org.mozilla.jss.pkcs7

Class EncryptedContentInfo

Implemented Interfaces:
ASN1Value

public class EncryptedContentInfo
extends java.lang.Object
implements ASN1Value

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

Nested Class Summary

static class
EncryptedContentInfo.Template
A template file for decoding a EnvelopedData blob

Constructor Summary

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

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(OutputStream ostream)
Write this value's DER encoding to an output stream using its own base tag.
void
encode(Tag tag, 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()

Constructor Details

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 Details

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 CryptoManager.NotInitializedException,
                   NoSuchAlgorithmException,
                   InvalidKeyException,
                   InvalidAlgorithmParameterException,
                   TokenException,
                   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.

decrypt

public byte[] decrypt(Password pass,
                      KeyGenerator.CharToByteConverter charToByteConverter)
            throws IllegalStateException,
                   CryptoManager.NotInitializedException,
                   NoSuchAlgorithmException,
                   InvalidBERException,
                   IOException,
                   InvalidKeyException,
                   InvalidAlgorithmParameterException,
                   TokenException,
                   IllegalBlockSizeException,
                   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.

encode

public void encode(OutputStream ostream)
            throws IOException
Write this value's DER encoding to an output stream using its own base tag.
Specified by:
encode in interface ASN1Value

encode

public void encode(Tag tag,
                   OutputStream ostream)
            throws IOException
Write this value's DER encoding to an output stream using an implicit tag.
Specified by:
encode in interface ASN1Value

getContentEncryptionAlgorithm

public AlgorithmIdentifier getContentEncryptionAlgorithm()

getContentType

public OBJECT_IDENTIFIER getContentType()

getEncryptedContent

public OCTET_STRING getEncryptedContent()

getTag

public Tag getTag()
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

getTemplate

public static EncryptedContentInfo.Template getTemplate()

hasEncryptedContent

public boolean hasEncryptedContent()