LAMPS                                                          S. Turner
Internet-Draft                                                     sn3rd
Intended status: Standards Track                           P. Kampanakis
Expires: 8 May 2025                                           J. Massimo
                                                                     AWS
                                                           B. Westerbaan
                                                              Cloudflare
                                                         4 November 2024


Internet X.509 Public Key Infrastructure - Algorithm Identifiers for the
       Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM)
               draft-ietf-lamps-kyber-certificates-06

Abstract

   The Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM) is a
   quantum-resistant key-encapsulation mechanism (KEM).  This document
   describes the conventions for using the ML-KEM in X.509 Public Key
   Infrastructure.  The conventions for the subject public keys and
   private keys are also described.

About This Document

   This note is to be removed before publishing as an RFC.

   The latest revision of this draft can be found at draft-ietf-lamps-kyber-">https://lamps-
   draft-ietf-lamps-kyber-">wg.github.io/kyber-certificates/#go.draft-ietf-lamps-kyber-
   certificates.html.  Status information for this document may be found
   at https://datatracker.ietf.org/doc/draft-ietf-lamps-kyber-
   certificates/.

   Discussion of this document takes place on the Limited Additional
   Mechanisms for PKIX and SMIME (lamps) Working Group mailing list
   (mailto:spasm@ietf.org), which is archived at
   https://mailarchive.ietf.org/arch/browse/spasm/.  Subscribe at
   https://www.ietf.org/mailman/listinfo/spasm/.

   Source for this draft and an issue tracker can be found at
   https://github.com/lamps-wg/kyber-certificates.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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Table of Contents

   1.  Introduction
     1.1.  Applicability Statement
   2.  Conventions and Definitions
   3.  Algorithm Identifiers
   4.  Subject Public Key Fields
   5.  Private Key Format
   6.  Security Considerations
   7.  IANA Considerations
   8.  References
     8.1.  Normative References
     8.2.  Informative References
   Appendix A.  ASN.1 Module
   Appendix B.  Security Strengths
   Appendix C.  Examples
     C.1.  Example Private Key
     C.2.  Example Public Key
     C.3.  Example Certificate
   Acknowledgments
   Authors' Addresses

1.  Introduction

   The Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM)
   standardized in [FIPS203] is a quantum-resistant key-encapsulation
   mechanism (KEM) standardized by the US National Institute of
   Standards and Technology (NIST) PQC Project [NIST-PQC].  Prior to
   standardization, the earlier versions of the mechanism were known as
   Kyber.  ML-KEM and Kyber are not compatible.  This document specifies
   the use of ML-KEM in Public Key Infrastructure X.509 (PKIX)
   certificates [RFC5280] at three security levels: ML-KEM-512, ML-KEM-
   768, and ML-KEM-1024, using object identifiers assigned by NIST.  The
   private key format is also specified.

1.1.  Applicability Statement

   ML-KEM certificates are used in protocols where the public key is
   used to generate and encapsulate a shared secret used to derive a
   symmetric key used to encrypt a payload; see
   [I-D.ietf-lamps-cms-kyber].  To be used in TLS, ML-KEM certificates
   could only be used as end-entity identity certificates and would
   require significant updates to the protocol; see
   [I-D.celi-wiggers-tls-authkem].

2.  Conventions and Definitions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

3.  Algorithm Identifiers

   The AlgorithmIdentifier type, which is included herein for
   convenience, is defined as follows:

    AlgorithmIdentifier{ALGORITHM-TYPE, ALGORITHM-TYPE:AlgorithmSet} ::=
      SEQUENCE {
        algorithm   ALGORITHM-TYPE.&id({AlgorithmSet}),
        parameters  ALGORITHM-TYPE.
                      &Params({AlgorithmSet}{@algorithm}) OPTIONAL
      }

      |  NOTE: The above syntax is from [RFC5912] and is compatible with
      |  the 2021 ASN.1 syntax [X680].  See [RFC5280] for the 1988 ASN.1
      |  syntax.

   The fields in AlgorithmIdentifier have the following meanings:

   *  algorithm identifies the cryptographic algorithm with an object
      identifier.

   *  parameters, which are optional, are the associated parameters for
      the algorithm identifier in the algorithm field.

   The AlgorithmIdentifier for a ML-KEM public key MUST use one of the
   id-alg-ml-kem object identifiers listed below, based on the security
   level.  The parameters field of the AlgorithmIdentifier for the ML-
   KEM public key MUST be absent.

   When any of the ML-KEM AlgorithmIdentifier appears in the
   SubjectPublicKeyInfo field of an X.509 certificate, the key usage
   certificate extension MUST only contain keyEncipherment
   Section 4.2.1.3 of [RFC5280].

     nistAlgorithms OBJECT IDENTIFIER ::= { joint-iso-ccitt(2)
       country(16) us(840) organization(1) gov(101) csor(3)
       nistAlgorithm(4) }

     kems OBJECT IDENTIFIER ::= { nistAlgorithms 4 }

     id-alg-ml-kem-512 OBJECT IDENTIFIER ::= { kems 1 }

     id-alg-ml-kem-768 OBJECT IDENTIFIER ::= { kems 2 }

     id-alg-ml-kem-1024 OBJECT IDENTIFIER ::= { kems 3 }

     pk-ml-kem-512 PUBLIC-KEY ::= {
       IDENTIFIER id-alg-ml-kem-512
       -- KEY no ASN.1 wrapping --
       PARAMS ARE absent
       CERT-KEY-USAGE { keyEncipherment }
       --- PRIVATE-KEY no ASN.1 wrapping --
       }

     pk-ml-kem-768 PUBLIC-KEY ::= {
       IDENTIFIER id-alg-ml-kem-768
       -- KEY no ASN.1 wrapping --
       PARAMS ARE absent
       CERT-KEY-USAGE { keyEncipherment }
       --- PRIVATE-KEY no ASN.1 wrapping --
       }

     pk-ml-kem-1024 PUBLIC-KEY ::= {
       IDENTIFIER id-alg-ml-kem-1024
       -- KEY no ASN.1 wrapping --
       PARAMS ARE absent
       CERT-KEY-USAGE { keyEncipherment }
       --- PRIVATE-KEY no ASN.1 wrapping --
       }

       ML-KEM-PublicKey ::= OCTET STRING

       ML-KEM-PrivateKey ::= OCTET STRING

   No additional encoding of the ML-KEM public key value is applied in
   the SubjectPublicKeyInfo field of an X.509 certificate [RFC5280].
   However, whenever the ML-KEM public key value appears outside of a
   certificate, it MAY be encoded as an OCTET STRING.

   No additional encoding of the ML-KEM private key value is applied in
   the PrivateKeyInfo field of an Asymmetric Key Package [RFC5958].
   However, whenever the ML-KEM private key value appears outside of a
   Asymmetric Key Package, it MAY be encoded as an OCTET STRING.

4.  Subject Public Key Fields

   In the X.509 certificate, the subjectPublicKeyInfo field has the
   SubjectPublicKeyInfo type, which has the following ASN.1 syntax:

     SubjectPublicKeyInfo {PUBLIC-KEY: IOSet} ::= SEQUENCE {
         algorithm        AlgorithmIdentifier {PUBLIC-KEY, {IOSet}},
         subjectPublicKey BIT STRING
     }

      |  NOTE: The above syntax is from [RFC5912] and is compatible with
      |  the 2021 ASN.1 syntax [X680].  See [RFC5280] for the 1988 ASN.1
      |  syntax.

   The fields in SubjectPublicKeyInfo have the following meaning:

   *  algorithm is the algorithm identifier and parameters for the
      public key (see above).

   *  subjectPublicKey contains the byte stream of the public key.

