org.dihedron.crypto.operations.verify

Class Verifier

java.lang.Object

org.dihedron.crypto.CryptoService

org.dihedron.crypto.operations.verify.Verifier

Direct Known Subclasses:

PDFVerifier, PKCS7Verifier

@License
public abstract class Verifier
extends CryptoService

This class acts as the base class, providing common functionalities to all fashions of verifiers. It is an abstract class and not an interface because we want it to extend CryptoService, which in turn ensures that BouncyCastle is loaded automatically among the security providers without our having to do anything.

Constructor Summary

Constructors

Constructor and Description
Verifier()

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	verify(byte[] signed) Verifies that the signed data in the input array has not been tampered with.
abstract boolean	verify(byte[] data, byte[] signature) Verifies a detached signature, given the data upon which it was originally calculated and the detached signature bytes.
abstract boolean	verify(InputStream signed) Verifies the signature of the given set of encapsulated data.

Methods inherited from class java.lang.Object

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

Constructor Detail

Verifier

public Verifier()

Method Detail

verify

public abstract boolean verify(byte[] signed)
                        throws CryptoException

Verifies that the signed data in the input array has not been tampered with.

Parameters:

signed - an array of bytes containing a signed file.

Returns:

whether the verification was successful.

Throws:

CryptoException

verify

public abstract boolean verify(byte[] data,
             byte[] signature)
                        throws CryptoException

Verifies a detached signature, given the data upon which it was originally calculated and the detached signature bytes.

Parameters:

data - the data on which the signature was originally calculated.

signature - the (detached) signature as a byte array.

Returns:

whether the verification was successful.

Throws:

CryptoException

verify

public abstract boolean verify(InputStream signed)
                        throws CryptoException

Verifies the signature of the given set of encapsulated data.

Parameters:

signed - the encapsulated data.

Returns:

whether the signature is valid.

Throws:

CryptoException