Network Working Group C. Celi, Ed. Internet-Draft 30 April 2024 Intended status: Informational Expires: 1 November 2024 ACVP ML-KEM JSON Specification draft-celi-acvp-ml-kem-01 Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on 1 November 2024. Copyright Notice Copyright (c) 2024 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Table of Contents 1. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 2 2. Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 4. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3 4.1. Notation conventions . . . . . . . . . . . . . . . . . . 3 4.2. Terms and Definitions . . . . . . . . . . . . . . . . . . 3 4.2.1. Prompt . . . . . . . . . . . . . . . . . . . . . . . 3 4.2.2. Registration . . . . . . . . . . . . . . . . . . . . 3 4.2.3. Response . . . . . . . . . . . . . . . . . . . . . . 3 Celi Expires 1 November 2024 [Page 1] Internet-Draft ACVP ML-KEM April 2024 4.2.4. Test Case . . . . . . . . . . . . . . . . . . . . . . 3 4.2.5. Test Group . . . . . . . . . . . . . . . . . . . . . 4 4.2.6. Test Vector Set . . . . . . . . . . . . . . . . . . . 4 4.2.7. Validation . . . . . . . . . . . . . . . . . . . . . 4 5. Supported ML-KEM Algorithms . . . . . . . . . . . . . . . . . 4 6. Test Types and Test Coverage . . . . . . . . . . . . . . . . 4 6.1. Test Types . . . . . . . . . . . . . . . . . . . . . . . 4 6.2. Test Coverage . . . . . . . . . . . . . . . . . . . . . . 5 6.2.1. Requirements Covered . . . . . . . . . . . . . . . . 5 6.2.2. Requirements Not Covered . . . . . . . . . . . . . . 5 7. Capabilities Registration . . . . . . . . . . . . . . . . . . 5 7.1. Prerequisites . . . . . . . . . . . . . . . . . . . . . . 5 7.2. Required Prerequisite Algorithms for ML-KEM Validations . . . . . . . . . . . . . . . . . . . . . . . 6 7.3. ML-KEM Algorithm Registration Properties . . . . . . . . 7 7.3.1. ML-KEM keyGen Mode Capabilities Example . . . . . . . 8 7.3.2. ML-KEM encapDecap Mode Capabilities Example . . . . . 9 8. Test Vectors . . . . . . . . . . . . . . . . . . . . . . . . 9 8.1. ML-KEM keyGen Test Vectors . . . . . . . . . . . . . . . 10 8.1.1. ML-KEM keyGen Test Groups JSON Schema . . . . . . . . 10 8.1.2. ML-KEM keyGen Test Case JSON Schema . . . . . . . . . 11 8.2. ML-KEM encapDecap Test Vectors . . . . . . . . . . . . . 12 8.2.1. ML-KEM encapDecap Test Groups JSON Schema . . . . . . 12 8.2.2. ML-KEM encapDecap Test Groups JSON Schema . . . . . . 13 9. Test Vector Responses . . . . . . . . . . . . . . . . . . . . 14 9.1. ML-KEM keyGen Test Vector Responses . . . . . . . . . . . 16 9.2. ML-KEM encapDecap Test Vector Responses . . . . . . . . . 16 10. Security Considerations . . . . . . . . . . . . . . . . . . . 18 11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18 12. Normative References . . . . . . . . . . . . . . . . . . . . 18 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 19 1. Acknowledgements There are no acknowledgements. 2. Abstract This document defines the JSON schema for testing Module Lattice- based Key Encapsulation Mechanism (ML-KEM) implementations with the ACVP specification. Celi Expires 1 November 2024 [Page 2] Internet-Draft ACVP ML-KEM April 2024 3. Introduction The Automated Crypto Validation Protocol (ACVP) defines a mechanism to automatically verify the cryptographic implementation of a software or hardware crypto module. The ACVP specification defines how a crypto module communicates with an ACVP server, including crypto capabilities negotiation, session management, authentication, vector processing and more. The ACVP specification does not define algorithm specific JSON constructs for performing the crypto validation. A series of ACVP sub-specifications define the constructs for testing individual crypto algorithms. Each sub- specification addresses a specific class of crypto algorithms. This sub-specification defines the JSON constructs for testing Module Lattice-based Key Encapsulation Mechanism (ML-KEM) implementations using ACVP. 4. Conventions 4.1. Notation conventions 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 of [RFC2119] and [RFC8174] when, and only when, they appear in all capitals, as shown here. 4.2. Terms and Definitions 4.2.1. Prompt JSON sent from the server to the client describing the tests the client performs 4.2.2. Registration The initial request from the client to the server describing the capabilities of one or several algorithm, mode and revision