Internet-Draft ACVP DRBG November 2024
Vassilev Expires 5 May 2025 [Page]
Workgroup:
Network Working Group
Internet-Draft:
draft-vassilev-acvp-drbg-00
:
Published:
Intended Status:
Informational
Expires:
Author:
A. Vassilev

ACVP Deterministic Random Bit Generator (DRBG) Algorithm JSON Specification

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/.

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This Internet-Draft will expire on 5 May 2025.

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Table of Contents

1. Acknowledgements

There are no acknowledgements.

2. Abstract

This document defines the JSON schema for testing SP800-90A DRBG implementations with the ACVP specification.

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 SP800-90A DRBG 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

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 DRBGs

The following deterministic random bit generator algorithms MAY be advertised by the ACVP compliant cryptographic module:

5.1. Counter DRBG Triple-DES

The "ctrDRBG-TDES" mode shall only be used with the three-key option of the Triple-DES algorithm.

6. Test Types and Test Coverage

The ACVP server performs a set of tests on the IUT's DRBG in order to assess the correctness and robustness of the implementation. A typical ACVP validation session would require multiple tests to be performed for every supported permutation of DRBG capabilities. This section describes the design of the tests used to validate implementations of the DRBG algorithms. There is a single test type for DRBG testing:

6.1. Test Coverage

The tests described in this document have the intention of ensuring an implementation is conformant to [SP800-90A].

6.1.1. Requirements Covered

  • SP 800-90A - 7.1 Entropy Input. The IUT is REQUIRED to inject the ACVP server's provided entropy for testing.
  • SP 800-90A - 7.2 Other Inputs. The IUT is REQUIRED to inject the ACVP server's provided other input information for testing.
  • SP 800-90A - 7.3 Internal State. Indirect testing of the IUT's DRBG internal state SHALL be inferred through multiple calls to the DRBG "generate" function. Multiple calls SHALL ensure the internal state is successfully mutated for each "generate" invocation.
  • SP 800-90A - 7.4 The DRBG Mechanism Functions. "Instantiate", "Generate", and "Reseed" DRBG functions SHALL be tested within the ACVP server's provided tests.
  • SP 800-90A - 8 DRBG Mechanism Concepts and General Requirements. The ACVP server SHALL validate "Instantiate", "Generate", and "Reseed" are properly implemented. Reseeding is partially tested through ACVP test vectors through an explicit reseed operation.
  • SP 800-90A - 9 DRBG Mechanism Functions. "Instantiate", "Generate", and "Reseed" SHALL be evaluated as a part of ACVP generated tests.
  • SP 800-90A - 10 DRBG Algorithm Specifications. "Instantiate", "Generate", and "Reseed" DRBG functions in scope SHALL be tested as per the specifications in this section.

6.1.2. Requirements Not Covered

  • SP 800-90A - 7.1 Entropy Input. The ACVP Server SHALL provide all instances of randomness to utilize from the IUT's perspective. Implementation of the IUT's RBG SHALL NOT be in scope of testing.
  • SP 800-90A - 7.2 Other Inputs. The ACVP server SHALL provide all instances of randomness throughout the IUT's testing of the DRBG.
  • SP 800-90A - 7.3 Internal State. Though direct testing of the IUT's internal state SHALL NOT be not performed, the act of testing multiple "generate" outputs from the IUT DRBG helps to ensure a successful IUT implementation.
  • SP 800-90A - 7.4 The DRBG Mechanism Functions. "Uninstantiate", "Health Test" SHALL NOT be in scope of testing.
  • SP 800-90A - 8 DRBG Mechanism Concepts and General Requirements. The ACVP server SHALL NOT directly validate internal DRBG state. Additionally, DRBG boundaries are out of scope of ACVP testing. Seed construction is performed by the ACVP server, the IUT is REQUIRED to utilize the ACVP provided seed (via entropy, inputs, etc) to perform validation testing. Reseeds operations that are performed automatically due to a large number of generate operations, SHALL NOT be in scope of ACVP testing.
  • SP 800-90A - 9 DRBG Mechanism Functions. Error conditions (CATASTROPHIC_ERROR_FLAG or otherwise), reseeding due to end of seed life, uninstantiation, and health checks are out of scope of ACVP tests.
  • SP 800-90A - 10 DRBG Algorithm Specifications. All previously mentioned DRBG functions that are not in scope - Uninstantiate, Health check, automatic reseed, error conditions - SHALL NOT be tested as part of testing.
  • SP 800-90A - 11 Assurances. Health check and error handling testing SHALL NOT be performed within the scope of ACVP testing.

