PKIaaS provides the following EST (Enrollment over Secure Transport) certificate profiles.

These profiles support the following features.

EST signing use cases

All EST profiles support the following use cases.

ECS Enterprise UI	CA Gateway API	Entrust-hosted Enrollment Gateway	On-prem Enrollment Gateway

EST key usages

See below the Key Usage extension values each EST profile supports.

Profile	Key Usage
est-digital-signature	Digital Signature
est-digital-signature-key-encipherment	Digital Signature, Key Encipherment
est-key-encipherment	Key Encipherment
est-non-repudiation	Digital Signature, Non-Repudiation

All EST profiles support the following non-critical extensions in request.

All EST profiles set the following certificate fields.

Field	Value
Issuer	Customer's subordinate issuing CA.
Subject	No constraint.
Validity period	Less than or equal to the expiry of the issuing CA. Defaults to 1 year if not specified in the request.

All EST profiles set the following certificate extension values.

Extension	Critical	Value
AIA	No	Supplied if the customer enables OCSP when creating the CA
Authority Key Identifier	No	Matches subjectKeyIdentifier of the signing certificate
Basic Constraints	Yes	cA =False
CRL Distribution Points	No	Always present
Extended Key Usage	No	No constraints
Subject Alternative Name	No	No constraints
Subject Key Identifier	No	«The leftmost 160-bits of the SHA-256 hash of the value of the BIT STRING subjectPublicKey» as described in RFC 7093 section 2

All EST profiles support the following key and signature algorithms.

PKIaaS has no restriction on Distinguished Names (DNs) per certificate profile. All certificate profiles support the following identifiers.

Alias	OID
'CN' 'CommonName'	2.5.4.3
'SN' 'SurName'	2.5.4.4
'SERIALNUMBER' 'DeviceSerialNumber'	2.5.4.5
'C' 'Country'	2.5.4.6
'L' 'Locality'	2.5.4.7
'ST' 'S' 'State'	2.5.4.8
'STREET' 'StreetAddress'	2.5.4.9
'O' 'Org' 'Organization'	2.5.4.10
'OU' 'OrganizationalUnit' 'OrganizationUnit' 'OrgUnit'	2.5.4.11
'T' 'Title'	2.5.4.12
'BUSINESSCATEGORY'	2.5.4.15
'POSTALCODE'	2.5.4.17
'givenName' 'G'	2.5.4.42
'I' 'Initials'	2.5.4.43
'ORGANIZATIONIDENTIFIER'	2.5.4.97
'UID'	0.9.2342.19200300.100.1.1
'DC' 'DomainComponent'	0.9.2342.19200300.100.1.25
'Email' 'E'	1.2.840.113549.1.9.1
'unstructuredName'	1.2.840.113549.1.9.2
'unstructuredAddress'	1.2.840.113549.1.9.8
'JurisdictionOfIncorporationLocalityName'	1.3.6.1.4.1.311.60.2.1.1
'JurisdictionOfIncorporationStateOrProvinceName'	1.3.6.1.4.1.311.60.2.1.2
'JurisdictionOfIncorporationCountryName'	1.3.6.1.4.1.311.60.2.1.3
'TrademarkOfficeName'	1.3.6.1.4.1.53087.1.2
'TrademarkCountryOrRegionName'	1.3.6.1.4.1.53087.1.3
'TrademarkRegistration'	1.3.6.1.4.1.53087.1.4
'LegalEntityIdentifier'	1.3.6.1.4.1.53087.1.5
'WordMark'	1.3.6.1.4.1.53087.1.6
'MarkType'	1.3.6.1.4.1.53087.1.13
'StatuteCountryName'	1.3.6.1.4.1.53087.3.2
'StatuteStateOrProvinceName'	1.3.6.1.4.1.53087.3.3
'StatuteLocalityName'	1.3.6.1.4.1.53087.3.4
'StatuteCitation'	1.3.6.1.4.1.53087.3.5
'StatuteURL'	1.3.6.1.4.1.53087.3.6