Internet-Draft ACVP DSA April 2024
Fussell Expires 25 October 2024 [Page]
Workgroup:
Network Working Group
Internet-Draft:
:
Published:
Intended Status:
Informational
Expires:
Author:
B. Fussell, Ed.

ACVP DSA 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/.

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 25 October 2024.

▲

Table of Contents

1. Acknowledgements

There are no acknowledgements.

2. Abstract

This document defines the JSON schema for testing FIPS 186-4 DSA 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 FIPS 186-4 DSA 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 DSA Algorithms

The following DSA algorithm / mode / revision combinations MAY be advertised by the ACVP compliant cryptographic module:

5.1. Supported Conformances for DSA Algorithms

The following DSA algorithms MAY claim conformance to [SP800-106]:

  • DSA / sigGen / 1.0
  • DSA / sigVer / 1.0

6. Test Types and Test Coverage

6.1. Test Types

The ACVP server performs a set of tests on the specified DSA 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 DSA capabilities. This section describes the design of the tests used to validate implementations of the DSA algorithms.

  • DSA / keyGen / 1.0 "AFT" - Algorithm Functional Test. The IUT is REQUIRED for each test case provided, to generate a key pair based on a generated group level PQG. This information is then communicated to the ACVP server and validated.
  • DSA / pqgGen / 1.0 "GDT" - Generated Data Test. The IUT in this test mode is REQUIRED to generate PQ or G as a response to the ACVP provided test vector set.
  • DSA / pqgVer / 1.0 "GDT" - Generated Data Test. In this test mode, the ACVP server is REQUIRED to generate domain parameters for transmission to the IUT. The IUT is expected to evaluate the validity of the domain parameters.
  • DSA / sigGen / 1.0 "AFT" - Algorithm Functional Test. This testing mode expects the IUT to generate valid signatures based on the ACVP provided message. The IUT communicates the PQG, public key, and signature to the ACVP server, and the signature is then validated.
  • DSA / sigVer / 1.0 "AFT" - Algorithm Functional Test. The ACVP server generates a series of signatures to communicate to the IUT. The IUT is REQUIRED to determine the validity of the signature given the PQG, key, and message.

6.2. Test Coverage

The tests described in this document have the intention of ensuring an implementation is conformant to [FIPS186-4] and [SP800-89].

6.2.1. Requirements Covered

  • FIPS186-4 Section 3 General Discussion. Domain parameter generation, key generation, signature generation, and signature validation are all within scope of ACVP server testing.
  • FIPS186-4 Section 4 The Digital Signature Algorithm (DSA). The ACVP server provides a means of the generation and validation of domain parameters. The ACVP server is SHALL support a variety of parameter sizes/hash function for creation and delivery to/from the IUT. The ACVP server SHALL allow for the testing of the validity of domain parameters. Key pair generation testing SHALL be provided by the ACVP server. Both Signature Generation and Validation testing mechanmisms SHALL be provided by the ACVP server.
  • SP800-106 Section 3 Randomized Hashing and Section 4 Digital Signatures Using Randomized Hashing. The IUT SHALL be provided or provide a random value that should be used to "randomize" a message prior to signing and/or verifying an original message.

6.2.2. Requirements Not Covered

  • FIPS186-4 Section 3 General Discussion. Assurances of private key secrecy and ownership SHALL NOT be within scope of ACVP testing.
  • FIPS186-4 Section 4 The Digital Signature Algorithm (DSA). The IUT's selection of parameter sizes and hash functions SHALL NOT be within scope of ACVP server testing. Though the ACVP server SHALL support a variety of parameter sizes/hash functions, the IUT's selection of these is out of scope of testing. The ACVP server MAY provide testing for the validity of domain parameters, but testing SHALL NOT provide assurances the IUT has validated a set of domain parameters prior to their use. Domain parameter and key pair management SHALL NOT be within scope of ACVP testing.
  • SP800-106 Section 3.3 The Random Value. DSA, ECDSA, and RSA have random values generated as per their signing process, this random value can be used as the input to the message randomization function, doing so however is out of scope of this 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 DSA 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. Required Prerequisite Algorithms for DSA Validations

Each DSA implementation relies on other cryptographic primitives. For example, DSA 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:

