Package se.swedenconnect.opensaml.xmlsec.signature.support.provider

Class ExtendedSignerProvider

java.lang.Object

org.opensaml.xmlsec.signature.support.impl.provider.ApacheSantuarioSignerProviderImpl

se.swedenconnect.opensaml.xmlsec.signature.support.provider.ExtendedSignerProvider

All Implemented Interfaces:

SignerProvider

public class ExtendedSignerProvider
extends ApacheSantuarioSignerProviderImpl

The Sun PKCS#11 crypto provider does not have support for PSS padding which makes HSM RSA-PSS signing impossible using the standard OpenSAML signer provider (ApacheSantuarioSignerProviderImpl). Therefore, the ExtendedSignerProvider overrides ApacheSantuarioSignerProviderImpl with functionality that performs the PSS padding in software and only the raw RSA encryption operation is done in the HSM. This enables RSA-PSS signing with RSA keys in HSM even when RSA-PSS is not supported by the PKCS#11 API.

Author:

Martin Lindström (martin@idsec.se), Stefan Santesson (stefan@idsec.se)

See Also:

• ApacheSantuarioSignerProviderImpl

Constructor Summary

Constructors

Constructor	Description
ExtendedSignerProvider()	Default constructor.

Method Summary

Modifier and Type	Method	Description
void	signObject(Signature signature)	Tests if the signing key is a SUN PKCS#11 key and the signing algorithm is RSA-PSS.

Methods inherited from class java.lang.Object

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

Constructor Details

ExtendedSignerProvider

public ExtendedSignerProvider()

Default constructor.

Method Details

signObject

public void signObject(Signature signature)
                throws SignatureException

Tests if the signing key is a SUN PKCS#11 key and the signing algorithm is RSA-PSS. If this is the case, then PSS padding is performed in software and only the raw RSA encryption operation is done in the HSM. This enables RSA-PSS signing with RSA keys in HSM even when RSA-PSS is not supported by the PKCS#11 API.

Specified by:

signObject in interface SignerProvider

Overrides:

signObject in class ApacheSantuarioSignerProviderImpl

Throws:

SignatureException