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<link href="#rfc.toc" rel="Contents">
<link href="#rfc.section.1" rel="Chapter" title="1 Introduction">
<link href="#rfc.section.2" rel="Chapter" title="2 Terms and Definitions">
<link href="#rfc.section.3" rel="Chapter" title="3 Supported KDFs">
<link href="#rfc.section.4" rel="Chapter" title="4 Test Types and Test Coverage">
<link href="#rfc.section.4.1" rel="Chapter" title="4.1 Test Coverage">
<link href="#rfc.section.5" rel="Chapter" title="5 Capabilities Registration">
<link href="#rfc.section.5.1" rel="Chapter" title="5.1 Prerequisites">
<link href="#rfc.section.5.2" rel="Chapter" title="5.2 Property Registration">
<link href="#rfc.section.5.3" rel="Chapter" title="5.3 Registration Example">
<link href="#rfc.section.5.3.1" rel="Chapter" title="5.3.1 Valid Hash Functions">
<link href="#rfc.section.6" rel="Chapter" title="6 Test Vectors">
<link href="#rfc.section.6.1" rel="Chapter" title="6.1 Test Groups">
<link href="#rfc.section.6.2" rel="Chapter" title="6.2 Test Cases">
<link href="#rfc.section.7" rel="Chapter" title="7 Responses">
<link href="#rfc.section.8" rel="Chapter" title="8 Security Considerations">
<link href="#rfc.section.9" rel="Chapter" title="9 IANA Considerations">
<link href="#rfc.section.10" rel="Chapter" title="10 Acknowledgements">
<link href="#rfc.references" rel="Chapter" title="11 References">
<link href="#rfc.references.1" rel="Chapter" title="11.1 Normative References">
<link href="#rfc.references.2" rel="Chapter" title="11.2 Informative References">
<link href="#rfc.authors" rel="Chapter">
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<meta name="dct.identifier" content="urn:ietf:id:draft-celi-acvp-ans-x942-00" />
<meta name="dct.issued" scheme="ISO8601" content="2019-06-05" />
<meta name="dct.abstract" content="This document defines the JSON schema for testing ANS x9.42 KDF implementations with the ACVP specification." />
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<body>
<table class="header">
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<td class="left">Network Working Group</td>
<td class="right">C. Celi</td>
</tr>
<tr>
<td class="left">Internet-Draft</td>
<td class="right">National Institute of Standards and Technology</td>
</tr>
<tr>
<td class="left">Intended status: Informational</td>
<td class="right">June 5, 2019</td>
</tr>
<tr>
<td class="left">Expires: December 7, 2019</td>
<td class="right"></td>
</tr>
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<p class="title">ACVP ANS x9.42 Key Derivation Function JSON Specification<br />
<span class="filename">draft-celi-acvp-ans-x942-00</span></p>
<h1 id="rfc.abstract"><a href="#rfc.abstract">Abstract</a></h1>
<p>This document defines the JSON schema for testing ANS x9.42 KDF implementations with the ACVP specification.</p>
<h1 id="rfc.status"><a href="#rfc.status">Status of This Memo</a></h1>
<p>This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.</p>
<p>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/.</p>
<p>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."</p>
<p>This Internet-Draft will expire on December 7, 2019.</p>
<h1 id="rfc.copyrightnotice"><a href="#rfc.copyrightnotice">Copyright Notice</a></h1>
<p>Copyright (c) 2019 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
<p>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. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.</p>
<hr class="noprint" />
<h1 class="np" id="rfc.toc"><a href="#rfc.toc">Table of Contents</a></h1>
<ul class="toc">
<li>1. <a href="#rfc.section.1">Introduction</a>
</li>
<li>2. <a href="#rfc.section.2">Terms and Definitions</a>
</li>
<li>3. <a href="#rfc.section.3">Supported KDFs</a>
</li>
<li>4. <a href="#rfc.section.4">Test Types and Test Coverage</a>
</li>
<ul><li>4.1. <a href="#rfc.section.4.1">Test Coverage</a>
</li>
</ul><li>5. <a href="#rfc.section.5">Capabilities Registration</a>
