cn.tdchain.cipher.sm

类 Sm2Util

java.lang.Object

cn.tdchain.cipher.sm.Sm2Util

public final class Sm2Util
extends java.lang.Object

SM Utility.

版本:

2.0

作者:

Lijiating 2018-10-12

方法概要

限定符和类型	方法和说明
static java.lang.String	decrypt(java.security.PrivateKey privateKey, java.lang.String src) SM2私钥解密.
static java.lang.String	decrypt(java.lang.String privateKey, java.lang.String data)
static java.lang.String	encrypt(java.security.PublicKey publicKey, java.lang.String src) SM2公钥加密.
static java.lang.String	encrypt(java.lang.String publicKey, java.lang.String data)
static java.security.KeyPair	generateSm2KeyPair() Generate SM2 keys.
static java.security.PrivateKey	getPrivateKey(java.lang.String privateKeyStr) SM2私钥字符串转换为对象.
static java.security.PublicKey	getPublicKey(java.lang.String publicKeyStr) SM2公钥字符串转换为对象.
static java.lang.String	sign(java.security.PrivateKey privateKey, java.lang.String src) SM2私钥签名.
static java.lang.String	sign(java.lang.String privateKeyStr, java.lang.String data)
static boolean	verify(java.security.PublicKey publicKey, java.lang.String sign, java.lang.String src) SM2公钥验签.
static boolean	verify(java.lang.String publickey, java.lang.String signature, java.lang.String data)

从类继承的方法 java.lang.Object

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

方法详细资料

generateSm2KeyPair

public static java.security.KeyPair generateSm2KeyPair()
                                                throws java.lang.Exception

Generate SM2 keys.

返回:

KeyPair

抛出:

java.lang.Exception - NoSuchAlgorithmException, NoSuchProviderException, InvalidAlgorithmParameterException

getPrivateKey

public static java.security.PrivateKey getPrivateKey(java.lang.String privateKeyStr)
                                              throws java.lang.Exception

SM2私钥字符串转换为对象.

参数:

privateKeyStr - private key string

返回:

PrivateKey

抛出:

java.lang.Exception - InvalidKeySpecException, NoSuchAlgorithmException, NoSuchProviderException

getPublicKey

public static java.security.PublicKey getPublicKey(java.lang.String publicKeyStr)
                                            throws java.lang.Exception

SM2公钥字符串转换为对象.

参数:

publicKeyStr - public key string

返回:

PublicKey

抛出:

java.lang.Exception - InvalidKeySpecException, NoSuchAlgorithmException, NoSuchProviderException

encrypt

public static java.lang.String encrypt(java.security.PublicKey publicKey,
                                       java.lang.String src)
                                throws java.lang.Exception

SM2公钥加密.

参数:

publicKey - public key

src - source data

返回:

SM2密文，实际包含三部分：ECC公钥、真正的密文、公钥和原文的SM3-HASH值

抛出:

java.lang.Exception - encrypt exception

decrypt

public static java.lang.String decrypt(java.security.PrivateKey privateKey,
                                       java.lang.String src)
                                throws java.lang.Exception

SM2私钥解密.

参数:

privateKey - private key

src - SM2密文，实际包含三部分：ECC公钥、真正的密文、公钥和原文的SM3-HASH值

返回:

原文

抛出:

java.lang.Exception - decrypt exception

sign

public static java.lang.String sign(java.security.PrivateKey privateKey,
                                    java.lang.String src)
                             throws java.lang.Exception

SM2私钥签名.

参数:

privateKey - private key

src - source data String

返回:

signature

抛出:

java.lang.Exception - signature exception

verify

public static boolean verify(java.security.PublicKey publicKey,
                             java.lang.String sign,
                             java.lang.String src)

SM2公钥验签.

参数:

publicKey - public key

src - source data String

sign - signature

返回:

verify result: true or false

encrypt

public static java.lang.String encrypt(java.lang.String publicKey,
                                       java.lang.String data)

参数:

publicKey -

data -

返回:

String

decrypt

public static java.lang.String decrypt(java.lang.String privateKey,
                                       java.lang.String data)

参数:

privateKey -

data -

返回:

String

sign

public static java.lang.String sign(java.lang.String privateKeyStr,
                                    java.lang.String data)

参数:

privateKeyStr -

data -

返回:

String

verify

public static boolean verify(java.lang.String publickey,
                             java.lang.String signature,
                             java.lang.String data)

参数:

publickey -

signature -

data -

返回:

boolean