org.mozilla.jss.pkcs7

Class EncryptedContentInfo

java.lang.Object

org.mozilla.jss.pkcs7.EncryptedContentInfo

All Implemented Interfaces:

ASN1Value

public class EncryptedContentInfo
extends java.lang.Object
implements ASN1Value

The PKCS #7 type EncryptedContentInfo, which encapsulates encrypted data.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EncryptedContentInfo.Template A template file for decoding a EnvelopedData blob

Constructor Summary

Constructors

Constructor and Description
EncryptedContentInfo(OBJECT_IDENTIFIER contentType, AlgorithmIdentifier contentEncryptionAlgorithm, OCTET_STRING encryptedContent) Create a EnvelopedData ASN1 object.
EncryptedContentInfo(OBJECT_IDENTIFIER contentType, AlgorithmIdentifier contentEncryptionAlgorithm, OCTET_STRING encryptedContent, boolean createHackedCRSCompatibleECI)

Method Summary

Modifier and Type	Method and Description
static EncryptedContentInfo	createCRSCompatibleEncryptedContentInfo(OBJECT_IDENTIFIER contentType, AlgorithmIdentifier contentEncryptionAlgorithm, OCTET_STRING encryptedContent)
static EncryptedContentInfo	createPBE(PBEAlgorithm keyGenAlg, Password password, byte[] salt, int iterationCount, KeyGenerator.CharToByteConverter charToByteConverter, byte[] toBeEncrypted) Creates a new EncryptedContentInfo, where the data is encrypted with a password-based key.
byte[]	decrypt(Password pass, KeyGenerator.CharToByteConverter charToByteConverter) Decrypts the content of an EncryptedContentInfo encrypted with a PBE key.
void	encode(java.io.OutputStream ostream) Write this value's DER encoding to an output stream using its own base tag.
void	encode(Tag tag, java.io.OutputStream ostream) Write this value's DER encoding to an output stream using an implicit tag.
AlgorithmIdentifier	getContentEncryptionAlgorithm()
OBJECT_IDENTIFIER	getContentType()
OCTET_STRING	getEncryptedContent()
Tag	getTag() Returns the base tag for this type, not counting any tags that may be imposed on it by its context.
static EncryptedContentInfo.Template	getTemplate()
boolean	hasEncryptedContent()

Methods inherited from class java.lang.Object

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

Constructor Detail

EncryptedContentInfo

public EncryptedContentInfo(OBJECT_IDENTIFIER contentType,
                            AlgorithmIdentifier contentEncryptionAlgorithm,
                            OCTET_STRING encryptedContent)

Create a EnvelopedData ASN1 object.

EncryptedContentInfo

public EncryptedContentInfo(OBJECT_IDENTIFIER contentType,
                            AlgorithmIdentifier contentEncryptionAlgorithm,
                            OCTET_STRING encryptedContent,
                            boolean createHackedCRSCompatibleECI)

Method Detail

getContentType

public OBJECT_IDENTIFIER getContentType()

getContentEncryptionAlgorithm

public AlgorithmIdentifier getContentEncryptionAlgorithm()

getEncryptedContent

public OCTET_STRING getEncryptedContent()

hasEncryptedContent

public boolean hasEncryptedContent()

createCRSCompatibleEncryptedContentInfo

public static EncryptedContentInfo createCRSCompatibleEncryptedContentInfo(OBJECT_IDENTIFIER contentType,
                                                                           AlgorithmIdentifier contentEncryptionAlgorithm,
                                                                           OCTET_STRING encryptedContent)

createPBE

public static EncryptedContentInfo createPBE(PBEAlgorithm keyGenAlg,
                                             Password password,
                                             byte[] salt,
                                             int iterationCount,
                                             KeyGenerator.CharToByteConverter charToByteConverter,
                                             byte[] toBeEncrypted)
                                      throws NotInitializedException,
                                             java.security.NoSuchAlgorithmException,
                                             java.security.InvalidKeyException,
                                             java.security.InvalidAlgorithmParameterException,
                                             TokenException,
                                             java.io.CharConversionException

Creates a new EncryptedContentInfo, where the data is encrypted with a password-based key.

Parameters:

keyGenAlg - The algorithm for generating a symmetric key from a password, salt, and iteration count.

password - The password to use in generating the key.

salt - The salt to use in generating the key.

iterationCount - The number of hashing iterations to perform while generating the key.

charToByteConverter - The mechanism for converting the characters in the password into bytes. If null, the default mechanism will be used, which is UTF8.

toBeEncrypted - The bytes to be encrypted and stored in the EncryptedContentInfo. Before they are encrypted, they will be padded using PKCS padding.

Throws:

NotInitializedException

java.security.NoSuchAlgorithmException

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

TokenException

java.io.CharConversionException

decrypt

public byte[] decrypt(Password pass,
                      KeyGenerator.CharToByteConverter charToByteConverter)
               throws java.lang.IllegalStateException,
                      NotInitializedException,
                      java.security.NoSuchAlgorithmException,
                      InvalidBERException,
                      java.io.IOException,
                      java.security.InvalidKeyException,
                      java.security.InvalidAlgorithmParameterException,
                      TokenException,
                      IllegalBlockSizeException,
                      javax.crypto.BadPaddingException

Decrypts the content of an EncryptedContentInfo encrypted with a PBE key.

Parameters:

pass - The password to use in generating the PBE decryption key.

charToByteConverter - The converter for converting the password characters into bytes. May be null to use the default.

Returns:

The decrypted contents of the EncryptedContentInfo. The contents are first unpadded using the PKCS padding mechanism.

Throws:

java.lang.IllegalStateException

NotInitializedException

java.security.NoSuchAlgorithmException

InvalidBERException

java.io.IOException

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

TokenException

IllegalBlockSizeException

javax.crypto.BadPaddingException

getTag

public Tag getTag()

Description copied from interface: ASN1Value

Returns the base tag for this type, not counting any tags that may be imposed on it by its context.

Specified by:

getTag in interface ASN1Value

Returns:

Base tag.

encode

public void encode(java.io.OutputStream ostream)
            throws java.io.IOException

Description copied from interface: ASN1Value

Write this value's DER encoding to an output stream using its own base tag.

Specified by:

encode in interface ASN1Value

Parameters:

ostream - Output stream.

Throws:

java.io.IOException - If an error occurred.

encode

public void encode(Tag tag,
                   java.io.OutputStream ostream)
            throws java.io.IOException

Description copied from interface: ASN1Value

Write this value's DER encoding to an output stream using an implicit tag.

Specified by:

encode in interface ASN1Value

Parameters:

tag - Implicit tag.

ostream - Output stream.

Throws:

java.io.IOException - If an error occurred.

getTemplate

public static EncryptedContentInfo.Template getTemplate()