Table 2: Required DSA Prerequisite Algorithms JSON Values
JSON Value Description JSON type Valid Values algorithm
a prerequisite algorithm string DRBG, SHA, SHA_OPT2 valValue algorithm validation number
string actual number or "same" prereqAlgVal prerequistie algorithm validation object with algorithm and valValue properties
see above prereqVals prerequistie algorithm validations array of prereqAlgVal objects see above

7.3. DSA Algorithm Capabilities Registration

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

Table 3: DSA Algorithm Capabilities JSON Values
JSON Value Description JSON type Valid Values
algorithm The algorithm under test string "DSA"
mode The DSA mode to be validated string "pqgGen", "pqgVer", "keyGen", "sigGen", "sigVer"
revision The algorithm testing revision to use. string "1.0"
prereqVals prerequistie algorithm validations array of prereqAlgVal objects See Section 7.2
capabilities array of JSON objects, each with fields pertaining to the global DSA mode indicated above and identified uniquely by the combination of the DSA "mode" and indicated properties Array of JSON objects See Section 7.4, Section 7.5, Section 7.5.1, Section 7.5.2 or Section 7.5.3
conformances Used to denote the optional conformances that can apply to specific modes of DSA. Array of strings See Section 5.1

7.4. DSA pqgGen Mode Capabilities

The DSA / pqgGen / 1.0 mode capabilities are advertised as JSON objects, which are elements of the 'capabilities' array in the ACVP registration message. See the ACVP specification for details on the registration message.

Each DSA / pqgGen / 1.0 mode capability set is advertised as a self-contained JSON object.

The complete list of DSA PQ and G generation capabilities may be advertised by the ACVP compliant crypto module:

Table 4: DSA pqgGen Capabilities JSON Values
JSON Value Description JSON type Valid Values
l The length in bits of the field and the length in bits of prime p. value 2048, or 3072
n The length in bits of q which is a prime factor of (p-1). value 224, or 256 when L is 2048. Otherwise 256.
pqGen The methods supported to generate p and q. array Any non-empty subset of {"probable", "provable"}.
gGen The methods supported to generate g. array Any non-empty subset of {"unverifiable", "canonical"}.
hashAlg The hash functions supported when generating p, q and g. array Any non-empty subset of {"SHA2-224", "SHA2-256", "SHA2-384", "SHA2-512", "SHA2-512/224", "SHA2-512/256"}. Note that the digest size of the hash function MUST be equal to or greater than N.

An example of the DSA / pqgGen / 1.0 registration is the following

{
  "algorithm": "DSA",
  "mode": "pqgGen",
  "revision": "1.0",
  "prereqVals": [
    {
      "algorithm": "SHA",
      "valValue": "123456"
    },
    {
      "algorithm": "DRBG",
      "valValue": "123456"
    }
  ],
  "capabilities": [
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 2048,
      "n": 224,
      "hashAlg": [
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 2048,
      "n": 256,
      "hashAlg": [
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/256"
      ]
    },
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 3072,
      "n": 256,
      "hashAlg": [
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/256"
      ]
    }
  ]
}

7.5. DSA pqgVer Mode Capabilities

The DSA / pqgVer / 1.0 mode capabilities are advertised as JSON objects, which are elements of the 'capabilities' array in the ACVP registration message. See the ACVP specification for details on the registration message.

Each DSA / pqgVer / 1.0 mode capability set is advertised as a self-contained JSON object.

The complete list of DSA P, Q and G verification capabilities may be advertised by the ACVP compliant crypto module:

Table 5: DSA pqgVer Capabilities JSON Values
JSON Value Description JSON type Valid Values
l The length in bits of the field and the length in bits of prime p. value 1024, 2048, or 3072
n The length in bits of q which is a prime factor of (p-1). value 160 when L is 1024. 224, or 256 when L is 2048. Otherwise 256.
pqGen The methods supported to generate p and q. array Any non-empty subset of {"probable", "provable"}.
gGen The methods supported to generate g. array Any non-empty subset of {"unverifiable", "canonical"}.
hashAlg The hash functions supported when generating p, q and g. array Any non-empty subset of {"SHA-1", "SHA2-224", "SHA2-256", "SHA2-384", "SHA2-512", "SHA2-512/224", "SHA2-512/256"}. Note that the digest size of the hash function MUST be equal to or greater than N.

