All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class iaik.pkcs.EncryptedContentInfo

java.lang.Object
   |
   +----iaik.pkcs.EncryptedContentInfo

public class EncryptedContentInfo

extends Object

EncryptedContentInfo(ASN1Object)

Create an EncryptedContentInfo from an ASN1Object.

EncryptedContentInfo(ObjectID, AlgorithmID)

Create an EncryptedContentInfo with a content type and an encryption algorithm.

EncryptedContentInfo(ObjectID, AlgorithmID, byte[])

Create an EncryptedContentInfo form already encrypted data.

EncryptedContentInfo(PKCS7ContentInfo)

Creates an EncryptedContentInfo from a ContentInfo and an AlgorithmID.

decrypt(Key)

Use the specified key to decrypt the content of this object.

encrypt()

Create a new randon key and encrypt the content of this object.

encrypt(Key, AlgorithmID)

Use the specified key to encrypt the content of this object.

getContentEncryptionAlgorithm()

getContentType()

getEncryptedContent()

hasContent()

toASN1Object()

Returns the EncryptedContentInfo as ASN1Object.

toString()

Returns a string that represents the contents of the extensions.

 public EncryptedContentInfo(PKCS7ContentInfo contentInfo) throws PKCSException

Creates an EncryptedContentInfo from a ContentInfo and an AlgorithmID. To finish the creation one of the encrypt methods must be called.

Parameters:

contentInfo - the PKCS#7 ContentInfo to encrypt

 public EncryptedContentInfo(ObjectID contentType,
                             AlgorithmID contentEncAlg,
                             byte encryptedContent[])

Create an EncryptedContentInfo form already encrypted data. The content is already encrypted and this class is only used for doing the ASN.1 encoding.

Parameters:

contentType - the type of the encrypted content

contentEncAlg - the algorithm used to encrypt the content

encryptedContent - the encrypted content as byte array

 public EncryptedContentInfo(ObjectID contentType,
                             AlgorithmID contentEncAlg)

Create an EncryptedContentInfo with a content type and an encryption algorithm. The encrypted data is transported in another way.

Parameters:

contentType - the type of the encrypted content

contentEncAlg - the algorithm used to encrypt the content

 public EncryptedContentInfo(ASN1Object obj) throws CodingException

Create an EncryptedContentInfo from an ASN1Object.

Parameters:

obj - the ASN1Object of ASN.1 type EncryptedContentInfo

Throws: CodingException

if the ASN.1 object could not be parsed

 public PKCS7ContentInfo decrypt(Key key) throws NoSuchAlgorithmException, KeyException, PKCSException

Use the specified key to decrypt the content of this object.

Parameters:

key - the key to decrypt the content

Returns:

the decrypted content

Throws: NoSuchAlgorithmException

if there is no implementation for the contentEncryptionAlg

Throws: KeyException

if there is a problem with the key

Throws: PKCSException

if there is problem with the PKCS#7 format, ...

 public void encrypt(Key key,
                     AlgorithmID contentEncryptionAlg) throws NoSuchAlgorithmException, KeyException

Use the specified key to encrypt the content of this object.

Parameters:

key - the key to decrypt the content

contentEncAlg - the algorithm to encrypt the content

Throws: NoSuchAlgorithmException

if there is no implementation for the contentEncryptionAlg

Throws: KeyException

if there is a problem with the key

 public Key encrypt()

Create a new randon key and encrypt the content of this object.

Returns:

the created key

 public ASN1Object toASN1Object()

Returns the EncryptedContentInfo as ASN1Object.

Returns:

the EncryptedContentInfo as ASN1Object

 public ObjectID getContentType()

 public AlgorithmID getContentEncryptionAlgorithm()

 public byte[] getEncryptedContent()

 public boolean hasContent()

 public String toString()

Returns a string that represents the contents of the extensions.

Returns:

the string representation

Overrides:

toString in class Object

All Packages  Class Hierarchy  This Package  Previous  Next  Index