cn.sucang.core.util

Class EncryptUtils

java.lang.Object

cn.sucang.core.util.EncryptUtils

public final class EncryptUtils
extends java.lang.Object

对RSA算法的加减密

Author:

yeriwei

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	KEY_ALGORITHM KEY_ALGORITHM = RSA
static java.lang.String	SIGNATURE_ALGORITHM SIGNATURE_ALGORITHM = MD5withRSA | SHA1WithRSA

Constructor Summary

Constructors

Constructor and Description
EncryptUtils()

Method Summary

Modifier and Type	Method and Description
static byte[]	decryptByPrivateKey(byte[] data, java.lang.String key) 解密 用私钥解密
static byte[]	decryptByPublicKey(byte[] data, java.lang.String key) 解密 用公钥解密
static byte[]	encodeBASE64(byte[] key) BASE64加密
static byte[]	encryptByPrivateKey(byte[] data, java.lang.String key) 加密 用私钥加密
static byte[]	encryptByPublicKey(byte[] data, java.lang.String key) 加密 用公钥加密
static byte[]	getFromBASE64(java.lang.String key) BASE64解密
static java.lang.String	getPrivateKey(java.util.Map<java.lang.String,java.lang.Object> keyMap) 取得私钥
static java.lang.String	getPublicKey(java.util.Map<java.lang.String,java.lang.Object> keyMap) 取得公钥
static java.util.Map<java.lang.String,java.lang.Object>	initKey() 初始化密钥
static void	main(java.lang.String[] args)
static java.lang.String	sign(byte[] data, java.lang.String privateKey) 用私钥对信息生成数字签名
static void	test1(java.lang.String[] args)
static boolean	verify(byte[] data, java.lang.String publicKey, java.lang.String sign) 校验数字签名

Methods inherited from class java.lang.Object

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

Field Detail

KEY_ALGORITHM

public static final java.lang.String KEY_ALGORITHM

KEY_ALGORITHM = RSA

See Also:

Constant Field Values

SIGNATURE_ALGORITHM

public static final java.lang.String SIGNATURE_ALGORITHM

SIGNATURE_ALGORITHM = MD5withRSA | SHA1WithRSA

See Also:

Constant Field Values

Constructor Detail

EncryptUtils

public EncryptUtils()

Method Detail

sign

public static java.lang.String sign(byte[] data,
                                    java.lang.String privateKey)
                             throws java.lang.Exception

用私钥对信息生成数字签名

Parameters:

data - 加密数据

privateKey - 私钥

Returns:

Throws:

java.lang.Exception

verify

public static boolean verify(byte[] data,
                             java.lang.String publicKey,
                             java.lang.String sign)
                      throws java.lang.Exception

校验数字签名

Parameters:

data - 加密数据

publicKey - 公钥

sign - 数字签名

Returns:

校验成功返回true 失败返回false

Throws:

java.lang.Exception

decryptByPrivateKey

public static byte[] decryptByPrivateKey(byte[] data,
                                         java.lang.String key)
                                  throws java.lang.Exception

解密
用私钥解密

Parameters:

data -

key -

Returns:

Throws:

java.lang.Exception

decryptByPublicKey

public static byte[] decryptByPublicKey(byte[] data,
                                        java.lang.String key)
                                 throws java.lang.Exception

解密
用公钥解密

Parameters:

data -

key -

Returns:

Throws:

java.lang.Exception

encryptByPublicKey

public static byte[] encryptByPublicKey(byte[] data,
                                        java.lang.String key)
                                 throws java.lang.Exception

加密
用公钥加密

Parameters:

data -

key -

Returns:

Throws:

java.lang.Exception

encryptByPrivateKey

public static byte[] encryptByPrivateKey(byte[] data,
                                         java.lang.String key)
                                  throws java.lang.Exception

加密
用私钥加密

Parameters:

data -

key -

Returns:

Throws:

java.lang.Exception

getPrivateKey

public static java.lang.String getPrivateKey(java.util.Map<java.lang.String,java.lang.Object> keyMap)
                                      throws java.lang.Exception

取得私钥

Parameters:

keyMap -

Returns:

Throws:

java.lang.Exception

getFromBASE64

public static byte[] getFromBASE64(java.lang.String key)
                            throws java.lang.Exception

BASE64解密

Parameters:

key -

Returns:

Throws:

java.lang.Exception

encodeBASE64

public static byte[] encodeBASE64(byte[] key)
                           throws java.lang.Exception

BASE64加密

Parameters:

key -

Returns:

Throws:

java.lang.Exception

getPublicKey

public static java.lang.String getPublicKey(java.util.Map<java.lang.String,java.lang.Object> keyMap)
                                     throws java.lang.Exception

取得公钥

Parameters:

keyMap -

Returns:

Throws:

java.lang.Exception

initKey

public static java.util.Map<java.lang.String,java.lang.Object> initKey()
                                                                throws java.lang.Exception

初始化密钥

Returns:

Throws:

java.lang.Exception

main

public static void main(java.lang.String[] args)

test1

public static void test1(java.lang.String[] args)