Reference record for OID 2.5.44.2

Parent

2.5.44 (algorithm, id-algo, algorithms)

Node code

Node names

hashAlgorithm
id-ha
id-algo-ska

Numeric OID

2.5.44.2

URN notation

urn:oid:2.5.44.2

ASN.1 notation

{2 5 44 2}

{joint-iso-itu-t(2) ds(5) algorithm(44) hashAlgorithm(2)}
{joint-iso-itu-t(2) ds(5) algorithm(44) id-ha(2)}
{joint-iso-itu-t(2) ds(5) algorithm(44) id-algo-ska(2)}
{joint-iso-itu-t(2) ds(5) id-algo(44) hashAlgorithm(2)}
{joint-iso-itu-t(2) ds(5) id-algo(44) id-ha(2)}
{joint-iso-itu-t(2) ds(5) id-algo(44) id-algo-ska(2)}
{joint-iso-itu-t(2) ds(5) algorithms(44) hashAlgorithm(2)}
{joint-iso-itu-t(2) ds(5) algorithms(44) id-ha(2)}
{joint-iso-itu-t(2) ds(5) algorithms(44) id-algo-ska(2)}
{joint-iso-ccitt(2) ds(5) algorithm(44) hashAlgorithm(2)}
{joint-iso-ccitt(2) ds(5) algorithm(44) id-ha(2)}
{joint-iso-ccitt(2) ds(5) algorithm(44) id-algo-ska(2)}
{joint-iso-ccitt(2) ds(5) id-algo(44) hashAlgorithm(2)}
{joint-iso-ccitt(2) ds(5) id-algo(44) id-ha(2)}
{joint-iso-ccitt(2) ds(5) id-algo(44) id-algo-ska(2)}
{joint-iso-ccitt(2) ds(5) algorithms(44) hashAlgorithm(2)}
Additional combinations skipped.

OID-IRI notation

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

Named path variants

/joint-iso-itu-t/ds/algorithm/hashAlgorithm
/joint-iso-itu-t/ds/algorithm/id-ha
/joint-iso-itu-t/ds/algorithm/id-algo-ska
/joint-iso-itu-t/ds/id-algo/hashAlgorithm
/joint-iso-itu-t/ds/id-algo/id-ha
/joint-iso-itu-t/ds/id-algo/id-algo-ska
/joint-iso-itu-t/ds/algorithms/hashAlgorithm
/joint-iso-itu-t/ds/algorithms/id-ha
/joint-iso-itu-t/ds/algorithms/id-algo-ska
/joint-iso-ccitt/ds/algorithm/hashAlgorithm
/joint-iso-ccitt/ds/algorithm/id-ha
/joint-iso-ccitt/ds/algorithm/id-algo-ska
/joint-iso-ccitt/ds/id-algo/hashAlgorithm
/joint-iso-ccitt/ds/id-algo/id-ha
/joint-iso-ccitt/ds/id-algo/id-algo-ska
/joint-iso-ccitt/ds/algorithms/hashAlgorithm
Additional combinations skipped.

Source records

id-algo-ska

Status in source: unspecified.

Names: id-algo-ska

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-algo-ska",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "{",
    "id-algo",
    "ska",
    "(",
    "2",
    ")",
    "}"
  ]
}

ITU official formal descriptions · Publisher's source file: GenAlgo.html · Official record
Module: GenAlgo
Published definition
```
id-algo-ska  OBJECT IDENTIFIER ::= {id-algo ska(2) }
```
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-ska.
Source version and references

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

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

id-ha

Status in source: unspecified.

Names: id-ha

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-ha",
    "ID",
    "::=",
    "hashAlgorithm"
  ]
}

ITU official formal descriptions · Publisher's source file: AlgorithmObjectIdentifiers.html · Official record
Module: AlgorithmObjectIdentifiers
Published definition
```
id-ha                   ID ::= hashAlgorithm
```
Module imports
```
{'UsefulDefinitions': ['algorithm'], 'AuthenticationFramework': ['ALGORITHM', 'AlgorithmIdentifier', 'SupportedAlgorithms', 'SupportedCurves']}
```
· Download AlgorithmObjectIdentifiers.html
Related source files and packages:
- ASN.1 class AuthenticationFrameworkFile: ITU-T/formal-language/itu-t/x/x509/2019/AuthenticationFramework.html; 20,677 bytes
Source location: AlgorithmObjectIdentifiers::id-ha.
Source version and references

Published package: ITU-T X.509 2019-10; file: AlgorithmObjectIdentifiers.html.