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 DRBG 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:

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

Table 1: Prerequisite Properties
JSON Property Description JSON Type
algorithm a prerequisite algorithm string
valValue algorithm validation number string

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. DRBG Algorithm Registration Properties

Each SP800-90A DRBG algorithm capability advertised is a self-contained JSON object using the following values.

Table 2: DRBG Algorithm Capabilities JSON Values
JSON Value Description JSON type Valid Values
algorithm The DRBG algorithm to be validated string See Section 5
revision ACVP Test version string "1.0"
prereqVals Prerequisite algorithm validations object with algorithm and valValue properties See above
predResistanceEnabled An implementation that can be used with prediction resistance. See the notes in Section 7.3 array of boolean containing one or two distinct values [true], [true, false], or [false]
reseedImplemented Reseeding of the DRBG shall be performed in accordance with the specification for the given DRBG mechanism. See the notes in Section 7.3 boolean true or false
capabilities The individual DRBG capabilities array of capability objects See Table 3

7.3. DRBG Capabilities JSON Values

ACVP has default values for many of the input parameters for testing the DRBG algorithms. For example, the Entropy Input, Nonce, Personalization String, and Addtional Input parameters have default values. The specific details and restrictions on each of these input lengths is specified in this section and in Section 7.4. To indicate a preference for using a default value for any of these parameters, the value zero (0) should be set. If the implementation does not support one of these defaults, the corresponding supported bit length values shall be set explicitly.

Each DRBG algorithm capability advertised is a self-contained JSON object. A registration SHALL use these properties within each object within the 'capabilities' property.

Table 3: Registration Capability JSON Values
JSON Value Description JSON type Valid Values
mode The algorithm mode to be validated string See the mode column of Table 4
derFuncEnabled Derivation function option. See the notes below. boolean true/false
entropyInputLen See the notes below. domain Min: maximum security strength (see Table 4), Max: See Table 4
nonceLen See the notes below. domain Min: half the maximum security strength (see Table 4), Max: See Table 4. Set to 0 if not supported.
persoStringLen Personalization string length. See the notes below. domain Min: maximum security strength (see Table 4), Max: See Table 4. Set to 0 if not supported
additionalInputLen See the notes below. domain Min: maximum security strength (see Table 4), Max: See Table 4. Set to 0 if not supported
returnedBitsLen Returned bits length integer Min: See Table 4, Max: 4096.

7.4. Supported values per DRBG option

DRBG minimum/maximum values for the properties listed in Table 3 vary depending on the DRBG capabilities registered. The following table lists those values.

Table 4: Supported DRBG Values
DRBG Algorithm Mode Derivation Function Max Security Strength Min Entropy Len Max Entropy Len Max PersoString Max Addl String Min Nonce Len (please see the note following this table) Max Nonce Len Min returnedBits Len
ctrDRBG "AES-128" TRUE 128 128 65536 65536 65536 64 65536 128
ctrDRBG "AES-192" TRUE 192 192 65536 65536 65536 96 65536 128
ctrDRBG "AES-256" TRUE 256 256 65536 65536 65536 128 65536 128
ctrDRBG "TDES" TRUE 112 112 65536 65536 65536 56 65536 64
ctrDRBG "AES-128" FALSE 128 256 256 256 256 0 0 128
ctrDRBG "AES-192" FALSE 192 320 320 320 320 0 0 128
ctrDRBG "AES-256" FALSE 256 384 384 384 384 0 0 128
ctrDRBG "TDES" FALSE 112 232 232 232 232 0 0 64
hashDRBG "SHA-1" N/A 128 128 65536 65536 65536 64 65536 160
hashDRBG "SHA2-224" N/A 192 192 65536 65536 65536 96 65536 224
hashDRBG "SHA2-256" N/A 256 256 65536 65536 65536 128 65536 256
hashDRBG "SHA2-384" N/A 256 256 65536 65536 65536 128 65536 384
hashDRBG "SHA2-512" N/A 256 256 65536 65536 65536 128 65536 512
hashDRBG "SHA2-512/224" N/A 192 192 65536 65536 65536 96 65536 224
hashDRBG "SHA2-512/256" N/A 256 256 65536 65536 65536 128 65536 256
hashDRBG "SHA3-224" N/A 192 192 65536 65536 65536 96 65536 224
hashDRBG "SHA3-256" N/A 256 256 65536 65536 65536 128 65536 256
hashDRBG "SHA3-384" N/A 256 256 65536 65536 65536 128 65536 384
hashDRBG "SHA3-512" N/A 256 256 65536 65536 65536 128 65536 512
hmacDRBG "SHA-1" N/A 128 128 65536 65536 65536 64 65536 160
hmacDRBG "SHA2-224" N/A 192 192 65536 65536 65536 96 65536 224
hmacDRBG "SHA2-256" N/A 256 256 65536 65536 65536 128 65536 256
hmacDRBG "SHA2-384" N/A 256 256 65536 65536 65536 128 65536 384
hmacDRBG "SHA2-512" N/A 256 256 65536 65536 65536 128 65536 512
hmacDRBG "SHA2-512/224" N/A 192 192 65536 65536 65536 96 65536 224
hmacDRBG "SHA2-512/256" N/A 256 256 65536 65536 65536 128 65536 256
hmacDRBG "SHA3-224" N/A 192 192 65536 65536 65536 96 65536 224
hmacDRBG "SHA3-256" N/A 256 256 65536 65536 65536 128 65536 256
hmacDRBG "SHA3-384" N/A 256 256 65536 65536 65536 128 65536 384
hmacDRBG "SHA3-512" N/A 256 256 65536 65536 65536 128 65536 512

