iaik.cms
Interface InputStreamAuthCipherEngine

All Superinterfaces:

CipherEngine, InputStreamCipherEngine, MacAADEngine, MacEngine

public interface InputStreamAuthCipherEngine
extends InputStreamCipherEngine, MacAADEngine

Generic authentication Cipher engine for authenticated encrypting/decrypting data that is supplied by an input stream. Used by class EncryptedContentInfoStream for authenticated content en/decryption with CMS content-type AuthEnvelopedData.
Setups a cipher utility for authenticated encryption/decryption depending on the requested mode and en/deciphers the data that is supplied by an input stream when calling method cipher. Additional data (which shall be authenticated only but not encrypted) may be set by calling method setAdditionalAuthData, and method getMac returns the calculated message authentication code.

Allows the implementation of authenticated en/deciphering utilities that may be independent from the JCE javax.crypto.Cipher engine. The default implementation, however, is based on the javax.crypto.Cipher engine and uses a CipherInputStream for en/decrypting the data that is read by the stream.

An application that implements its own InputStreamAuthCipherEngine has to override the following SecurityProvider methods to plug-in its own implementation:

• getInputStreamAuthCipherEngine(AlgorithmID algorithm, int mode, Key key, AlgorithmParameters params, byte[] aad)
• getInputStreamAuthCipherEngine(AlgorithmID algorithm, int mode, Key key, AlgorithmParameterSpec params, byte[] aad)

See Also:

SecurityProvider

Field Summary

Fields inherited from interface iaik.cms.CipherEngine

CIPHER_DECRYPT, CIPHER_ENCRYPT, CIPHER_NONE, CIPHER_UNWRAP, CIPHER_WRAP

Method Summary

Methods inherited from interface iaik.cms.InputStreamCipherEngine

cipher

Methods inherited from interface iaik.cms.CipherEngine

getParameters, initCipher, initCipher, setSecurityProvider

Methods inherited from interface iaik.cms.MacAADEngine

getAdditionalAuthData, setAdditionalAuthData, setMac

Methods inherited from interface iaik.cms.MacEngine

getMac