public Class EncryptedData

Returns an ASN.1 encoded EncryptedData type.

EncryptedData   ::= SEQUENCE {
    etype   [0] Int32 -- EncryptionType --,
    kvno    [1] UInt32 OPTIONAL,
    cipher  [2] OCTET STRING -- ciphertext
}

This definition reflects the Network Working Group RFC 4120 specification available at http://www.ietf.org/rfc/rfc4120.txt.

Returns:byte[]

byte array of encoded EncryptedData object.

Exceptions

Asn1Exception:

if an error occurs while decoding an ASN1 encoded data.

IOException:

if an I/O error occurs while reading encoded data.

Overrides java.lang.Object.clone.

Doc from java.lang.Object.clone.

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

x.clone() != x

x.clone().getClass() == x.getClass()

x.clone().equals(x)

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

Returns the raw cipher text bytes, not in ASN.1 encoding.

Parse (unmarshal) an EncryptedData from a DER input stream. This form parsing might be used when expanding a value which is part of a constructed sequence and uses explicitly tagged type.

Parameters

data:DerInputStream

the Der input stream value, which contains one or more marshaled value.

explicitTag:byte

tag number.

optional:boolean

indicate if this data field is optional

Returns:EncryptedData

an instance of EncryptedData.

Exceptions

Asn1Exception:

if an error occurs while decoding an ASN1 encoded data.

IOException:

if an I/O error occurs while reading encoded data.

Reset asn.1 data stream after decryption, remove redundant bytes.

Parameters

data:byte[]

the decrypted data from decrypt().

Returns:byte[]

the reset byte array which holds exactly one asn1 datum including its tag and length.