Downloaded: 2026-10-20T15:07:33.839767+00:00.

hashAlgorithm

Status in source: unspecified.

Names: hashAlgorithm

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "hashAlgorithm",
    "ID",
    "::=",
    "{",
    "algorithm",
    "2",
    "}"
  ]
}

ITU official formal descriptions · Publisher's source file: AlgorithmObjectIdentifiers.html · Official record
Module: AlgorithmObjectIdentifiers
Published definition
```
hashAlgorithm           ID ::= {algorithm 2}
```
Module imports
```
{'UsefulDefinitions': ['algorithm'], 'AuthenticationFramework': ['ALGORITHM', 'AlgorithmIdentifier', 'SupportedAlgorithms', 'SupportedCurves']}
```
· Download AlgorithmObjectIdentifiers.html
Related source files and packages:
- ASN.1 class AuthenticationFrameworkFile: ITU-T/formal-language/itu-t/x/x509/2019/AuthenticationFramework.html; 20,677 bytes
Source location: AlgorithmObjectIdentifiers::hashAlgorithm.
Source version and references

Published package: ITU-T X.509 2019-10; file: AlgorithmObjectIdentifiers.html.

Downloaded: 2026-10-20T15:07:33.839767+00:00.

id-algo-ska

Status in source: unspecified.

Names: id-algo-ska

Technical details

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-algo-ska",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "{",
    "id-algo",
    "2",
    "}"
  ]
}

ITU official formal descriptions · Publisher's source file: GenAlgo.html · Official record
Module: GenAlgo
Published definition
```
id-algo-ska  OBJECT IDENTIFIER ::= {id-algo 2}
```
Module imports
```
{'PKI-Stub': ['ALGORITHM', 'id-algo']}
```
· Download GenAlgo.html
Related source files and packages:
- Selected import PKI-StubFile: ITU-T/formal-language/itu-t/x/x510/2023/PKI-Stub.html; 9,367 bytes
- ITU-T X.680 (2015) Amd.1 — import version selectionFile: rec/dologin_pub.asp; 447,384 bytes
Source location: GenAlgo::id-algo-ska.
Source version and references

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

Downloaded: 2026-10-20T15:07:34.876079+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 (30)

OID	Name	Direct children	Descendants
2.5.44.2.1	id-ha-sqMod-n, aes-ecb128	3	3
2.5.44.2.2	aes-ecb192	1	1
2.5.44.2.3	aes-ecb256	1	1
2.5.44.2.5	aes-cbc128	3	3
2.5.44.2.6	aes-cbc192	1	1
2.5.44.2.7	aes-cbc256	1	1
2.5.44.2.9	aes-ofb128	3	3
2.5.44.2.10	aes-ofb192	1	1
2.5.44.2.11	aes-ofb256	1	1
2.5.44.2.13	aes-cfb128	3	3
2.5.44.2.14	aes-cfb192	1	1
2.5.44.2.15	aes-cfb256	1	1
2.5.44.2.17	aes-ctr128	3	3
2.5.44.2.18	aes-ctr192	1	1
2.5.44.2.19	aes-ctr256	1	1
2.5.44.2.21	aes-128gcm	3	3
2.5.44.2.22	aes-192gcm	1	1
2.5.44.2.23	aes-256gcm	1	1
2.5.44.2.25	aes-128gcm-siv	3	3
2.5.44.2.26	aes-192gcm-siv	1	1
2.5.44.2.27	aes-256gcm-siv	1	1
2.5.44.2.29	aes-128ccm	3	3
2.5.44.2.30	aes-192ccm	1	1
2.5.44.2.31	aes-256ccm	1	1
2.5.44.2.33	aes-128gmac	3	3
2.5.44.2.34	aes-192gmac	1	1
2.5.44.2.35	aes-256gmac	1	1
2.5.44.2.37	aes-128cmac	3	3
2.5.44.2.38	aes-192cmac	1	1
2.5.44.2.39	aes-256cmac	1	1

Siblings (7)

OID	Name	Direct children	Descendants
2.5.44.0	nullAlgorithm	0	0
2.5.44.1	encryptionAlgorithm, id-ea, id-algo-mca	19	19
2.5.44.3	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