top.bayberry.core.tools

类 RSAUtils

java.lang.Object

top.bayberry.core.tools.RSAUtils

public class RSAUtils
extends Object

Created by lelouch on 16-12-12.

RSA公钥/私钥/签名工具包

字符串格式的密钥在未在特殊说明情况下都为BASE64编码格式
由于非对称加密速度极其缓慢，一般文件不使用它来加密而是使用对称加密，
非对称加密算法可以用来对对称加密的密钥加密，这样保证密钥的安全也就保证了数据的安全

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	RSAUtils.cerIssuer 颁发者名称
static class	RSAUtils.cerSubject 主体名

字段概要

字段

限定符和类型	字段和说明
static String	KEY_ALGORITHM 加密算法RSA
static String	SIGNATURE_ALGORITHM 签名算法
static String	SIGNATURE_ALGORITHM_SHA1WithRSA

构造器概要

构造器

构造器和说明
RSAUtils()

方法概要

限定符和类型	方法和说明
static byte[]	decryptByPrivateKey(byte[] encryptedData, String privateKey) 私钥解密
static byte[]	decryptByPublicKey(byte[] encryptedData, String publicKey) 公钥解密
static String	decryptStringByPrivateKey(String encryptedData, String privateKey) 私钥解密
static byte[]	encryptByPrivateKey(byte[] data, String privateKey) 私钥加密
static byte[]	encryptByPublicKey(byte[] data, String publicKey) 公钥加密
static String	encryptStringByPublicKey(byte[] data, String publicKey) 公钥加密
static void	generateCer(File flie_cert, String[] info, PrivateKey keyPrivate, PublicKey keyPublic) 生成 cer String[] info = {"huahua_user","hnu","university","china","hunan","changsha","111111","11111111","1"};
static void	generatePfx(String strPassword) 生成 pfx
static Map<String,Object>	genKeyPair() 生成密钥对(公钥和私钥)
static Map<String,Object>	genKeyPair(String algorithm) 生成密钥对(公钥和私钥)
static Map<String,Object>	GetCertformCer(File strCer) cer 读取
static Map<String,Object>	GetCertformPfx(File strPfx, String strPassword) pfx 读取
static String	getPrivateKey(Map<String,Object> keyMap) 获取私钥
static PrivateKey	getPrivateKey(String key) String to PrivateKey
static PrivateKey	getPrivateKey(String key, String algorithm) String to PrivateKey
static String	getPublicKey(Map<String,Object> keyMap) 获取公钥
static PublicKey	getPublicKey(String key) String to PublicKey
static PublicKey	getPublicKey(String key, String algorithm) String to PublicKey
static void	keyWireFile(File file, String keystore) 将密钥对写入到文件
static void	main(String[] args)
static String	sign(byte[] data, String privateKey) 用私钥对信息生成数字签名
static String	sign(byte[] data, String privateKey, String algorithm) 用私钥对信息生成数字签名
static boolean	verify(byte[] data, String publicKey, String sign) 校验数字签名
static boolean	verify(byte[] data, String publicKey, String sign, String algorithm)
static boolean	verify(String str, File CERT, String sign) 验签
static boolean	verify(String str, File CERT, String sign, String algorithm) 验签
static boolean	verifyCertificate(Date date, Certificate certificate) 验证证书是否过期或无效

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

KEY_ALGORITHM

public static final String KEY_ALGORITHM

加密算法RSA

另请参阅:

常量字段值

SIGNATURE_ALGORITHM

public static final String SIGNATURE_ALGORITHM

签名算法

另请参阅:

常量字段值

SIGNATURE_ALGORITHM_SHA1WithRSA

public static final String SIGNATURE_ALGORITHM_SHA1WithRSA

另请参阅:

常量字段值

构造器详细资料

RSAUtils

public RSAUtils()

方法详细资料

genKeyPair

public static Map<String,Object> genKeyPair()
                                     throws Exception

生成密钥对(公钥和私钥)

返回:

抛出:

Exception

genKeyPair

public static Map<String,Object> genKeyPair(String algorithm)
                                     throws Exception

生成密钥对(公钥和私钥)

返回:

抛出:

Exception

sign

public static String sign(byte[] data,
                          String privateKey,
                          String algorithm)
                   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:

抛出:

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:

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:

抛出:

Exception

verify

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

参数:

data - 已加密数据

publicKey - 公钥(BASE64编码)

sign - 数字签名

algorithm -

返回:

抛出:

Exception

verify

public static boolean verify(String str,
                             File CERT,
                             String sign)
                      throws Exception

