[Pycrypto-checkins] [ pycrypto-Patches-1618032 ] XCBC-MAC and XCBC-PRF with different ciphers

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Patches item #1618032, was opened at 2006-12-18 05:39
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: XCBC-MAC and XCBC-PRF with different ciphers

Initial Comment:
XCBCMAC.py implements the XCBC-MAC algorithm as described by RFC 3566. It tries to respect PEP 247 (API for Cryptographic Hash Functions)
RFC 3566 describe the algorithm named AES-XCBC-MAC-96. It involves the use of AES in CBC mode with a
set of extensions (XCBC) to overcome this limitation.
Nevertheless since the key used is as long as the block size all ciphers may be used with XCBC
ie we could have (with key length in bytes):
- TripleDES-XCBC-MAC (8)
- AES-XCBC-MAC (16)
- DES-XCBC-MAC (8)
- BLOWFISH-XCBC-MAC (8)
- CAST-XCBC-MAC (8)






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