yawPyCrypto._CipherStream.ZipEncryptStream

Package yawPyCrypto :: Module _CipherStream :: Class ZipEncryptStream

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Class ZipEncryptStream

     object --+            
              |            
     StreamBase --+        
                  |        
       OutputStream --+    
                      |    
     object --+       |    
              |       |    
AlgoDefinitions --+   |    
                  |   |    
       CipherStream --+    
                      |    
          EncryptStream --+
                          |
                         ZipEncryptStream

Known Subclasses:: ZipEncryptCipher, ZipKeyEncryptCipher

This encryption stream wraps all data by zipping it using compression 9 before encrypting it. This offers a little more protection against crypto attacks by creating pseudo-random data from the input data before encrypting it. This should never need to be instantiated directly.

Method Summary
	`__init__(self)` Initialize the zipped encryption stream by creating the zlib object.
a new object with type S, a subtype of T	`__new__(S, ...)`
	`_checkInst(self)` Instance checking done by all functions of this class.
	`_CipherStream__getPass(self)` Retrieve the password this stream uses. (inherited from `CipherStream`)
	`_feedEncrypt(self, data)` Feed data to the encryption, but zip it before feeding it.
	`_feedEncryptRaw(self, data)` Feed the passed in packet to the encryption, and return any available data which comes back from the encryption routine. (inherited from `EncryptStream`)
	`_feedOutput(self, ptype, pdata)` Feed packet to the output stream. (inherited from `OutputStream`)
	`_start(self, cipher_algo, cipher_mode, IV, password, hash_algo)` Start the encryption stream with the passed in parameters, and create the crypto objects needed for the stream. (inherited from `CipherStream`)
	`_stop(self)` Stop the decryption by finalizing the zlib object.
	`_StreamBase__getData(self)` Retrieve the data from the output property as a string. (inherited from `StreamBase`)
	`_writeOutput(self, data)` Append data to the output. (inherited from `StreamBase`)

Method Details

init(self)
(Constructor)

Initialize the zipped encryption stream by creating the zlib object.

new(S, ...)

Returns:: a new object with type S, a subtype of T

_checkInst(self)

Instance checking done by all functions of this class.

_feedEncrypt(self, data)

Feed data to the encryption, but zip it before feeding it. Returns the data the encryption returns.

_stop(self)

Stop the decryption by finalizing the zlib object.

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