RFC 7748, "Elliptic Curves for Security", January 2016

Errata ID: 7096
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: James Muir
Date Reported: 2022-08-18
Held for Document Update by: Nick Sullivan
Date Held: 2025-01-18

Section Appendix A says:

# section A.1 sage code:

       for A in xrange(3, int(1e9)):
           if (A-2) % 4 != 0:
             continue

# section A.3 sage code:

       for uInt in range(1, 1e3):
         u = F(uInt)

It should say:

# section A.1 sage code:

       for A in xsrange(3, int(1e9)):
           if (A-2) % 4 != 0:
             continue

# section A.3 sage code:

       for uInt in xsrange(1, int(1e3)):
         u = F(uInt)

Notes:

"xrange" is not recognized by Sage with python 3, so the script from section A.1 fails with a syntax error (using "xrange" likely worked fine for Sage with python 2). The suggested changes in A.3 are just for consistency.

Held for Document Update. Errata 7096 updates Sage code in Appendix A to make it compatible with Python 3 by replacing 'xrange' with 'xsrange'. This change addresses a compatibility issue for modern implementations but does not affect the cryptographic security or functionality of the protocol, making it low-priority and suitable for future document updates. - CFRG co-chair

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