Package com.exonum.binding.common.crypto

Enum Ed25519CryptoFunction

java.lang.Object

java.lang.Enum<Ed25519CryptoFunction>

com.exonum.binding.common.crypto.Ed25519CryptoFunction

All Implemented Interfaces:

CryptoFunction, java.io.Serializable, java.lang.Comparable<Ed25519CryptoFunction>

public enum Ed25519CryptoFunction
extends java.lang.Enum<Ed25519CryptoFunction>
implements CryptoFunction

A ED25519 public-key signature system crypto function.

Enum Constant Summary

Enum Constants

Enum Constant	Description
INSTANCE

Method Summary

Modifier and Type	Method	Description
KeyPair	generateKeyPair()	Generates a private key and a corresponding public key using a random seed.
KeyPair	generateKeyPair(byte[] seed)	Generates a private key and a corresponding public key using a seed byte array.
byte[]	signMessage(byte[] message, PrivateKey privateKey)	Given a privateKey, computes and returns a signature for the supplied message.
static Ed25519CryptoFunction	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static Ed25519CryptoFunction[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.
boolean	verify(byte[] message, byte[] signature, PublicKey publicKey)	Given a publicKey, verifies that signature is a valid signature for the supplied message.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INSTANCE

public static final Ed25519CryptoFunction INSTANCE

Method Detail

values

public static Ed25519CryptoFunction[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Ed25519CryptoFunction c : Ed25519CryptoFunction.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Ed25519CryptoFunction valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

generateKeyPair

public KeyPair generateKeyPair(byte[] seed)

Description copied from interface: CryptoFunction

Generates a private key and a corresponding public key using a seed byte array.

Specified by:

generateKeyPair in interface CryptoFunction

generateKeyPair

public KeyPair generateKeyPair()

Description copied from interface: CryptoFunction

Generates a private key and a corresponding public key using a random seed.

Specified by:

generateKeyPair in interface CryptoFunction

signMessage

public byte[] signMessage(byte[] message,
                          PrivateKey privateKey)

Description copied from interface: CryptoFunction

Given a privateKey, computes and returns a signature for the supplied message.

Specified by:

signMessage in interface CryptoFunction

Returns:

signature as a byte array

verify

public boolean verify(byte[] message,
                      byte[] signature,
                      PublicKey publicKey)

Description copied from interface: CryptoFunction

Given a publicKey, verifies that signature is a valid signature for the supplied message.

Specified by:

verify in interface CryptoFunction

Returns:

true if signature is valid, false otherwise