An example of the DSA / pqgVer / 1.0 registration is the following

{
  "algorithm": "DSA",
  "mode": "pqgVer",
  "revision": "1.0",
  "prereqVals": [
    {
      "algorithm": "SHA",
      "valValue": "123456"
    },
    {
      "algorithm": "DRBG",
      "valValue": "123456"
    }
  ],
  "capabilities": [
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 1024,
      "n": 160,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 2048,
      "n": 224,
      "hashAlg": [
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 2048,
      "n": 256,
      "hashAlg": [
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/256"
      ]
    },
    {
      "pqGen": [
        "probable",
        "provable"
      ],
      "gGen": [
        "unverifiable",
        "canonical"
      ],
      "l": 3072,
      "n": 256,
      "hashAlg": [
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/256"
      ]
    }
  ]
}

7.5.1. DSA keyGen Mode Capabilities

The DSA / keyGen / 1.0 mode capabilities are advertised as JSON objects, which are elements of the 'capabilities' array in the ACVP registration message. See the ACVP specification for details on the registration message.

Each DSA / keyGen / 1.0 mode capability set is advertised as a self-contained JSON object.

The complete list of DSA key generation capabilities may be advertised by the ACVP compliant crypto module:

Table 6: DSA keyGen Capabilities JSON Values
JSON Value Description JSON type Valid Values
l The length in bits of the field and the length in bits of prime p. value 2048, or 3072
n The length in bits of q which is a prime factor of (p-1). value 224, or 256 when L is 2048. Otherwise 256.

An example of this is the following

{
  "algorithm": "DSA",
  "mode": "keyGen",
  "revision": "1.0",
  "prereqVals": [
    {
      "algorithm": "SHA",
      "valValue": "123456"
    },
    {
      "algorithm": "DRBG",
      "valValue": "123456"
    }
  ],
  "capabilities": [
    {
      "n": 224,
      "l": 2048
    },
    {
      "n": 256,
      "l": 2048
    },
    {
      "n": 256,
      "l": 3072
    }
  ]
}

7.5.2. DSA sigGen Mode Capabilities

The DSA / sigGen / 1.0 mode capabilities are advertised as JSON objects, which are elements of the 'capabilities' array in the ACVP registration message. See the ACVP specification for details on the registration message.

Each DSA / sigGen / 1.0 mode capability set is advertised as a self-contained JSON object.

The complete list of DSA signature generation capabilities may be advertised by the ACVP compliant crypto module:

Table 7: DSA sigGen Capabilities JSON Values
JSON Value Description JSON type Valid Values
l The length in bits of the field and the length in bits of prime p. value 2048, or 3072
n The length in bits of q which is a prime factor of (p-1). value 224, or 256 when L is 2048. Otherwise 256.
hashAlg The hash functions supported when signing a message. array Any non-empty subset of {"SHA2-224","SHA2-256", "SHA2-384", "SHA2-512", "SHA2-512/224", "SHA2-512/256"}.

An example of this is the following

{
  "algorithm": "DSA",
  "mode": "sigGen",
  "revision": "1.0",
  "prereqVals": [
    {
      "algorithm": "SHA",
      "valValue": "123456"
    },
    {
      "algorithm": "DRBG",
      "valValue": "123456"
    }
  ],
  "capabilities": [
    {
      "n": 224,
      "l": 2048,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "n": 256,
      "l": 2048,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "n": 256,
      "l": 3072,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    }
  ],
  "conformances": [
    "SP800-106"
  ]
}

7.5.3. DSA sigVer Mode Capabilities

The DSA / sigVer / 1.0 mode capabilities are advertised as JSON objects, which are elements of the 'capabilities' array in the ACVP registration message. See the ACVP specification for details on the registration message.

Each DSA / sigVer / 1.0 mode capability set is advertised as a self-contained JSON object.

The complete list of DSA signature verification capabilities may be advertised by the ACVP compliant crypto module:

Table 8: DSA sigVer Capabilities JSON Values
JSON Value Description JSON type Valid Values
l The length in bits of the field and the length in bits of prime p. value 1024, 2048, or 3072
n The length in bits of q which is a prime factor of (p-1). value 160 when L is 1024. 224, or 256 when L is2048. Otherwise 256.
hashAlg The hash functions supported when verifying a message. array Any non-empty subset of {"SHA-1","SHA2-224", "SHA2-256", "SHA2-384", "SHA2-512", "SHA2-512/224", "SHA2-512/256"}.

