Package io.github.cdimascio.ecies

Class Ecies

java.lang.Object

io.github.cdimascio.ecies.Ecies

public class Ecies
extends Object

Constructor Summary

Constructors

Constructor	Description
Ecies()

Method Summary

Modifier and Type	Method	Description
static byte[]	decrypt(byte[] privateKeyBytes, byte[] cipherBytes)	Decrypts given ciphertext with a given private key
static String	decrypt(String privateKeyHex, String ciphertext)	Decrypts given ciphertext with a given private key
static byte[]	encrypt(byte[] publicKeyBytes, byte[] message)	Encrypts a given message with a given public key
static String	encrypt(String publicKeyHex, String message)	Encrypts a given message with a given public key in hex
static ECKeyPair	generateEcKeyPair()	Generates new key pair consists of ECPublicKey and ECPrivateKey

Methods inherited from class java.lang.Object

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

Constructor Detail

Ecies

public Ecies()

Method Detail

generateEcKeyPair

public static ECKeyPair generateEcKeyPair()
                                   throws NoSuchAlgorithmException,
                                          InvalidAlgorithmParameterException

Generates new key pair consists of ECPublicKey and ECPrivateKey

Returns:

new EC key pair

Throws:

NoSuchAlgorithmException

InvalidAlgorithmParameterException

encrypt

public static String encrypt(String publicKeyHex,
                             String message)
                      throws org.bouncycastle.crypto.InvalidCipherTextException,
                             InvalidAlgorithmParameterException,
                             NoSuchAlgorithmException,
                             InvalidKeySpecException

Encrypts a given message with a given public key in hex

Parameters:

publicKeyHex - EC public key in hex

message - message to encrypt

Returns:

encrypted message with base64 encoding

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

InvalidAlgorithmParameterException

NoSuchAlgorithmException

InvalidKeySpecException

decrypt

public static String decrypt(String privateKeyHex,
                             String ciphertext)
                      throws org.bouncycastle.crypto.InvalidCipherTextException,
                             NoSuchAlgorithmException,
                             InvalidKeySpecException

Decrypts given ciphertext with a given private key

Parameters:

privateKeyHex - EC private key in hex

ciphertext - ciphered text in base64

Returns:

decrypted message

Throws:

org.bouncycastle.crypto.InvalidCipherTextException

NoSuchAlgorithmException

InvalidKeySpecException

encrypt

public static byte[] encrypt(byte[] publicKeyBytes,
                             byte[] message)
                      throws InvalidAlgorithmParameterException,
                             NoSuchAlgorithmException,
                             InvalidKeySpecException,
                             org.bouncycastle.crypto.InvalidCipherTextException

Encrypts a given message with a given public key

Parameters:

publicKeyBytes - EC public key binary

message - message to encrypt binary

Returns:

encrypted message binary

Throws:

InvalidAlgorithmParameterException

NoSuchAlgorithmException

InvalidKeySpecException

org.bouncycastle.crypto.InvalidCipherTextException

decrypt

public static byte[] decrypt(byte[] privateKeyBytes,
                             byte[] cipherBytes)
                      throws NoSuchAlgorithmException,
                             InvalidKeySpecException,
                             org.bouncycastle.crypto.InvalidCipherTextException

Decrypts given ciphertext with a given private key

Parameters:

privateKeyBytes - EC private key binary

cipherBytes - cipher text binary

Returns:

decrypted message binary

Throws:

NoSuchAlgorithmException

InvalidKeySpecException

org.bouncycastle.crypto.InvalidCipherTextException