org.apache.pdfbox.examples.signature.validation

Class CertInformationHelper

java.lang.Object

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

public class CertInformationHelper
extends Object

Method Summary

Modifier and Type	Method and Description
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

Method Detail

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