Package org.bouncycastle.jcajce.util

Class JcaJceUtils

java.lang.Object

org.bouncycastle.jcajce.util.JcaJceUtils

public class JcaJceUtils
extends Object

General JCA/JCE utility methods.

Method Summary

Modifier and Type	Method	Description
static ASN1Encodable	extractParameters(AlgorithmParameters params)	Extract an ASN.1 encodable from an AlgorithmParameters object.
static String	getDigestAlgName(ASN1ObjectIdentifier digestAlgOID)	Attempt to find a standard JCA name for the digest represented by the past in OID.
static void	loadParameters(AlgorithmParameters params, ASN1Encodable sParams)	Load an AlgorithmParameters object with the passed in ASN.1 encodable - if possible.

Methods inherited from class java.lang.Object

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

Method Detail

extractParameters

public static ASN1Encodable extractParameters(AlgorithmParameters params)
                                       throws IOException

Extract an ASN.1 encodable from an AlgorithmParameters object.

Parameters:

params - the object to get the encoding used to create the return value.

Returns:

an ASN.1 object representing the primitives making up the params parameter.

Throws:

IOException - if an encoding cannot be extracted.

loadParameters

public static void loadParameters(AlgorithmParameters params,
                                  ASN1Encodable sParams)
                           throws IOException

Load an AlgorithmParameters object with the passed in ASN.1 encodable - if possible.

Parameters:

params - the AlgorithmParameters object to be initialised.

sParams - the ASN.1 encodable to initialise params with.

Throws:

IOException - if the parameters cannot be initialised.

getDigestAlgName

public static String getDigestAlgName(ASN1ObjectIdentifier digestAlgOID)

Attempt to find a standard JCA name for the digest represented by the past in OID.

Parameters:

digestAlgOID - the OID of the digest algorithm of interest.

Returns:

a string representing the standard name - the OID as a string if none available.