cn.benma666.sm

类 SM2

java.lang.Object

cn.benma666.sm.SM2

public class SM2
extends Object

SM2公钥加密算法实现 包括 -签名,验签 -密钥交换 -公钥加密,私钥解密

作者:

Potato

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	SM2.KeyExchange 密钥协商辅助类
static class	SM2.Signature

构造器概要

构造器

构造器和说明
SM2()
SM2(boolean debug)

方法概要

限定符和类型	方法和说明
String	decrypt(byte[] encryptData, BigInteger privateKey) 私钥解密
byte[]	encrypt(byte[] inputBuffer, org.bouncycastle.math.ec.ECPoint publicKey) 公钥加密
byte[]	encrypt(File inputfile, org.bouncycastle.math.ec.ECPoint publicKey) 公钥加密
byte[]	encrypt(String input, org.bouncycastle.math.ec.ECPoint publicKey) 公钥加密 * @param input 加密原文
void	exportPrivateKey(BigInteger privateKey, String path) 导出私钥到本地
void	exportPublicKey(org.bouncycastle.math.ec.ECPoint publicKey, String path) 导出公钥到本地
SM2KeyPair	generateKeyPair() 生成密钥对
BigInteger	importPrivateKey(String path) 从本地导入私钥
org.bouncycastle.math.ec.ECPoint	importPublicKey(String path) 从本地导入公钥
boolean	isDebug()
static void	main(String[] args)
static void	printHexString(byte[] b) 以16进制打印字节数组
static String	privateKeyToString(BigInteger privateKey)
static String	publicKeyToString(org.bouncycastle.math.ec.ECPoint publicKey)
void	setDebug(boolean debug)
SM2.Signature	sign(String M, String IDA, SM2KeyPair keyPair) 签名
static BigInteger	stringToPrivateKey(String key)
static org.bouncycastle.math.ec.ECPoint	stringToPublicKey(String key)
boolean	verify(String M, SM2.Signature signature, String IDA, org.bouncycastle.math.ec.ECPoint aPublicKey) 验签

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

SM2

public SM2()

SM2

public SM2(boolean debug)

方法详细资料

isDebug

public boolean isDebug()

setDebug

public void setDebug(boolean debug)

printHexString

public static void printHexString(byte[] b)

以16进制打印字节数组

参数:

b -

encrypt

public byte[] encrypt(String input,
                      org.bouncycastle.math.ec.ECPoint publicKey)

公钥加密 * @param input 加密原文

参数:

publicKey - 公钥

返回:

encrypt

public byte[] encrypt(byte[] inputBuffer,
                      org.bouncycastle.math.ec.ECPoint publicKey)

公钥加密

参数:

inputBuffer - 加密原文

publicKey - 公钥

返回:

encrypt

public byte[] encrypt(File inputfile,
                      org.bouncycastle.math.ec.ECPoint publicKey)
               throws Exception

公钥加密

参数:

inputfile - 加密原文

publicKey - 公钥

返回:

抛出:

Exception

decrypt

public String decrypt(byte[] encryptData,
                      BigInteger privateKey)

私钥解密

参数:

encryptData - 密文数据字节数组

privateKey - 解密私钥

返回:

generateKeyPair

public SM2KeyPair generateKeyPair()

生成密钥对

返回:

exportPublicKey

public void exportPublicKey(org.bouncycastle.math.ec.ECPoint publicKey,
                            String path)

导出公钥到本地

参数:

publicKey -

path -

publicKeyToString

public static String publicKeyToString(org.bouncycastle.math.ec.ECPoint publicKey)

stringToPublicKey

public static org.bouncycastle.math.ec.ECPoint stringToPublicKey(String key)

importPublicKey

public org.bouncycastle.math.ec.ECPoint importPublicKey(String path)

从本地导入公钥

参数:

path -

返回:

exportPrivateKey

public void exportPrivateKey(BigInteger privateKey,
                             String path)

导出私钥到本地

参数:

privateKey -

path -

privateKeyToString

public static String privateKeyToString(BigInteger privateKey)

stringToPrivateKey

public static BigInteger stringToPrivateKey(String key)

importPrivateKey

public BigInteger importPrivateKey(String path)

从本地导入私钥

参数:

path -

返回:

sign

public SM2.Signature sign(String M,
                          String IDA,
                          SM2KeyPair keyPair)

签名

参数:

M - 签名信息

IDA - 签名方唯一标识

keyPair - 签名方密钥对

返回:

签名

verify

public boolean verify(String M,
                      SM2.Signature signature,
                      String IDA,
                      org.bouncycastle.math.ec.ECPoint aPublicKey)

验签

参数:

M - 签名信息

signature - 签名

IDA - 签名方唯一标识

aPublicKey - 签名方公钥

返回:

true or false

main

public static void main(String[] args)
                 throws UnsupportedEncodingException

抛出:

UnsupportedEncodingException