   Appendix C.2 contains examples for ML-KEM public keys encoded using
   the textual encoding defined in [RFC7468].

5.  Private Key Format

   In short, an ML-KEM private key is encoded by storing its 64-octet
   seed in the privateKey field as follows.

   [FIPS203] specifies two formats for an ML-KEM private key: a 64-octet
   seed and an (expanded) private key, which is referred to as the
   decapsulation key.  The expanded private key (and public key) is
   computed from the seed using ML-KEM.KeyGen_internal(d,z) (algorithm
   16) using the first 32 octets as _d_ and the remaining 32 octets as
   _z_.

   "Asymmetric Key Packages" [RFC5958] describes how to encode a private
   key in a structure that both identifies what algorithm the private
   key is for and allows for the public key and additional attributes
   about the key to be included as well.  For illustration, the ASN.1
   structure OneAsymmetricKey is replicated below.

     OneAsymmetricKey ::= SEQUENCE {
       version                  Version,
       privateKeyAlgorithm      SEQUENCE {
       algorithm                PUBLIC-KEY.&id({PublicKeySet}),
       parameters               PUBLIC-KEY.&Params({PublicKeySet}
                                  {@privateKeyAlgorithm.algorithm})
                                     OPTIONAL}
       privateKey               OCTET STRING (CONTAINING
                                  PUBLIC-KEY.&PrivateKey({PublicKeySet}
                                    {@privateKeyAlgorithm.algorithm})),
       attributes           [0] Attributes OPTIONAL,
       ...,
       [[2: publicKey       [1] BIT STRING (CONTAINING
                                  PUBLIC-KEY.&Params({PublicKeySet}
                                    {@privateKeyAlgorithm.algorithm})
                                    OPTIONAL,
       ...
     }

      |  NOTE: The above syntax is from [RFC5958] and is compatible with
      |  the 2021 ASN.1 syntax [X680].

   When used in a OneAsymmetricKey type, the privateKey OCTET STRING
   contains the raw octet string encoding of the 64-octet seed.  The
   publicKey field SHOULD be omitted because the public key can be
   computed as noted earlier in this section.

   Appendix C.1 contains examples for ML-KEM private keys encoded using
   the textual encoding defined in [RFC7468].

6.  Security Considerations

   The Security Considerations section of [RFC5280] applies to this
   specification as well.

   Protection of the private-key information, i.e., the seed, is vital
   to public-key cryptography.  Disclosure of the private-key material
   to another entity can lead to masquerades.

   For ML-KEM specific security considerations refer to
   [I-D.sfluhrer-cfrg-ml-kem-security-considerations].

   The generation of private keys relies on random numbers.  The use of
   inadequate pseudo-random number generators (PRNGs) to generate these
   values can result in little or no security.  An attacker may find it
   much easier to reproduce the PRNG environment that produced the keys,
   searching the resulting small set of possibilities, rather than brute
   force searching the whole key space.  The generation of quality
   random numbers is difficult, and [RFC4086] offers important guidance
   in this area.

   ML-KEM key generation as standardized in [FIPS203] has specific
   requirements around randomness generation, described in section 3.3,
   'Randomness generation'.

   Key formats have implications on KEM binding properties, initially
   formalized in [CDM23].  Per the analysis of the final [FIPS203] in
   [KEMMY24], a compliant instantiation of ML-KEM is LEAK-BIND-K-PK-
   secure and LEAK-BIND-K-CT-secure when using the expanded key format,
   but not MAL-BIND-K-PK-secure nor MAL-BIND-K-CT-secure.  This means
   that the computed shared secret binds to the encapsulation key used
   to compute it against a malicious adversary that has access to
   leaked, honestly-generated key material but is not capable of
   manufacturing maliciously generated keypairs.  This binding to the
   encapsulation key broadly protects against re-encapsulation attacks
   but not completely.

   Using the 64-byte seed format provides a step up in binding security
   by mitigating an attack enabled by the hash of the public
   encapsulation key stored in the expanded private decapsulation key
   format, providing MAL-BIND-K-CT security and LEAK-BIND-K-PK security.

7.  IANA Considerations

   For the ASN.1 Module in Appendix A, IANA is requested to assign an
   object identifier (OID) for the module identifier (TBD) with a
   Description of "id-mod-x509-ml-kem-2024".  The OID for the module
   should be allocated in the "SMI Security for PKIX Module Identifier"
   registry (1.3.6.1.5.5.7.0).

8.  References

8.1.  Normative References

   [FIPS203]  "Module-Lattice-Based Key-Encapsulation Mechanism
              Standard", National Institute of Standards and Technology,
              DOI 10.6028/nist.fips.203, August 2024,
              <https://doi.org/10.6028/nist.fips.203>.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/rfc/rfc2119>.

   [RFC5280]  Cooper, D., Santesson, S., Farrell, S., Boeyen, S.,
              Housley, R., and W. Polk, "Internet X.509 Public Key
              Infrastructure Certificate and Certificate Revocation List
              (CRL) Profile", RFC 5280, DOI 10.17487/RFC5280, May 2008,
              <https://www.rfc-editor.org/rfc/rfc5280>.

   [RFC5912]  Hoffman, P. and J. Schaad, "New ASN.1 Modules for the
              Public Key Infrastructure Using X.509 (PKIX)", RFC 5912,
              DOI 10.17487/RFC5912, June 2010,
              <https://www.rfc-editor.org/rfc/rfc5912>.

   [RFC5958]  Turner, S., "Asymmetric Key Packages", RFC 5958,
              DOI 10.17487/RFC5958, August 2010,
              <https://www.rfc-editor.org/rfc/rfc5958>.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/rfc/rfc8174>.

   [RFC9629]  Housley, R., Gray, J., and T. Okubo, "Using Key
              Encapsulation Mechanism (KEM) Algorithms in the
              Cryptographic Message Syntax (CMS)", RFC 9629,
              DOI 10.17487/RFC9629, August 2024,
              <https://www.rfc-editor.org/rfc/rfc9629>.

   [X680]     ITU-T, "Information technology - Abstract Syntax Notation
              One (ASN.1): Specification of basic notation", ITU-T
              Recommendation X.680, ISO/IEC 8824-1:2021, February 2021,
              <https://www.itu.int/rec/T-REC-X.680>.

   [X690]     ITU-T, "Information technology - Abstract Syntax Notation
              One (ASN.1): ASN.1 encoding rules: Specification of Basic
              Encoding Rules (BER), Canonical Encoding Rules (CER) and
              Distinguished Encoding Rules (DER)", ITU-T
              Recommendation X.690, ISO/IEC 8825-1:2021, February 2021,
              <https://www.itu.int/rec/T-REC-X.690>.

8.2.  Informative References

   [CDM23]    Cremers, C., Dax, A., and N. Medinger, "Keeping Up with
              the KEMs: Stronger Security Notions for KEMs and automated
              analysis of KEM-based protocols", 2023,
              <https://eprint.iacr.org/2023/1933.pdf>.

   [I-D.celi-wiggers-tls-authkem]
              Wiggers, T., Celi, S., Schwabe, P., Stebila, D., and N.
              Sullivan, "KEM-based Authentication for TLS 1.3", Work in
              Progress, Internet-Draft, draft-celi-wiggers-tls-authkem-
              04, 17 October 2024,
              <https://datatracker.ietf.org/doc/html/draft-celi-wiggers-
              tls-authkem-04>.

   [I-D.ietf-lamps-cms-kyber]
              Prat, J., Ounsworth, M., and D. Van Geest, "Use of ML-KEM
              in the Cryptographic Message Syntax (CMS)", Work in
              Progress, Internet-Draft, draft-ietf-lamps-cms-kyber-05,
              15 October 2024, <https://datatracker.ietf.org/doc/html/
              draft-ietf-lamps-cms-kyber-05>.