7.5. DRBG Registration Example

The following is an example registration.

{
  "algorithm": "ctrDRBG",
  "revision": "1.0",
  "predResistanceEnabled": [
    true,
    false
  ],
  "reseedImplemented": true,
  "capabilities": [
    {
      "mode": "TDES",
      "derFuncEnabled": true,
      "entropyInputLen": [
        232
      ],
      "nonceLen": [
        232
      ],
      "persoStringLen": [
        232
      ],
      "additionalInputLen": [
        232
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "AES-128",
      "derFuncEnabled": false,
      "entropyInputLen": [
        256
      ],
      "nonceLen": [
        256
      ],
      "persoStringLen": [
        256
      ],
      "additionalInputLen": [
        256
      ],
      "returnedBitsLen": 512
    }
  ]
}

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 cryptographic algorithm defined during the capability exchange. This section describes the JSON schema for a test vector set used with SP800-90A DRBG 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.

Table 5: Top Level Test Vector JSON Elements
JSON Values Description JSON Type
acvVersion Protocol version identifier string
vsId Unique numeric vector set identifier integer
algorithm Algorithm defined in the capability exchange string
mode Mode defined in the capability exchange string
revision Protocol test revision selected string
testGroups Array of test group JSON objects, which are defined in Section 8.1 array

An example of this would look like this

[
  {
    "acvVersion": <version>
  },
  {
    "vsId": 1,
    "algorithm": "Alg1",
    "mode": "Mode1",
    "revision": "Revision1.0",
    "testGroups": [ ... ]
  }
]

8.1. Test Groups

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 SP800-90A DRBG JSON elements of the Test Group JSON object

Table 6: Test Group JSON Object
JSON Value Description JSON type
tgId Test group identifier integer
mode The mode of the DRBG, see Section 5 string
derFunc Use derivation function or not boolean
predResistance Use prediction resistance boolean
reSeed Use reseeding boolean
entropyInputLen Entropy length integer
nonceLen Nonce length; set to 0 if not used/supported. See also notes after Table 3 above integer
persoStringLen Personalization string length; set to 0 if not used/supported. See also notes after Table 3 above integer
additonalInputLen Additional input length; set to 0 if not used/supported. See also notes after Table 3 above integer
returnedBitsLen returned bits length integer
tests Array of individual test cases array

The 'tgId', 'testType' and 'tests' objects MUST 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' (see Section 6) the group is addressing.

Table 7: Generated Test Data per Scenario
Prediction Resistance Assurance Options Test Procedure
"predResistanceEnabled" : true; "reseedImplemented": true
Instantiate DRBG
Generate but don't output
Generate output
Uninstantiate
"predResistanceEnabled" : false; "reseedImplemented" : true
Instantiate DRBG
Reseed
Generate but don't output
Generate output
Uninstantiate
"predResistanceEnabled" : true/false; "reseedImplemented": false
Instantiate DRBG
Generate but don't output
Generate output
Uninstantiate

8.2. Test Cases

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 SP800-90A DRBG test vector.

