org.aoju.bus.crypto.algorithm.asymmetric

Class Asymmetric

java.lang.Object

org.aoju.bus.crypto.algorithm.asymmetric.Keys<T>

org.aoju.bus.crypto.algorithm.asymmetric.Safety<Asymmetric>

org.aoju.bus.crypto.algorithm.asymmetric.Asymmetric

Direct Known Subclasses:

RSA

public class Asymmetric
extends Safety<Asymmetric>

非对称加密算法

 1、签名：使用私钥加密,公钥解密
 用于让所有公钥所有者验证私钥所有者的身份并且用来防止私钥所有者发布的内容被篡改,但是不用来保证内容不被他人获得

 2、加密：用公钥加密,私钥解密
 用于向公钥所有者发布信息,这个信息可能被他人篡改,但是无法被他人获得
 

Since:

JDK 1.8+

Version:

5.5.3

Author:

Kimi Liu

Field Summary

Fields

Modifier and Type	Field and Description
protected Cipher	cipher Cipher负责完成加密或解密工作
protected int	decryptBlockSize 解密的块大小
protected int	encryptBlockSize 加密的块大小

Fields inherited from class org.aoju.bus.crypto.algorithm.asymmetric.Keys

algorithm, lock, privateKey, publicKey

Constructor Summary

Constructors

Constructor and Description
Asymmetric(String algorithm) 构造,创建新的私钥公钥对
Asymmetric(String algorithm, byte[] privateKey, byte[] publicKey) 构造
Asymmetric(String algorithm, PrivateKey privateKey, PublicKey publicKey) 构造
Asymmetric(String algorithm, String privateKey, String publicKey) 构造 私钥和公钥同时为空时生成一对新的私钥和公钥 私钥和公钥可以单独传入一个,如此则只能使用此钥匙来做加密或者解密

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] data, KeyType keyType) 解密
byte[]	encrypt(byte[] data, KeyType keyType) 加密
Cipher	getClipher() 获得加密或解密器
int	getDecryptBlockSize() 获取解密块大小
int	getEncryptBlockSize() 获取加密块大小
Asymmetric	init(String algorithm, PrivateKey privateKey, PublicKey publicKey) 初始化 私钥和公钥同时为空时生成一对新的私钥和公钥 私钥和公钥可以单独传入一个,如此则只能使用此钥匙来做加密（签名）或者解密（校验）
protected void	initCipher() 初始化Cipher,默认尝试加载BC库
void	setDecryptBlockSize(int decryptBlockSize) 设置解密块大小
void	setEncryptBlockSize(int encryptBlockSize) 设置加密块大小

Methods inherited from class org.aoju.bus.crypto.algorithm.asymmetric.Safety

decrypt, decrypt, decryptFromBcd, decryptFromBcd, decryptStr, decryptStr, decryptStrFromBcd, decryptStrFromBcd, encrypt, encrypt, encrypt, encrypt, encryptBase64, encryptBase64, encryptBase64, encryptBase64, encryptBcd, encryptBcd, encryptHex, encryptHex, encryptHex, encryptHex

Methods inherited from class org.aoju.bus.crypto.algorithm.asymmetric.Keys

getKeyByType, getPrivateKey, getPrivateKeyBase64, getPublicKey, getPublicKeyBase64, initKeys, setPrivateKey, setPublicKey

Methods inherited from class java.lang.Object

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

Field Detail

cipher

protected Cipher cipher

Cipher负责完成加密或解密工作

encryptBlockSize

protected int encryptBlockSize

加密的块大小

decryptBlockSize

protected int decryptBlockSize

解密的块大小

Constructor Detail

Asymmetric

public Asymmetric(String algorithm)

构造,创建新的私钥公钥对

Parameters:

algorithm - 算法

Asymmetric

public Asymmetric(String algorithm,
                  String privateKey,
                  String publicKey)

构造 私钥和公钥同时为空时生成一对新的私钥和公钥
私钥和公钥可以单独传入一个,如此则只能使用此钥匙来做加密或者解密

Parameters:

algorithm - 算法

privateKey - 私钥Hex或Base64表示

publicKey - 公钥Hex或Base64表示

Asymmetric

public Asymmetric(String algorithm,
                  byte[] privateKey,
                  byte[] publicKey)

构造

私钥和公钥同时为空时生成一对新的私钥和公钥
私钥和公钥可以单独传入一个,如此则只能使用此钥匙来做加密或者解密

Parameters:

algorithm - 算法

privateKey - 私钥

publicKey - 公钥

Asymmetric

public Asymmetric(String algorithm,
                  PrivateKey privateKey,
                  PublicKey publicKey)

构造

私钥和公钥同时为空时生成一对新的私钥和公钥
私钥和公钥可以单独传入一个,如此则只能使用此钥匙来做加密或者解密

Parameters:

algorithm - 算法

privateKey - 私钥

publicKey - 公钥

Since:

3.1.1

Method Detail

getEncryptBlockSize

public int getEncryptBlockSize()

获取加密块大小

Returns:

加密块大小

setEncryptBlockSize

public void setEncryptBlockSize(int encryptBlockSize)

设置加密块大小

Parameters:

encryptBlockSize - 加密块大小

getDecryptBlockSize

public int getDecryptBlockSize()

获取解密块大小

Returns:

解密块大小

setDecryptBlockSize

public void setDecryptBlockSize(int decryptBlockSize)

设置解密块大小

Parameters:

decryptBlockSize - 解密块大小

init

public Asymmetric init(String algorithm,
                       PrivateKey privateKey,
                       PublicKey publicKey)

Description copied from class: Keys

初始化
私钥和公钥同时为空时生成一对新的私钥和公钥
私钥和公钥可以单独传入一个,如此则只能使用此钥匙来做加密（签名）或者解密（校验）

Overrides:

init in class Keys<Asymmetric>

Parameters:

algorithm - 算法

privateKey - 私钥

publicKey - 公钥

Returns:

this

encrypt

public byte[] encrypt(byte[] data,
                      KeyType keyType)

加密

Specified by:

encrypt in class Safety<Asymmetric>

Parameters:

data - 被加密的bytes

keyType - 私钥或公钥 KeyType

Returns:

加密后的bytes

decrypt

public byte[] decrypt(byte[] data,
                      KeyType keyType)

解密

Specified by:

decrypt in class Safety<Asymmetric>

Parameters:

data - 被解密的bytes

keyType - 私钥或公钥 KeyType

Returns:

解密后的bytes

getClipher

public Cipher getClipher()

获得加密或解密器

Returns:

加密或解密

initCipher

protected void initCipher()

初始化Cipher,默认尝试加载BC库