Re: [openpgp] SHA3 algorithm ids.

This is an IANA maintained registry so IANA picks the code points while
they are in charge.

But what is sometimes done when there is a working group working on a
protocol with a lot of code points, the registry is moved out of IANA
control and someone in the WG manages it. This is the way PKIX worked.

It is also possible that the way to do this would be for a single document
to propose code points for all the active crypto specs.



On Sat, Aug 8, 2015 at 5:21 AM, Werner Koch <wk(_at_)gnupg(_dot_)org> wrote:

Hi!

Now that an official SHA3 specs has been published I would like to see
algorithm ids assigned.  Although it is some time until we can publish
rfc-4880bis, it would be useful to agree on the algorithm ids now.
This would be helpful for experimental implementations.  Thus what about
this new table with the SHA2 drop in replacements:

      ID           Algorithm                             Text Name
      --           ---------                             ---------
      1          - MD5 [HAC]                             "MD5"
      2          - SHA-1 [FIPS180]                       "SHA1"
      3          - RIPE-MD/160 [HAC]                     "RIPEMD160"
      4          - Reserved
      5          - Reserved
      6          - Reserved
      7          - Reserved
      8          - SHA256 [FIPS180]                      "SHA256"
      9          - SHA384 [FIPS180]                      "SHA384"
      10         - SHA512 [FIPS180]                      "SHA512"
      11         - SHA224 [FIPS180]                      "SHA224"
      12         - SHA3-224 [FIPS202]                    "SHA3-224"
      13         - SHA3-256 [FIPS202]                    "SHA3-256"
      14         - SHA3-384 [FIPS202]                    "SHA3-384"
      15         - SHA3-512 [FIPS202]                    "SHA3-512"
      100 to 110 - Private/Experimental algorithm

Note that I ordered SHA3-224 first; when we did SHA2 we forgot about 224
and thus it ended up out of order.

I am not sure about the text name.  Is a dash okay (cf. armor header)?

The OIDS are:

   The hexadecimal representations for the
   currently defined hash algorithms are as follows:

     [...]

     - SHA3-224:   0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x07
     - SHA3-256:   0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x08
     - SHA3-384:   0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x09
     - SHA3-512:   0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x0a

   The ASN.1 Object Identifiers (OIDs) are as follows:

     [...]

     - SHA3-224:   2.16.840.1.101.3.4.2.7
     - SHA3-256:   2.16.840.1.101.3.4.2.8
     - SHA3-384:   2.16.840.1.101.3.4.2.9
     - SHA3-512:   2.16.840.1.101.3.4.2.10

   The full hash prefixes for these are as follows:

       [...]

       SHA3-224:   0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
                   0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x07, 0x05,
                   0x00, 0x04, 0x40

       SHA3-256:   0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
                   0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x07, 0x05,
                   0x00, 0x04, 0x40

       SHA3-384:   0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
                   0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x07, 0x05,
                   0x00, 0x04, 0x40

       SHA3-512:   0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
                   0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x07, 0x05,
                   0x00, 0x04, 0x40



Shalom-Salam,

   Werner


--
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.

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