RFC Errata
RFC 2040, "The RC5, RC5-CBC, RC5-CBC-Pad, and RC5-CTS Algorithms", October 1996
Source of RFC: LegacySee Also: RFC 2040 w/ inline errata
Errata ID: 587
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Bob Baldwin
Date Reported: 2004-03-22
Section 8 says:
6. Decrypt En to create Pn-1.
It should say:
6. Decrypt En and exclusive-or with Cn-2 to create Pn-1. For short messages where Cn-2 does not exist, use the IV.