SIST EN 319 412-3 V1.4.1:2026

• Abstract:

  The present document specifies a certificate profile for certificates issued to legal persons. The profile defined in the present document builds on requirements defined in ETSI EN 319 412-2 [2]. The present document supports the requirements of EU qualified certificates as specified in the Regulation (EU) No 910/2014 [i.3] as well as other forms of certificate.

• Status: Published
• Public Enquiry End Date: 30-Jun-2026
• Publication Date: 17-Aug-2026
• ICS: 03.080.99 - Other services
• ICS: 35.040.01 - Information coding in general
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 24-Jul-2026
• Due Date: 28-Sep-2026
• Completion Date: 18-Aug-2026
• Ref Project: ETSI EN 319 412-3 V1.4.1 (2026-07) - Electronic Signatures and Trust Infrastructures (ESI); Certificate Profiles; Part 3: Certificate profile for certificates issued to legal persons

SIST EN 319 412-3 V1.4.1:2026 is the Slovenian version of ETSI EN 319 412-3, published by SIST. It specifies the certificate profile for certificates issued to legal persons, building on ETSI EN 319 412-2 and supporting EU qualified certificates under Regulation (EU) No 910/2014 as well as other certificate forms. It is intended for people who design, issue, manage, and validate these certificates in trust services and PKI environments.

What does SIST EN 319 412-3 V1.4.1:2026 specify?

SIST EN 319 412-3 V1.4.1:2026 defines how a certificate for a legal person is structured and which subject and extension fields it uses. The document is organized into scope, references, terms and abbreviations, profile requirements, and an informative change history.

Annex	What it covers
A	Change history

The scope says the profile builds on ETSI EN 319 412-2 and supports both EU qualified certificates and other forms of certificate. In practice, that means this part is used as a profile on top of the common ETSI certificate framework, not as a stand-alone certificate model.

What are the key requirements of SIST EN 319 412-3 V1.4.1:2026?

The most important rules are in clause 4, where SIST EN 319 412-3 V1.4.1:2026 adapts the common certificate profile from ETSI EN 319 412-2 for legal persons. These rules tell issuers which subject attributes to include and how to use the key usage extension.

General profile rule

Clause 4.1 requires all certificate fields and extensions to comply with ETSI EN 319 412-2, except for the amendments stated in this part. For implementers, this means the base profile stays the same unless clause 4 here changes it.

Subject field for a legal person

Clause 4.2.1 requires the subject field to include, at least, countryName, organizationName, organizationIdentifier, and commonName, with only one instance of each. Additional attributes may be present. This is the core identity data in the certificate, so the issuer must populate these fields consistently.

The countryName identifies the country where the legal person is established. The organizationName must be the full registered name, while organizationIdentifier must identify the organization in a way that is different from the name. The commonName is the name the subject commonly uses to represent itself, so it can be a practical display name rather than the full registered name.

Clause 4.2.1 also allows one or more semantics identifiers, as defined in ETSI EN 319 412-1. That helps describe what the organization represents in a machine-readable way.

Clause 4.2.1 further states that organizationName, organizationalUnitName, and commonName may be longer than the size limit stated in IETF RFC 5280 when they are present. In practice, this gives issuers flexibility for real-world legal names, while any stricter local limits need to be handled in the certification practice statement or terms and conditions.

Key usage

Clause 4.3.1 applies the key usage profile from ETSI EN 319 412-2 with the stated exceptions. Certificates used to validate digital signatures over content, such as documents, agreements, or transactions that show origin and integrity, are limited to key usage type A, B, or F. Type A is the preferred choice. For a buyer or issuer, this is the part that controls what the certificate may be used for in signature workflows.

What terms does SIST EN 319 412-3 V1.4.1:2026 define?

• ESI means Electronic Signatures and Trust Infrastructures, the ETSI domain this profile belongs to.
• legal person is the organization or entity for which the certificate is issued.
• subject is the certificate field that carries the legal person identity attributes.
• organizationName is the full registered name of the legal person.
• organizationIdentifier is an identifier for the organization that is different from its name.
• commonName is the name commonly used by the legal person to present itself.
• semantics identifiers are additional identifiers that describe the meaning or role of the subject.