Table 8: Test Case JSON Object
JSON Value Description JSON type
tcId Test case idenfitier integer
entropyInput Entropy value hex
nonce Value of the nonce hex
persoString value of the personlization string hex
otherInput array of additonal input/entropy input value pairs for testing. See Table 9 array

Each test group contains an array of one or more tests. Each test object contains an otherInput object, which is an array of objects, each with the intendedUse property indicating if the particular test data is to be used for reSeed or generate - see Table 7. Each test vector is a JSON object that represents a single test case to be processed by the ACVP client. The following table describes the JSON elements for each DRBG predcition resistance test vector.

Table 9: DRBG Predictive Resistance JSON Elements
JSON Value Description JSON type
additionalInput value of the additional input string to use in predition resistance tests hex
entropyInput value of the entropy input to use in prediction resistance tests hex
intendedUse "reSeed", "generate" string

Here is an abbreviated yet fully constructed example of the prompt

{
  "vsId": 1,
  "algorithm": "ctrDRBG",
  "revision": "1.0",
  "testGroups": [
    {
      "tgId": 1,
      "testType": "AFT",
      "derFunc": true,
      "reSeed": true,
      "predResistance": true,
      "entropyInputLen": 256,
      "nonceLen": 256,
      "persoStringLen": 256,
      "additionalInputLen": 256,
      "returnedBitsLen": 512,
      "mode": "AES-128",
      "tests": [
        {
          "tcId": 1,
          "entropyInput": "E9EDA8BF1E6155BDF11AD74E2702004C20B39...",
          "nonce": "D77D611F0665CBFD7E00D5E5118629F5F40996B764F0...",
          "persoString": "E9ADEA726418EF002C03DC2196296D4B273AB6...",
          "otherInput": [
            {
              "intendedUse": "generate",
              "additionalInput": "52F47C6A1B12C202D309D062C3EE09...",
              "entropyInput": "C30F4C916B90A79B5764DC6FA950B3F34..."
            },
            {
              "intendedUse": "generate",
              "additionalInput": "4FFDE712D249A99006F46D7070D5CA...",
              "entropyInput": "8A4724F1514C480DE1604C5D870CFA464..."
            }
          ]
        },
        {
          "tcId": 2,
          "entropyInput": "DC1B4E9B1782A9E701CB2A74EDBDF483462E9...",
          "nonce": "A5B7D117BDE77D46A65DBD0EBA085C4376C7B72F164E...",
          "persoString": "D7FC54DD4E759C8D3FCE61463ED40BE130D2B4...",
          "otherInput": [
            {
              "intendedUse": "generate",
              "additionalInput": "28EFD5114D06D1A065863C50BDD2DE...",
              "entropyInput": "F5C9DF132A4C066C5D0AFEE79FBC7EB07..."
            },
            {
              "intendedUse": "generate",
              "additionalInput": "D1AACBAE8BA37208161CBA9042BB92...",
              "entropyInput": "5C6D2F80696D1691FCA40B0C3444CE927..."
            }
          ]
        }
      ]
    }
  ]
}

9. 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.

Table 10: Vector Set Response JSON Object
JSON Property Description JSON Type
acvVersion The version of the protocol string
vsId The vector set identifier integer
testGroups The test group data array

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 receives vectors. Several algorithms SHALL require the client to send back group level properties in their response. This structure helps accommodate that.

Table 11: Vector Set Group Response JSON Object
JSON Property Description JSON Type
tgId The test group identifier integer
tests The test case data array

An example of this is the following

{
        "tgId": 1,
        "tests": [ ... ]
}

The following table describes the JSON object that represents a test case response for a SP800-90A DRBG.

Table 12: Test Case Results JSON Object
JSON Property Description JSON Type
tcId The test case identifier integer
returnedBits The outputted bits from the DRBG hex

Here is an abbreviated example of the response

{
  "vsId": 1,
  "algorithm": "ctrDRBG",
  "revision": "1.0",
  "testGroups": [
    {
      "tgId": 1,
      "tests": [
        {
          "tcId": 1,
          "returnedBits": "99F0D5740DCAA1ECC4E5329B38B..."
        },
        {
          "tcId": 2,
          "returnedBits": "62A458CA72C19316A1ECBC3211B..."
        }
      ]
    }
  ]
}

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. Example DRBG Capabilities JSON Object

The following is a example JSON object advertising support for ctrDRBG with TDES and all key sizes of AES.