   [I-D.sfluhrer-cfrg-ml-kem-security-considerations]
              Fluhrer, S., Dang, Q., Mattsson, J. P., Milner, K., and D.
              Shiu, "ML-KEM Security Considerations", Work in Progress,
              Internet-Draft, draft-sfluhrer-cfrg-ml-kem-security-
              considerations-01, 11 October 2024,
              <https://datatracker.ietf.org/doc/html/draft-sfluhrer-
              cfrg-ml-kem-security-considerations-01>.

   [KEMMY24]  Schmieg, S., "Unbindable Kemmy Schmidt: ML-KEM is neither
              MAL-BIND-K-CT nor MAL-BIND-K-PK", 2024,
              <https://eprint.iacr.org/2024/523.pdf>.

   [NIST-PQC] National Institute of Standards and Technology (NIST),
              "Post-Quantum Cryptography Project", 20 December 2016,
              <https://csrc.nist.gov/projects/post-quantum-
              cryptography>.

   [RFC4086]  Eastlake 3rd, D., Schiller, J., and S. Crocker,
              "Randomness Requirements for Security", BCP 106, RFC 4086,
              DOI 10.17487/RFC4086, June 2005,
              <https://www.rfc-editor.org/rfc/rfc4086>.

   [RFC7468]  Josefsson, S. and S. Leonard, "Textual Encodings of PKIX,
              PKCS, and CMS Structures", RFC 7468, DOI 10.17487/RFC7468,
              April 2015, <https://www.rfc-editor.org/rfc/rfc7468>.

Appendix A.  ASN.1 Module

   This appendix includes the ASN.1 module [X680] for the ML-KEM.  Note
   that as per [RFC5280], certificates use the Distinguished Encoding
   Rules; see [X690].  This module imports objects from [RFC5912] and
   [RFC9629].

   <CODE BEGINS>
   X509-ML-KEM-2024
   { iso(1) identified-organization(3) dod(6)
     internet(1) security(5) mechanisms(5) pkix(7) id-mod(0)
     id-mod-x509-ml-kem-2024(TBD) }

   DEFINITIONS IMPLICIT TAGS ::= BEGIN

   EXPORTS ALL;

   IMPORTS
     PUBLIC-KEY
       FROM AlgorithmInformation-2009  -- [RFC 5912]
         { iso(1) identified-organization(3) dod(6) internet(1)
           security(5) mechanisms(5) pkix(7) id-mod(0)
           id-mod-algorithmInformation-02(58) }

     KEM-ALGORITHM
       FROM KEMAlgorithmInformation-2023  -- [RFC 9629]
         { iso(1) identified-organization(3) dod(6) internet(1)
           security(5) mechanisms(5) pkix(7) id-mod(0)
           id-mod-kemAlgorithmInformation-2023(109) };

   --
   -- ML-KEM Identifiers
   --

   nistAlgorithms OBJECT IDENTIFIER ::= { joint-iso-ccitt(2)
     country(16) us(840) organization(1) gov(101) csor(3)
     nistAlgorithm(4) }

   kems OBJECT IDENTIFIER ::= { nistAlgorithms 4 }

   id-alg-ml-kem-512 OBJECT IDENTIFIER ::= { kems 1 }

   id-alg-ml-kem-768 OBJECT IDENTIFIER ::= { kems 2 }

   id-alg-ml-kem-1024 OBJECT IDENTIFIER ::= { kems 3 }

     --
     -- Public Key Algorithms
     --
     -- To use the following with the PKIX1Explicit-2009 [RFC5912], replace
     -- the PublicKeyAlgorithms therein with the following:
     --
     -- PublicKeyAlgorithms PUBLIC-KEY ::= {
     --   PKIXAlgs-2009.PublicKeys,
     --   ...,
     --   PKIX1-PSS-OAEP-Algorithms-2009.PublicKeys,
     --   X509-ML-KEM-2024.PublicKeys }

     --
     -- Public Key (pk-) Algorithms
     --

   PublicKeys PUBLIC-KEY ::= {
     -- This expands PublicKeys from RFC 5912
     pk-ml-kem-512 |
     pk-ml-kem-768 |
     pk-ml-kem-1024,
     ...
     }

   --
   -- ML-KEM Public Keys
   --

   pk-ml-kem-512 PUBLIC-KEY ::= {
     IDENTIFIER id-alg-ml-kem-512
     -- KEY no ASN.1 wrapping --
     PARAMS ARE absent
     CERT-KEY-USAGE { keyEncipherment }
     --- PRIVATE-KEY no ASN.1 wrapping --
     }

   pk-ml-kem-768 PUBLIC-KEY ::= {
     IDENTIFIER id-alg-ml-kem-768
     -- KEY no ASN.1 wrapping --
     PARAMS ARE absent
     CERT-KEY-USAGE { keyEncipherment }
     --- PRIVATE-KEY no ASN.1 wrapping --
     }

   pk-ml-kem-1024 PUBLIC-KEY ::= {
     IDENTIFIER id-alg-ml-kem-1024
     -- KEY no ASN.1 wrapping --
     PARAMS ARE absent
     CERT-KEY-USAGE { keyEncipherment }
     --- PRIVATE-KEY no ASN.1 wrapping --
     }

   END
   <CODE ENDS>

Appendix B.  Security Strengths

   Instead of defining the strength of a quantum algorithm in a
   traditional manner using the imprecise notion of bits of security,
   NIST has defined security levels by picking a reference scheme, which
   NIST expects to offer notable levels of resistance to both quantum
   and classical attack.  To wit, a KEM algorithm that achieves NIST PQC
   security must require computational resources to break IND-CCA2
   security comparable or greater than that required for key search on
   AES-128, AES-192, and AES-256 for Levels 1, 3, and 5, respectively.
   Levels 2 and 4 use collision search for SHA-256 and SHA-384 as
   reference.

      |  TODO: what should go in this table?

    +=======+===============+=============+========+============+====+
    | Level | Parameter Set | Encap.  Key | Decap. | Ciphertext | SS |
    |       |               |             | Key    |            |    |
    +=======+===============+=============+========+============+====+
    | 1     | ML-KEM-512    | 800         | 1632   | 768        | 32 |
    +-------+---------------+-------------+--------+------------+----+
    | 3     | ML-KEM-768    | 1184        | 2400   | 1952       | 32 |
    +-------+---------------+-------------+--------+------------+----+
    | 5     | ML-KEM-1024   | 1568        | 3168   | 2592       | 32 |
    +-------+---------------+-------------+--------+------------+----+

                    Table 1: ML-KEM security strengths

Appendix C.  Examples

   This appendix contains examples of ML-KEM public keys, private keys
   and certificates.

C.1.  Example Private Key

   The following is an example of a ML-KEM-512 private key with hex seed
   0001…3f:

   -----BEGIN PRIVATE KEY-----
   MFICAQAwCwYJYIZIAWUDBAQBBEAAAQIDBAUGBwgJCgsMDQ4PEBESExQVFhcYGRob
   HB0eHyAhIiMkJSYnKCkqKywtLi8wMTIzNDU2Nzg5Ojs8PT4/
   -----END PRIVATE KEY-----

   0  82: SEQUENCE
   2   2:  INTEGER 0
   5  11:  SEQUENCE {
   7   9:   OBJECT IDENTIFIER '2.16.840.1.101.3.4.4.1'
        :   }
   18 64:  OCTET STRING
        :    00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
        :    10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
        :    20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
        :    30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
        :  }

   The following is an example of a ML-KEM-768 private key from the same
   seed.

