hera.util

Class CryptoUtils

java.lang.Object

hera.util.CryptoUtils

public class CryptoUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CIPHER_CHARSET
static java.lang.String	CIPHER_NAME
protected static java.lang.String	DEFAULT_PASSWORD
protected static javax.crypto.spec.SecretKeySpec	keySpec
protected static java.security.MessageDigest	md5
protected static java.security.SecureRandom	random
protected static java.security.MessageDigest	sha

Constructor Summary

Constructors

Constructor and Description
CryptoUtils()

Method Summary

Modifier and Type	Method and Description
static javax.crypto.spec.SecretKeySpec	createSecret(byte[] password, int length) Create secret from password.
static byte[]	decryptFromAes128EcbWithBase64(java.lang.String source) Decode with Base64 and Aes128Ecb.
static byte[]	decryptFromAes128EcbWithBase64(java.lang.String source, javax.crypto.spec.SecretKeySpec secretKeySpec) Decode with Base64 and Aes128Ecb.
static byte[]	decryptFromAes128EcbWithBase64(java.lang.String source, java.lang.String password) Decode with Base64 and Aes128Ecb.
static byte[]	decryptFromAesGcm(byte[] source, byte[] password, byte[] nonce) Decrypt to aes with gcm.
static java.lang.String	encryptToAes128EcbWithBase64(byte[] message, javax.crypto.spec.SecretKeySpec secretKeySpec) Encoding with Base64 and Aes128Ecb.
static java.lang.String	encryptToAes128EcbWithBase64(java.lang.String source) Encoding with Base64 and Aes128Ecb.
static java.lang.String	encryptToAes128EcbWithBase64(java.lang.String source, java.lang.String password) Encoding with Base64 and Aes128Ecb.
static byte[]	encryptToAesGcm(byte[] message, byte[] password, byte[] nonce) Encrypt to aes with gcm.

Methods inherited from class java.lang.Object

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

Field Detail

CIPHER_CHARSET

public static final java.lang.String CIPHER_CHARSET

See Also:

Constant Field Values

CIPHER_NAME

public static final java.lang.String CIPHER_NAME

See Also:

Constant Field Values

DEFAULT_PASSWORD

protected static final java.lang.String DEFAULT_PASSWORD

See Also:

Constant Field Values

random

protected static java.security.SecureRandom random

sha

protected static java.security.MessageDigest sha

md5

protected static java.security.MessageDigest md5

keySpec

protected static javax.crypto.spec.SecretKeySpec keySpec

Constructor Detail

CryptoUtils

public CryptoUtils()

Method Detail

createSecret

public static javax.crypto.spec.SecretKeySpec createSecret(byte[] password,
                                                           int length)

Create secret from password.

Parameters:

password - string to create secret from

length - secret length

Returns:

secret to be created

encryptToAes128EcbWithBase64

public static java.lang.String encryptToAes128EcbWithBase64(java.lang.String source)
                                                     throws java.security.NoSuchAlgorithmException,
                                                            javax.crypto.NoSuchPaddingException,
                                                            java.security.InvalidKeyException,
                                                            javax.crypto.IllegalBlockSizeException,
                                                            javax.crypto.BadPaddingException

Encoding with Base64 and Aes128Ecb.

Parameters:

source - string to encode

Returns:

encoded string

Throws:

java.security.NoSuchAlgorithmException - if no algorithm

javax.crypto.NoSuchPaddingException - if no padding exist

java.security.InvalidKeyException - if invalid key used

javax.crypto.IllegalBlockSizeException - if wrong block size

javax.crypto.BadPaddingException - if padding violate rule

encryptToAes128EcbWithBase64

public static java.lang.String encryptToAes128EcbWithBase64(java.lang.String source,
                                                            java.lang.String password)
                                                     throws java.security.NoSuchAlgorithmException,
                                                            javax.crypto.NoSuchPaddingException,
                                                            java.security.InvalidKeyException,
                                                            javax.crypto.IllegalBlockSizeException,
                                                            javax.crypto.BadPaddingException

Encoding with Base64 and Aes128Ecb.

Parameters:

source - string to encode

password - password to encode with

Returns:

encoded string

Throws:

java.security.NoSuchAlgorithmException - if no algorithm

javax.crypto.NoSuchPaddingException - if no padding exist

java.security.InvalidKeyException - if invalid key used

javax.crypto.IllegalBlockSizeException - if wrong block size

javax.crypto.BadPaddingException - if padding violate rule

encryptToAes128EcbWithBase64

public static java.lang.String encryptToAes128EcbWithBase64(byte[] message,
                                                            javax.crypto.spec.SecretKeySpec secretKeySpec)
                                                     throws java.security.NoSuchAlgorithmException,
                                                            javax.crypto.NoSuchPaddingException,
                                                            java.security.InvalidKeyException,
                                                            javax.crypto.IllegalBlockSizeException,
                                                            javax.crypto.BadPaddingException

Encoding with Base64 and Aes128Ecb.

