de.alpharogroup.crypto.hash

Class HashExtensions

java.lang.Object

de.alpharogroup.crypto.hash.HashExtensions

public class HashExtensions
extends Object

The class HashExtensions.

Author:

Asterios Raptis

Constructor Summary

Constructors

Constructor and Description
HashExtensions()

Method Summary

Modifier and Type	Method and Description
static byte[]	getMerkleRootHash(Queue<byte[]> hashQueue, @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm) Gets the hash value of the given queue and the given algorithm.
static byte[]	hash(byte[] input, byte[] hash, byte[] signature, long timestamp, @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm) Calculates the hash value as byte array from the given fields
static byte[]	hash(byte[] input, byte[] publicKey, @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm) Calculates the hash value as byte array from the given fields
static byte[]	hash(byte[] input, byte[] hash, long signature, long timestamp, @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm) Calculates the hash value as byte array from the given fields
static byte[]	hash(byte[] hashIt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm) Hashes the given byte[] object with the given parameters.
static byte[]	hash(byte[] hashIt, String salt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm, Charset charset) Hashes the given byte[] object with the given parameters.
static String	hash(String hashIt, String salt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm, Charset charset) Hashes the given String object with the given parameters.
static String	hashAndBase64(String hashIt, String salt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm, Charset charset) Hashes and encodes it with base64 from the given String object with the given parameters.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashExtensions

public HashExtensions()

Method Detail

hash

public static byte[] hash(byte[] hashIt,
                          de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm)
                   throws NoSuchAlgorithmException

Hashes the given byte[] object with the given parameters.

Parameters:

hashIt - the hash it

hashAlgorithm - the hash algorithm

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

hash

public static byte[] hash(byte[] hashIt,
                          String salt,
                          de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm,
                          Charset charset)
                   throws NoSuchAlgorithmException

Hashes the given byte[] object with the given parameters.

Parameters:

hashIt - the hash it

salt - the salt

hashAlgorithm - the hash algorithm

charset - the charset

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

hash

public static String hash(String hashIt,
                          String salt,
                          de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm,
                          Charset charset)
                   throws NoSuchAlgorithmException

Hashes the given String object with the given parameters.

Parameters:

hashIt - the hash it

salt - the salt

hashAlgorithm - the hash algorithm

charset - the charset

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

hashAndBase64

public static String hashAndBase64(String hashIt,
                                   String salt,
                                   de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm,
                                   Charset charset)
                            throws NoSuchAlgorithmException

Hashes and encodes it with base64 from the given String object with the given parameters.

Parameters:

hashIt - the hash it

salt - the salt

hashAlgorithm - the hash algorithm

charset - the charset

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

hash

public static byte[] hash(byte[] input,
                          byte[] hash,
                          byte[] signature,
                          long timestamp,
                          @NonNull
                          @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm)

Calculates the hash value as byte array from the given fields

Parameters:

input - the input hash

hash - the merkle

signature - the signature

timestamp - the timestamp

algorithm - the hash algorithm

Returns:

the calculated hash as byte array

hash

public static byte[] hash(byte[] input,
                          byte[] hash,
                          long signature,
                          long timestamp,
                          @NonNull
                          @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm)

Calculates the hash value as byte array from the given fields

Parameters:

input - the input hash

hash - the merkle

signature - the signature

timestamp - the timestamp

algorithm - the hash algorithm

Returns:

the calculated hash as byte array

hash

public static byte[] hash(byte[] input,
                          byte[] publicKey,
                          @NonNull
                          @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm)

Calculates the hash value as byte array from the given fields

Parameters:

input - the input hash

publicKey - the public key

algorithm - the algorithm

Returns:

the calculated hash as byte array

getMerkleRootHash

public static byte[] getMerkleRootHash(Queue<byte[]> hashQueue,
                                       @NonNull
                                       @NonNull de.alpharogroup.crypto.algorithm.HashAlgorithm algorithm)

Gets the hash value of the given queue and the given algorithm.

Parameters:

hashQueue - the hash queue

algorithm - the algorithm

Returns:

the merkle root tree

See Also:

wikipedia Merkle tree