   -----BEGIN PRIVATE KEY-----
   MFICAQAwCwYJYIZIAWUDBAQCBEAAAQIDBAUGBwgJCgsMDQ4PEBESExQVFhcYGRob
   HB0eHyAhIiMkJSYnKCkqKywtLi8wMTIzNDU2Nzg5Ojs8PT4/
   -----END PRIVATE KEY-----

   0  82: SEQUENCE
   2   2:  INTEGER 0
   5  11:  SEQUENCE {
   7   9:   OBJECT IDENTIFIER '2.16.840.1.101.3.4.4.2'
        :   }
   18 64:  OCTET STRING
        :    00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
        :    10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
        :    20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
        :    30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
        :  }

   The following is an example of a ML-KEM-1024 private key from the
   same seed.

   -----BEGIN PRIVATE KEY-----
   MFICAQAwCwYJYIZIAWUDBAQDBEAAAQIDBAUGBwgJCgsMDQ4PEBESExQVFhcYGRob
   HB0eHyAhIiMkJSYnKCkqKywtLi8wMTIzNDU2Nzg5Ojs8PT4/
   -----END PRIVATE KEY-----

   0  82: SEQUENCE
   2   2:  INTEGER 0
   5  11:  SEQUENCE {
   7   9:   OBJECT IDENTIFIER '2.16.840.1.101.3.4.4.3'
        :   }
   18 64:  OCTET STRING
        :    00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
        :    10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
        :    20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
        :    30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
        :  }

      |  NOTE: The private key is the seed and all three examples keys
      |  use the same seed; therefore, the private above are the same
      |  except for the OID used to represent the ML-KEM algorithm's
      |  security strength.

C.2.  Example Public Key

   The following is the ML-KEM-512 public key corresponding to the
   private key in the previous section.

   -----BEGIN PUBLIC KEY-----
   MIIDMjALBglghkgBZQMEBAEDggMhADmVgV5ZfRBDVc8pqlMzyTJRhp1bzb5IcST2
   Ari2pmwWxHYWSK12XPXYAGtRXpBafwrAdrDGLvoygVPnylcBaZ8TBfHmvG+QsOSb
   aTUSts6ZKouAFt38GmYsfj+WGcvYad13GvMIlszVkYrGy3dGbF53mZbWf/mqvJdQ
   Pyx7fi0ADYZFD7GAfKTKvaRlgloxx4mht6SRqzhydl0yDQtxkg+iE8lAk0Frg7gS
   Tmn2XmLLUADcw3qpoP/3OXDEdy81fSQYnKb1MFVowOI3ajdipoxgXlY8XSCVcuD8
   dTLKKUcpU1VntfxBPF6HktJGRTbMgI+YrddGZPFBVm+QFqkKVBgpqYoEZM5BqLtE
   wtT6PCwglGByjvFKGnxMm5jRIgO0zDUpFgqasteDj3/2tTrgWqMafWRrevpsRZMl
   JqPDdVYZvplMIRwqMcBbNEeDbLIVC+GCna5rBMVTXP9Ubjkrp5dBFyD5JPSQpaxU
   lfITVtVQt4KmTBaItrZVvMeEIZekNML2Vjtbfwmni8xIgjJ4NWHRb0y6tnVUAAUH
   gVcMZmBLgXrRJSKUc26LAYYaS1p0UZuLb+UUiaUHI5Llh2JscTd2V10zgGocjicy
   r5fCaA9RZmMxxOuLvAQxxPloMtrxs8RVKPuhU/bHixwZhwKUfM0zdyekb7U7oR3l
   y0GRNGhZUWy2rXJADzzyCbI2rvNaWArIfrPjD6/WaXPKin3SZ1r0H3oXthQzzRr4
   D3cIhp9mVIhJeYCxrBCgzctjagDthoGzXkKRJMqANQcluF+DperDpKPMFgCQPmUp
   NWC5szblrw1SnawaBIEZMCy3qbzBELlIUb8CEX8ZncSFqFK3Rz8JuDGmgx1bVMC3
   kNIlz2u5LZRiomzbM92lEjx6rw4moLg2Ve6ii/OoB0clAY/WuuS2Ac9huqtxp6PT
   UZejQ+dLSicsEl1UCJZCbYW3lY07OKa6mH7DciXHtEzbEt3kU5tKsII2NoPwS/eg
   nMXEHf6DChsWLgsyQzQ2LwhKFEZ3IzRLrdAA+NjFN8SPmY8FMHzr0e3guBw7xZoG
   WhttY7Js
   -----END PUBLIC KEY-----

   0  818: SEQUENCE {
   4   11:   SEQUENCE {
   6    9:     OBJECT IDENTIFIER '2.16.840.1.101.3.4.4.1'
         :     }
   17 801:   BIT STRING
         :     00 39 95 81 5e 59 7d 10 43 55 cf 29 aa 53 33 c9
         :     32 51 86 9d 5b cd be 48 71 24 f6 02 b8 b6 a6 6c
         :     7f 0a c0 76 b0 c6 2e fa 32 81 53 e7 ca 57 01 69
         :     9f 13 05 f1 e6 bc 6f 90 b0 e4 9b 69 35 12 b6 ce
         :     99 2a 8b 80 16 dd fc 1a 66 2c 7e 3f 96 19 cb d8
         :     69 dd 77 1a f3 08 96 cc d5 91 8a c6 cb 77 46 6c
         :     5e 77 99 96 d6 7f f9 aa bc 97 50 3f 2c 7b 7e 2d
         :     00 0d 86 45 0f b1 80 7c a4 ca bd a4 65 82 5a 31
         :     c7 89 a1 b7 a4 91 ab 38 72 76 5d 32 0d 0b 71 92
         :     0f a2 13 c9 40 93 41 6b 83 b8 12 4e 69 f6 5e 62
         :     cb 50 00 dc c3 7a a9 a0 ff f7 39 70 c4 77 2f 35
         :     7d 24 18 9c a6 f5 30 55 68 c0 e2 37 6a 37 62 a6
         :     8c 60 5e 56 3c 5d 20 95 72 e0 fc 75 32 ca 29 47
         :     29 53 55 67 b5 fc 41 3c 5e 87 92 d2 46 45 36 cc
         :     80 8f 98 ad d7 46 64 f1 41 56 6f 90 16 a9 0a 54
         :     18 29 a9 8a 04 64 ce 41 a8 bb 44 c2 d4 fa 3c 2c
         :     20 94 60 72 8e f1 4a 1a 7c 4c 9b 98 d1 22 03 b4
         :     cc 35 29 16 0a 9a b2 d7 83 8f 7f f6 b5 3a e0 5a
         :     a3 1a 7d 64 6b 7a fa 6c 45 93 25 26 a3 c3 75 56
         :     19 be 99 4c 21 1c 2a 31 c0 5b 34 47 83 6c b2 15
         :     0b e1 82 9d ae 6b 04 c5 53 5c ff 54 6e 39 2b a7
         :     97 41 17 20 f9 24 f4 90 a5 ac 54 95 f2 13 56 d5
         :     50 b7 82 a6 4c 16 88 b6 b6 55 bc c7 84 21 97 a4
         :     34 c2 f6 56 3b 5b 7f 09 a7 8b cc 48 82 32 78 35
         :     61 d1 6f 4c ba b6 75 54 00 05 07 81 57 0c 66 60
         :     4b 81 7a d1 25 22 94 73 6e 8b 01 86 1a 4b 5a 74
         :     51 9b 8b 6f e5 14 89 a5 07 23 92 e5 87 62 6c 71
         :     37 76 57 5d 33 80 6a 1c 8e 27 32 af 97 c2 68 0f
         :     51 66 63 31 c4 eb 8b bc 04 31 c4 f9 68 32 da f1
         :     b3 c4 55 28 fb a1 53 f6 c7 8b 1c 19 87 02 94 7c
         :     cd 33 77 27 a4 6f b5 3b a1 1d e5 cb 41 91 34 68
         :     59 51 6c b6 ad 72 40 0f 3c f2 09 b2 36 ae f3 5a
         :     58 0a c8 7e b3 e3 0f af d6 69 73 ca 8a 7d d2 67
         :     5a f4 1f 7a 17 b6 14 33 cd 1a f8 0f 77 08 86 9f
         :     66 54 88 49 79 80 b1 ac 10 a0 cd cb 63 6a 00 ed
         :     86 81 b3 5e 42 91 24 ca 80 35 07 25 b8 5f 83 a5
         :     ea c3 a4 a3 cc 16 00 90 3e 65 29 35 60 b9 b3 36
         :     e5 af 0d 52 9d ac 1a 04 81 19 30 2c b7 a9 bc c1
         :     10 b9 48 51 bf 02 11 7f 19 9d c4 85 a8 52 b7 47
         :     3f 09 b8 31 a6 83 1d 5b 54 c0 b7 90 d2 25 cf 6b
         :     b9 2d 94 62 a2 6c db 33 dd a5 12 3c 7a af 0e 26
         :     a0 b8 36 55 ee a2 8b f3 a8 07 47 25 01 8f d6 ba
         :     e4 b6 01 cf 61 ba ab 71 a7 a3 d3 51 97 a3 43 e7
         :     4b 4a 27 2c 12 5d 54 08 96 42 6d 85 b7 95 8d 3b
         :     38 a6 ba 98 7e c3 72 25 c7 b4 4c db 12 dd e4 53
         :     9b 4a b0 82 36 36 83 f0 4b f7 a0 9c c5 c4 1d fe
         :     83 0a 1b 16 2e 0b 32 43 34 36 2f 08 4a 14 46 77
         :     23 34 4b ad d0 00 f8 d8 c5 37 c4 8f 99 8f 05 30
         :     7c eb d1 ed e0 b8 1c 3b c5 9a 06 5a 1b 6d 63 b2
         :     6c
         :   }