</li>
<ul><li>5.1. <a href="#rfc.section.5.1">Prerequisites</a>
</li>
<li>5.2. <a href="#rfc.section.5.2">Property Registration</a>
</li>
<li>5.3. <a href="#rfc.section.5.3">Registration Example</a>
</li>
<ul><li>5.3.1. <a href="#rfc.section.5.3.1">Valid Hash Functions</a>
</li>
</ul></ul><li>6. <a href="#rfc.section.6">Test Vectors</a>
</li>
<ul><li>6.1. <a href="#rfc.section.6.1">Test Groups</a>
</li>
<li>6.2. <a href="#rfc.section.6.2">Test Cases</a>
</li>
</ul><li>7. <a href="#rfc.section.7">Responses</a>
</li>
<li>8. <a href="#rfc.section.8">Security Considerations</a>
</li>
<li>9. <a href="#rfc.section.9">IANA Considerations</a>
</li>
<li>10. <a href="#rfc.section.10">Acknowledgements</a>
</li>
<li>11. <a href="#rfc.references">References</a>
</li>
<ul><li>11.1. <a href="#rfc.references.1">Normative References</a>
</li>
<li>11.2. <a href="#rfc.references.2">Informative References</a>
</li>
</ul><li><a href="#rfc.authors">Author's Address</a>
</li>
</ul>
<h1 id="rfc.section.1">
<a href="#rfc.section.1">1.</a> <a href="#introduction" id="introduction">Introduction</a>
</h1>
<p id="rfc.section.1.p.1">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 ANS x9.42 KDF implementations using ACVP.</p>
<h1 id="rfc.section.2">
<a href="#rfc.section.2">2.</a> <a href="#conventions" id="conventions">Terms and Definitions</a>
</h1>
<p id="rfc.section.2.p.1">The key words "<strong>MUST</strong>", "<strong>MUST NOT</strong>", "<strong>REQUIRED</strong>", "<strong>SHALL</strong>", "<strong>SHALL NOT</strong>", "<strong>SHOULD</strong>", "<strong>SHOULD NOT</strong>", "<strong>RECOMMENDED</strong>", "<strong>NOT RECOMMENDED</strong>", "<strong>MAY</strong>", and "<strong>OPTIONAL</strong>" in this document are to be interpreted as described in BCP 14 <a href="#RFC2119" class="xref">[RFC2119]</a> <a href="#RFC8174" class="xref">[RFC8174]</a> when, and only when, they appear in all capitals, as shown here.</p>
<p id="rfc.section.2.p.2">This document also refers to the following terms and definitions:</p>
<p></p>
<dl>
<dt>Prompt</dt>
<dd style="margin-left: 8">
<br>thing</dd>
<dt>Registration</dt>
<dd style="margin-left: 8">
<br>thing</dd>
<dt>Response</dt>
<dd style="margin-left: 8">
<br>thing</dd>
<dt>Test Case</dt>
<dd style="margin-left: 8">
<br>thing</dd>
<dt>Test Group</dt>
<dd style="margin-left: 8">
<br>thing</dd>
<dt>Test Vector Set</dt>
<dd style="margin-left: 8">
<br>thing</dd>
<dt>Validation</dt>
<dd style="margin-left: 8">
<br>thing</dd>
</dl>
<p> </p>
<h1 id="rfc.section.3">
<a href="#rfc.section.3">3.</a> <a href="#supported" id="supported">Supported KDFs</a>
</h1>
<p id="rfc.section.3.p.1">The following key derivation functions <strong>MAY</strong> be advertised by the ACVP compliant cryptographic module:</p>
<p></p>
<ul><li>ACVP-KDF-ANSX9.42</li></ul>
<p> </p>
<h1 id="rfc.section.4">
<a href="#rfc.section.4">4.</a> <a href="#testtypes" id="testtypes">Test Types and Test Coverage</a>
</h1>
<p id="rfc.section.4.p.1">This section describes the design of the tests used to validate ANS x9.42 KDF implementations. There is only one test type: functional tests. Each has a specific value to be used in the testType field. The testType field definitions are:</p>
<p id="rfc.section.4.p.2">"AFT" - Algorithm Functional Test. These tests can be processed by the client using a normal 'derive_key' operation. AFTs cause the implementation under test to exercise nomral operations on a single block, multiple blocks, or partial blocks. In all cases, random data is used. The functional tests are designed to verify that the logical components of the key deriviation process are operating correctly.</p>
<h1 id="rfc.section.4.1">
<a href="#rfc.section.4.1">4.1.</a> <a href="#_test_coverage" id="_test_coverage">Test Coverage</a>
</h1>
<p id="rfc.section.4.1.p.1">The tests described in this document have the intention of ensuring an implementation is conformant to XXX.</p>