{
  "algorithm": "ctrDRBG",
  "revision": "1.0",
  "prereqVals":
  [
    {
      "algorithm": "AES",
      "valValue": "1234"
    },
    {
      "algorithm": "TDES",
      "valValue": "5678"
    }
  ],
  "predResistanceEnabled": [
    true,
    false
  ],
  "reseedImplemented": true,
  "capabilities": [
    {
      "mode": "AES-128",
      "derFuncEnabled": true,
      "entropyInputLen": [
        256
      ],
      "nonceLen": [
        256
      ],
      "persoStringLen": [
        256
      ],
      "additionalInputLen": [
        256
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "AES-192",
      "derFuncEnabled": true,
      "entropyInputLen": [
        320
      ],
      "nonceLen": [
        320
      ],
      "persoStringLen": [
        320
      ],
      "additionalInputLen": [
        320
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "AES-256",
      "derFuncEnabled": true,
      "entropyInputLen": [
        384
      ],
      "nonceLen": [
        384
      ],
      "persoStringLen": [
        384
      ],
      "additionalInputLen": [
        384
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "TDES",
      "derFuncEnabled": true,
      "entropyInputLen": [
        232
      ],
      "nonceLen": [
        232
      ],
      "persoStringLen": [
        232
      ],
      "additionalInputLen": [
        232
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "AES-128",
      "derFuncEnabled": false,
      "entropyInputLen": [
        256
      ],
      "nonceLen": [
        256
      ],
      "persoStringLen": [
        256
      ],
      "additionalInputLen": [
        256
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "AES-192",
      "derFuncEnabled": false,
      "entropyInputLen": [
        320
      ],
      "nonceLen": [
        320
      ],
      "persoStringLen": [
        320
      ],
      "additionalInputLen": [
        320
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "AES-256",
      "derFuncEnabled": false,
      "entropyInputLen": [
        384
      ],
      "nonceLen": [
        384
      ],
      "persoStringLen": [
        384
      ],
      "additionalInputLen": [
        384
      ],
      "returnedBitsLen": 512
    },
    {
      "mode": "TDES",
      "derFuncEnabled": false,
      "entropyInputLen": [
        232
      ],
      "nonceLen": [
        232
      ],
      "persoStringLen": [
        232
      ],
      "additionalInputLen": [
        232
      ],
      "returnedBitsLen": 512
    }
  ]
}
Figure 1

The following is a example JSON object advertising support for hashDRBG with various SHA sizes. Note that in this example the implementation works with or without additional input and personalization data.

{
  "algorithm": "hashDRBG",
  "revision": "1.0",
  "prereqVals":
  [
    {
      "algorithm": "AES",
      "valValue": "1234"
    },
    {
      "algorithm": "SHA",
      "valValue": "5678"
    }
  ],
  "predResistanceEnabled": [
    true,
    false
  ],
  "reseedImplemented": true,
  "capabilities": [
    {
      "mode": "SHA-1",
      "derFuncEnabled": false,
      "entropyInputLen": [
        160
      ],
      "nonceLen": [
        160
      ],
      "persoStringLen": [
        160
      ],
      "additionalInputLen": [
        160
      ],
      "returnedBitsLen": 640
    },
    {
      "mode": "SHA2-224",
      "derFuncEnabled": false,
      "entropyInputLen": [
        224
      ],
      "nonceLen": [
        224
      ],
      "persoStringLen": [
        224
      ],
      "additionalInputLen": [
        224
      ],
      "returnedBitsLen": 896
    },
    {
      "mode": "SHA2-256",
      "derFuncEnabled": false,
      "entropyInputLen": [
        256
      ],
      "nonceLen": [
        256
      ],
      "persoStringLen": [
        256
      ],
      "additionalInputLen": [
        256
      ],
      "returnedBitsLen": 1024
    },
    {
      "mode": "SHA2-384",
      "derFuncEnabled": false,
      "entropyInputLen": [
        384
      ],
      "nonceLen": [
        384
      ],
      "persoStringLen": [
        384
      ],
      "additionalInputLen": [
        384
      ],
      "returnedBitsLen": 1536
    },
    {
      "mode": "SHA2-512",
      "derFuncEnabled": false,
      "entropyInputLen": [
        512
      ],
      "nonceLen": [
        512
      ],
      "persoStringLen": [
        512
      ],
      "additionalInputLen": [
        512
      ],
      "returnedBitsLen": 2048
    },
    {
      "mode": "SHA2-512/224",
      "derFuncEnabled": false,
      "entropyInputLen": [
        224
      ],
      "nonceLen": [
        224
      ],
      "persoStringLen": [
        224
      ],
      "additionalInputLen": [
        224
      ],
      "returnedBitsLen": 896
    },
    {
      "mode": "SHA2-512/256",
      "derFuncEnabled": false,
      "entropyInputLen": [
        256
      ],
      "nonceLen": [
        256
      ],
      "persoStringLen": [
        256
      ],
      "additionalInputLen": [
        256
      ],
      "returnedBitsLen": 1024
    }
  ]
}
Figure 2

