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RE: Q: Why IPSEC to be used only in CBC mode & not other like CFB or OFB ?





< -----Original Message-----
< From: Helger Lipmaa [mailto:helger@cyber.ee]
< Sent: Saturday, March 04, 2000 12:06 AM
< To: Paul Koning
< Cc: kent@bbn.com; ipsec@lists.tislabs.com
< Subject: RE: Q: Why IPSEC to be used only in CBC mode & not other like
< CFB or OFB ?
< 
< Note that 
< in the case
< of CBC mode only XOR or the first two ciphertext blocks would 
< reveal the
< XOR of corresponding plaintext blocks. 
< 
< Helger Lipmaa
< Küberneetika AS
< http://home.cyber.ee/helger
<
I think it pertain to CFB mode, not to CBC. I am correct?

Ivars Suba