Package com.codingapi.springboot.framework.crypto

Class RSA

java.lang.Object

com.codingapi.springboot.framework.crypto.RSA

public class RSA
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final String	KEY_ALGORITHM

Constructor Summary

Constructors

Constructor	Description
RSA()
RSA(byte[] publicKey)
RSA(byte[] privateKey, byte[] publicKey)
RSA(KeyPair keyPair)
RSA(PrivateKey privateKey, PublicKey publicKey)

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(byte[] text)	Decrypt text using private key
byte[]	encrypt(byte[] text)	Encrypt a text using public key.
KeyPair	generateKey()	Generate key which contains a pair of privae and public key using 2048 bytes
byte[]	getPrivateKey()
byte[]	getPublicKey()

Methods inherited from class java.lang.Object

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

Field Details

KEY_ALGORITHM

public static final String KEY_ALGORITHM

See Also:

• Constant Field Values

Constructor Details

RSA

public RSA()
    throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

RSA

public RSA(KeyPair keyPair)

RSA

public RSA(PrivateKey privateKey,
 PublicKey publicKey)

RSA

public RSA(byte[] privateKey,
 byte[] publicKey)
    throws Exception

Throws:

Exception

RSA

public RSA(byte[] publicKey)
    throws Exception

Throws:

Exception

Method Details

generateKey

public KeyPair generateKey()
                    throws NoSuchAlgorithmException

Generate key which contains a pair of privae and public key using 2048 bytes

Returns:

key pair

Throws:

NoSuchAlgorithmException

getPrivateKey

public byte[] getPrivateKey()

getPublicKey

public byte[] getPublicKey()

encrypt

public byte[] encrypt(byte[] text)
               throws Exception

Encrypt a text using public key.

Parameters:

text - The original unencrypted text

Returns:

Encrypted text

Throws:

Exception

decrypt

public byte[] decrypt(byte[] text)
               throws Exception

Decrypt text using private key

Parameters:

text - The encrypted text

Returns:

The unencrypted text

Throws:

Exception