13. Example Test Vectors JSON Object

The following is a example JSON object for ctrDRBG test vectors sent from the ACVP server to the crypto module.

[
  { "acvVersion": <acvp-version> },
  { "vectorSetId": 1133,
    "algorithm": "ctrDRBG",
    "mode": "TDES",
    "revision": "1.0",
    "testGroups": [
      {
        "tgId": 1,
        "derFunc": true,
        "predResistance": true,
        "reSeed": true,
        "entropyInputLen": 112,
        "nonceLen": 56,
        "persoStringLen": 112,
        "additionalInputLen": 112,
        "returnedBitsLen": 256,
        "tests": [
          {
            "tcId": 1815,
            "entropyInput":"78aac2cb444594e2...",
            "nonce":"41ef9c67ffe438",
            "persoString":"b8e84de200a9239a0...",
            "otherInput" : [
               { "intendedUse" : "generate",
                 "additionalInput":"f1e8edf0...",
                 "entropyInput": "6cd4096638..."},
              { "intendedUse" : "generate",
                "additionalInput" : "f535773...",
                "entropyInput" : "a0cdf5c1c6..."}
              ]
            },
          {
            "tcId": 1816,
            "entropyInput" : "b8ab88b9c5fda8...",
            "nonce": "f1bcc6ff60dd37",
            "persoString" : "018c1f9d22f3c7f...",
            "otherInput" : [
               {"intendedUse" : "generate",
                "additionalInput" : "356a6e9...",
                "entropyInput" : "bed693401b..."},
               {"intendedUse" : "generate",
                "additionalInput" : "4321b3a...",
                "entropyInput" : "a632ef16f2..."}
            ]
          }
        ]
      }
    ]
  }
]
Figure 3

The following is a example JSON object for hmacDRBG test vectors sent from the ACVP server to the crypto module.

[
  { "acvVersion": <acvp-version> },
  { "vectorSetId": 1146,
    "algorithm": "hmacDRBG",
    "mode": "AES-256",
    "revision": "1.0",
    "testGroups": [
      {
        "tgId": 1,
        "predResistance": true,
        "reSeed": false,
        "entropyInputLen": 256,
        "nonceLen": 128,
        "persoStringLen": 256,
        "additionalInputLen": 256,
        "returnedBitsLen": 1024,
        "tests": [
          {
            "tcId": 2111,
            "entropyInput": "ee3392c5f3de6f3...",
            "nonce": "b991a820fac75fd02642ad...",
            "persoString": "30f3a50b0e2309da...",
            "otherInput" : [
               {"intendedUse" : "generate",
                 "additionalInput":"4ea46abe...",
                 "entropyInput": "e4413a2e40..."},
               {"intendedUse" : "generate",
                "additionalInput" : "61b7204...",
                "entropyInput" : "968ea185d1..."}
              ]
            },
          {
            "tcId": 2112,
            "entropyInput" : "a0ace75784b972...",
            "nonce": "b671308068fc7909a360c7...",
            "persoString" : "338d5f2bd93262d...",
            "otherInput" : [
               {"intendedUse" : "generate",
                "additionalInput" : "7acd8bf...",
                "entropyInput" : "47b26bbe93..."},
               {"intendedUse" : "generate",
                "additionalInput" : "d4b24c7...",
                "entropyInput" : "acb63f3b59..."}
            ]
          }
        ]
      }
    ]
  }
]
Figure 4

The following is a example JSON object for hashDRBG test vectors sent from the ACVP server to the crypto module. In this example the implementation is tested without additional input and personalization data.