Parameters:

message - byte array to encode

secretKeySpec - secret key information

Returns:

encoded string

Throws:

java.security.NoSuchAlgorithmException - if no algorithm

javax.crypto.NoSuchPaddingException - if no padding exist

java.security.InvalidKeyException - if invalid key used

javax.crypto.IllegalBlockSizeException - if wrong block size

javax.crypto.BadPaddingException - if padding violate rule

encryptToAesGcm

public static byte[] encryptToAesGcm(byte[] message,
                                     byte[] password,
                                     byte[] nonce)
                              throws java.lang.IllegalStateException,
                                     org.bouncycastle.crypto.InvalidCipherTextException

Encrypt to aes with gcm.

Parameters:

message - message to encrypt

password - encrypt key

nonce - an encrypt nonce

Returns:

encrypted bytes

Throws:

java.lang.IllegalStateException - if the cipher is in an inappropriate state

org.bouncycastle.crypto.InvalidCipherTextException - if the MAC fails to match

decryptFromAes128EcbWithBase64

public static byte[] decryptFromAes128EcbWithBase64(java.lang.String source)
                                             throws java.security.NoSuchAlgorithmException,
                                                    javax.crypto.NoSuchPaddingException,
                                                    java.security.InvalidKeyException,
                                                    javax.crypto.IllegalBlockSizeException,
                                                    javax.crypto.BadPaddingException

Decode with Base64 and Aes128Ecb.

Parameters:

source - string to decode

Returns:

decoded string

Throws:

java.security.NoSuchAlgorithmException - if no algorithm

javax.crypto.NoSuchPaddingException - if no padding exist

java.security.InvalidKeyException - if invalid key used

javax.crypto.IllegalBlockSizeException - if wrong block size

javax.crypto.BadPaddingException - if padding violate rule

decryptFromAes128EcbWithBase64

public static byte[] decryptFromAes128EcbWithBase64(java.lang.String source,
                                                    java.lang.String password)
                                             throws java.security.NoSuchAlgorithmException,
                                                    javax.crypto.NoSuchPaddingException,
                                                    java.security.InvalidKeyException,
                                                    javax.crypto.IllegalBlockSizeException,
                                                    javax.crypto.BadPaddingException

Decode with Base64 and Aes128Ecb.

Parameters:

source - string to decode

password - spring to decode with

Returns:

decoded string

Throws:

java.security.NoSuchAlgorithmException - if no algorithm

javax.crypto.NoSuchPaddingException - if no padding exist

java.security.InvalidKeyException - if invalid key used

javax.crypto.IllegalBlockSizeException - if wrong block size

javax.crypto.BadPaddingException - if padding violate rule

decryptFromAes128EcbWithBase64

public static byte[] decryptFromAes128EcbWithBase64(java.lang.String source,
                                                    javax.crypto.spec.SecretKeySpec secretKeySpec)
                                             throws java.security.NoSuchAlgorithmException,
                                                    javax.crypto.NoSuchPaddingException,
                                                    java.security.InvalidKeyException,
                                                    javax.crypto.IllegalBlockSizeException,
                                                    javax.crypto.BadPaddingException

Decode with Base64 and Aes128Ecb.

Parameters:

source - string to decode

secretKeySpec - secret to decode with

Returns:

decoded string

Throws:

java.security.NoSuchAlgorithmException - if no algorithm

javax.crypto.NoSuchPaddingException - if no padding exist

java.security.InvalidKeyException - if invalid key used

javax.crypto.IllegalBlockSizeException - if wrong block size

javax.crypto.BadPaddingException - if padding violate rule

decryptFromAesGcm

public static byte[] decryptFromAesGcm(byte[] source,
                                       byte[] password,
                                       byte[] nonce)
                                throws java.lang.IllegalStateException,
                                       org.bouncycastle.crypto.InvalidCipherTextException

Decrypt to aes with gcm.

Parameters:

source - source to decrypt

password - encrypt key

nonce - an encrypt nonce

Returns:

decryp bytes

Throws:

java.lang.IllegalStateException - if the cipher is in an inappropriate state

org.bouncycastle.crypto.InvalidCipherTextException - if the MAC fails to match