Reference record for OID 1.3.6.1.5.5.7.3.27

id-kp-cmcCA

Status in source: unspecified.

Names: id-kp-cmcCA

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-kp-cmcCA",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "{",
    "id-kp",
    "27",
    "}"
  ]
}

• RFC Editor · RFC 6402 · RFC errata · Publisher's source file: Certificate Management over CMS (CMC) Updates

  Module: EnrollmentMessageSyntax-2011-v88

  Published definition

  id-kp-cmcCA OBJECT IDENTIFIER ::= { id-kp 27 }

  Module imports

  {'PKIXCRMF-2005': ['CertReqMsg', 'PKIPublicationInfo', 'CertTemplate'], 'PKIX1Explicit88': ['AlgorithmIdentifier', 'Extension', 'Name', 'CertificateSerialNumber', 'id-ad', 'id-kp'], 'PKIX1Implicit88': ['GeneralName', 'CRLReason', 'ReasonFlags', 'GeneralNames'], 'CryptographicMessageSyntax2004': ['ContentInfo', 'Attribute', 'IssuerAndSerialNumber']}

  · Download Certificate Management over CMS (CMC) Updates

  Related source files and packages:

  • RFC TXT — rfc5912.txtFile: rfc/rfc5912.txt; 216,154 bytes
  • RFC XML — rfc10002.xmlFile: rfc/rfc10002.xml; 387,783 bytes
  
  Source location: EnrollmentMessageSyntax-2011-v88::id-kp-cmcCA.
  Source version and references

  Downloaded: 2026-10-19T00:22:56.153207+00:00.

• RFC Editor · RFC 10002 · RFC errata · Publisher's source file: Certificate Management over CMS (CMC)

  Module: EnrollmentMessageSyntax-2025

  Published definition

  id-kp-cmcCA OBJECT IDENTIFIER ::= { id-kp 27 }

  Module imports

  {'HMAC-2010': ['maca-hMAC-SHA256'], 'PKIXAlgs-2009': ['mda-sha1'], 'PKIXCRMF-2009': ['CertReqMsg', 'PKIPublicationInfo', 'CertTemplate'], 'PBKDF2-PRFs-2025': ['kda-PBKDF2'], 'PKIX1Explicit-2009': ['Name', 'id-pkix', 'PublicKeyAlgorithms', 'SignatureAlgorithms', 'id-ad', 'id-kp'], 'PKIX1Implicit-2009': ['CertificateSerialNumber', 'GeneralName', 'CRLReason', 'ReasonFlags', 'CertExtensions', 'GeneralNames'], 'PKIX-CommonTypes-2009': ['EXTENSION', 'ATTRIBUTE'], 'AlgorithmInformation-2009': ['DIGEST-ALGORITHM', 'KEY-WRAP', 'KEY-DERIVATION', 'MAC-ALGORITHM', 'SIGNATURE-ALGORITHM', 'PUBLIC-KEY'], 'PKIX1-PSS-OAEP-Algorithms-2009': ['mda-sha256'], 'CryptographicMessageSyntax-2010': ['ContentInfo', 'IssuerAndSerialNumber', 'CONTENT-TYPE'], 'CryptographicMessageSyntaxAlgorithms-2009': ['maca-hMAC-SHA1']}

  · Download Certificate Management over CMS (CMC)

  Related source files and packages:

  • RFC TXT — rfc2898.txtFile: rfc/rfc2898.txt; 68,692 bytes
  • RFC TXT — rfc7292.txtFile: rfc/rfc7292.txt; 58,991 bytes
  • RFC TXT — rfc8018.txtFile: rfc/rfc8018.txt; 80,887 bytes

  Show all 5 related files and packages

  • RFC XML — rfc9579.xmlFile: rfc/rfc9579.xml; 67,148 bytes
  • RFC XML — rfc9879.xmlFile: rfc/rfc9879.xml; 71,463 bytes
  
  Source location: EnrollmentMessageSyntax-2025::id-kp-cmcCA.
  Source version and references

  Downloaded: 2026-10-19T00:26:54.958160+00:00.

1.3.6.1.5.5.7.3.27

Status in source: unspecified.

{
  "value": "27",
  "description": "id-kp-cmcCA"
}

• IANA SMI Numbers · Publisher's source file: smi-numbers.xml · Download smi-numbers.xml
  Source location: smi-numbers-1.3.6.1.5.5.7.3/record[27].
  Source version and references

  Downloaded: 2026-10-18T22:58:17.903721+00:00.

• RFC Editor · RFC 7299 · RFC errata · Publisher's source file: Object Identifier Registry for the PKIX Working Group · Official record
  Historical registry context (July 2014)

  SMI Security for PKIX Extended Key Purpose · 1.3.6.1.5.5.7.3.

  Status in this publication: Assigned.

  Allocation policy in this publication: Specification Required. Current IANA registry

  27       id-kp-cmcCA                     [RFC6402]

  · Download Object Identifier Registry for the PKIX Working Group
  Source location: RFC7299 section 3.6 allocation 27.
  Source version and references

  Downloaded: 2026-10-19T00:23:50.834312+00:00.

id-kp-cmcCA

Status in source: unspecified.