验签

抛出:

Exception

verify

public static boolean verify(String str,
                             File CERT,
                             String sign,
                             String algorithm)
                      throws Exception

验签

抛出:

Exception

decryptByPrivateKey

public static byte[] decryptByPrivateKey(byte[] encryptedData,
                                         String privateKey)
                                  throws Exception

私钥解密

参数:

encryptedData - 已加密数据

privateKey - 私钥(BASE64编码)

返回:

抛出:

Exception

decryptByPublicKey

public static byte[] decryptByPublicKey(byte[] encryptedData,
                                        String publicKey)
                                 throws Exception

公钥解密

参数:

encryptedData - 已加密数据

publicKey - 公钥(BASE64编码)

返回:

抛出:

Exception

encryptByPublicKey

public static byte[] encryptByPublicKey(byte[] data,
                                        String publicKey)
                                 throws Exception

公钥加密

参数:

data - 源数据

publicKey - 公钥(BASE64编码)

返回:

抛出:

Exception

encryptByPrivateKey

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

私钥加密

参数:

data - 源数据

privateKey - 私钥(BASE64编码)

返回:

抛出:

Exception

getPrivateKey

public static String getPrivateKey(Map<String,Object> keyMap)
                            throws Exception

获取私钥

参数:

keyMap - 密钥对

返回:

抛出:

Exception

getPublicKey

public static String getPublicKey(Map<String,Object> keyMap)
                           throws Exception

获取公钥

参数:

keyMap - 密钥对

返回:

抛出:

Exception

encryptStringByPublicKey

public static String encryptStringByPublicKey(byte[] data,
                                              String publicKey)
                                       throws Exception

公钥加密

参数:

data - 源数据

publicKey - 公钥(BASE64编码)

返回:

抛出:

Exception

decryptStringByPrivateKey

public static String decryptStringByPrivateKey(String encryptedData,
                                               String privateKey)
                                        throws Exception

私钥解密

参数:

encryptedData - 已加密数据

privateKey - 私钥(BASE64编码)

返回:

抛出:

Exception

keyWireFile

public static void keyWireFile(File file,
                               String keystore)
                        throws IOException

将密钥对写入到文件

参数:

file -

keystore -

抛出:

IOException

generateCer

public static void generateCer(File flie_cert,
                               String[] info,
                               PrivateKey keyPrivate,
                               PublicKey keyPublic)
                        throws InvalidKeyException,
                               NoSuchProviderException,
                               SecurityException,
                               SignatureException,
                               IOException,
                               CertificateEncodingException

生成 cer

String[] info = {"huahua_user","hnu","university","china","hunan","changsha","111111","11111111","1"};

参数:

keyPair_root -

keyPair_user -

info -

keyPrivate -

keyPublic -

抛出:

InvalidKeyException

NoSuchProviderException

SecurityException

SignatureException

IOException

CertificateEncodingException

generatePfx

public static void generatePfx(String strPassword)
                        throws KeyStoreException,
                               NoSuchAlgorithmException,
                               SignatureException,
                               InvalidKeyException,
                               IOException,
                               CertificateException

生成 pfx

参数:

strPassword -

抛出:

KeyStoreException

NoSuchAlgorithmException

SignatureException

InvalidKeyException

IOException

CertificateException

GetCertformPfx

public static Map<String,Object> GetCertformPfx(File strPfx,
                                                String strPassword)

pfx 读取

参数:

strPfx -

strPassword -

返回:

GetCertformCer

public static Map<String,Object> GetCertformCer(File strCer)

cer 读取

参数:

strCer -

返回:

getPublicKey

public static PublicKey getPublicKey(String key,
                                     String algorithm)
                              throws Exception

String to PublicKey

参数:

key -

algorithm -

返回:

抛出:

Exception

getPublicKey

public static PublicKey getPublicKey(String key)
                              throws Exception

String to PublicKey

参数:

key -

返回:

抛出:

Exception

getPrivateKey

public static PrivateKey getPrivateKey(String key,
                                       String algorithm)
                                throws Exception

String to PrivateKey

参数:

key -

algorithm -

返回:

抛出:

Exception

getPrivateKey

public static PrivateKey getPrivateKey(String key)
                                throws Exception

String to PrivateKey

参数:

key -

返回:

抛出:

Exception

verifyCertificate

public static boolean verifyCertificate(Date date,
                                        Certificate certificate)

验证证书是否过期或无效

参数:

date -

certificate -

返回:

main

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

抛出:

Exception