<h1 id="rfc.section.5">
<a href="#rfc.section.5">5.</a> <a href="#capabilities" id="capabilities">Capabilities Registration</a>
</h1>
<p id="rfc.section.5.p.1">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.</p>
<p id="rfc.section.5.p.2">The algorithm capabilities are 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 for more details on the registration message.</p>
<h1 id="rfc.section.5.1">
<a href="#rfc.section.5.1">5.1.</a> <a href="#prerequisites" id="prerequisites">Prerequisites</a>
</h1>
<p id="rfc.section.5.1.p.1">Each algorithm implementation <strong>MAY</strong> rely on other cryptographic primitives. For example, XXXXXX. 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:</p>
<p id="rfc.section.5.1.p.2">Prerequisites, if applicable, <strong>MUST</strong> be submitted in the registration as the 'prereqVals' JSON property array inside each element of the 'algorithms' array. Each element in the 'prereqVals' array <strong>MUST</strong> contain the following properties</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Property</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
<th class="left">Valid Values</th>
</tr></thead>
<tbody>
<tr>
<td class="left">algorithm</td>
<td class="left">a prerequisite algorithm</td>
<td class="left">string</td>
<td class="left">XXX</td>
</tr>
<tr>
<td class="left">valValue</td>
<td class="left">algorithm validation number</td>
<td class="left">string</td>
<td class="left">XXX</td>
</tr>
</tbody>
</table>
<p id="rfc.section.5.1.p.3">A "valValue" of "same" <strong>SHALL</strong> be used to indicate that the prerequisite is being met by a different algorithm in the capability exchange in the same registration.</p>
<p id="rfc.section.5.1.p.4">An example description of prequisites within a single algorithm capability exchange looks like this</p>
<pre>
"prereqVals":
[
{
"algorithm": "Alg1",
"valValue": "Val-1234"
},
{
"algorithm": "Alg2",
"valValue": "same"
}
]
</pre>
<h1 id="rfc.section.5.2">
<a href="#rfc.section.5.2">5.2.</a> <a href="#properties" id="properties">Property Registration</a>
</h1>
<p id="rfc.section.5.2.p.1">The ANS x9.42 KDF mode capabilities are advertised as JSON objects within the 'capabilities_exchange' property.</p>
<h1 id="rfc.section.5.3">
<a href="#rfc.section.5.3">5.3.</a> <a href="#_registration_example" id="_registration_example">Registration Example</a>
</h1>
<p id="rfc.section.5.3.p.1">A registration <strong>SHALL</strong> use these properties</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Property</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
<th class="left">Valid Values</th>
</tr></thead>
<tbody>
<tr>
<td class="left">algorithm</td>
<td class="left">Name of the algorithm to be validated</td>
<td class="left">string</td>
<td class="left">"kdf-components"</td>
</tr>
<tr>
<td class="left">mode</td>
<td class="left">Mode of the algorithm to be validated</td>
<td class="left">string</td>
<td class="left">"ansix9.42"</td>
</tr>
<tr>
<td class="left">revision</td>
<td class="left">ACVP Test version</td>
<td class="left">string</td>
<td class="left">"1.0"</td>
</tr>
<tr>
<td class="left">prereqVals</td>
<td class="left">Prerequisites of the algorithm</td>
<td class="left">object</td>
<td class="left">See <a href="#prerequisites" class="xref">Section 5.1</a>
</td>
</tr>
<tr>
<td class="left">kdfType</td>
<td class="left">The type of KDF</td>
<td class="left">array</td>
<td class="left">"DER" and/or "concatenation"</td>
</tr>
<tr>
<td class="left">keyLen</td>
<td class="left">The length of the output key in bits</td>
<td class="left">domain</td>
<td class="left">Min: 1, Max: 65536</td>
</tr>
<tr>
<td class="left">otherInfoLen</td>
<td class="left">The length of the other info in bits</td>
<td class="left">domain</td>
<td class="left">Min: 0, Max: 65536</td>
</tr>
<tr>
<td class="left">zzLen</td>
<td class="left">The length of ZZ in bits</td>
<td class="left">domain</td>