   The following is the ML-KEM-768 public key corresponding to the
   private key in the previous section.

   -----BEGIN PUBLIC KEY-----
   MIIEsjALBglghkgBZQMEBAIDggShACmKoQ1CPI3aBp0CvFnmzfA6CWuLPaTKubgM
   pKFJB2cszvHsT68jSgvFt+nUc/KzEzs7JqHRdctnp4BZGWmcAvdlMbmcX4kYBwS7
   TKRTXFuJcmecZgoHxeUUuHAJyGLrj1FXaV77P8QKne9rgcHMAqJJrk8JStDZvTSF
   wcHGgIBSCnyMYyAyzuc4FU5cUXbAfaVgJHdqQw/nbqz2ZaP3uDIQIhW8gvEJOcg1
   VwQzao+sHYHkuwSFql18dNa1m75cXpcqDYusQRtVtdVVfNaAoaj3G064a8SMmgUJ
   cxpUvZ1ykLJ5Y+Q3Lcmxmc/crAsBrNKKYjlREuTENkjWIsSMgjTQFEDozDdskn8j
   pa/JrAR0xmInTkJFJchVLs47P+JlFt6QG8fVFb3olVjmJslcgLkzQvgBAATznmxs
   lIccXjRMqzlmyDX5qWpZr9McQChrOLHBp4RwurlHUYk0RTzoZzapGfH1ptUQqG9U
   VPw5gMtcdlvSvV97NrFBDWY1yM60fE3aDXaijqyTnHHDAkgEhmxxYmZYRCFjwsIh
   F+UKzvzmN4qYVlIwKk7wws4Mxxa3eW4ray43d9+hrD2iWaMbWptTD4y2OKgaYqww
   GEmrr5WnMBvaMAaJCb/bfmfbzLs4pVUaJbGjoPaFdIrVdT2IgPABbGJ0hhZjhMVX
   H+I2WQA2TQODEeLYdds2ZoaTK17GAkMKNp6Hpu9cM4eGZXglvUwFes65I+sJNeaQ
   XmO0ztf4CFenc91ksVDSZhLqmsEgUtsgF78YQ8y0sygbaQ3HKK36hcACgbjjwJKH
   M1+Fa0/CiS9povV5Ia2gGRTECYhmLVd2lmKnhjUbm2ZJPat5WU2YbeIQDWW6D/Tq
   WLgVONJKRDWiWPrCVASqf0H2WLE4UGXhWNy2ARVzJyD0BFmqrBXkBpU6kKxSmX0c
   zQcAYO/GXbnmUzVEZ/rVbscTyG51QMQjrPJmn1L6b0rGiI2HHvPoR8ApqKr7uS4X
   skqgebH0GbphdbRCr7EZCdSla3CgM1soc5IYqnyTSOLDwvPrPRWkHmQXwN2Uv+sh
   QZsxGnuxOhgLvoMyGKmmsXRHzIXyJYWVh6cwdwSay8/UTQ8CVDjhXRU4Jw1Ybhv4
   MZKpRZz2PA6XL4UpdnmDHs8SFQmFHLg0D28Qew+hoO/Rs2qBibwIXE9ct4TlU/Qb
   kY+AOXzhlW94W+43fKmqi+aZitowwmt8PYxrVSVMyWIDsgxCruCsTh67QI5JqeP4
   edCrB4XrcCVCXRMFoimcAV4SDRY7DhlJTOVyU9AkbRgnRcuBl6t0OLPBu3lyvsWj
   BuujVnhVwBRpn+9lrlTHcKDYXBhADPZCrtxmB3e6SxOFAr1aeBL2IfhKSClrmN1D
   IrbxWCi4qPDgCoukSlPDqLFDVxsHQKvVZ9rxzenHnCBLbV4lnRdmoxu7y05qBc9F
   AhdrMBwcL0Ekd1AVe87IXoCbMKTWDXdHzdD1uZqoyCaYdRd5OqqAgKCxJKhVjfcr
   vje3X07btr6CFtbGM/srIoDiURPYaV5DSBw+6zl+sZJQUim2eiAeqJPD4ssy2ovD
   QvpN6gV4
   -----END PUBLIC KEY-----