An example of this is the following

{
  "algorithm": "DSA",
  "mode": "sigVer",
  "revision": "1.0",
  "prereqVals": [
    {
      "algorithm": "SHA",
      "valValue": "123456"
    },
    {
      "algorithm": "DRBG",
      "valValue": "123456"
    }
  ],
  "capabilities": [
    {
      "n": 160,
      "l": 1024,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "n": 224,
      "l": 2048,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "n": 256,
      "l": 2048,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    },
    {
      "n": 256,
      "l": 3072,
      "hashAlg": [
        "SHA-1",
        "SHA2-224",
        "SHA2-256",
        "SHA2-384",
        "SHA2-512",
        "SHA2-512/224",
        "SHA2-512/256"
      ]
    }
  ],
  "conformances": [
    "SP800-106"
  ]
}

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 FIPS 186-4 DSA 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 9: 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 groups containing test data, see Section 9 array

An example of this would look like this

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

9. 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 session would require multiple test vector sets to be downloaded and processed by the ACVP client. Each test vector set represents an individual crypto algorithm, such as DSA / sigGen / 1.0 etc. This section describes the JSON schema for a test vector set used with DSA crypto 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 10: DSA Vector Set JSON Object
JSON Value Description JSON type
acvVersion Protocol version identifier string
vsId Unique numeric identifier for the vector set integer
algorithm The algorithm used for the test vectors string
mode The mode used for the test vectors string
revision The algorithm testing revision to use string
testGroups Array of test group JSON objects, which are defined in Section 9.1.1, Section 9.2.1, Section 9.3.1, Section 9.4.1, or Section 9.5.1 depending on the algorithm array

9.1. DSA pqgGen Test Vectors

9.1.1. DSA pqgGen 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 DSA / pqgGen / * is as follows:

Table 11: DSA PQGGen Test Group JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
testType The test operation performed string
l Length in bits of prime modulus p integer
n Length in bits of prime divisor q integer
pqMode The specific pq generation mode used in the test group string
gMode The specific g generation mode used in the test group string
hashAlg The hash algorithm used in the test group string
tests Array of individual test vector JSON objects, which are defined in Section 9.1.2 array

9.1.2. DSA pqgGen 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 DSA / pqgGen / 1.0 test vector.

Table 12: DSA PQGGen Test Case JSON Object
JSON Value Description JSON type
tcId Numeric identifier for the test case, unique across the entire vector set integer
p The prime modulus hex
q The prime divisor of p - 1 hex
domainSeed The seed used to generate p and q in the probable method hex
index The index value provided to the g generator in the canonical method hex

The following is an example JSON object sent from the server to the client for DSA / pqgGen / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "algorithm": "DSA",
        "mode": "pqgGen",
        "revision": "1.0",
        "testGroups": [
            {
                "tgId": 1,
                "l": 2048,
                "n": 224,
                "hashAlg": "SHA2-224",
                "pqMode": "probable",
                "testType": "GDT",
                "tests": [
                    {
                        "tcId": 1,
                    }
                ]
            },
            {
                "tgId": 2,
                "l": 2048,
                "n": 224,
                "hashAlg": "SHA2-384",
                "pqMode": "provable",
                "testType": "GDT",
                "tests": [
                    {
                        "tcId": 2,
                    }
                ]
            },
            {
                "tgId": 3,
                "l": 2048,
                "n": 224,
                "hashAlg": "SHA2-224",
                "testType": "GDT",
                "gMode": "unverifiable",
                "tests": [
                    {
                      "tcId": 3,
                      "p": "B9D5DEC1F8541708F...",
                      "q": "9F3FCC1DA20ACCD5C..."
                    }
                ]
            },
            {
                "tgId": 4,
                "l": 2048,
                "n": 224,
                "hashAlg": "SHA2-224",
                "testType": "GDT",
                "gMode": "canonical",
                "tests": [
                    {
                      "tcId": 4,
                      "p": "CACDDA5F26C38B7EF...",
                      "q": "A4D538BAE42A35316...",
                      "domainSeed": "E8A171F4...",
                      "index": "AD"
                    }
                ]
            }
        ]
    }
]

