ARC2 is only interesting for historical reasons, and it should
not be used for new designs. The current implementation trips PyPy4
which may indicate a bug: a cleaner rewriting based on RFC2268
is the quickest solution.
The expression AES.new(key) used to be equivalent
to AES.new(key, AES.MODE_ECB). The same applies to
any other algorithm beside AES.
Since the ECB mode is not a secure default,
the expression AES.new(key) will now raise an exception.
NOTE: this change sets breaks compatibility with PyCrypto
[dlitz@dlitz.net: Included changes from the following commits from the author's pull request:]
- [9c13f9c] Rename 'IV' parameter to 'nonce' for AEAD modes.
- [ca460a7] Made blockalgo.py more PEP-8 compliant; The second parameter
of the _GHASH constructor is now the length of the block
(block_size) and not the full module.
[dlitz@dlitz.net: Fixed unresolved conflict in lib/Crypto/Cipher/blockalgo.py]
[dlitz@dlitz.net: Whitespace changes extracted from the author's pull request:]
- [9c13f9c] Rename 'IV' parameter to 'nonce' for AEAD modes.
- [4ec64d8] Removed last references to ApiUsageError
- [ee46922] Removed most 'import *' statements