   0 1202: SEQUENCE {
   4   11:   SEQUENCE {
   6    9:     OBJECT IDENTIFIER '2.16.840.1.101.3.4.4.2'
         :     }
   17 801:   BIT STRING
         :     00 29 8a a1 0d 42 3c 8d da 06 9d 02 bc 59 e6 cd
         :     f0 3a 09 6b 8b 3d a4 ca b9 b8 0c a4 a1 49 07 67
         :     2c ce f1 ec 4f af 23 4a 0b c5 b7 e9 d4 73 f2 b3
         :     13 3b 3b 26 a1 d1 75 cb 67 a7 80 59 19 69 9c 02
         :     f7 65 31 b9 9c 5f 89 18 07 04 bb 4c a4 53 5c 5b
         :     89 72 67 9c 66 0a 07 c5 e5 14 b8 70 09 c8 62 eb
         :     8f 51 57 69 5e fb 3f c4 0a 9d ef 6b 81 c1 cc 02
         :     a2 49 ae 4f 09 4a d0 d9 bd 34 85 c1 c1 c6 80 80
         :     52 0a 7c 8c 63 20 32 ce e7 38 15 4e 5c 51 76 c0
         :     7d a5 60 24 77 6a 43 0f e7 6e ac f6 65 a3 f7 b8
         :     32 10 22 15 bc 82 f1 09 39 c8 35 57 04 33 6a 8f
         :     ac 1d 81 e4 bb 04 85 aa 5d 7c 74 d6 b5 9b be 5c
         :     5e 97 2a 0d 8b ac 41 1b 55 b5 d5 55 7c d6 80 a1
         :     a8 f7 1b 4e b8 6b c4 8c 9a 05 09 73 1a 54 bd 9d
         :     72 90 b2 79 63 e4 37 2d c9 b1 99 cf dc ac 0b 01
         :     ac d2 8a 62 39 51 12 e4 c4 36 48 d6 22 c4 8c 82
         :     34 d0 14 40 e8 cc 37 6c 92 7f 23 a5 af c9 ac 04
         :     74 c6 62 27 4e 42 45 25 c8 55 2e ce 3b 3f e2 65
         :     16 de 90 1b c7 d5 15 bd e8 95 58 e6 26 c9 5c 80
         :     b9 33 42 f8 01 00 04 f3 9e 6c 6c 94 87 1c 5e 34
         :     4c ab 39 66 c8 35 f9 a9 6a 59 af d3 1c 40 28 6b
         :     38 b1 c1 a7 84 70 ba b9 47 51 89 34 45 3c e8 67
         :     36 a9 19 f1 f5 a6 d5 10 a8 6f 54 54 fc 39 80 cb
         :     5c 76 5b d2 bd 5f 7b 36 b1 41 0d 66 35 c8 ce b4
         :     7c 4d da 0d 76 a2 8e ac 93 9c 71 c3 02 48 04 86
         :     6c 71 62 66 58 44 21 63 c2 c2 21 17 e5 0a ce fc
         :     e6 37 8a 98 56 52 30 2a 4e f0 c2 ce 0c c7 16 b7
         :     79 6e 2b 6b 2e 37 77 df a1 ac 3d a2 59 a3 1b 5a
         :     9b 53 0f 8c b6 38 a8 1a 62 ac 30 18 49 ab af 95
         :     a7 30 1b da 30 06 89 09 bf db 7e 67 db cc bb 38
         :     a5 55 1a 25 b1 a3 a0 f6 85 74 8a d5 75 3d 88 80
         :     f0 01 6c 62 74 86 16 63 84 c5 57 1f e2 36 59 00
         :     36 4d 03 83 11 e2 d8 75 db 36 66 86 93 2b 5e c6
         :     02 43 0a 36 9e 87 a6 ef 5c 33 87 86 65 78 25 bd
         :     4c 05 7a ce b9 23 eb 09 35 e6 90 5e 63 b4 ce d7
         :     f8 08 57 a7 73 dd 64 b1 50 d2 66 12 ea 9a c1 20
         :     52 db 20 17 bf 18 43 cc b4 b3 28 1b 69 0d c7 28
         :     ad fa 85 c0 02 81 b8 e3 c0 92 87 33 5f 85 6b 4f
         :     c2 89 2f 69 a2 f5 79 21 ad a0 19 14 c4 09 88 66
         :     2d 57 76 96 62 a7 86 35 1b 9b 66 49 3d ab 79 59
         :     4d 98 6d e2 10 0d 65 ba 0f f4 ea 58 b8 15 38 d2
         :     4a 44 35 a2 58 fa c2 54 04 aa 7f 41 f6 58 b1 38
         :     50 65 e1 58 dc b6 01 15 73 27 20 f4 04 59 aa ac
         :     15 e4 06 95 3a 90 ac 52 99 7d 1c cd 07 00 60 ef
         :     c6 5d b9 e6 53 35 44 67 fa d5 6e c7 13 c8 6e 75
         :     40 c4 23 ac f2 66 9f 52 fa 6f 4a c6 88 8d 87 1e
         :     f3 e8 47 c0 29 a8 aa fb b9 2e 17 b2 4a a0 79 b1
         :     f4 19 ba 61 75 b4 42 af b1 19 09 d4 a5 6b 70 a0
         :     33 5b 28 73 92 18 aa 7c 93 48 e2 c3 c2 f3 eb 3d
         :     15 a4 1e 64 17 c0 dd 94 bf eb 21 41 9b 31 1a 7b
         :     b1 3a 18 0b be 83 32 18 a9 a6 b1 74 47 cc 85 f2
         :     25 85 95 87 a7 30 77 04 9a cb cf d4 4d 0f 02 54
         :     38 e1 5d 15 38 27 0d 58 6e 1b f8 31 92 a9 45 9c
         :     f6 3c 0e 97 2f 85 29 76 79 83 1e cf 12 15 09 85
         :     1c b8 34 0f 6f 10 7b 0f a1 a0 ef d1 b3 6a 81 89
         :     bc 08 5c 4f 5c b7 84 e5 53 f4 1b 91 8f 80 39 7c
         :     e1 95 6f 78 5b ee 37 7c a9 aa 8b e6 99 8a da 30
         :     c2 6b 7c 3d 8c 6b 55 25 4c c9 62 03 b2 0c 42 ae
         :     e0 ac 4e 1e bb 40 8e 49 a9 e3 f8 79 d0 ab 07 85
         :     eb 70 25 42 5d 13 05 a2 29 9c 01 5e 12 0d 16 3b
         :     0e 19 49 4c e5 72 53 d0 24 6d 18 27 45 cb 81 97
         :     ab 74 38 b3 c1 bb 79 72 be c5 a3 06 eb a3 56 78
         :     55 c0 14 69 9f ef 65 ae 54 c7 70 a0 d8 5c 18 40
         :     0c f6 42 ae dc 66 07 77 ba 4b 13 85 02 bd 5a 78
         :     12 f6 21 f8 4a 48 29 6b 98 dd 43 22 b6 f1 58 28
         :     b8 a8 f0 e0 0a 8b a4 4a 53 c3 a8 b1 43 57 1b 07
         :     40 ab d5 67 da f1 cd e9 c7 9c 20 4b 6d 5e 25 9d
         :     17 66 a3 1b bb cb 4e 6a 05 cf 45 02 17 6b 30 1c
         :     1c 2f 41 24 77 50 15 7b ce c8 5e 80 9b 30 a4 d6
         :     0d 77 47 cd d0 f5 b9 9a a8 c8 26 98 75 17 79 3a
         :     aa 80 80 a0 b1 24 a8 55 8d f7 2b be 37 b7 5f 4e
         :     db b6 be 82 16 d6 c6 33 fb 2b 22 80 e2 51 13 d8
         :     69 5e 43 48 1c 3e eb 39 7e b1 92 50 52 29 b6 7a
         :     20 1e a8 93 c3 e2 cb 32 da 8b c3 42 fa 4d ea 05
         :     78
         :   }

   The following is the ML-KEM-1024 public key corresponding to the
   private key in the previous section.