Names: id-kp-cmcCA

{
  "smi_kind": "OBJECT IDENTIFIER",
  "definition": [
    "id-kp-cmcCA",
    "OBJECT",
    "IDENTIFIER",
    "::=",
    "{",
    "iso",
    "(",
    "1",
    ")",
    "identified-organization",
    "(",
    "3",
    ")",
    "dod",
    "(",
    "6",
    ")",
    "internet",
    "(",
    "1",
    ")",
    "security",
    "(",
    "5",
    ")",
    "mechanisms",
    "(",
    "5",
    ")",
    "pkix",
    "(",
    "7",
    ")",
    "kp",
    "(",
    "3",
    ")",
    "27",
    "}"
  ]
}

• RFC Editor · RFC 9480 · RFC errata · Publisher's source file: Certificate Management Protocol (CMP) Updates · Official record
  Published definition

  id-kp-cmcCA OBJECT IDENTIFIER ::= {
           iso(1) identified-organization(3) dod(6) internet(1)
           security(5) mechanisms(5) pkix(7) kp(3) 27 }

  Source data warning: The appendix publishes many established CMP OID/value mappings as commented examples for selecting supported InfoTypeAndValue contents. Only explicit registered numeric mappings are retained. Comment markers are omitted for comparison, with the exact commented source and edition notes preserved.

  Source data warning: RFC 9480 is superseded by RFC 9810. Its 1988/2002 ASN.1 editions and their dated information-value syntax are retained separately from the later publication.

  Related ASN.1 definitions

  id-kp-cmcCA OBJECT IDENTIFIER ::= {
           iso(1) identified-organization(3) dod(6) internet(1)
           security(5) mechanisms(5) pkix(7) kp(3) 27 }

  -- id-kp-cmcCA OBJECT IDENTIFIER ::= { id-kp 27 }

  -- id-kp-cmcCA OBJECT IDENTIFIER ::= { id-kp 27 }

  RFC 9480 use documented in November 2023

  New Section 4.5 - Extended Key Usage · Section 2.2:

  Dated CMP information-type and PKI entity key-purpose identifiers. The appendix comments document registered information values and their value syntax; enabling a supported information set is environment-specific. These references do not allocate hypothetical future extension values.

  · Download Certificate Management Protocol (CMP) Updates

  Related source files and packages:

  • RFC XML — rfc9480.xmlFile: rfc/rfc9480.xml; 214,691 bytes
  • RFC TXT — rfc2985.txtFile: rfc/rfc2985.txt; 70,703 bytes
  • RFC XML — rfc9810.xmlFile: rfc/rfc9810.xml; 578,791 bytes

  Show all 5 related files and packages

  • RFC 5280 — explicit PKIX key-purpose namespaceFile: rfc/rfc5280.txt; 352,580 bytes
  • RFC 4211 — independent CRMF control namespaceFile: rfc/rfc4211.txt; 86,136 bytes
  
  Source location: RFC9480 supplemental 2.2::id-kp-cmcCA.
  Source version and references

  Downloaded: 2026-10-19T00:26:22.961800+00:00.

• RFC Editor · RFC 9810 · RFC errata · Publisher's source file: Internet X.509 Public Key Infrastructure -- Certificate Management Protocol (CMP) · Official record
  Published definition

  id-kp-cmcCA OBJECT IDENTIFIER ::= {
          iso(1) identified-organization(3) dod(6) internet(1)
          security(5) mechanisms(5) pkix(7) kp(3) 27 }

  Source data warning: The appendix publishes many established CMP OID/value mappings as commented examples for selecting supported InfoTypeAndValue contents. Only explicit registered numeric mappings are retained. Comment markers are omitted for comparison, with the exact commented source and edition notes preserved.

  Related ASN.1 definitions

  id-kp-cmcCA OBJECT IDENTIFIER ::= {
          iso(1) identified-organization(3) dod(6) internet(1)
          security(5) mechanisms(5) pkix(7) kp(3) 27 }

  -- id-kp-cmcCA OBJECT IDENTIFIER ::= { id-kp 27 }

  RFC 9810 use documented in July 2025

  EKU for PKI Entities · Section 4.5:

  Dated CMP information-type and PKI entity key-purpose identifiers. The appendix comments document registered information values and their value syntax; enabling a supported information set is environment-specific. These references do not allocate hypothetical future extension values.

  · Download Internet X.509 Public Key Infrastructure -- Certificate Management Protocol (CMP)
  Source location: RFC9810 supplemental 4.5::id-kp-cmcCA.
  Source version and references

  Downloaded: 2026-10-19T00:26:43.627077+00:00.

id-kp-cmcCA

Status in source: unspecified.

Names: id-kp-cmcCA

{
  "wire_encoding": {
    "hex": "06 08 2b 06 01 05 05 07 03 1b",
    "form": "DER OBJECT IDENTIFIER or AlgorithmIdentifier",
    "numeric_oid_verified": true
  },
  "protocol_mapping": {
    "der": "06 08 2B 06 01 05 05 07 03 1B",
    "value": "15",
    "registry": "c509-extended-key-usages"
  }
}

• IANA CBOR Encoded X.509 mappings · Publisher's source file: cbor-encoded-x509-c509.xml · Download cbor-encoded-x509-c509.xml
  Source location: c509-extended-key-usages/record[15].
  Source version and references

  Downloaded: 2026-10-20T03:46:28.337296+00:00.