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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: 2409
Status: Held for Document Update
Type: Editorial
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 C says: 

In Appendix C, the source code on page 30 (lower half) and
page 31 contains improperly indented lines.

The following three line groups should be indented by 6 more character
positions to make them conformant to RFC style 'nice' format:

- on page 30:

     String result = null;
     int digits = addChecksum ? (codeDigits + 1) : codeDigits;

- on page 30:

     if ( (0<=truncationOffset) &&
            (truncationOffset<(hash.length-4)) ) {
         offset = truncationOffset;
     }

- on page 31:

     if (addChecksum) {
         otp =  (otp * 10) + calcChecksum(otp, codeDigits);
     }
     result = Integer.toString(otp);
     while (result.length() < digits) {
         result = "0" + result;
     }
     return result;

It should say:

 [see above]

Notes:

[ further formatting (indentation) issues ]

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