   -----BEGIN PUBLIC KEY-----
   MIIGMjALBglghkgBZQMEBAMDggYhAEuUwpRQERGRgjs1FMmsHqPZglzLhjk6LfsE
   ZU+iGS03v60cSXxlAu7lyoCnO/zguvWlSohYWkATl6PSMvQmp6+wgrwhpEMXCQ6q
   x1ksLqiKZTxEkeoZOTEzX1LpiaPEzFbZxVNzLVfEcPtBq3WbZdLQREU4L82cTjRK
   ESj6nhHgQ1jhku0BSyMjKn7isi4jcX9EER7jNXU5nDdkbamBPsmyEq/pTl3FwjMK
   cpTMH0I0ptP7tPFoWriJLASssXzRwXDXsGEbanF2x5TMjGf1X8kjwq0gMQDzZZkY
   gsMCQ9d4E4Q7XsfJZAMiY3BgkuzwDHUWvmTkWYykImwGm7XmfkF1zyKGyN1cSIps
   WGHzG6oL0CaUcOi1Ud07zTjIbBL5zbF2x33ItsAqcB9HiQLIVT9pTA2CcntMSlws
   EEEhKqEnSAi4IRGzd+x1IU6bGXj3YATUE52YYT9LjpjSCve1NAc6UJqVm3p1ZPm0
   DKIYv2GCkyCoUCAXlU0yjXrGx2nsKXAHVuewaFs0DV4RgFlQSkmppQoQGY6xCleE
   Z460J9e0uruVUpM7BiiXlz4TGOrwoOrDdYSmVAGxcD4EKszYN1MUg/JBytzRwdN4
   EZ5pRCnbGZrIkeTFNDdXCFuzrng2ZzUMRFjZdnLoYegLHSZ5UQ6jpvI2DHekaULH
   oGpVTSKAgMhLR67xTbF2IMsWwGqzChvkzacIK+n4fpwhHEaRY0mluo6qUgHHKUo8
   CIW1O2V0UhCIJexkbJCgRhIyTufQMa/lNDEyy+9ntu+xpewoCbdzU4znez2LBOsL
   PCJWAR5McWwZqLoHUr9xSSEXZJ8GFcMpD8KaRv3kvVLbkobWAziCRCWcFaesK2QK
   YMwDN2pYQaP7ikc1aPqbGiZyFfNMAWl7Dw5icXXXIQW3cHwpueYUvcM6b2yBipU3
   C0J4gte0dnlqnsbrmTJ0zZsjkagrpF4zk9Lprpchyp1sG5iLWCdxP5CmWF3pQzUo
   wCsDzhC7X3IBOND7tMMMEma5GOUpJd/hezf5XSK8pU9HWRmshZCYwPDQisWHXvKb
   Vv0UHm7xX3AKC2bzlZXFiBdzc8RmmyG8Bx5MOqXwtKMbYljzXaJKw80px/IJJBDF
   B4NVsTj7U6a5rm4LnAgkPnuqRcRzduuMfxPUz1Gqc2+jFUDJJB83DaVEv5+cKNml
   fi8qfKlaTktGbmQas7zHat8ROdVnpvErUvOmXn7AquJryqjFWDOwTlmZjryaGTD7
   ttIjPFPSwfi5UY48Lec6Gd7ms4Clsylxz2ThKf1sH6bnXUojRQHpZt06VAr1yPTz
   SmtKJT7ihJJWbV5nxvVYVfywUG+wbBVnRNmgOjGib6lMrRTxV7fzA9B6acdzdo/L
   TQecCQWXA6DDqU3kuZ6jovFlg9D5Fwo5UNsHtPC8MIApJ/n3lhtiWYkmNqlQKicF
   MDY3eZ3TRNpFHBz3v2eEDOsweauMa4wZJ/ZAU8YSRQxFyeYDvBZmbllrNHHhA7bx
   VEdCTRcCIEgRH/vTfhxnD2TxS4p7MrlMGkm0XdL8OM1SidkQrWNgLPXhMELGSsZ5
   e4n7VRrQjgWpLSAMzLfnEu8jyTEss1DwKatTfihzR/0wdawQkGp4PxxsB8y4j0Ei
   jEvhxkD3kLXDpdXTynkklddLxGFWJljAesYAJ2uSSrW8m+HwSUy3b4L0YKdICXJm
   M4HhaZlgYdeZhZ7FTU9cpcQRwB2xWXsWWXdmneE6koo0r7rCWP6oxHZCOclCHcMR
   m/W0dpkgaXgyexxTRe90anmDhB8FbiU0EAqyTU6au9CxfGqVvUw8DkD2nhYSrO6y
   i5kIbJURbnIEJziTOQv0a4mbNihrDr8ZR7uYhPcyyifagrGbXcDMf4iFcUkQiIsj
   EMT5MZ1BCzTmQzuQA+IXa7mVJXRWEG6JUhY7i6WSUwzFqgrrQ605j+npe6pSPXpE
   MWd8PTrwcZ5HXbhcqVr1CJvqvrBbL6q0iWumD4HIhHKle0aoKIJqDN+0RvgYkYLS
   v16sTsHMXer1mcihPkgjVAbRf/3cg0S2xmmEqGiqkvoCInoIaVDrDIcB7VjcYod2
   uYOILhF1
   -----END PUBLIC KEY-----

