org.eclipse.viatra.dse.util

Class Hasher

java.lang.Object

org.eclipse.viatra.dse.util.Hasher

public final class Hasher
extends java.lang.Object

Utility class that encapsulates a MessageDigest instance to aid calculating hash values more easily, and to reuse a MessageDigest instance.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	SHA1_PROTOCOLL

Method Summary

Modifier and Type	Method and Description
static Hasher	getHasher(java.lang.String protocoll) Returns a Hasher with an internal MessageDigest that is based on the protocol named protocoll.
java.lang.String	hash(java.lang.String data) Calculates and returns a hash value.

Methods inherited from class java.lang.Object

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

Field Detail

SHA1_PROTOCOLL

public static final java.lang.String SHA1_PROTOCOLL

See Also:

Constant Field Values

Method Detail

hash

public java.lang.String hash(java.lang.String data)

Calculates and returns a hash value.

Parameters:

data - the data to be hashed in a String.

Returns:

the hash value in some String representation.

getHasher

public static Hasher getHasher(java.lang.String protocoll)

Returns a Hasher with an internal MessageDigest that is based on the protocol named protocoll.

Parameters:

protocoll - the name of the hash algorythm.

Returns:

the initialized Hasher

Throws:

DSEException - on initialization failure.