<td class="left">Min: 1, Max: 65536</td>
</tr>
<tr>
<td class="left">hashAlg</td>
<td class="left">The supported hash algorithms</td>
<td class="left">array</td>
<td class="left">See <a href="#valid-sha" class="xref">Section 5.3.1</a>
</td>
</tr>
</tbody>
</table>
<p id="rfc.section.5.3.p.2">An example registration within an algorithm capability exchange looks like this</p>
<pre>
"capability_exchange":
[
{
"algorithm": "kdf-components",
"mode": "ansix9.42",
"revision": "1.0",
"prereqVals": [
{
"algorithm": "SHA",
"valValue": "same"
}
],
"kdfType": [
"DER",
"concatenation"
],
"keyLen": [
256,
1024
],
"otherInfoLen": [
0,
1024
],
"zzLen": [
8,
1024
],
"hashAlg": [
"sha-1",
"sha2-224",
"sha2-256",
"sha2-384",
"sha2-512",
"sha2-512/224",
"sha2-512/256",
"sha3-224",
"sha3-256",
"sha3-384",
"sha3-512"
]
}
]
</pre>
<h1 id="rfc.section.5.3.1">
<a href="#rfc.section.5.3.1">5.3.1.</a> <a href="#valid-sha" id="valid-sha">Valid Hash Functions</a>
</h1>
<p id="rfc.section.5.3.1.p.1">The following hash functions <strong>MAY</strong> be advertised by an ACVP compliant client under the 'hashAlg' property</p>
<p></p>
<ul>
<li>SHA-1</li>
<li>SHA2-224</li>
<li>SHA2-256</li>
<li>SHA2-384</li>
<li>SHA2-512</li>
<li>SHA2-512/224</li>
<li>SHA2-512/256</li>
<li>SHA3-224</li>
<li>SHA3-256</li>
<li>SHA3-384</li>
<li>SHA3-512</li>
</ul>
<p> </p>
<h1 id="rfc.section.6">
<a href="#rfc.section.6">6.</a> <a href="#test-vectors" id="test-vectors">Test Vectors</a>
</h1>
<p id="rfc.section.6.p.1">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 ANS x9.42 KDF algorithms.</p>
<p id="rfc.section.6.p.2">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</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Values</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
</tr></thead>
<tbody>
<tr>
<td class="left">acvVersion</td>
<td class="left">Protocol version identifier</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">vsId</td>
<td class="left">Vector set identifier</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">algorithm</td>
<td class="left">Algorithm defined in the capability exchange</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">mode</td>
<td class="left">Mode defined in the capability exchange</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">revision</td>
<td class="left">Protocol test revision selected</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">testGroups</td>
<td class="left">Array of test groups containing test data</td>
<td class="left">array</td>
</tr>
</tbody>
</table>
<p id="rfc.section.6.p.3">An example of this would look like this</p>
<pre>
{
"acvVersion": "version",
"vsId": 1,
"algorithm": "Alg1",
"mode": "Mode1",
"revision": "Revision1.0",
"testGroups": [ ... ]
}
</pre>
<h1 id="rfc.section.6.1">
<a href="#rfc.section.6.1">6.1.</a> <a href="#_test_groups" id="_test_groups">Test Groups</a>
</h1>
<p id="rfc.section.6.1.p.1">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 ANS x9.42 KDF JSON elements of the Test Group JSON object</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Values</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
</tr></thead>
<tbody>
<tr>
<td class="left">tgId</td>
<td class="left">Test group identifier</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">kdfType</td>
<td class="left">The type of ANS x9.42 KDF</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">zzLen</td>
<td class="left">The length of ZZ in bits</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">otherInfoLen</td>
<td class="left">The length of the other info in bits</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">keyLen</td>
<td class="left">The key output length in bits</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">hashAlg</td>
<td class="left">The hash algorithm used</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">testType</td>