combinations 4.2.3. Response JSON sent from the client to the server in response to the prompt 4.2.4. Test Case An individual unit of work within a prompt or response Celi Expires 1 November 2024 [Page 3] Internet-Draft ACVP ML-KEM April 2024 4.2.5. Test Group A collection of test cases that share similar properties within a prompt or response 4.2.6. Test Vector Set A collection of test groups under a specific algorithm, mode, and revision 4.2.7. Validation JSON sent from the server to the client that specifies the correctness of the response 5. Supported ML-KEM Algorithms The following ML-KEM algorithms MAY be advertised by the ACVP compliant cryptographic module. The list is in the form "algorithm / mode / revision". * ML-KEM / keyGen / FIPS203 * ML-KEM / encapDecap / FIPS203 6. Test Types and Test Coverage 6.1. Test Types The ACVP server performs a set of tests on the specified ML-KEM algorithm in order to assess the correctness and robustness of the implementation. A typical ACVP validation session SHALL require multiple tests to be performed for every supported permutation of ML- KEM capabilities. This section describes the design of the tests used to validate implementations of the ML-KEM algorithms. * ML-KEM / keyGen / * "AFT" - Algorithm Functional Test. The IUT is REQUIRED for each test case provided, to generate a key pair from a provided seed. The key pair is communicated to the ACVP server and validated. * ML-KEM / encapDecap / * "AFT" - Algorithm Functional Test. The server will generate a random m and encapsulation key ek. The IUT SHALL generate the corresponding shared secret k and ciphertext c. * ML-KEM /encapDecap / * "VAL" - Validation Test. The server will generate a decapsulation key dk and a potentially valid or invalid ciphertext c. The IUT SHALL generate the corresponding shared Celi Expires 1 November 2024 [Page 4] Internet-Draft ACVP ML-KEM April 2024 secret k whether the k is provided from the valid decapsulation route or from the implicit rejection present in [FIPS203] Algorithm 17. 6.2. Test Coverage The tests described in this document have the intention of ensuring an implementation is conformant to [FIPS203]. 6.2.1. Requirements Covered * The tests will ensure conformity and correctness of an implementation of the algorithms supported. 6.2.2. Requirements Not Covered * FIPS 203 Section 3.3. Requirements for ML-KEM Implementations. Requirements outlined in this section are not testable by an ACVP server. An ACVP server will not test the zeroization of intermediate values, security strength of the deterministic random bit generators (DRBGs), or incorrect length signatures or public keys. 7. Capabilities Registration ACVP requires crypto modules to register their capabilities. This allows the crypto module to advertise support for specific algorithms, notifying the ACVP server which algorithms need test vectors generated for the validation process. This section describes the constructs for advertising support of ML-KEM algorithms to the ACVP server. The algorithm capabilities MUST be advertised as JSON objects within the 'algorithms' value of the ACVP registration message. The 'algorithms' value is an array, where each array element is an individual JSON object defined in this section. The 'algorithms' value is part of the 'capability_exchange' element of the ACVP JSON registration message. See the ACVP specification [ACVP] for more details on the registration message. 7.1. Prerequisites Each algorithm implementation MAY rely on other cryptographic primitives. For example, RSA Signature algorithms depend on an underlying hash function. Each of these underlying algorithm primitives must be validated, either separately or as part of the same submission. ACVP provides a mechanism for specifying the required prerequisites: Celi Expires 1 November 2024 [Page 5] Internet-Draft ACVP ML-KEM April 2024 Prerequisites, if applicable, MUST be submitted in the registration as the prereqVals JSON property array inside each element of the algorithms array. Each element in the prereqVals array MUST contain the following properties +===============+=============================+===========+ | JSON Property | Description | JSON Type | +===============+=============================+===========+ | algorithm | a prerequisite algorithm | string | +---------------+-----------------------------+-----------+ | valValue | algorithm validation number | string | +---------------+-----------------------------+-----------+ Table 1: Prerequisite Properties A "valValue" of "same" SHALL be used to indicate that the prerequisite is being met by a different algorithm in the capability exchange in the same registration. An example description of prerequisites within a single algorithm capability exchange looks like this "prereqVals": [ { "algorithm": "Alg1", "valValue": "Val-1234" }, { "algorithm": "Alg2", "valValue": "same" } ] 7.2. Required Prerequisite Algorithms for ML-KEM Validations Each ML-KEM implementation relies on other cryptographic primitives. For example, ML-KEM keyGen uses an underlying SHA algorithm. Each of these underlying algorithm primitives must be validated, either separately or as part of the same submission. ACVP provides a mechanism for specifying the required prerequisites: Celi Expires 1 November 2024 [Page 6] Internet-Draft ACVP ML-KEM April 2024 +==============+================+=====================+===========+ | JSON Value | Description | JSON Type | Valid | | | | | Values | +==============+================+=====================+===========+ | algorithm | a prerequisite | string | SHA, or | | | algorithm | | DRBG | +--------------+----------------+---------------------+-----------+ | valValue | algorithm | string | Actual | | | validation | | number or | | | number | | "same" | +--------------+----------------+---------------------+-----------+ | prereqAlgVal | prerequisite | object with | See above | | | algorithm | algorithm and | | | | validation | valValue properties | | +--------------+----------------+---------------------+-----------+ Table 2: Required ML-KEM Prerequisite Algorithms JSON Values 7.3. ML-KEM Algorithm Registration Properties Each ML-KEM algorithm capability advertised is a self-contained JSON object using the following values. Celi Expires 1 November 2024 [Page 7] Internet-Draft ACVP ML-KEM April 2024 +===============+=================+==============+==================+ | JSON Value | Description | JSON Type | Valid Values | +===============+=================+==============+==================+ | algorithm | The ML-KEM | string | See Section 5 | | | algorithm to | | | | | be validated | | | +---------------+-----------------+--------------+------------------+ | mode | The ML-KEM | string | See Section 5 | | | mode to be | | | | | validated | | | +---------------+-----------------+--------------+------------------+ | revision | The algorithm | string | See Section 5 | | | testing | | | | | revision to | | | | | use | | | +---------------+-----------------+--------------+------------------+ | prereqVals | Prerequisite | array of | See Section 7.2 | | | algorithm | prereqAlgVal | | | | validations | objects | | +---------------+-----------------+--------------+------------------+ | parameterSets | The ML-KEM | array of | "ML-KEM-512", | | | parameter | strings | "ML-KEM-768", | | | sets | | "ML-KEM-1024" | | | supported | | | +---------------+-----------------+--------------+------------------+ | functions | The ML-KEM | array of | "encapsulation", | | | encapsulation | strings | "decapsulation" | | | or | | | | | decapsulation | | | | | modes | | | | | supported | | | +---------------+-----------------+--------------+------------------+ Table 3: ML-KEM Algorithm Capabilities JSON Values Note: The functions property is only applicable to ML-KEM / encapDecap / FIPS203. 7.3.1. ML-KEM keyGen Mode Capabilities Example Below is an example of the registration for ML-KEM / keyGen / FIPS203 Celi Expires 1 November 2024 [Page 8] Internet-Draft ACVP ML-KEM April 2024 { "algorithm": "ML-KEM", "mode": "keyGen", "revision": "FIPS203", "prereqVals": [ { "algorithm": "SHA", "valValue": "123456" } ], "parameterSets": ["ML-KEM-512", "ML-KEM-768", "ML-KEM-1024"] } 7.3.2. ML-KEM encapDecap Mode Capabilities Example Below is an example of the registration for ML-KEM / encapDecap / FIPS203 { "algorithm": "ML-KEM", "mode": "encapDecap", "revision": "FIPS203", "prereqVals": [ { "algorithm": "SHA", "valValue": "123456" } ], "parameterSets": ["ML-KEM-512", "ML-KEM-768", "ML-KEM-1024"] "functions": ["encapsulation", "decapsulation"] } 8. Test Vectors The ACVP server provides test vectors to the ACVP client, which are then processed and returned to the ACVP server for validation. A typical ACVP validation test session would require multiple test vector sets to be downloaded and processed by the