cn.xanderye.util

类 RSAUtil

java.lang.Object

cn.xanderye.util.RSAUtil

public class RSAUtil
extends Object

Created on 2020/5/19.

作者:

XanderYe

构造器概要

构造器

构造器和说明
RSAUtil()

方法概要

限定符和类型	方法和说明
static byte[]	decrypt(RSAPrivateKey privateKey, byte[] cipherData) 使用私钥解密
static byte[]	decrypt(RSAPublicKey publicKey, byte[] cipherData) 使用公钥解密
static byte[]	encrypt(RSAPrivateKey privateKey, byte[] plainTextData) 使用私钥加密
static byte[]	encrypt(RSAPublicKey publicKey, byte[] plainTextData) 使用公钥加密
static void	genKeyPair(String filePath) 随机生成密钥对
static String	loadPrivateKeyByFile(String path) 从文件中加载私钥
static RSAPrivateKey	loadPrivateKeyByStr(String privateKeyStr) 从字符串中加载私钥
static String	loadPublicKeyByFile(String path) 从文件中加载公钥
static RSAPublicKey	loadPublicKeyByStr(String publicKeyStr) 从字符串中加载公钥

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

RSAUtil

public RSAUtil()

方法详细资料

genKeyPair

public static void genKeyPair(String filePath)
                       throws IOException

随机生成密钥对

参数:

filePath -

抛出:

IOException

loadPublicKeyByFile

public static String loadPublicKeyByFile(String path)
                                  throws IOException

从文件中加载公钥

参数:

path -

返回:

java.lang.String

抛出:

IOException

loadPublicKeyByStr

public static RSAPublicKey loadPublicKeyByStr(String publicKeyStr)
                                       throws NoSuchAlgorithmException,
                                              InvalidKeySpecException

从字符串中加载公钥

参数:

publicKeyStr -

返回:

java.security.interfaces.RSAPublicKey

抛出:

NoSuchAlgorithmException

InvalidKeySpecException

loadPrivateKeyByFile

public static String loadPrivateKeyByFile(String path)
                                   throws IOException

从文件中加载私钥

参数:

path -

返回:

java.lang.String

抛出:

IOException

loadPrivateKeyByStr

public static RSAPrivateKey loadPrivateKeyByStr(String privateKeyStr)
                                         throws NoSuchAlgorithmException,
                                                InvalidKeySpecException

从字符串中加载私钥

参数:

privateKeyStr -

返回:

java.security.interfaces.RSAPrivateKey

抛出:

NoSuchAlgorithmException

InvalidKeySpecException

encrypt

public static byte[] encrypt(RSAPublicKey publicKey,
                             byte[] plainTextData)
                      throws NoSuchAlgorithmException,
                             NoSuchPaddingException,
                             InvalidKeyException,
                             IllegalBlockSizeException,
                             BadPaddingException

使用公钥加密

参数:

publicKey -

plainTextData -

返回:

byte[]

抛出:

NoSuchAlgorithmException

NoSuchPaddingException

InvalidKeyException

IllegalBlockSizeException

BadPaddingException

encrypt

public static byte[] encrypt(RSAPrivateKey privateKey,
                             byte[] plainTextData)
                      throws NoSuchAlgorithmException,
                             NoSuchPaddingException,
                             InvalidKeyException,
                             IllegalBlockSizeException,
                             BadPaddingException

使用私钥加密

参数:

privateKey -

plainTextData -

返回:

byte[]

抛出:

NoSuchAlgorithmException

NoSuchPaddingException

InvalidKeyException

IllegalBlockSizeException

BadPaddingException

decrypt

public static byte[] decrypt(RSAPrivateKey privateKey,
                             byte[] cipherData)
                      throws NoSuchAlgorithmException,
                             NoSuchPaddingException,
                             InvalidKeyException,
                             IllegalBlockSizeException,
                             BadPaddingException

使用私钥解密

参数:

privateKey -

cipherData -

返回:

byte[]

抛出:

NoSuchAlgorithmException

NoSuchPaddingException

InvalidKeyException

IllegalBlockSizeException

BadPaddingException

decrypt

public static byte[] decrypt(RSAPublicKey publicKey,
                             byte[] cipherData)
                      throws NoSuchAlgorithmException,
                             NoSuchPaddingException,
                             InvalidKeyException,
                             IllegalBlockSizeException,
                             BadPaddingException

使用公钥解密

参数:

publicKey -

cipherData -

返回:

byte[]

抛出:

NoSuchAlgorithmException

NoSuchPaddingException

InvalidKeyException

IllegalBlockSizeException

BadPaddingException