Who uses SIST EN 319 412-3 V1.4.1:2026?

SIST EN 319 412-3 V1.4.1:2026 is used by trust service providers, PKI operators, and certificate profile designers who issue certificates to legal persons. It is also used by implementers of digital signature, authentication, and secure electronic exchange systems that need interoperable subject fields and key usage settings.

Organizations that rely on qualified certificates or other certificate forms for electronic transactions use it to check that the certificate content matches this profile. That matters when certificates must work across different systems and across the European and wider international environment described in the introduction.

What changed in SIST EN 319 412-3 V1.4.1:2026 from the previous edition?

Annex A provides the change history for the series. It records earlier updates to key usage for electronic seals, clarification of naming-field size limits, the allocation of a reference number to each requirement, and an update of obsolete references. The history also shows the move through the later publication versions up to V1.4.1.

Which standards are used with SIST EN 319 412-3 V1.4.1:2026?

Reference	Contribution
ETSI EN 319 412-2	Base certificate profile for certificates issued to natural persons, which this part adapts for legal persons
Recommendation ITU-T X.520	Attribute types used in the subject field, including countryName, organizationName, organizationIdentifier, and commonName
IETF RFC 5280	X.509 certificate and CRL profile, including the naming-size context referenced by this part
ETSI EN 319 412-1	Common data structures, terms, notations, and semantics identifiers for the certificate profile series
Recommendation ITU-T X.509 | ISO/IEC 9594-8	Background framework for public-key and attribute certificates used in the introduction

What does the SIST EN 319 412-3 V1.4.1:2026 document contain?

The document contains a short profile focused on the subject field and key usage for certificates issued to legal persons. Clause 4.2.1 gives the subject-field rules, and clause 4.3.1 gives the key-usage rules for certificates used in digital-signature validation over content.

It also includes references, terminology guidance that points to the companion parts, and an informative Annex A with change history. The structure is compact, so implementers can quickly map the legal-person certificate data model to their issuing and validation systems.

Draft ETSI EN 319 412-3 V1.4.0 (2026-04)

EUROPEAN STANDARD
Electronic Signatures and Trust Infrastructures (ESI);
Certificate Profiles;
Part 3: Certificate profile for certificates issued
to legal persons
2 Draft ETSI EN 319 412-3 V1.4.0 (2026-04)

Reference
REN/ESI-0019412-3v141
Keywords
electronic signature, IP, profile, security, trust
services
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2026.
All rights reserved.
ETSI
3 Draft ETSI EN 319 412-3 V1.4.0 (2026-04)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols, abbreviations and notations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
3.4 Notations . 7
4 Profile requirements . 7
4.1 Generic requirements . 7
4.2 Basic certificate fields . 7
4.2.1 Subject . 7
4.3 Standard certificate extensions . 8
4.3.1 Key usage. 8
Annex A (informative): Change history . 9
History . 10

ETSI
4 Draft ETSI EN 319 412-3 V1.4.0 (2026-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This draft European Standard (EN) has been produced by ETSI Technical Committee Electronic Signatures and Trust
Infrastructures (ESI), and is now submitted for the combined Public Enquiry and Vote phase of the ETSI EN Approval
Procedure (ENAP).
The present document is part 3 of multi-part deliverable covering the Certificate Profiles. Full details of the entire series
can be found in part 1 [i.4].
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months
...

