Package org.docx4j.org.apache.xml.security.utils

Class JavaUtils

java.lang.Object
org.docx4j.org.apache.xml.security.utils.JavaUtils
public final class JavaUtils
extends java.lang.Object
A collection of different, general-purpose methods for JAVA-specific things
Author:
Christian Geuer-Pollmann

  • Method Summary

    Modifier and Type Method Description
    static void checkRegisterPermission()
    Throws a SecurityException if a security manager is installed and the caller is not allowed to register an implementation of an algorithm, transform, or other security sensitive XML Signature function.
    static byte[] convertDsaASN1toXMLDSIG​(byte[] asn1Bytes, int size)
    Converts an ASN.1 DSA value to a XML Signature DSA Value.
    static byte[] convertDsaXMLDSIGtoASN1​(byte[] xmldsigBytes, int size)
    Converts an XML Signature DSA Value to a ASN.1 DSA value.
    static byte[] getBytesFromFile​(java.lang.String fileName)
    Method getBytesFromFile
    static byte[] getBytesFromStream​(java.io.InputStream inputStream)
    This method reads all bytes from the given InputStream till EOF and returns them as a byte array.
    static void writeBytesToFilename​(java.lang.String filename, byte[] bytes)
    Method writeBytesToFilename

    Methods inherited from class java.lang.Object

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

  • Method Details

    • getBytesFromFile

      public static byte[] getBytesFromFile​(java.lang.String fileName) throws java.io.FileNotFoundException, java.io.IOException
      Method getBytesFromFile
      Parameters:
      fileName -
      Returns:
      the bytes read from the file
      Throws:
      java.io.FileNotFoundException
      java.io.IOException

    • writeBytesToFilename

      public static void writeBytesToFilename​(java.lang.String filename, byte[] bytes)
      Method writeBytesToFilename
      Parameters:
      filename -
      bytes -

    • getBytesFromStream

      public static byte[] getBytesFromStream​(java.io.InputStream inputStream) throws java.io.IOException
      This method reads all bytes from the given InputStream till EOF and returns them as a byte array.
      Parameters:
      inputStream -
      Returns:
      the bytes read from the stream
      Throws:
      java.io.FileNotFoundException
      java.io.IOException

    • convertDsaASN1toXMLDSIG

      public static byte[] convertDsaASN1toXMLDSIG​(byte[] asn1Bytes, int size) throws java.io.IOException
      Converts an ASN.1 DSA value to a XML Signature DSA Value. The JCE DSA Signature algorithm creates ASN.1 encoded (r,s) value pairs (see section 2.2.2 of RFC 3279); the XML Signature requires the core BigInteger values.
      Parameters:
      asn1Bytes - the ASN.1 encoded bytes
      size - size of r and s in bytes
      Returns:
      the XML Signature encoded bytes
      Throws:
      java.io.IOException - if the bytes are not encoded correctly
      See Also:
      6.4.1 DSA

    • convertDsaXMLDSIGtoASN1

      public static byte[] convertDsaXMLDSIGtoASN1​(byte[] xmldsigBytes, int size) throws java.io.IOException
      Converts an XML Signature DSA Value to a ASN.1 DSA value. The JCE DSA Signature algorithm creates ASN.1 encoded (r,s) value pairs (see section 2.2.2 of RFC 3279); the XML Signature requires the core BigInteger values.
      Parameters:
      xmldsigBytes - the XML Signature encoded bytes
      size - size of r and s in bytes
      Returns:
      the ASN.1 encoded bytes
      Throws:
      java.io.IOException - if the bytes are not encoded correctly
      See Also:
      6.4.1 DSA

    • checkRegisterPermission

      public static void checkRegisterPermission()
      Throws a SecurityException if a security manager is installed and the caller is not allowed to register an implementation of an algorithm, transform, or other security sensitive XML Signature function.
      Throws:
      java.lang.SecurityException - if a security manager is installed and the caller has not been granted the "org.docx4j.org.apache.xml.security.register" SecurityPermission