exception e)
		{
			e.printStackTrace();
			return null;
		}
	}
	
	public static void main(String[] args) throws IOException 
	{
		String plainText = "ererfeiisgod";
		
		SM4Utils sm4 = new SM4Utils();
		sm4.secretKey = "JeF8U9wHFOMfs2Y8";
		sm4.hexString = false;
		
		System.out.println("ECB模式");
		String cipherText = sm4.encryptData_ECB(plainText);
		System.out.println("密文: "   cipherText);
		System.out.println("");
		
		plainText = sm4.decryptData_ECB(cipherText);
		System.out.println("明文: "   plainText);
		System.out.println("");
		
		System.out.println("CBC模式");
		sm4.iv = "UISwD9fW6cFh9SNS";
		cipherText = sm4.encryptData_CBC(plainText);
		System.out.println("密文: "   cipherText);
		System.out.println("");
		
		plainText = sm4.decryptData_CBC(cipherText);
		System.out.println("明文: "   plainText);
	}
}

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资源文件列表

TestSM/.classpath , 415
TestSM/.project , 382
TestSM/.settings/org.eclipse.jdt.core.prefs , 598
TestSM/bin/com/mlq/sm/Cipher.class , 3390
TestSM/bin/com/mlq/sm/SM2.class , 3129
TestSM/bin/com/mlq/sm/SM2Utils.class , 4344
TestSM/bin/com/mlq/sm/SM3.class , 5297
TestSM/bin/com/mlq/sm/SM3Digest.class , 2997
TestSM/bin/com/mlq/sm/SM4.class , 8070
TestSM/bin/com/mlq/sm/SM4Utils.class , 4212
TestSM/bin/com/mlq/sm/SM4_Context.class , 405
TestSM/bin/com/mlq/sm/Util.class , 10074
TestSM/libs/bcprov-jdk16-1.46.jar , 1876535
TestSM/src/com/mlq/sm/Cipher.java , 2449
TestSM/src/com/mlq/sm/SM2.java , 3035
TestSM/src/com/mlq/sm/SM2Utils.java , 3936
TestSM/src/com/mlq/sm/SM3.java , 6502
TestSM/src/com/mlq/sm/SM3Digest.java , 3079
TestSM/src/com/mlq/sm/SM4.java , 9772
TestSM/src/com/mlq/sm/SM4Utils.java , 4298
TestSM/src/com/mlq/sm/SM4_Context.java , 233
TestSM/src/com/mlq/sm/Util.java , 18276