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Status: Verified (3)

RFC 4492, "Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS)", May 2006

Note: This RFC has been obsoleted by RFC 8422

Source of RFC: tls (sec)

Errata ID: 2389
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Juho Vähä-Herttua
Date Reported: 2010-07-23
Verifier Name: Sean Turner
Date Verified: 2011-03-26

Section 5.4 says:

   point:   This is the byte string representation of an elliptic curve
      point following the conversion routine in Section 4.3.6 of ANSI
      X9.62 [7].  This byte string may represent an elliptic curve point
      in uncompressed or compressed format; it MUST conform to what the
      client has requested through a Supported Point Formats Extension
      if this extension was used.

        enum { ec_basis_trinomial, ec_basis_pentanomial } ECBasisType;

   ec_basis_trinomial:   Indicates representation of a characteristic-2
      field using a trinomial basis.

   ec_basis_pentanomial:   Indicates representation of a
      characteristic-2 field using a pentanomial basis.

It should say:

   point:   This is the byte string representation of an elliptic curve
      point following the conversion routine in Section 4.3.6 of ANSI
      X9.62 [7].  This byte string may represent an elliptic curve point
      in uncompressed or compressed format; it MUST conform to what the
      client has requested through a Supported Point Formats Extension
      if this extension was used.

        enum {
            ec_basis_trinomial(1), ec_basis_pentanomial(2),
            (255)
        } ECBasisType;

   ec_basis_trinomial:   Indicates representation of a characteristic-2
      field using a trinomial basis.

   ec_basis_pentanomial:   Indicates representation of a
      characteristic-2 field using a pentanomial basis.

Notes:

The ECBasisType enumeration is submitted as part of the ECParameters structure and therefore needs numerical values. It is common to assign numerical values starting from 1 to enums and maximum value of 255 should be enough, since currently there are only two known basis types and it is unlikely to change in the near future.

Errata ID: 3652
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Peter Dettman
Date Reported: 2013-06-13
Verifier Name: Sean Turner
Date Verified: 2013-08-14

Section 5.4 says:

ECBasisType basis;
select (basis) {
    case ec_trinomial:
        opaque  k <1..2^8-1>;
    case ec_pentanomial:
        opaque  k1 <1..2^8-1>;
        opaque  k2 <1..2^8-1>;
        opaque  k3 <1..2^8-1>;
};

It should say:

ECBasisType basis;
select (basis) {
    case ec_basis_trinomial:
        opaque  k <1..2^8-1>;
    case ec_basis_pentanomial:
        opaque  k1 <1..2^8-1>;
        opaque  k2 <1..2^8-1>;
        opaque  k3 <1..2^8-1>;
};

Notes:

ECBasisType is earlier introduced as:
enum { ec_basis_trinomial, ec_basis_pentanomial } ECBasisType;

The cases of the select statement should spell the enum elements correctly.

{spt} Related to: http://www.rfc-editor.org/errata_search.php?eid=2389

Errata ID: 4783
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Florent Tatard
Date Reported: 2016-08-19
Verifier Name: Kathleen Moriarty
Date Verified: 2016-08-24

Section 5.7 says:

Actions of the sender:

   The client selects an ephemeral ECDH public key corresponding to the
   parameters it received from the server according to the ECKAS-DH1
   scheme from IEEE 1363 [6].  It conveys this information to the client
   in the ClientKeyExchange message using the format defined above.

It should say:

Actions of the sender:

   The client selects an ephemeral ECDH public key corresponding to the
   parameters it received from the server according to the ECKAS-DH1
   scheme from IEEE 1363 [6].  It conveys this information to the server
   in the ClientKeyExchange message using the format defined above.

Notes:

The client conveys data to the server, not itself.

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