[
  { "acvVersion": <acvp-version> },
  { "vectorSetId": 1156,
    "algorithm": "hashDRBG",
    "mode": "SHA2-256",
    "revision": "1.0",
    "testGroups": [
      {
        "tgId": 1,
        "predResistance": true,
        "reSeed": false,
        "entropyInputLen": 256,
        "nonceLen": 128,
        "persoStringLen": 0,
        "additionalInputLen": 0,
        "returnedBitsLen": 1024,
        "tests": [
          {
            "tcId": 2151,
            "entropyInput": "ae0a3acd541d0d5...",
            "nonce": "786f03ad697332d74fad7a...",
            "persoString": "",
            "otherInput" : [
                 {"intendedUse" : "generate",
                  "additionalInput": "",
                  "entropyInput": "4852aed7c..."},
                 {"intendedUse" : "generate",
                  "additionalInput" : "",
                  "entropyInput" : "8b8a35a1..."}
              ]
            },
          {
            "tcId": 2152,
            "entropyInput" : "26d8c9a9b982cd...",
            "nonce": "36dff124f908a95a022edf...",
            "persoString" : "",
            "otherInput" : [
               {"intendedUse" : "generate",
                "additionalInput" : "",
                "entropyInput" : "648bbdc4d4..."},
               {"intendedUse" : "generate",
                "additionalInput" : "",
                "entropyInput" : "fff51d05b1..."}
            ]
          }
        ]
      }
    ]
  }
]
Figure 5

The following is a example JSON object for hashDRBG test vectors sent from the ACVP server to the crypto module. In this example the implementation is tested with "predResistance": false, "reSeed": true options.

[
  { "acvVersion": <acvp-version> },
  { "vectorSetId": 1157,
    "algorithm": "hashDRBG",
    "mode": "SHA2-256",
    "revision": "1.0",
    "testGroups": [
      {
        "tgId": 1,
        "predResistance": false,
        "reSeed": true,
        "entropyInputLen": 256,
        "nonceLen": 128,
        "persoStringLen": 256,
        "additionalInputLen": 256,
        "returnedBitsLen": 1024,
        "tests": [
          {
            "tcId": 3151,
            "entropyInput": "860d051cedbb935...",
            "nonce": "5813070f9774d21e644d64...",
            "persoString": "545ba29faf1bb1bf...",
            "otherInput" : [
                 {"intendedUse" : "reSeed",
                   "additionalInput": "95b08...",
                  "entropyInput": "2e92955b1..."},
                 {"intendedUse" : "generate",
                   "additionalInput" : "ddfa...",
                  "entropyInput" : ""},
                 {"intendedUse" : "generate",
                  "additionalInput" : "edb88...",
                  "entropyInput" : ""}
              ]
            },
          {
            "tcId": 3152,
            "entropyInput" : "371d2944c9ace6...",
            "nonce": "4bb34ab1e882d97687c3f8...",
            "persoString" : "c5b03354a9fad34...",
            "otherInput" : [
               {"intendedUse" : "reSeed",
                "additionalInput" : "6e3fa8e...",
                "entropyInput" : "afd7e6b0b4..."},
               {"intendedUse" : "generate",
                "additionalInput" : "deb8ed5...",
                "entropyInput" : ""},
               {"intendedUse" : "generate",
                "additionalInput" : "a554bb9...",
                "entropyInput" : ""}
            ]
          }
        ]
      }
    ]
  }
]
Figure 6

The following is a example JSON object for hashDRBG test vectors sent from the ACVP server to the crypto module. In this example the implementation is tested with "predResistance": false, "reSeed": false options.