ACVP client. Each test vector set represents an individual algorithm defined during the capability exchange. This section describes the JSON schema for a test vector set used with Module Lattice-based Key Encapsulation Mechanism (ML-KEM) algorithms. The test vector set JSON schema is a multi-level hierarchy that contains meta data for the entire vector set as well as individual test vectors to be processed by the ACVP client. The following table describes the JSON elements at the top level of the hierarchy. Celi Expires 1 November 2024 [Page 9] Internet-Draft ACVP ML-KEM April 2024 +=============+======================================+===========+ | JSON Values | Description | JSON Type | +=============+======================================+===========+ | acvVersion | Protocol version identifier | string | +-------------+--------------------------------------+-----------+ | vsId | Unique numeric vector set identifier | integer | +-------------+--------------------------------------+-----------+ | algorithm | Algorithm defined in the capability | string | | | exchange | | +-------------+--------------------------------------+-----------+ | mode | Mode defined in the capability | string | | | exchange | | +-------------+--------------------------------------+-----------+ | revision | Protocol test revision selected | string | +-------------+--------------------------------------+-----------+ | testGroups | Array of test groups containing test | array | | | data, see Section 8, Paragraph 6 | | +-------------+--------------------------------------+-----------+ Table 4: Top Level Test Vector JSON Elements An example of this would look like this [ { "acvVersion": }, { "vsId": 1, "algorithm": "Alg1", "mode": "Mode1", "revision": "Revision1.0", "testGroups": [ ... ] } ] == 8.1. ML-KEM keyGen Test Vectors 8.1.1. ML-KEM keyGen Test Groups JSON Schema The testGroups element at the top level in the test vector JSON object is an array of test groups. Test vectors are grouped into similar test cases to reduce the amount of data transmitted in the vector set. For instance, all test vectors that use the same key size would be grouped together. The Test Group JSON object contains meta data that applies to all test vectors within the group. The Celi Expires 1 November 2024 [Page 10] Internet-Draft ACVP ML-KEM April 2024 following table describes the secure hash JSON elements of the Test Group JSON object. The test group for ML-KEM / keyGen / FIPS203 is as follows: +==============+==============================+========+ | JSON Value | Description | JSON | | | | type | +==============+==============================+========+ | testType | The test operation performed | string | +--------------+------------------------------+--------+ | parameterSet | The ML-KEM parameter set | string | | | used | | +--------------+------------------------------+--------+ | tests | Array of individual test | array | | | vector JSON objects, which | | | | are defined in Section 8.1.2 | | +--------------+------------------------------+--------+ Table 5: ML-KEM keyGen Test Group JSON Object 8.1.2. ML-KEM keyGen Test Case JSON Schema Each test group contains an array of one or more test cases. Each test case is a JSON object that represents a single test vector to be processed by the ACVP client. The following table describes the JSON elements for each ML-KEM test vector. +============+=======================================+===========+ | JSON Value | Description | JSON type | +============+=======================================+===========+ | tcId | Numeric identifier for the test case, | integer | | | unique across the entire vector set | | +------------+---------------------------------------+-----------+ | d | The seed d used to generate the key | hex | | | pair | | +------------+---------------------------------------+-----------+ | z | The seed z used to generate the key | hex | | | pair | | +------------+---------------------------------------+-----------+ Table 6: ML-KEM keyGen Test Case JSON Object The following is an example JSON object sent from the server to the client for ML-KEM / keyGen / FIPS203. Celi Expires 1 November 2024 [Page 11] Internet-Draft ACVP ML-KEM April 2024 [ { "acvVersion": }, { "vsId": 1564, "algorithm": "ML-KEM", "mode": "keyGen", "revision": "FIPS203", "testGroups": [ { "tgId": 1, "testType": "AFT", "parameterSet": "ML-KEM-512", "tests": [ { "tcId": 