EUROPEAN STANDARD
Electronic Signatures and Trust Infrastructures (ESI);
Certificate Profiles;
Part 3: Certificate profile for certificates issued
to legal persons
2 ETSI EN 319 412-3 V1.4.1 (2026-07)

Reference
REN/ESI-0019412-3v141
Keywords
electronic signature, IP, profile, security,
trust services
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part of this document may be reproduced in any form, by any means and in any media, without the prior written
authorization of ETSI and except as expressly permitted below.
By way of exception and when the document is a normative deliverable (European Standard (EN),
Technical Specification (TS), Group Specification (GS) or ETSI Standard (ES)), ETSI authorizes to reproduce
and incorporate into products, services and technical documentation only those extracts (e.g. templates) that are strictly
necessary for the technical implementation of the normative deliverable, to ensure compliance with the latter.
Nothing in this notice shall be construed as limiting any mandatory exceptions to copyright provided by applicable law.

© ETSI 2026.
All rights reserved.
ETSI
3 ETSI EN 319 412-3 V1.4.1 (2026-07)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols, abbreviations and notations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
3.4 Notations . 7
4 Profile requirements . 7
4.1 Generic requirements . 7
4.2 Basic certificate fields . 7
4.2.1 Subject . 7
4.3 Standard certificate extensions . 8
4.3.1 Key usage. 8
Annex A (informative): Change history . 9
History . 10

ETSI
4 ETSI EN 319 412-3 V1.4.1 (2026-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables (European Standard (EN), Technical Specification (TS),
Group Specification (GS) or ETSI Standard (ES)) may have been declared to ETSI. The declarations pertaining to these
essential IPRs, if any, are publicly available for ETSI members and non-members, and can be found in
ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI IPR
online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Electronic Signatures and Trust
Infrastructures (ESI).
The present document is part 3 of multi-part deliverable covering the Certificate Profiles. Full details of the entire series
can be found in part 1 [i.4].
National transposition dates
Date of adoption of this EN: 9 July 2026
Date of latest announcement of this EN (doa): 31 October 2
...

SLOVENSKI STANDARD
01-september-2026
Elektronski podpisi in infrastrukture zaupanja (ESI) - Profili potrdil - 3. del: Profil
potrdila za potrdila, izdana pravnim osebam
Electronic Signatures and Trust Infrastructures (ESI) - Certificate Profiles - Part 3:
Certificate profile for certificates issued to legal persons
Ta slovenski standard je istoveten z: ETSI EN 319 412-3 V1.4.1 (2026-07)
ICS:
03.080.99 Druge storitve Other services
35.040.01 Kodiranje informacij na Information coding in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
Electronic Signatures and Trust Infrastructures (ESI);
Certificate Profiles;
Part 3: Certificate profile for certificates issued
to legal persons
2 ETSI EN 319 412-3 V1.4.1 (2026-07)

Reference
REN/ESI-0019412-3v141
Keywords
electronic signature, IP, profile, security,
trust services
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part of this document may be reproduced in any form, by any means and in any media, without the prior written
authorization of ETSI and except as expressly permitted below.
By way of exception and when the document is a normative deliverable (European Standard (EN),
Technical Specification (TS), Group Specification (GS) or ETSI Standard (ES)), ETSI authorizes to reproduce
and incorporate into products, services and technical documentation only those extracts (e.g. templates) that are strictly
necessary for the technical implementation of the normative deliverable, to ensure compliance with the latter.
Nothing in this notice shall be construed as limiting any mandatory exceptions to copyright provided by applicable law.

© ETSI 2026.
All rights reserved.
ETSI
3 ETSI EN 319 412-3 V1.4.1 (2026-07)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols, abbreviations and notations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
3.4 Notations . 7
4 Profile requirements . 7
4.1 Generic requirements . 7
4.2 Basic certificate fields . 7
4.2.1 Subject . 7
4.3 Standard certificate extensions . 8
4.3.1 Key usage. 8
Annex A (informative): Change history . 9
History . 10

ETSI
4 ETSI EN 319 412-3 V1.4.1 (2026-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables (European Standard (EN), Technical Specification (TS),
Group Specification (GS) or ETSI Standard (ES)) may have been declared to ETSI. The declarations pertaining to these
essential IPRs, if any, are publicly available for ETSI members and non-members, and can be found in
ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI IPR
online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This European Standard (EN) has been produ
...