Package org.apache.pdfbox.examples.signature.validation

Class CertInformationHelper

java.lang.Object

org.apache.pdfbox.examples.signature.validation.CertInformationHelper

public class CertInformationHelper
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CertInformationHelper()

Method Summary

Modifier and Type	Method	Description
private static String	extractCrlUrlFromSequence(org.bouncycastle.asn1.ASN1Sequence sequence)
protected static void	getAuthorityInfoExtensionValue(byte[] extensionValue, CertInformationCollector.CertSignatureInformation certInfo)	Extracts authority information access extension values from the given data.
protected static String	getCrlUrlFromExtensionValue(byte[] extensionValue)	Gets the first CRL URL from given extension value.
protected static String	getSha1Hash(byte[] content)	Gets the SHA-1-Hash has of given byte[]-content.

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.apache.commons.logging.Log LOG

Constructor Details

CertInformationHelper

private CertInformationHelper()

Method Details

getSha1Hash

protected static String getSha1Hash(byte[] content)

Gets the SHA-1-Hash has of given byte[]-content.

Parameters:

content - to be hashed

Returns:

SHA-1 hash String

getAuthorityInfoExtensionValue

protected static void getAuthorityInfoExtensionValue(byte[] extensionValue,
 CertInformationCollector.CertSignatureInformation certInfo)
                                              throws IOException

Extracts authority information access extension values from the given data. The Data structure has to be implemented as described in RFC 2459, 4.2.2.1.

Parameters:

extensionValue - byte[] of the extension value.

certInfo - where to put the found values

Throws:

IOException - when there is a problem with the extensionValue

getCrlUrlFromExtensionValue

protected static String getCrlUrlFromExtensionValue(byte[] extensionValue)
                                             throws IOException

Gets the first CRL URL from given extension value. Structure has to be built as in 4.2.1.14 CRL Distribution Points of RFC 2459.

Parameters:

extensionValue - to get the extension value from

Returns:

first CRL- URL or null

Throws:

IOException - when there is a problem with the extensionValue

extractCrlUrlFromSequence

private static String extractCrlUrlFromSequence(org.bouncycastle.asn1.ASN1Sequence sequence)