com.entrust.toolkit.security.crypto.signature

Class Md2RsaSignature

java.lang.Object

java.security.SignatureSpi

java.security.Signature

com.entrust.toolkit.security.crypto.signature.DigitalSignature

com.entrust.toolkit.security.crypto.signature.RsaSignature

com.entrust.toolkit.security.crypto.signature.RsaPkcs1v1_5Signature

com.entrust.toolkit.security.crypto.signature.Md2RsaSignature

All Implemented Interfaces:

ExtendedSignature

public final class Md2RsaSignature
extends RsaPkcs1v1_5Signature

The RSA-PKCS1-v1_5 signature algorithm with MD2 as the underlying hash function.

This implementation calculates the hash internally, thus it is the message itself (being signed or verified) that is passed in through the update() API.

An instance of this algorithm can be obtained using the Java Cryptography Architecture (JCA), by requesting a 'MD2withRSA' digital signature from the Entrust cryptographic service provider. This can be done using the following call:

Signature.getInstance("MD2withRSA", "Entrust");

Warning:

MD2 was designed to provide 64-bits of security, but attacks have been discovered that reduce the security even further. Additionally, as of January 1, 2011, NIST recommends that at least 112-bits of security be used when generating digital signatures. Thus, this algorithm SHOULD no longer be used for digital signature generation, only for digital signature verification.

FIPS 140-2:

This class is part of the Toolkit's FIPS 140-2 cryptographic module and contains APIs that are considered part of the logical interface to the Toolkit's FIPS 140-2 cryptographic module; refer to the API documentation for further details

Since:

7.0

See Also:

PKCS #1: RSA Cryptography Standard

Field Summary

Fields inherited from class java.security.Signature

SIGN, state, UNINITIALIZED, VERIFY

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

Constructors

Constructor and Description
Md2RsaSignature() The constructor; creates a new instance of the MD2withRSA digital signature algorithm instance.

Method Summary

Methods inherited from class com.entrust.toolkit.security.crypto.signature.RsaSignature

getDigitalSignatureImpl

Methods inherited from class com.entrust.toolkit.security.crypto.signature.DigitalSignature

assertParametersValid, engineGetParameter, engineGetParameters, engineInitSign, engineInitSign, engineInitVerify, engineSetParameter, engineSetParameter, engineSign, engineSign, engineUpdate, engineUpdate, engineVerify, engineVerify, generateDefaultParameters, getDigest, getPrng, toAlgorithmParameters

Methods inherited from class java.security.Signature

clone, getAlgorithm, getInstance, getInstance, getInstance, getParameter, getParameters, getProvider, initSign, initSign, initVerify, initVerify, setParameter, setParameter, sign, sign, toString, update, update, update, update, verify, verify

Methods inherited from class java.security.SignatureSpi

engineUpdate

Methods inherited from class java.lang.Object

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

Constructor Detail

Md2RsaSignature

public Md2RsaSignature()

The constructor; creates a new instance of the MD2withRSA digital signature algorithm instance.

Applications should not use this constructor, instead the signature algorithm should be requested from the appropriate JCA/JCE cryptographic service provider as follows: Signature.getInstance("MD2withRSA", "Entrust")