Reference record for OID 2.5.44

Parent

2.5 (ds)

Node code

Node names

algorithm
id-algo
algorithms

Numeric OID

2.5.44

URN notation

urn:oid:2.5.44

ASN.1 notation

{2 5 44}

{joint-iso-itu-t(2) ds(5) algorithm(44)}
{joint-iso-itu-t(2) ds(5) id-algo(44)}
{joint-iso-itu-t(2) ds(5) algorithms(44)}
{joint-iso-ccitt(2) ds(5) algorithm(44)}
{joint-iso-ccitt(2) ds(5) id-algo(44)}
{joint-iso-ccitt(2) ds(5) algorithms(44)}

OID-IRI notation

/2/5/44
/Joint-ISO-ITU-T/5/44

Named path variants

/joint-iso-itu-t/ds/algorithm
/joint-iso-itu-t/ds/id-algo
/joint-iso-itu-t/ds/algorithms
/joint-iso-ccitt/ds/algorithm
/joint-iso-ccitt/ds/id-algo
/joint-iso-ccitt/ds/algorithms

Source records

id-algo

Status in source: unspecified.

Names: id-algo

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-algo",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "{",
    "joint-iso-itu-t",
    "ds",
    "(",
    "5",
    ")",
    "algo",
    "(",
    "44",
    ")",
    "}"
  ]
}

ITU official formal descriptions · Publisher's source file: GenAlgo.html · Official record
Module: GenAlgo
Published definition
```
id-algo OBJECT IDENTIFIER ::= {joint-iso-itu-t ds(5) algo(44)}
```
Module imports
```
{'PKI-Stub': ['ALGORITHM']}
```
· Download GenAlgo.html
Related source files and packages:
- ASN.1 class PKI-StubFile: ITU-T/formal-language/itu-t/x/x510/2023/PKI-Stub.html; 9,367 bytes
Source location: GenAlgo::id-algo.
Source version and references

Published package: ITU-T X.510 2023-10; file: GenAlgo.html.

Downloaded: 2026-10-20T15:07:35.848243+00:00.

algorithms

Status in source: unspecified.

Names: algorithms

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "algorithms",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "{",
    "ds",
    "44",
    "}"
  ]
}

ITU official formal descriptions · Publisher's source file: PKI-Stub.html · Official record
Module: PKI-Stub
Published definition
```
algorithms           OBJECT IDENTIFIER ::= {ds 44}
```
· Download PKI-Stub.html
Source location: PKI-Stub::algorithms.
Source version and references

Published package: ITU-T X.510 2020-08; file: PKI-Stub.html.

Downloaded: 2026-10-20T15:07:35.050604+00:00.
ITU official formal descriptions · Publisher's source file: PKI-Stub.html · Official record
Module: PKI-Stub
Published definition
```
algorithms           OBJECT IDENTIFIER ::= {ds 44}
```
· Download PKI-Stub.html
Source location: PKI-Stub::algorithms.
Source version and references

Published package: ITU-T X.510 2023-10; file: PKI-Stub.html.

Downloaded: 2026-10-20T15:07:36.154675+00:00.

algorithm

Status in source: unspecified.

Names: algorithm

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "algorithm",
    "ID",
    "::=",
    "{",
    "ds",
    "44",
    "}"
  ]
}

ITU official formal descriptions · Publisher's source file: UsefulDefinitions.html · Official record
Module: UsefulDefinitions
Published definition
```
algorithm                                ID ::= {ds 44}
```
· Download UsefulDefinitions.html
Source location: UsefulDefinitions::algorithm.
Source version and references

Published package: ITU-T X.501 2019-10; file: UsefulDefinitions.html.

Downloaded: 2026-10-20T15:07:33.729156+00:00.

id-algo

Status in source: unspecified.

Names: id-algo

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-algo",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "algorithms"
  ]
}

ITU official formal descriptions · Publisher's source file: PKI-Stub.html · Official record
Module: PKI-Stub
Published definition
```
id-algo              OBJECT IDENTIFIER ::= algorithms
```
· Download PKI-Stub.html
Source location: PKI-Stub::id-algo.
Source version and references

Published package: ITU-T X.510 2020-08; file: PKI-Stub.html.

Downloaded: 2026-10-20T15:07:35.050604+00:00.
ITU official formal descriptions · Publisher's source file: PKI-Stub.html · Official record
Module: PKI-Stub
Published definition
```
id-algo              OBJECT IDENTIFIER ::= algorithms
```
· Download PKI-Stub.html
Source location: PKI-Stub::id-algo.
Source version and references

Published package: ITU-T X.510 2023-10; file: PKI-Stub.html.