[
  { "acvVersion": <acvp-version> },
  { "vectorSetId": 1167,
    "algorithm": "hashDRBG",
    "mode": "SHA2-256",
    "revision": "1.0",
    "testGroups": [
      {
        "tgId": 1,
        "predResistance": false,
        "reSeed": false,
        "entropyInputLen": 256,
        "nonceLen": 128,
        "persoStringLen": 256,
        "additionalInputLen": 256,
        "returnedBitsLen": 1024,
        "tests": [
          {
            "tcId": 4151,
            "entropyInput": "090db63c22de171...",
            "nonce": "6f7c6bec9825079cabd947...",
            "persoString": "c2f1a59806197792...",
            "otherInput" : [
                 {"intendedUse" : "generate",
                  "additionalInput": "3fc72d...",
                  "entropyInput": ""},
                 {"intendedUse" : "generate",
                  "additionalInput" : "968a3...",
                  "entropyInput" : ""}
              ]
            },
          {
            "tcId": 4152,
            "entropyInput" : "bd0e2dbba872bb...",
            "nonce": "a97dfbaea505a3e36210a8...",
            "persoString" : "7d0de87d097551f...",
            "otherInput" : [
               {"intendedUse" : "generate",
                "additionalInput" : "fe1adf1...",
                "entropyInput" : ""},
               {"intendedUse" : "generate",
                "additionalInput" : "1df719a...",
                "entropyInput" : ""}
            ]
          }
        ]
      }
    ]
  }
]
Figure 7

14. Example Test Results JSON Object

The following is a example JSON object for ctrDRBG with TDES test results sent from the crypto module to the ACVP server.

[{
    "acvVersion": <acvp-version>
  },
  {
    "vectorSetId": 1133,
    "testGroups": [{
        "tgId": 1,
        "tests": [{
            "tcId": 1815,
            "returnedBits ": "4565e85447af71..."
          },
          {
            "tcId": 1816,
            "returnedBits": "b67acc3b2231ec5..."
          }
        ]
      }
    ]
  }
]
Figure 8

The following is a example JSON object for HMAC_DRBG test results sent from the crypto module to the ACVP server.

[{
    "acvVersion": <acvp-version>
  },
  {
    "vectorSetId": 1146,
    "testGroups": [{
      "tgId": 1,
      "tests": [{
          "tcId": 2111,
          "returnedBits": "e42130fd1d920a2bc..."
        },
        {
          "tcId": 2112,
          "returnedBits": "495b2a0de6b5fc454..."
        }
      ]
    }]
  }
]
Figure 9

The following is a example JSON object for hashDRBG test results sent from the crypto module to the ACVP server.

[{
    "acvVersion": <acvp-version>
  },
  {
    "vectorSetId": 1156,
    "testGroups": [{
      "tgId": 1,
      "tests": [{
          "tcId": 2151,
          "returnedBits ": "1af967534c670271..."
        },
        {
          "tcId": 2152,
          "returnedBits": "8a74a8c31ea4e6e62..."
        }
      ]
    }]
  }
]
Figure 10

The following is a example JSON object for hashDRBG test results sent from the crypto module to the ACVP server.

[{
    "acvVersion": <acvp-version>
  },
  {
    "vectorSetId": 1157,
    "testGroups": [{
      "tgId": 1,
      "tests": [{
          "tcId": 3151,
          "returnedBits ": "0eadc82746890ee0..."
        },
        {
          "tcId": 3152,
          "returnedBits": "6452be2ee730d7245..."
        }
      ]
    }]
  }
]
Figure 11

The following is a example JSON object for hashDRBG test results sent from the crypto module to the ACVP server.

[{
    "acvVersion": <acvp-version>
  },
  {
    "vectorSetId": 1167,
    "testGroups": [{
      "tgId": 1,
      "tests": [{
          "tcId": 4151,
          "returnedBits ": "5dbfd26651bc7159..."
        },
        {
          "tcId": 4152,
          "returnedBits": "ff3cce0b5585172b1..."
        }
      ]
    }]
  }
]
Figure 12

15. Normative References

[RFC2119]
Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", RFC 2119, RFC 2119, DOI 10.17487/RFC2119, , <https://www.rfc-editor.org/info/rfc2119>.
[RFC7991]
Hoffman, P., "The "xml2rfc" Version 3 Vocabulary", RFC 7991, RFC 7991, DOI 10.17487/RFC7991, , <https://www.rfc-editor.org/info/rfc7991>.
[RFC8174]
Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", RFC 8174, RFC 8174, DOI 10.17487/RFC8174, , <https://www.rfc-editor.org/info/rfc8174>.
[SP800-90A]
Barker, E. B. and J. M. Kelsey, "Recommendation for Random Number Generation Using Deterministic Random Bit Generators", NIST SP 800-90A, , <https://csrc.nist.gov/pubs/sp/800/90/a/final>.
[ACVP]
Fussell, B., Vassilev, A., and H. Booth, "Automatic Cryptographic Validation Protocol", ACVP, .

Author's Address

Apostol Vassilev