9.2. DSA pqgVer Test Vectors

9.2.1. DSA pqgVer 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 DSA / pqgVer / * is as follows:

Table 13: DSA PQGVer Test Group JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
testType The test operation performed string
l Length in bits of prime modulus p integer
n Length in bits of prime divisor q integer
pqMode The specific pq generation mode used in the test group string
gMode The specific g generation mode used in the test group string
hashAlg The hash algorithm used in the test group string
tests Array of individual test vector JSON objects, which are defined in Section 9.2.2 array

9.2.2. DSA pqgVer 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 DSA / pqgVer / 1.0 test vector.

Table 14: DSA PQGVer Test Case JSON Object
JSON Value Description JSON type
tcId Numeric identifier for the test case, unique across the entire vector set integer
p The prime modulus hex
q The prime divisor of p - 1 hex
domainSeed The seed used to generate p and q in the probable method hex
counter The counter used to generate p and q in the probable method integer
pSeed The seed used to generate p in the provable method hex
qSeed The seed used to generate q in the provable method hex
pCounter The counter used to generate p in the provable method integer
qCounter The counter used to generate q in the provable method integer
g The generator hex
h The index value provided to the g generator in the unverifiable method hex
index The index value provided to the g generator in the canonical method hex

The following is an example JSON object sent from the server to the client for DSA / pqgVer / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "algorithm": "DSA",
        "mode": "pqgVer",
        "revision": "1.0",
        "testGroups": [
          {
            "tgId": 1,
            "l": 1024,
            "n": 160,
            "hashAlg": "SHA-1",
            "testType": "GDT",
            "pqMode": "probable",
            "tests": [
              {
                "tcId": 1,
                "p": "9D9269AC94DB5003355...",
                "q": "C5C97FD66D441234E78...",
                "domainSeed": "259947680F...",
                "counter": 309
              },
            ]
          },
          {
            "tgId": 2,
            "l": 1024,
            "n": 160,
            "hashAlg": "SHA-1",
            "testType": "GDT",
            "pqMode": "provable",
            "tests": [
              {
                "tcId": 36,
                "p": "4BDC98F8302E24CEDCE...",
                "q": "A00C3FEAF8F56910DA5...",
                "pCounter": 1874,
                "qCounter": 115,
                "pSeed": "C4967615C4E1391...",
                "qSeed": "C4967615C4E1391..."
              },
            ]
          },
          {
            "tgId": 3,
            "l": 1024,
            "n": 160,
            "hashAlg": "SHA-1",
            "testType": "GDT",
            "gMode": "unverifiable",
            "tests": [
              {
                "tcId": 211,
                "p": "A1648B0F29F5D38DA507...",
                "q": "9BCF7E1625844A88EABB...",
                "g": "0FB0987B157E12F15D78...",
                "h": "02",
                "domainSeed": "D9F63E102A9..."
              },
            ]
          },
          {
            "tgId": 4,
            "l": 1024,
            "n": 160,
            "hashAlg": "SHA-1",
            "testType": "GDT",
            "gMode": "canonical",
            "tests": [
              {
                "tcId": 246,
                "p": "9A1B46A4498962D12FDE...",
                "q": "B70E07662CADF2A41914...",
                "g": "45659A0B48B5B581E5CA...",
                "index": "45"
              },
            ]
          }
        ]
    }
]

9.3. DSA keyGen Test Vectors

9.3.1. DSA 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 following table describes the secure hash JSON elements of the Test Group JSON object.

The test group for DSA / keyGen / * is as follows:

Table 15: DSA keyGen Test Group JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
testType The test operation performed string
l Length in bits of prime modulus p integer
n Length in bits of prime divisor q integer
tests Array of individual test vector JSON objects, which are defined in Section 9.3.2 array

9.3.2. DSA 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 DSA / keyGen / 1.0 test vector.

Table 16: DSA keyGen Test Case JSON Object
JSON Value Description JSON type
tcId Numeric identifier for the test case, unique across the entire vector set integer

The following is an example JSON object sent from the server to the client for DSA / keyGen / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "algorithm": "DSA",
        "mode": "keyGen",
        "revision": "1.0",
        "testGroups": [
          {
            "tgId": 1,
            "l": 2048,
            "n": 224,
            "tests": [
              {
                "tcId": 1
              },
            ]
          }
        ]
    }
]

