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RFC 4226, "HOTP: An HMAC-Based One-Time Password Algorithm", December 2005

Source of RFC: IETF - NON WORKING GROUP
Area Assignment: sec

Errata ID: 2401
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT

Reported By: Alfred Hoenes
Date Reported: 2006-01-18
Held for Document Update by: Sean Turner
Date Held: 2010-07-30

Section A.1 says:

   Let IntDiv(a,b) denote the integer division algorithm that takes
|  input integers a, b where a >= b >= 1 and returns integers (q,r)
|
   the quotient and remainder, respectively, of the division of a by b.
   (Thus, a = bq + r and 0 <= r < b.)

It should say:

   Let IntDiv(a,b) denote the integer division algorithm that takes
|  input integers a, b where  b >= 1  and returns integers (q,r), the
   quotient and remainder, respectively, of the division of a by b.
   (Thus, a = bq + r and 0 <= r < b.)

Notes:

inappropriate restriction specified + formatting flaw.

On page 17, Appendix A.1:
The restriction "a >= b" is not necessary and in fact inappropriate; the additional blank line seems to be an artifact of the editing process. Thus, the above text should better read [as above].

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