<td class="left">Describes the operation the client should perform on the tests data</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">tests</td>
<td class="left">Array of individual test cases</td>
<td class="left">array</td>
</tr>
</tbody>
</table>
<p id="rfc.section.6.1.p.2">The 'tgId', 'testType' and 'tests' objects <strong>MUST</strong> appear in every test group element communicated from the server to the client as a part of a prompt. Other properties are dependent on which 'testType' the group is addressing.</p>
<h1 id="rfc.section.6.2">
<a href="#rfc.section.6.2">6.2.</a> <a href="#_test_cases" id="_test_cases">Test Cases</a>
</h1>
<p id="rfc.section.6.2.p.1">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 ANS x9.42 KDF test vector.</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Values</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
</tr></thead>
<tbody>
<tr>
<td class="left">tcId</td>
<td class="left">Test case idenfitier</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">zz</td>
<td class="left">Zz value</td>
<td class="left">hex</td>
</tr>
<tr>
<td class="left">otherInfo</td>
<td class="left">Other info value</td>
<td class="left">hex</td>
</tr>
</tbody>
</table>
<p id="rfc.section.6.2.p.2">Here is an abbreviated yet fully constructed example of the prompt</p>
<pre>
{
"vsId": 1,
"algorithm": "kdf-components",
"mode": "ansix9.42",
"revision": "1.0",
"testGroups": [
{
"tgId": 1,
"testType": "AFT",
"tests": [
{
"tcId": 1,
"zz": "F2",
"otherInfo": ""
},
{
"tcId": 2,
"zz": "96",
"otherInfo": ""
}
],
"hashAlg": "SHA-1",
"keyLen": 256,
"kdfType": "DER",
"otherInfoLen": 0,
"zzLen": 8
}
]
}
</pre>
<h1 id="rfc.section.7">
<a href="#rfc.section.7">7.</a> <a href="#responses" id="responses">Responses</a>
</h1>
<p id="rfc.section.7.p.1">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.</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Property</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
</tr></thead>
<tbody>
<tr>
<td class="left">acvVersion</td>
<td class="left">The version of the protocol</td>
<td class="left">string</td>
</tr>
<tr>
<td class="left">vsId</td>
<td class="left">The vector set identifier</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">testGroups</td>
<td class="left">The test group data</td>
<td class="left">array</td>
</tr>
</tbody>
</table>
<p id="rfc.section.7.p.2">An example of this is the following</p>
<pre>
{
"acvVersion": "version",
"vsId": 1,
"testGroups": [ ... ]
}
</pre>
<p id="rfc.section.7.p.3">The testGroups section is used to organize the ACVP client response in a similar manner to how it receives vectors. Several algorithms <strong>SHALL</strong> require the client to send back group level properties in their response. This structure helps accommodate that.</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Property</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
</tr></thead>
<tbody>
<tr>
<td class="left">tgId</td>
<td class="left">The test group identifier</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">tests</td>
<td class="left">The test case data</td>
<td class="left">array</td>
</tr>
</tbody>
</table>
<p id="rfc.section.7.p.4">An example of this is the following</p>
<pre>
{
"tgId": 1,
"tests": [ ... ]
}
</pre>
<p id="rfc.section.7.p.5">The following table describes the JSON object that represents a test case response for a ANS x9.42 KDF.</p>
<table cellpadding="3" cellspacing="0" class="tt full center">
<thead><tr>
<th class="left">JSON Property</th>
<th class="left">Description</th>
<th class="left">JSON Type</th>
</tr></thead>
<tbody>
<tr>
<td class="left">tcId</td>
<td class="left">The test case identifier</td>
<td class="left">integer</td>
</tr>
<tr>
<td class="left">derivedKey</td>
<td class="left">The outputted key</td>
<td class="left">hex</td>
</tr>
</tbody>
</table>
<p id="rfc.section.7.p.6">Here is an abbreviated example of the response</p>
<pre>
{
"vsId": 1,
"algorithm": "kdf-components",