9.4. DSA sigGen Test Vectors

9.4.1. DSA sigGen 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 DSA / sigGen / * is as follows:

Table 17: DSA sigGen Test Group JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
testType The test operation performed string
l Length in bits of prime modulus p integer
n Length in bits of prime divisor q integer
hashAlg The hash algorithm used in the test group string
conformance Signifies all test cases within the group should utilize random message hashing as described in [SP800-106]. string
tests Array of individual test vector JSON objects, which are defined in Section 9.4.2 array

9.4.2. DSA sigGen 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 DSA / sigGen / 1.0 test vector.

Table 18: DSA sigGen Test Case JSON Object
JSON Value Description JSON type
tcId Numeric identifier for the test case, unique across the entire vector set integer
message The message used to generate signature or verify signature hex

The following is an example JSON object sent from the server to the client for DSA / sigGen / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "algorithm": "DSA",
        "mode": "sigGen",
        "revision": "1.0",
        "testGroups": [
            {
                "tgId": 1,
                "l": 2048,
                "n": 224,
                "hashAlg": "SHA-1",
                "tests": [
                    {
                        "tcId": 1,
                        "message": "C1FEBB069145F..."
                    }
                ]
            },
            {
                "tgId": 2,
                "l": 2048,
                "n": 224,
                "hashAlg": "SHA-1",
                "conformance": "SP800-106",
                "tests": [
                    {
                        "tcId": 2,
                        "message": "C1FEBB069145F..."
                    }
                ]
            }
        ]
    }
]

9.5. DSA sigVer Test Vectors

9.5.1. DSA sigVer 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 DSA / sigVer / * is as follows:

Table 19: DSA sigVer Test Group JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
testType The test operation performed string
l Length in bits of prime modulus p integer
n Length in bits of prime divisor q integer
p Domain parameter P hex
q Domain parameter Q hex
g Domain parameter G hex
hashAlg The hash algorithm used in the test group string
conformance Signifies all test cases within the group should utilize random message hashing as described in [SP800-106]. string
tests Array of individual test vector JSON objects, which are defined in Section 9.5.2 array

9.5.2. DSA sigVer 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 DSA / sigVer / 1.0 test vector.

Table 20: DSA sigVer Test Case JSON Object
JSON Value Description JSON type
tcId Numeric identifier for the test case, unique across the entire vector set integer
message The message used to generate signature or verify signature hex
randomValue The random value to be used as an input into the message randomization function as described in [SP800-106]. hex
randomValueLen The random value's bit length. integer
r The signature component R hex
s The signature component S hex
y The public key component Y hex

The following is an example JSON object sent from the server to the client for DSA / sigVer / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "algorithm": "DSA",
        "mode": "sigVer",
        "revision": "1.0",
        "testGroups": [
          {
            "tgId": 1,
            "l": 1024,
            "n": 160,
            "p": "A48828B4A4E149C2D1FC66F108D370A2A9E87...",
            "q": "D3C53E62338D4231E42FA9683175C404FBF52...",
            "g": "7BDDD6B8E9B4667397B278F98F446C418EF1A...",
            "hashAlg": "SHA-1",
            "tests": [
              {
                "tcId": 1,
                "message": "1A128C1A61091CE52A8B89D69A3...",
                "y": "A3A2F1AFC3091204B7D7ED3617A80E0FD...",
                "r": "C390851DE10669399308D9F401B0286AA...",
                "s": "26BE6EFDCD2ED6946BFCFE2D396AB3A2E..."
              },
            ]
          },
          {
            "tgId": 2,
            "l": 1024,
            "n": 160,
            "p": "66F108D370A2A9E87DBD49BC09A27017621A...",
            "q": "1F855467465A653D2245B7E31C910A18EF79...",
            "g": "F098ACF73BFC43B1B5E7BFB065FBBDDD6B8E...",
            "hashAlg": "SHA-1",
            "conformance": "SP800-106",
            "tests": [
              {
                "tcId": 2,
                "message": "A0F409909E31C2C23BB7A24B8103F11F...",
                "randomValue": "DB0D25A72C8DEFA0F409909E31C2..."
                "randomValueLen": 1024,
                "y": "A3A284CB56F3A0EF37749B5EA4D2EC824ED5E7EAD481BE520B...",
                "r": "15FE6F6DAEFD42CD5FA7444221CB545BB0CDB95DC9D76E0...",
                "s": "B9AF193E6832934537B0B05D177BA8F7DA48D9DD84D27B8AFE9..."
              },
            ]
          }
        ]
    }
]

10. 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.

