Package org.flasby.crypto

Class CryptoUtils

java.lang.Object

org.flasby.crypto.CryptoUtils

public final class CryptoUtils
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CryptoUtils.CipherPair

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_CIPHER
static final String	DEFAULT_KEY_ALGORITHM
static final String	ENCODING_CHARSET

Constructor Summary

Constructors

Constructor	Description
CryptoUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	checkPassword(String candidatePassword, String hash)
static byte[]	fromBase64(String toDecode)
static CryptoUtils.CipherPair	generateCipherPair(char[] passPhrase)	generates a new CipherPair which can be used to encrypt and decrypt stuff.
static final CryptoUtils.CipherPair	generateCipherPair(char[] passPhrase, byte[] iv)
static final CryptoUtils.CipherPair	generateCipherPair(char[] passPhrase, byte[] salt, String keyAlgorithm, byte[] iv)
static Cipher	generateDeCipher(char[] passPhrase, byte[] salt, String keyAlgorithm, byte[] iv)
final byte[]	hashPassword(char[] password, byte[] salt, int iterations, int keyLength)
static final String	hashPassword(String password)
static void	main(String[] args)
static String	toBase64(byte[] toEncode)

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_KEY_ALGORITHM

public static final String DEFAULT_KEY_ALGORITHM

See Also:

• Constant Field Values

DEFAULT_CIPHER

public static final String DEFAULT_CIPHER

See Also:

• Constant Field Values

ENCODING_CHARSET

public static final String ENCODING_CHARSET

See Also:

• Constant Field Values

Constructor Details

CryptoUtils

public CryptoUtils()

Method Details

main

public static void main(String[] args)

generateCipherPair

public static CryptoUtils.CipherPair generateCipherPair(char[] passPhrase)

generates a new CipherPair which can be used to encrypt and decrypt stuff. Importantly, the IV is random so you can't decrypt anything using a new pair with the same passPhrase without first initialising the decrypt IV.

Parameters:

passPhrase -

Returns:

Throws:

SecurityException

generateCipherPair

public static final CryptoUtils.CipherPair generateCipherPair(char[] passPhrase,
 byte[] iv)
                                                       throws SecurityException

Throws:

SecurityException

generateCipherPair

public static final CryptoUtils.CipherPair generateCipherPair(char[] passPhrase,
 byte[] salt,
 String keyAlgorithm,
 byte[] iv)
                                                       throws SecurityException

Throws:

SecurityException

generateDeCipher

public static Cipher generateDeCipher(char[] passPhrase,
 byte[] salt,
 String keyAlgorithm,
 byte[] iv)
                               throws NoSuchAlgorithmException,
InvalidKeySpecException,
NoSuchPaddingException,
InvalidKeyException,
InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

InvalidKeySpecException

NoSuchPaddingException

InvalidKeyException

InvalidAlgorithmParameterException

hashPassword

public static final String hashPassword(String password)

checkPassword

public static boolean checkPassword(String candidatePassword,
 String hash)

hashPassword

public final byte[] hashPassword(char[] password,
 byte[] salt,
 int iterations,
 int keyLength)

toBase64

public static String toBase64(byte[] toEncode)

fromBase64

public static byte[] fromBase64(String toDecode)