1, "d": "C105DC2...", "z": "AD310AB..." } ] } ] } ] 8.2. ML-KEM encapDecap Test Vectors 8.2.1. ML-KEM encapDecap Test Groups JSON Schema The testGroups element at the top level in the test vector JSON object is an array of test groups. Test vectors are grouped into similar test cases to reduce the amount of data transmitted in the vector set. For instance, all test vectors that use the same key size would be grouped together. The Test Group JSON object contains meta data that applies to all test vectors within the group. The following table describes the secure hash JSON elements of the Test Group JSON object. The test group for ML-KEM / encapDecap / FIPS203 is as follows: Celi Expires 1 November 2024 [Page 12] Internet-Draft ACVP ML-KEM April 2024 +==============+================================+========+ | JSON Value | Description | JSON | | | | type | +==============+================================+========+ | testType | The test operation performed | string | +--------------+--------------------------------+--------+ | parameterSet | The ML-KEM parameter set used | string | +--------------+--------------------------------+--------+ | function | Whether the tests are running | string | | | encapsulation or decapsulation | | +--------------+--------------------------------+--------+ | dk | The decapsulation key when | hex | | | "testType": "VAL" | | +--------------+--------------------------------+--------+ | tests | Array of individual test | array | | | vector JSON objects, which are | | | | defined in Section 8.2.2 | | +--------------+--------------------------------+--------+ Table 7: ML-KEM encapDecap Test Group JSON Object 8.2.2. ML-KEM encapDecap Test Groups JSON Schema Each test group contains an array of one or more test cases. Each test case is a JSON object that represents a single test vector to be processed by the ACVP client. The following table describes the JSON elements for each ML-KEM test vector. +============+=======================================+===========+ | JSON Value | Description | JSON type | +============+=======================================+===========+ | tcId | Numeric identifier for the test case, | integer | | | unique across the entire vector set | | +------------+---------------------------------------+-----------+ | ek | The encapsulation key when | hex | | | "testType": "AFT" | | +------------+---------------------------------------+-----------+ | m | The random value used to derive the | hex | | | shared key when "testType": "AFT" | | +------------+---------------------------------------+-----------+ | c | The cipher text when "testType": | hex | | | "VAL" | | +------------+---------------------------------------+-----------+ Table 8: ML-KEM encapDecap Test Case JSON Object The following is an example JSON object sent from the server to the client for ML-KEM / encapDecap / FIPS203. Celi Expires 1 November 2024 [Page 13] Internet-Draft ACVP ML-KEM April 2024 [ { "acvVersion": }, { "vsId": 0, "algorithm": "ML-KEM", "mode": "encapDecap", "revision": "FIPS203", "testGroups": [ { "tgId": 1, "testType": "AFT", "parameterSet": "ML-KEM-512", "function": "encapsulation", "tests": [ { "tcId": 1, "ek": "75A72D...", "m": "013FD9A..." }, ] }, { "tgId": 2, "testType": "VAL", "parameterSet": "ML-KEM-512", "function": "decapsulation", "dk": "DF479939FAA...", "tests": [ { "tcId": 76, "c": "49D873A9..." } ] } ] } ] 9. Test Vector Responses After the ACVP client downloads and processes a vector set, it must send the response vectors back to the ACVP server. The following table describes the JSON object that represents a vector set response. Celi Expires 1 November 2024 [Page 14] Internet-Draft ACVP ML-KEM April 2024 +===============+============================+===========+ | JSON Property | Description | JSON Type | +===============+============================+===========+ | acvVersion | The ACVP version used | string | +---------------+----------------------------+-----------+ | vsId | The vector set identifier | integer | +---------------+----------------------------+-----------+ | testGroups | The test group objects in | array | | | the response, see Table 10 | | +---------------+----------------------------+-----------+ Table 9: Response JSON Object An example of this is the following { "acvVersion": "version", "vsId": 1, "testGroups": [ ... ] } The 'testGroups' section is used to organize the ACVP client response in a similar manner to how it