org.anyline.net

类 RSAUtil

java.lang.Object

org.anyline.net.RSAUtil

public class RSAUtil
extends Object

字段概要

字段

限定符和类型	字段和说明
static String	CHARSET
static String	RSA_ALGORITHM
static String	SIGNATURE_ALGORITHM

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 Map<String,String>	createKeys(int keySize)
static RSAPrivateKey	getPrivateKey(File file, String keyAlgorithm) 从文件中提取私钥
static RSAPrivateKey	getPrivateKey(InputStream inputStream, String keyAlgorithm)
static RSAPrivateKey	getPrivateKey(String privateKey) 得到私钥
static RSAPublicKey	getPublicKey(File file)
static RSAPublicKey	getPublicKey(InputStream inputStream)
static RSAPublicKey	getPublicKey(String publicKey) 得到公钥
static String	privateDecrypt(String data, RSAPrivateKey privateKey) 私钥解密
static String	privateEncrypt(String data, RSAPrivateKey privateKey) 私钥加密
static String	publicDecrypt(String data, RSAPublicKey publicKey) 公钥解密
static String	publicEncrypt(String data, RSAPublicKey publicKey) 公钥加密
static String	sign(byte[] data, String privateKey) 用私钥对信息生成数字签名
static String	sign(String data, String privateKey)
static boolean	verify(byte[] data, String publicKey, String sign) 校验数字签名
static boolean	verify(String data, String publicKey, String sign)

从类继承的方法 java.lang.Object

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

字段详细资料

CHARSET

public static final String CHARSET

另请参阅:

常量字段值

RSA_ALGORITHM

public static final String RSA_ALGORITHM

另请参阅:

常量字段值

SIGNATURE_ALGORITHM

public static final String SIGNATURE_ALGORITHM

另请参阅:

常量字段值

构造器详细资料

RSAUtil

public RSAUtil()

方法详细资料

createKeys

public static Map<String,String> createKeys(int keySize)

参数:

keySize - 密钥长度

返回:

Map

getPublicKey

public static RSAPublicKey getPublicKey(String publicKey)
                                 throws NoSuchAlgorithmException,
                                        InvalidKeySpecException

得到公钥

参数:

publicKey - 密钥字符串（经过base64编码）

返回:

RSAPublicKey

抛出:

NoSuchAlgorithmException - NoSuchAlgorithmException

InvalidKeySpecException - InvalidKeySpecException

getPrivateKey

public static RSAPrivateKey getPrivateKey(String privateKey)
                                   throws NoSuchAlgorithmException,
                                          InvalidKeySpecException

得到私钥

参数:

privateKey - 密钥字符串（经过base64编码）

返回:

RSAPrivateKey

抛出:

NoSuchAlgorithmException - NoSuchAlgorithmException

InvalidKeySpecException - InvalidKeySpecException

publicEncrypt

public static String publicEncrypt(String data,
                                   RSAPublicKey publicKey)
                            throws Exception

公钥加密

参数:

data - data

publicKey - publicKey

返回:

String

抛出:

Exception - Exception

privateDecrypt

public static String privateDecrypt(String data,
                                    RSAPrivateKey privateKey)
                             throws Exception

私钥解密

参数:

data - data

privateKey - privateKey

返回:

String

抛出:

Exception - Exception

privateEncrypt

public static String privateEncrypt(String data,
                                    RSAPrivateKey privateKey)
                             throws Exception

私钥加密

参数:

data - data

privateKey - privateKey

返回:

String

抛出:

Exception - Exception

publicDecrypt

public static String publicDecrypt(String data,
                                   RSAPublicKey publicKey)
                            throws Exception

公钥解密

参数:

data - data

publicKey - publicKey

返回:

String

抛出:

Exception - Exception

sign

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

用私钥对信息生成数字签名

参数:

data - 已加密数据

privateKey - 私钥(BASE64编码)

返回:

String

抛出:

Exception - Exception

sign

public static String sign(String data,
                          String privateKey)
                   throws Exception

抛出:

Exception

verify

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

校验数字签名

参数:

data - 已加密数据

publicKey - 公钥(BASE64编码)

sign - 数字签名

返回:

boolean

抛出:

Exception - Exception

verify

public static boolean verify(String data,
                             String publicKey,
                             String sign)
                      throws Exception

抛出:

Exception

getPrivateKey

public static RSAPrivateKey getPrivateKey(File file,
                                          String keyAlgorithm)

从文件中提取私钥

参数:

file - file

keyAlgorithm - keyAlgorithm

返回:

RSAPrivateKey

getPublicKey

public static RSAPublicKey getPublicKey(File file)

getPublicKey

public static RSAPublicKey getPublicKey(InputStream inputStream)
                                 throws Exception

抛出:

Exception

getPrivateKey

public static RSAPrivateKey getPrivateKey(InputStream inputStream,
                                          String keyAlgorithm)
                                   throws Exception

抛出:

Exception