   0  1586: SEQUENCE {
   4    11:   SEQUENCE {
   6     9:     OBJECT IDENTIFIER '2.16.840.1.101.3.4.4.3'
          :     }
   17 1569:   BIT STRING
          :     00 4b 94 c2 94 50 11 11 91 82 3b 35 14 c9 ac 1e
          :     a3 d9 82 5c cb 86 39 3a 2d fb 04 65 4f a2 19 2d
          :     37 bf ad 1c 49 7c 65 02 ee e5 ca 80 a7 3b fc e0
          :     ba f5 a5 4a 88 58 5a 40 13 97 a3 d2 32 f4 26 a7
          :     af b0 82 bc 21 a4 43 17 09 0e aa c7 59 2c 2e a8
          :     8a 65 3c 44 91 ea 19 39 31 33 5f 52 e9 89 a3 c4
          :     cc 56 d9 c5 53 73 2d 57 c4 70 fb 41 ab 75 9b 65
          :     d2 d0 44 45 38 2f cd 9c 4e 34 4a 11 28 fa 9e 11
          :     e0 43 58 e1 92 ed 01 4b 23 23 2a 7e e2 b2 2e 23
          :     71 7f 44 11 1e e3 35 75 39 9c 37 64 6d a9 81 3e
          :     c9 b2 12 af e9 4e 5d c5 c2 33 0a 72 94 cc 1f 42
          :     34 a6 d3 fb b4 f1 68 5a b8 89 2c 04 ac b1 7c d1
          :     c1 70 d7 b0 61 1b 6a 71 76 c7 94 cc 8c 67 f5 5f
          :     c9 23 c2 ad 20 31 00 f3 65 99 18 82 c3 02 43 d7
          :     78 13 84 3b 5e c7 c9 64 03 22 63 70 60 92 ec f0
          :     0c 75 16 be 64 e4 59 8c a4 22 6c 06 9b b5 e6 7e
          :     41 75 cf 22 86 c8 dd 5c 48 8a 6c 58 61 f3 1b aa
          :     0b d0 26 94 70 e8 b5 51 dd 3b cd 38 c8 6c 12 f9
          :     cd b1 76 c7 7d c8 b6 c0 2a 70 1f 47 89 02 c8 55
          :     3f 69 4c 0d 82 72 7b 4c 4a 5c 2c 10 41 21 2a a1
          :     27 48 08 b8 21 11 b3 77 ec 75 21 4e 9b 19 78 f7
          :     60 04 d4 13 9d 98 61 3f 4b 8e 98 d2 0a f7 b5 34
          :     07 3a 50 9a 95 9b 7a 75 64 f9 b4 0c a2 18 bf 61
          :     82 93 20 a8 50 20 17 95 4d 32 8d 7a c6 c7 69 ec
          :     29 70 07 56 e7 b0 68 5b 34 0d 5e 11 80 59 50 4a
          :     49 a9 a5 0a 10 19 8e b1 0a 57 84 67 8e b4 27 d7
          :     b4 ba bb 95 52 93 3b 06 28 97 97 3e 13 18 ea f0
          :     a0 ea c3 75 84 a6 54 01 b1 70 3e 04 2a cc d8 37
          :     53 14 83 f2 41 ca dc d1 c1 d3 78 11 9e 69 44 29
          :     db 19 9a c8 91 e4 c5 34 37 57 08 5b b3 ae 78 36
          :     67 35 0c 44 58 d9 76 72 e8 61 e8 0b 1d 26 79 51
          :     0e a3 a6 f2 36 0c 77 a4 69 42 c7 a0 6a 55 4d 22
          :     80 80 c8 4b 47 ae f1 4d b1 76 20 cb 16 c0 6a b3
          :     0a 1b e4 cd a7 08 2b e9 f8 7e 9c 21 1c 46 91 63
          :     49 a5 ba 8e aa 52 01 c7 29 4a 3c 08 85 b5 3b 65
          :     74 52 10 88 25 ec 64 6c 90 a0 46 12 32 4e e7 d0
          :     31 af e5 34 31 32 cb ef 67 b6 ef b1 a5 ec 28 09
          :     b7 73 53 8c e7 7b 3d 8b 04 eb 0b 3c 22 56 01 1e
          :     4c 71 6c 19 a8 ba 07 52 bf 71 49 21 17 64 9f 06
          :     15 c3 29 0f c2 9a 46 fd e4 bd 52 db 92 86 d6 03
          :     38 82 44 25 9c 15 a7 ac 2b 64 0a 60 cc 03 37 6a
          :     58 41 a3 fb 8a 47 35 68 fa 9b 1a 26 72 15 f3 4c
          :     01 69 7b 0f 0e 62 71 75 d7 21 05 b7 70 7c 29 b9
          :     e6 14 bd c3 3a 6f 6c 81 8a 95 37 0b 42 78 82 d7
          :     b4 76 79 6a 9e c6 eb 99 32 74 cd 9b 23 91 a8 2b
          :     a4 5e 33 93 d2 e9 ae 97 21 ca 9d 6c 1b 98 8b 58
          :     27 71 3f 90 a6 58 5d e9 43 35 28 c0 2b 03 ce 10
          :     bb 5f 72 01 38 d0 fb b4 c3 0c 12 66 b9 18 e5 29
          :     25 df e1 7b 37 f9 5d 22 bc a5 4f 47 59 19 ac 85
          :     90 98 c0 f0 d0 8a c5 87 5e f2 9b 56 fd 14 1e 6e
          :     f1 5f 70 0a 0b 66 f3 95 95 c5 88 17 73 73 c4 66
          :     9b 21 bc 07 1e 4c 3a a5 f0 b4 a3 1b 62 58 f3 5d
          :     a2 4a c3 cd 29 c7 f2 09 24 10 c5 07 83 55 b1 38
          :     fb 53 a6 b9 ae 6e 0b 9c 08 24 3e 7b aa 45 c4 73
          :     76 eb 8c 7f 13 d4 cf 51 aa 73 6f a3 15 40 c9 24
          :     1f 37 0d a5 44 bf 9f 9c 28 d9 a5 7e 2f 2a 7c a9
          :     5a 4e 4b 46 6e 64 1a b3 bc c7 6a df 11 39 d5 67
          :     a6 f1 2b 52 f3 a6 5e 7e c0 aa e2 6b ca a8 c5 58
          :     33 b0 4e 59 99 8e bc 9a 19 30 fb b6 d2 23 3c 53
          :     d2 c1 f8 b9 51 8e 3c 2d e7 3a 19 de e6 b3 80 a5
          :     b3 29 71 cf 64 e1 29 fd 6c 1f a6 e7 5d 4a 23 45
          :     01 e9 66 dd 3a 54 0a f5 c8 f4 f3 4a 6b 4a 25 3e
          :     e2 84 92 56 6d 5e 67 c6 f5 58 55 fc b0 50 6f b0
          :     6c 15 67 44 d9 a0 3a 31 a2 6f a9 4c ad 14 f1 57
          :     b7 f3 03 d0 7a 69 c7 73 76 8f cb 4d 07 9c 09 05
          :     97 03 a0 c3 a9 4d e4 b9 9e a3 a2 f1 65 83 d0 f9
          :     17 0a 39 50 db 07 b4 f0 bc 30 80 29 27 f9 f7 96
          :     1b 62 59 89 26 36 a9 50 2a 27 05 30 36 37 79 9d
          :     d3 44 da 45 1c 1c f7 bf 67 84 0c eb 30 79 ab 8c
          :     6b 8c 19 27 f6 40 53 c6 12 45 0c 45 c9 e6 03 bc
          :     16 66 6e 59 6b 34 71 e1 03 b6 f1 54 47 42 4d 17
          :     02 20 48 11 1f fb d3 7e 1c 67 0f 64 f1 4b 8a 7b
          :     32 b9 4c 1a 49 b4 5d d2 fc 38 cd 52 89 d9 10 ad
          :     63 60 2c f5 e1 30 42 c6 4a c6 79 7b 89 fb 55 1a
          :     d0 8e 05 a9 2d 20 0c cc b7 e7 12 ef 23 c9 31 2c
          :     b3 50 f0 29 ab 53 7e 28 73 47 fd 30 75 ac 10 90
          :     6a 78 3f 1c 6c 07 cc b8 8f 41 22 8c 4b e1 c6 40
          :     f7 90 b5 c3 a5 d5 d3 ca 79 24 95 d7 4b c4 61 56
          :     26 58 c0 7a c6 00 27 6b 92 4a b5 bc 9b e1 f0 49
          :     4c b7 6f 82 f4 60 a7 48 09 72 66 33 81 e1 69 99
          :     60 61 d7 99 85 9e c5 4d 4f 5c a5 c4 11 c0 1d b1
          :     59 7b 16 59 77 66 9d e1 3a 92 8a 34 af ba c2 58
          :     fe a8 c4 76 42 39 c9 42 1d c3 11 9b f5 b4 76 99
          :     20 69 78 32 7b 1c 53 45 ef 74 6a 79 83 84 1f 05
          :     6e 25 34 10 0a b2 4d 4e 9a bb d0 b1 7c 6a 95 bd
          :     4c 3c 0e 40 f6 9e 16 12 ac ee b2 8b 99 08 6c 95
          :     11 6e 72 04 27 38 93 39 0b f4 6b 89 9b 36 28 6b
          :     0e bf 19 47 bb 98 84 f7 32 ca 27 da 82 b1 9b 5d
          :     c0 cc 7f 88 85 71 49 10 88 8b 23 10 c4 f9 31 9d
          :     41 0b 34 e6 43 3b 90 03 e2 17 6b b9 95 25 74 56
          :     10 6e 89 52 16 3b 8b a5 92 53 0c c5 aa 0a eb 43
          :     ad 39 8f e9 e9 7b aa 52 3d 7a 44 31 67 7c 3d 3a
          :     f0 71 9e 47 5d b8 5c a9 5a f5 08 9b ea be b0 5b
          :     2f aa b4 89 6b a6 0f 81 c8 84 72 a5 7b 46 a8 28
          :     82 6a 0c df b4 46 f8 18 91 82 d2 bf 5e ac 4e c1
          :     cc 5d ea f5 99 c8 a1 3e 48 23 54 06 d1 7f fd dc
          :     83 44 b6 c6 69 84 a8 68 aa 92 fa 02 22 7a 08 69
          :     50 eb 0c 87 01 ed 58 dc 62 87 76 b9 83 88 2e 11
          :     75
          :   }

   The following example, in addition to encoding the ML-KEM-768 private
   key, has an attribute included as well as the public key:

     -----BEGIN PRIVATE KEY-----
     TODO insert example private key with attribute
     -----END PRIVATE KEY-------

C.3.  Example Certificate

     TODO insert ASN.1 Pretty Print

     -----BEGIN CERTIFICATE-----
     TODO Certificate
     -----END CERTIFICATE-------

Acknowledgments

   TODO acknowledge.

Authors' Addresses

   Sean Turner
   sn3rd
   Email: sean@sn3rd.com


   Panos Kampanakis
   AWS
   Email: kpanos@amazon.com


   Jake Massimo
   AWS
   Email: jakemas@amazon.com


   Bas Westerbaan
   Cloudflare
   Email: bas@westerbaan.name