Table 21: Response JSON Object
JSON Property Description JSON Type
acvVersion The ACVP version used string
vsId The vector set identifier integer
testGroups The test group objects in the response, see Table 22 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 distributes vectors. Some algorithm / mode / revision combinations might require that additional test group properties are provided in the response.

Table 22: Response Group Objects
JSON Property Description JSON Type
tgId The test group identifier integer
tests The test case objects in the response, depending on the algorithm see Table 24, Table 26, Table 28, Table 30 or Table 32 array

An example of this is the following

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

10.1. DSA PQGGen Test Vector Responses

The test groups for DSA / pqgGen / 1.0 contain public key properties. The groups can be described using the following table.

Table 23: DSA PQGGen Test Group Response JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
tests The individual test cases for the group array

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 DSA / pqgGen / 1.0 test vector.

Table 24: DSA PQGGen Test Case Response JSON Object
JSON Value Description JSON type
tcId The test case identifier integer
p The prime modulus hex
q The prime divisor of p - 1 hex
g The generator hex
domainSeed The seed used to generate p and q in the probable method hex
counter The counter used to generate p and q in the probable method integer
pSeed The seed used to generate p in the provable method hex
qSeed The seed used to generate q in the provable method hex
pCounter The counter used to generate p in the provable method integer
qCounter The counter used to generate q in the provable method integer

The following is an example JSON test vector response object for DSA / pqgGen / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "testGroups": [
            {
              "tgId": 1,
              "tests": [
                {
                  "tcId": 1,
                  "p":"E0BB55A249993FE4...",
                  "q":"C0074BDDC42F22F5...",
                  "domainSeed":"01AA98A...",
                  "counter":379
                }
              ]
            },
            {
              "tgId": 2,
              "tests": [
                {
                  "tcId": 2,
                  "p":"84B73C1CE8E8C10F8...",
                  "q":"A0B7917C9020F2332...",
                  "domainSeed":"98179EF2...",
                  "pSeed":"98179EF2D7FD0...",
                  "qSeed":"98179EF2D7FD0...",
                  "pCounter":596,
                  "qCounter":255
                }
              ]
            },
            {
              "tgId": 3,
              "tests": [
                {
                  "tcId": 3,
                  "g": "01098AD5E87869EF..."
                }
              ]
            },
            {
              "tgId": 4,
              "tests": [
                {
                  "tcId": 4,
                  "g": "5C4AB5D4C901A375..."
                }
              ]
            }
        ]
    }
]

10.2. DSA PQGVer Test Vector Responses

The test groups for DSA / pqgVer / 1.0 contain public key properties. The groups can be described using the following table.

Table 25: DSA PQGVer Test Group Response JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
tests The individual test cases for the group array

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 DSA / pqgVer / 1.0 test vector.

Table 26: DSA PQGVer Test Case Response JSON Object
JSON Value Description JSON type
tcId The test case identifier integer
testPassed Whether or not the pq pair or g verified boolean

The following is an example JSON test vector response object for DSA / pqgVer / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "testGroups": [
          {
            "tgId": 1,
            "tests": [
              {
                "tcId": 1,
                "testPassed": false,
              }
            ]
          },
          {
            "tgId": 2,
            "tests": [
              {
                "tcId": 36,
                "testPassed": false,
              }
            ]
          },
          {
            "tgId": 3,
            "tests": [
              {
                "tcId": 211,
                "testPassed": true,
              }
            ]
          },
          {
            "tgId": 4,
            "tests": [
              {
                "tcId": 246,
                "testPassed": true,
              }
            ]
          }
        ]
    }
]

10.3. DSA keyGen Test Vector Responses

The test groups for DSA / keyGen / 1.0 contain public key properties. The groups can be described using the following table.

Table 27: DSA keyGen Test Group Response JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
p The prime modulus hex
q The prime divisor of p - 1 hex
g The generator hex
tests The individual test cases for the group array

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 DSA / keyGen / 1.0 test vector.

Table 28: DSA keyGen Test Case Response JSON Object
JSON Value Description JSON type
tcId The test case identifier integer
x The private key component X hex
y The public key component Y hex

The following is an example JSON test vector response object for DSA / keyGen / 1.0.

