PyCrypto changelog

Changelog History

Page 3

• v1.9.alpha4 Changes

      * Fix compilation problem on Windows.
  
      * HMAC.py fixed to work with pre-2.2 Pythons
  
      * setup.py now dies if built with Python 1.x
  

• v1.9.alpha3 Changes

      * Fix a ref-counting bug that caused core dumps.  
        (Reported by Piers Lauder and an anonymous SF poster.)
  

• v1.9.alpha2 Changes

      * (Backwards incompatible) The old Crypto.Hash.HMAC module is
        gone, replaced by a copy of hmac.py from Python 2.2's standard
        library.  It will display a warning on interpreter versions
        older than 2.2.
  
      * (Backwards incompatible) Restored the Crypto.Protocol package,
        and modernized and tidied up the two modules in it,
        AllOrNothing.py and Chaffing.py, renaming various methods
        and changing the interface.
  
      * (Backwards incompatible) Changed the function names in
        Crypto.Util.RFC1751.
  
      * Restored the Crypto.PublicKey package at user request.  I
        think I'll leave it in the package and warn about it in the
        documentation.  I hope that eventually I can point to
        someone else's better public-key code, and at that point I
        may insert warnings and begin the process of deprecating
        this code.
  
      * Fix use of a Python 2.2 C function, replacing it with a 
        2.1-compatible equivalent.  (Bug report and patch by Andrew
        Eland.)  
  
      * Fix endianness bugs that caused test case failures on Sparc,
        PPC, and doubtless other platforms.
  
      * Fixed compilation problem on FreeBSD and MacOS X.
  
      * Expanded the test suite (requires Sancho, from 
        http://www.mems-exchange.org/software/sancho/)
  
      * Added lots of docstrings, so 'pydoc Crypto' now produces 
        helpful output.  (Open question: maybe *all* of the documentation
        should be moved into docstrings?)
  
      * Make test.py automatically add the build/* directory to sys.path.
  
      * Removed 'inline' declaration from C functions.  Some compilers
        don't support it, and Python's pyconfig.h no longer tells you whether
        it's supported or not.  After this change, some ciphers got slower,
        but others got faster.
  
      * The C-level API has been changed to reduce the amount of
        memory-to-memory copying.   This makes the code neater, but 
        had ambiguous performance effects; again, some ciphers got slower
        and others became faster.  Probably this is due to my compiler
        optimizing slightly worse or better as a result.
  
      * Moved C source implementations into src/ from block/, hash/, 
        and stream/.  Having Hash/ and hash/ directories causes problems
        on case-insensitive filesystems such as Mac OS.
  
      * Cleaned up the C code for the extensions.
  

• v1.9.alpha1 Changes

      * Added Crypto.Cipher.AES.
  
      * Added the CTR mode and the variable-sized CFB mode from the
        NIST standard on feedback modes. 
  
      * Removed Diamond, HAVAL, MD5, Sapphire, SHA, and Skipjack.  MD5
        and SHA are included with Python; the others are all of marginal
        usefulness in the real world.
  
      * Renamed the module-level constants ECB, CFB, &c., to MODE_ECB,
        MODE_CFB, as part of making the block encryption modules 
        compliant with PEP 272.  (I'm not sure about this change;
        if enough users complain about it, I might back it out.)
  
      * Made the hashing modules compliant with PEP 247 (not backward
        compatible -- the major changes are that the constructor is now 
        MD2.new and not MD2.MD2, and the size of the digest is now 
        given as 'digest_size', not 'digestsize'.
  
      * The Crypto.PublicKey package is no longer installed; the
        interfaces are all wrong, and I have no idea what the right
        interfaces should be.  
  

• v1.1.alpha2 Changes

      * Most importantly, the distribution has been broken into two
  

  parts: exportable, and export-controlled. The exportable part contains all the hashing algorithms, signature-only public key algorithms, chaffing & winnowing, random number generation, various 📚 utility modules, and the documentation.

      The export-controlled part contains public-key encryption
  

  algorithms such as RSA and ElGamal, and bulk encryption algorithms like DES, IDEA, or Skipjack. Getting this code still requires that you go through an access control CGI script, and denies you access if you're outside the US or Canada.

      * Added the RIPEMD hashing algorithm.  (Contributed by
  

  Hirendra Hindocha.)

      * Implemented the recently declassified Skipjack block
  

  encryption algorithm. My implementation runs at 864 K/sec on a 👍 PII/266, which isn't particularly fast, but you're probably better off using another algorithm anyway. :)

      * A simple XOR cipher has been added, mostly for use by the
  

  chaffing/winnowing code. (Contributed by Barry Warsaw.)

      * Added Protocol.Chaffing and Hash.HMAC.py.  (Contributed by
  

  Barry Warsaw.)

      Protocol.Chaffing implements chaffing and winnowing, recently
  

  proposed by R. Rivest, which hides a message (the wheat) by adding many noise messages to it (the chaff). The chaff can be discarded by the receiver through a message authentication code. The neat thing about this is that it allows secret communication without actually having an encryption algorithm, and therefore this falls within the exportable subset.

      * Tidied up randpool.py, and removed its use of a block
  

  cipher; this makes it work with only the export-controlled subset available.

      * Various renamings and reorganizations, mostly internal.
  

• v1.0.2 Changes

      * Changed files to work with Python 1.5; everything has been
  

  📦 re-arranged into a hierarchical package. (Not backward compatible.) 📦 The package organization is: Crypto. Hash. MD2, MD4, MD5, SHA, HAVAL Cipher. ARC2, ARC4, Blowfish, CAST, DES, DES3, Diamond, IDEA, RC5, Sapphire PublicKey. DSA, ElGamal, qNEW, RSA Util. number, randpool, RFC1751

      Since this is backward-incompatible anyway, I also changed
  

  module names from all lower-case to mixed-case: diamond -> Diamond, rc5 -> RC5, etc. That had been an annoying inconsistency for a while.

      * Added CAST5 module contributed by <[email protected]>.
  
      * Added qNEW digital signature algorithm (from the digisign.py
  

  I advertised a while back). (If anyone would like to suggest new algorithms that should be implemented, please do; I think I've got everything that's really useful at the moment, but...)

      * Support for keyword arguments has been added.  This allowed
  

  removing the obnoxious key handling for Diamond and RC5, where the first few bytes of the key indicated the number of rounds to use, and various other parameters. Now you need only do something like:

  from Crypto.Cipher import RC5 obj = RC5.new(key, RC5.ECB, rounds=8)

  (Not backward compatible.)

      * Various function names have been changed, and parameter
  

  names altered. None of these were part of the public interface, so it shouldn't really matter much.

      * Various bugs fixed, the test suite has been expanded, and
  

  🏗 the build process simplified.

      * Updated the documentation accordingly.
  

• v1.0.1 Changes

      * Changed files to work with Python 1.4 .
  
      * The DES and DES3 modules now automatically correct the
  

  parity of their keys.

      * Added R. Rivest's DES test (see http://theory.lcs.mit.edu/~rivest/destest.txt)
  

• v1.0.0 Changes

      * REDOC III succumbed to differential cryptanalysis, and has
  

  🚚 been removed.

      * The crypt and rotor modules have been dropped; they're still
  

  available in the standard Python distribution.

      * The Ultra-Fast crypt() module has been placed in a separate
  

  distribution.

      * Various bugs fixed.
  

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