Package com.itextpdf.kernel.crypto.securityhandler

Class EncryptionUtils

java.lang.Object

com.itextpdf.kernel.crypto.securityhandler.EncryptionUtils

final class EncryptionUtils
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	EncryptionUtils.DERForRecipientParams

Field Summary

Fields

Modifier and Type	Field	Description
private static IBouncyCastleFactory	BOUNCY_CASTLE_FACTORY
private static java.lang.String	ENVELOPE_ENCRYPTION_ALGORITHM_JCA_NAME
private static java.lang.String	ENVELOPE_ENCRYPTION_ALGORITHM_OID
private static int	ENVELOPE_ENCRYPTION_KEY_LENGTH
private static java.util.Set<java.lang.String>	UNSUPPORTED_ALGORITHMS

Constructor Summary

Constructors

Constructor	Description
EncryptionUtils()

Method Summary

Modifier and Type	Method	Description
(package private) static EncryptionUtils.DERForRecipientParams	calculateDERForRecipientParams(byte[] in)
(package private) static byte[]	cipherBytes(java.security.cert.X509Certificate x509certificate, byte[] abyte0, IAlgorithmIdentifier algorithmIdentifier)
(package private) static byte[]	fetchEnvelopedData(java.security.Key certificateKey, java.security.cert.Certificate certificate, java.lang.String certificateKeyProvider, IExternalDecryptionProcess externalDecryptionProcess, PdfArray recipients)
(package private) static byte[]	generateSeed(int seedLength)

Methods inherited from class java.lang.Object

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

Field Detail

ENVELOPE_ENCRYPTION_ALGORITHM_OID

private static final java.lang.String ENVELOPE_ENCRYPTION_ALGORITHM_OID

See Also:

Constant Field Values

ENVELOPE_ENCRYPTION_ALGORITHM_JCA_NAME

private static final java.lang.String ENVELOPE_ENCRYPTION_ALGORITHM_JCA_NAME

See Also:

Constant Field Values

ENVELOPE_ENCRYPTION_KEY_LENGTH

private static final int ENVELOPE_ENCRYPTION_KEY_LENGTH

See Also:

Constant Field Values

BOUNCY_CASTLE_FACTORY

private static final IBouncyCastleFactory BOUNCY_CASTLE_FACTORY

UNSUPPORTED_ALGORITHMS

private static final java.util.Set<java.lang.String> UNSUPPORTED_ALGORITHMS

Constructor Detail

EncryptionUtils

EncryptionUtils()

Method Detail

generateSeed

static byte[] generateSeed(int seedLength)

fetchEnvelopedData

static byte[] fetchEnvelopedData(java.security.Key certificateKey,
                                 java.security.cert.Certificate certificate,
                                 java.lang.String certificateKeyProvider,
                                 IExternalDecryptionProcess externalDecryptionProcess,
                                 PdfArray recipients)

cipherBytes

static byte[] cipherBytes(java.security.cert.X509Certificate x509certificate,
                          byte[] abyte0,
                          IAlgorithmIdentifier algorithmIdentifier)
                   throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

calculateDERForRecipientParams

static EncryptionUtils.DERForRecipientParams calculateDERForRecipientParams(byte[] in)
                                                                     throws java.io.IOException,
                                                                            java.security.GeneralSecurityException

Throws:

java.io.IOException

java.security.GeneralSecurityException