[
    {
        "acvVersion": <acvp-version>
    },
    {
        "vsId": 1564,
        "testGroups": [
          {
            "tgId": 1,
            "p": "9D75F12AD16C09A618F3D25...",
            "q": "F9146BFEC592547B8C69737...",
            "g": "96A7DD911D076093EBBA4D9...",
            "tests": [
              {
                "tcId": 1,
                "x": "6316A9021906CB3F9F6...",
                "y": "8520DE9F113D659F708..."
              }
            ]
          }
        ]
    }
]

10.4. DSA sigGen Test Vector Responses

The test groups for DSA / sigGen / 1.0 contain public key properties. The groups can be described using the following table.

Table 29: DSA sigGen Test Group Response JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
p The prime modulus hex
q The prime divisor of p - 1 hex
g The generator hex
y The public key component Y hex
tests The individual test cases for the group array

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 DSA / sigGen / 1.0 test vector.

Table 30: DSA sigGen Test Case Response JSON Object
JSON Value Description JSON type
tcId The test case identifier integer
r The signature component R hex
s The signature component S hex
randomValue The random value to be used as an input into the message randomization function as described in [SP800-106]. hex
randomValueLen The random value's bit length. integer

The following is an example JSON test vector response object for DSA / sigGen / 1.0.

[
  {
    "acvVersion": <acv-version>
  },
  {
    "vsId": 1564,
    "testGroups": [
      {
        "tgId": 1,
        "p": "C8DC6C77CC31ADAE68F3221D59C7...",
        "q": "B1B7BCF2467F8CC46FCDD2A41327...",
        "g": "6C07130A6F6D05AAC9350936EE06...",
        "y": "79143F63ECCC06B3D35C61DA2FB8...",
        "tests": [
          {
            "tcId": 1,
            "r": "4E7F70A92EC0E6871E2EA278...",
            "s": "641A74C54A0B642DED9FE6EE..."
          }
        ]
      },
      {
        "tgId": 2,
        "p": "77CC31ADAE68F3221D59C75538F6...",
        "q": "82E17546E564816AFB54987C879A...",
        "g": "B1303035FE460CEBF21DDA00CC08...",
        "y": "D699C3B6E150E60443BA461C2564...",
        "tests": [
          {
            "tcId": 2,
            "r": "4E7F70A92EC0E6871E2EA275...",
            "s": "641A74C54A0B642DED9FE6EE...",
            "randomValue": "23678643ACB728...",
            "randomValueLen": 1024
          }
        ]
      }
    ]
  }
]

10.5. DSA sigVer Test Vector Responses

The test groups for DSA / sigVer / 1.0 contain public key properties. The groups can be described using the following table.

Table 31: DSA sigVer Test Group Response JSON Object
JSON Value Description JSON type
tgId The test group identifier integer
tests The individual test cases for the group array

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 DSA / sigVer / 1.0 test vector.

Table 32: DSA sigVer Test Case Response JSON Object
JSON Value Description JSON type
tcId The test case identifier integer
testPassed Whether or not the pq pair or g verified boolean

The following is an example JSON test vector response object for DSA / sigVer / 1.0.

[
  {
    "acvVersion": <acvp-version>
  },
  {
    "vsId": 1564,
    "testGroups": [
      {
        "tgId": 1,
        "tests": [
          {
            "tcId": 1,
            "testPassed": true
          },
          {
            "tcId": 2,
            "testPassed": true
          }
        ]
      }
    ]
  }
]

11. Security Considerations

There are no additional security considerations outside of those outlined in the ACVP document.

12. IANA Considerations

This document does not require any action by IANA.

13. 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>.
[FIPS186-4]
National Institute of Standards and Technology, "Digital Signature Standard (DSS)", NIST FIPS 186-4, , <https://csrc.nist.gov/pubs/fips/186-4/final>.
[SP800-89]
Barker, E. B., "Recommendation for Obtaining Assurances for Digital Signature Applications", NIST SP 800-89, , <https://csrc.nist.gov/pubs/sp/800/89/final>.
[SP800-106]
Dang, Q. H., "Randomized Hashing for Digital Signatures", NIST SP 800-106, , <https://csrc.nist.gov/pubs/sp/800/106/final>.
[ACVP]
Fussell, B., Vassilev, A., and H. Booth, "Automatic Cryptographic Validation Protocol", ACVP, .

Author's Address

Barry Fussell (editor)