Package eu.europa.esig.dss.pdf.encryption

Class DSSSecureRandomProvider

java.lang.Object

eu.europa.esig.dss.pdf.encryption.DSSSecureRandomProvider

All Implemented Interfaces:

SecureRandomProvider

public class DSSSecureRandomProvider
extends Object
implements SecureRandomProvider

Default SecureRandomProvider used in DSS, returning org.bouncycastle.crypto.prng.FixedSecureRandom instance

Constructor Summary

Constructors

Constructor	Description
DSSSecureRandomProvider(PAdESCommonParameters parameters)	The default constructor taking an object to compute seeds from.
DSSSecureRandomProvider(SignatureImageParameters imageParameters)	Constructor to instantiate DSSSecureRandomProvider from image parameters.

Method Summary

Modifier and Type	Method	Description
SecureRandom	getSecureRandom()	Gets SecureRandom instance
void	setBinaryLength(int binaryLength)	Sets the amount of bytes to be computed for FixedSecureRandom 16 bytes is required per one AES Vector initialization
void	setDigestAlgorithm(DigestAlgorithm digestAlgorithm)	Allows to set a DigestAlgorithm that will be applied on serialized parameters

Methods inherited from class java.lang.Object

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

Constructor Details

DSSSecureRandomProvider

public DSSSecureRandomProvider(PAdESCommonParameters parameters)

The default constructor taking an object to compute seeds from. Concatenates all attributes from PAdESCommonParameters to a BAOS.

Parameters:

parameters - PAdESCommonParameters to compute seed value from

DSSSecureRandomProvider

public DSSSecureRandomProvider(SignatureImageParameters imageParameters)

Constructor to instantiate DSSSecureRandomProvider from image parameters. Concatenates all attributes from SignatureImageParameters to a BAOS.

Parameters:

imageParameters - SignatureImageParameters to compute seed value from

Method Details

setDigestAlgorithm

public void setDigestAlgorithm(DigestAlgorithm digestAlgorithm)

Allows to set a DigestAlgorithm that will be applied on serialized parameters

Parameters:

digestAlgorithm - DigestAlgorithm

setBinaryLength

public void setBinaryLength(int binaryLength)

Sets the amount of bytes to be computed for FixedSecureRandom 16 bytes is required per one AES Vector initialization

Parameters:

binaryLength - number of bytes

getSecureRandom

public SecureRandom getSecureRandom()

Description copied from interface: SecureRandomProvider

Gets SecureRandom instance

Specified by:

getSecureRandom in interface SecureRandomProvider

Returns:

SecureRandom