Downloaded: 2026-10-20T15:07:36.154675+00:00.

id-algo

Status in source: unspecified.

Names: id-algo

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-algo",
    "ID",
    "::=",
    "algorithm"
  ]
}

ITU official formal descriptions · Publisher's source file: UsefulDefinitions.html · Official record
Module: UsefulDefinitions
Published definition
```
id-algo                                  ID ::= algorithm
```
· Download UsefulDefinitions.html
Source location: UsefulDefinitions::id-algo.
Source version and references

Published package: ITU-T X.501 2019-10; file: UsefulDefinitions.html.

Downloaded: 2026-10-20T15:07:33.729156+00:00.

First Registration Authority (inferred from ancestor 2.5)

Hoyt Kesterson & R. Exner

Current Registration Authority (inferred from ancestor 2)

ITU-T SG 17 & ISO/IEC JTC 1/SC 6

Direct children (8)

OID	Name	Direct children	Descendants
2.5.44.0	nullAlgorithm	0	0
2.5.44.1	encryptionAlgorithm, id-ea, id-algo-mca	19	19
2.5.44.2	hashAlgorithm, id-ha, id-algo-ska	30	80
2.5.44.3	id-sa, signatureAlgorithm, id-algo-aead, id-algo-pka	1	1
2.5.44.4	id-algo-pka, id-algo-ha	0	0
2.5.44.5	id-algo-ha, id-algo-dsa	0	0
2.5.44.6	id-algo-dsa, id-algo-kem	7	7
2.5.44.7	id-algo-kea	7	7

Siblings (41)

OID	Name	Direct children	Descendants	Description
2.5.1	module	49	298	ASN.1 modules
2.5.2	serviceElement	0	0	Directory service element.
2.5.3	applicationContext, id-ac	16	32	Application context.
2.5.4	attributeType, id-at	107	193	Attribute type
2.5.5	attributeSyntaxVendor, attributeSyntax, dummyCurv	18	18	Attribute syntax vendor
2.5.6	objectClass, id-oc, objectClass-oid	45	47	Information object classes
2.5.7	attribute-set	0	0	X.500 attribute sets
2.5.8	algorithm	4	7	Enveloped digital signature algorithm
2.5.9	abstractSyntax, id-as	33	33	Abstract syntaxes
2.5.12	dsaOperationalAttribute, id-doa	9	9	DSA (Directory System Agent) operational attributes
2.5.13	matchingRule, id-mr	77	77	Matching rules
2.5.14	knowledgeMatchingRule, id-kmr	4	4	Knowledge matching rules
2.5.15	nameForm, id-nf	21	21	Nname forms
2.5.16	group	0	0	Group.
2.5.17	subentry, id-sc	6	6	Subentries
2.5.18	operationalAttributeType, id-oa	49	49	Operational attribute types
2.5.19	operationalBinding, id-ob	3	3	Operational bindings
2.5.20	schemaObjectClass, id-soc	3	3	Schema object classes
2.5.21	schemaOperationalAttribute, id-soa	13	13	Schema operational attributes
2.5.22	22	0	0	Unused
2.5.23	administrativeRoles, id-ar	9	9	Administrative roles.
2.5.24	accessControlAttribute, id-aca	4	4	Access control attributes
2.5.25	rosObject, id-rosObject	9	9	ROS (Remote Operation Service) objects
2.5.26	contract, id-contract	5	5	Contracts
2.5.27	package, id-package	13	13	Packages
2.5.28	accessControlSchemes, id-acScheme	5	5	Access control schemes
2.5.29	certificateExtension, id-ce	75	193	Certificate extensions
2.5.30	managementObject, id-mgt	6	243	Management objects
2.5.31	attributeValueContext, id-avc	6	6	Attribute value contexts
2.5.32	securityExchange, id-se	2	2	Security exchanges
2.5.33	idmProtocol, id-idm	4	4	IDM Protocol
2.5.34	problem, id-pr	36	36	Problem definitions
2.5.35	notification, id-not	18	18	Notification attributes
2.5.36	matchingRestriction, id-mre	0	0	Matching restriction
2.5.37	controlAttributeType, id-cat	4	4	Control attribute type
2.5.38	keyPurposes, id-kp	0	0	Key purposes
2.5.39	passwordQuality, id-pq	4	4	Password quality
2.5.40	attributeSyntax, id-asx, id-ats	20	20	Attribute syntax
2.5.41	avRestriction, id-avr	1	1
2.5.42	cmsContentType, id-cmsct	20	20
2.5.43	id-wrprot, wrapperProtocolType	3	3