程序包 com.xwl41.common.basic.helper

类 RSAHelper

java.lang.Object

com.xwl41.common.basic.helper.RSAHelper

public class RSAHelper
extends Object

RSAHelper RSA密钥使用相关

构造器概要

构造器

构造器	说明
RSAHelper()

方法概要

修饰符和类型	方法	说明
static boolean	check(String plainText, String encodedSign, String encodedPublicKey)
static boolean	check(String plainText, String encodedSign, String encodedPublicKey, String signAlgorithm)	公钥验签
static boolean	check(String plainText, String encodedSign, PublicKey publicKey)
static boolean	check(String plainText, String encodedSign, PublicKey publicKey, String signAlgorithm)	公钥验签
static RSAPrivateKey	convertToPrivateKey(String encodedBase64KeyStr)	将字符串格式私钥转换为RSA私钥对象
static RSAPublicKey	convertToPublicKey(String encodedBase64KeyStr)	将字符串格式公钥转换为RSA公钥对象
static byte[]	decrypt(PrivateKey key, byte[] cipherData)
static String	decryptFromBase64String(PrivateKey key, String base64Ciphertext)
static byte[]	encrypt(PublicKey key, byte[] plainData)
static String	encryptToBase64String(String publicKeyStr, String plaintext)
static String	encryptToBase64String(String publicKeyStr, String plaintext, Charset charset)
static String	encryptToBase64String(PublicKey key, String plaintext)
static String	encryptToBase64String(PublicKey key, String plaintext, Charset charset)
static Map<String,Key>	genRSAKeyPair(int keySize)	生成RSA密钥对
static Map<String,String>	genRSAKeyStringPair(int keySize)
static RSAPrivateKey	getRSAPrivateKey(String keyFileContent)	从指定文件读取字符串格式私钥并转换为私钥对象
static RSAPublicKey	getRSAPublicKey(String keyFileContent)	从指定文件读取字符串格式公钥并转换为公钥对象
static boolean	saveKeyPair(Map<String,Key> keyMap, String path)	保存密钥对到指定目录
static String	sign(String plainText, String privateKey)
static String	sign(String plainText, String privateKey, String signAlgorithm)
static String	sign(String plainText, PrivateKey privateKey)
static String	sign(String plainText, PrivateKey privateKey, String signAlgorithm)
static String	toEncodedString(Key key)

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

RSAHelper

public RSAHelper()

方法详细资料

genRSAKeyPair

public static Map<String,Key> genRSAKeyPair(int keySize)
                                           throws NoSuchAlgorithmException

生成RSA密钥对

参数:

keySize - 密钥位数

返回:

生成的密钥对

抛出:

NoSuchAlgorithmException - 无指定算法异常

genRSAKeyStringPair

public static Map<String,String> genRSAKeyStringPair(int keySize)
                                                    throws NoSuchAlgorithmException

抛出:

NoSuchAlgorithmException

saveKeyPair

public static boolean saveKeyPair(Map<String,Key> keyMap,
                                  String path)

保存密钥对到指定目录

参数:

keyMap - 密钥对

path - 要保存密钥对文件的路径

返回:

保存是否成功

convertToPublicKey

public static RSAPublicKey convertToPublicKey(String encodedBase64KeyStr)

将字符串格式公钥转换为RSA公钥对象

参数:

encodedBase64KeyStr - 字符串格式公钥

返回:

返回RSA公钥对象

convertToPrivateKey

public static RSAPrivateKey convertToPrivateKey(String encodedBase64KeyStr)

将字符串格式私钥转换为RSA私钥对象

参数:

encodedBase64KeyStr - 字符串格式私钥

返回:

RSA私钥对象

getRSAPublicKey

public static RSAPublicKey getRSAPublicKey(String keyFileContent)

从指定文件读取字符串格式公钥并转换为公钥对象

参数:

keyFileContent - 完整密钥文件文本内容

返回:

公钥对象

getRSAPrivateKey

public static RSAPrivateKey getRSAPrivateKey(String keyFileContent)

从指定文件读取字符串格式私钥并转换为私钥对象

参数:

keyFileContent - 完整密钥文件文本内容

返回:

私钥对象

decrypt

public static byte[] decrypt(PrivateKey key,
                             byte[] cipherData)

decryptFromBase64String

public static String decryptFromBase64String(PrivateKey key,
                                             String base64Ciphertext)

encrypt

public static byte[] encrypt(PublicKey key,
                             byte[] plainData)

encryptToBase64String

public static String encryptToBase64String(PublicKey key,
                                           String plaintext)

encryptToBase64String

public static String encryptToBase64String(PublicKey key,
                                           String plaintext,
                                           Charset charset)

encryptToBase64String

public static String encryptToBase64String(String publicKeyStr,
                                           String plaintext)

encryptToBase64String

public static String encryptToBase64String(String publicKeyStr,
                                           String plaintext,
                                           Charset charset)

sign

public static String sign(String plainText,
                          String privateKey,
                          String signAlgorithm)

sign

public static String sign(String plainText,
                          PrivateKey privateKey,
                          String signAlgorithm)

sign

public static String sign(String plainText,
                          String privateKey)

sign

public static String sign(String plainText,
                          PrivateKey privateKey)

check

public static boolean check(String plainText,
                            String encodedSign,
                            String encodedPublicKey,
                            String signAlgorithm)

公钥验签

参数:

plainText - 明文

encodedSign - 使用Base64编码的签名

encodedPublicKey - 使用Base64编码的公钥

signAlgorithm - 签名算法(MD5withRSA/SHA1withRSA)

返回:

验签结果

check

public static boolean check(String plainText,
                            String encodedSign,
                            String encodedPublicKey)

check

public static boolean check(String plainText,
                            String encodedSign,
                            PublicKey publicKey,
                            String signAlgorithm)

公钥验签

参数:

plainText - 明文

encodedSign - 使用Base64编码的签名

publicKey - 公钥

signAlgorithm - 签名算法(MD5withRSA/SHA1withRSA)

返回:

验签结果

check

public static boolean check(String plainText,
                            String encodedSign,
                            PublicKey publicKey)

toEncodedString

public static String toEncodedString(Key key)