distributes vectors. +==========+====================================+=========+ | JSON | Description | JSON | | Property | | Type | +==========+====================================+=========+ | tgId | The test group identifier | integer | +----------+------------------------------------+---------+ | tests | The test case objects in the | array | | | response, depending on the | | | | algorithm see Table 11 or Table 13 | | +----------+------------------------------------+---------+ Table 10: Response Group Objects An example of this is the following { "tgId": 1, "tests": [ ... ] } Celi Expires 1 November 2024 [Page 15] Internet-Draft ACVP ML-KEM April 2024 9.1. ML-KEM keyGen Test Vector Responses Each test group contains an array of one or more test cases. Each test case is a JSON object that represents a single test vector to be processed by the ACVP client. The following table describes the JSON elements for each ML-KEM / keyGen / FIPS203 test vector. +============+================================+===========+ | JSON Value | Description | JSON type | +============+================================+===========+ | tcId | The test case identifier | integer | +------------+--------------------------------+-----------+ | ek | The computed encapsulation key | hex | +------------+--------------------------------+-----------+ | dk | The computed decapsulation key | hex | +------------+--------------------------------+-----------+ Table 11: ML-KEM keyGen Test Case Response JSON Object The following is an example JSON test vector response object for ML- KEM / keyGen / FIPS203. [ { "acvVersion": }, { "vsId": 0, "testGroups": [ { "tgId": 1, "tests": [ { "tcId": 1, "ek": "238B9517653...", "dk": "0A851B79883..." } ] } ] } ] 9.2. ML-KEM encapDecap Test Vector Responses The test groups for ML-KEM / encapDecap / FIPS203 contain public key properties. The groups can be described using the following table. Celi Expires 1 November 2024 [Page 16] Internet-Draft ACVP ML-KEM April 2024 +============+=========================================+===========+ | JSON Value | Description | JSON type | +============+=========================================+===========+ | tgId | The test group identifier | integer | +------------+-----------------------------------------+-----------+ | tests | The individual test cases for the group | array | +------------+-----------------------------------------+-----------+ Table 12: ML-KEM encapDecap Test Group Response JSON Object Each test group contains an array of one or more test cases. Each test case is a JSON object that represents a single test vector to be processed by the ACVP client. The following table describes the JSON elements for each ML-KEM / encapDecap / FIPS203 test vector. +============+============================+===========+ | JSON Value | Description | JSON type | +============+============================+===========+ | tcId | The test case identifier | integer | +------------+----------------------------+-----------+ | c | The generated ciphertext | hex | | | only for "testType": "AFT" | | +------------+----------------------------+-----------+ | k | The generated shared | hex | | | secret | | +------------+----------------------------+-----------+ Table 13: ML-KEM encapDecap Test Case Response JSON Object The following is an example JSON test vector response object for ML- KEM / encapDecap / FIPS203. Celi Expires 1 November 2024 [Page 17] Internet-Draft ACVP ML-KEM April 2024 [ { "acvVersion": }, { "vsId": 1564, "testGroups": [ { "tgId": 1, "tests": [ { "tcId": 1, "c": "7DFC404E2...", "k": "5C82A1AB3..." } ] }, { "tgId": 2, "tests": [ { "tcId": 76, "k": "87B9103AA..." } ] } ] } ] 10. Security Considerations There are no additional security considerations outside of those outlined in the ACVP document. 11. IANA Considerations This document does not require any action by IANA. 12. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", RFC 2119, RFC 2119, DOI 10.17487/RFC2119, March 1997, . Celi Expires 1 November 2024 [Page 18] Internet-Draft ACVP ML-KEM April 2024 [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", RFC 8174, RFC 8174, DOI 10.17487/RFC8174, May 2017, . [FIPS203] "", NIST FIPS 203. [ACVP] Fussell, B., Vassilev, A., and H. Booth, "Automatic Cryptographic Validation Protocol", ACVP, 1 July 2019. Author's Address Christopher Celi (editor) Email: christopher.celi@nist.gov Celi Expires 1 November 2024 [Page 19]