Package com.google.crypto.tink.signature

Class Ed25519PrivateKey

java.lang.Object

com.google.crypto.tink.Key

com.google.crypto.tink.signature.SignaturePrivateKey

com.google.crypto.tink.signature.Ed25519PrivateKey

All Implemented Interfaces:

PrivateKey

@Immutable
public final class Ed25519PrivateKey
extends SignaturePrivateKey

The key for computing Ed25519 signatures.

Method Summary

Modifier and Type	Method	Description
static Ed25519PrivateKey	create(Ed25519PublicKey publicKey, SecretBytes privateKeyBytes)
boolean	equalsKey(Key o)	Returns true if the key is guaranteed to be equal to other.
Ed25519Parameters	getParameters()	Returns the parameters of this key.
SecretBytes	getPrivateKeyBytes()
Ed25519PublicKey	getPublicKey()	Returns the SignaturePublicKey, which contains the verify function of the digital signature primitive.

Methods inherited from class com.google.crypto.tink.signature.SignaturePrivateKey

getIdRequirementOrNull, getOutputPrefix

Methods inherited from class java.lang.Object

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

Method Detail

create

public static Ed25519PrivateKey create(Ed25519PublicKey publicKey,
                                       SecretBytes privateKeyBytes)
                                throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

getParameters

public Ed25519Parameters getParameters()

Description copied from class: SignaturePrivateKey

Returns the parameters of this key.

Returns the same as getPublicKey().getParameters().

Overrides:

getParameters in class SignaturePrivateKey

getPublicKey

public Ed25519PublicKey getPublicKey()

Description copied from class: SignaturePrivateKey

Returns the SignaturePublicKey, which contains the verify function of the digital signature primitive.

Specified by:

getPublicKey in interface PrivateKey

Specified by:

getPublicKey in class SignaturePrivateKey

getPrivateKeyBytes

public SecretBytes getPrivateKeyBytes()

equalsKey

public boolean equalsKey(Key o)

Description copied from class: Key

Returns true if the key is guaranteed to be equal to other.

Implementations are required to do this in constant time.

Note: this is allowed to return false even if two keys are guaranteed to represent the same function, but are represented differently. For example, a key is allowed to internally store the number of zero-bytes used as padding when a large number is represented as a byte array, and use this in the comparison.

Note: Tink Key objects should typically not override hashCode (because it could risk leaking key material). Hence, they typically also should not override equals.

Specified by:

equalsKey in class Key