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Welcome to the CA/Browser Forum S/MIME Certificate Working Group public email list.

This list is available to read for anyone, however posting is limited to members of the CA/Browser Forum. For more information on becoming a member, please see https://cabforum.org/about/membership/interested-parties/

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Stephen Davidson, … Lahtiharju, Pekka24

5:48 AM

[Discussion] Ballot SMC017v2: Increase Minimum RSA CA Key Size

Telia Company votes YES on Ballot SMC017v2 Best regards, Pekka Lahtiharju From: 'Stephen Davidson

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[Discussion] Ballot SMC017v2: Increase Minimum RSA CA Key Size

Telia Company votes YES on Ballot SMC017v2 Best regards, Pekka Lahtiharju From: 'Stephen Davidson

5:48 AM

Infrastructure Bot

Jun 21

Weekly github digest (S/MIME Certificate Working Group)

Sunday June 21, 2026 Pull requests cabforum/smime (+0/-0/💬1) 1 pull requests received 1 new comments:

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Weekly github digest (S/MIME Certificate Working Group)

Sunday June 21, 2026 Pull requests cabforum/smime (+0/-0/💬1) 1 pull requests received 1 new comments:

Jun 21

Jun 17

CCADB Report - Externally Operated S/MIME Subordinate CAs and Cross-signed Root CAs

Certificate Issuer Common Name Certificate Subject Common Name AAA Certificate Services Apple Public

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CCADB Report - Externally Operated S/MIME Subordinate CAs and Cross-signed Root CAs

Certificate Issuer Common Name Certificate Subject Common Name AAA Certificate Services Apple Public

Jun 17

Stephen Davidson

Jun 16

Draft SMCWG agenda - Wednesday, June 16, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, June 16, 2026 at 11:00 am Eastern

unread,

Draft SMCWG agenda - Wednesday, June 16, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, June 16, 2026 at 11:00 am Eastern

Jun 16

Stephen Davidson

Jun 4

[Approved] Minutes of SMCWG May 20, 2026

## Minutes of SMCWG May 20, 2026 These are the Minutes of the meeting described in the subject of

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[Approved] Minutes of SMCWG May 20, 2026

## Minutes of SMCWG May 20, 2026 These are the Minutes of the meeting described in the subject of

Jun 4

Stephen Davidson

Jun 2

Draft SMCWG agenda - Wednesday, June 3, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, June 3, 2026 at 11:00 am Eastern

unread,

Draft SMCWG agenda - Wednesday, June 3, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, June 3, 2026 at 11:00 am Eastern

Jun 2

Stephen Davidson

May 28

[Approved] Minutes of SMCWG May 6, 2026

## Minutes of SMCWG May 6, 2026 These are the Minutes of the meeting described in the subject of this

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[Approved] Minutes of SMCWG May 6, 2026

## Minutes of SMCWG May 6, 2026 These are the Minutes of the meeting described in the subject of this

May 28

Stephen Davidson

May 20

emailProtection ICA: Key and Signature Combos

Hello all: There are ~545 current active CAs in CCADB that are marked for email. I did not take into

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emailProtection ICA: Key and Signature Combos

Hello all: There are ~545 current active CAs in CCADB that are marked for email. I did not take into

May 20

Stephen Davidson

May 19

Draft SMCWG agenda - Wednesday, May 20, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, May 20, 2026 at 11:00 am Eastern

unread,

Draft SMCWG agenda - Wednesday, May 20, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, May 20, 2026 at 11:00 am Eastern

May 19

Infrastructure Bot

May 18

Weekly github digest (S/MIME Certificate Working Group)

Monday May 18, 2026 Pull requests cabforum/smime (+1/-0/💬0) 1 pull requests submitted: #304 (by

unread,

Weekly github digest (S/MIME Certificate Working Group)

Monday May 18, 2026 Pull requests cabforum/smime (+1/-0/💬0) 1 pull requests submitted: #304 (by

May 18

Stephen Davidson, … Martijn Katerbarg33

May 15

[Discussion] Ballot SMC017: Increase Minimum RSA CA Key Size

All, In https://github.com/cabforum/smime/pull/304 I've proposed SMC017v2. This PR builds on top

unread,

[Discussion] Ballot SMC017: Increase Minimum RSA CA Key Size

All, In https://github.com/cabforum/smime/pull/304 I've proposed SMC017v2. This PR builds on top

May 15

Stephen Davidson

May 7

[Approved] Minutes of SMCWG April 22, 2026

## Minutes of SMCWG April 22, 2026 These are the Minutes of the meeting described in the subject of

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[Approved] Minutes of SMCWG April 22, 2026

## Minutes of SMCWG April 22, 2026 These are the Minutes of the meeting described in the subject of

May 7

Stephen Davidson

May 6

Draft SMCWG agenda - Wednesday, May 6, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, May 6, 2026 at 11:00 am Eastern time

unread,

Draft SMCWG agenda - Wednesday, May 6, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, May 6, 2026 at 11:00 am Eastern time

May 6

Stephen Davidson

May 5

[Adopted] Ballot SMC016: Equivalence with Ballots SC096 and SC097

The Intellectual Property Review (IPR) period for Ballot SMC016 (Equivalence with Ballots SC096 and

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[Adopted] Ballot SMC016: Equivalence with Ballots SC096 and SC097

The Intellectual Property Review (IPR) period for Ballot SMC016 (Equivalence with Ballots SC096 and

May 5

Stephen Davidson

Apr 22

[Approved] Minutes of SMCWG April 8, 2026

## Minutes of SMCWG April 8, 2026 These are the Minutes of the meeting described in the subject of

unread,

[Approved] Minutes of SMCWG April 8, 2026

## Minutes of SMCWG April 8, 2026 These are the Minutes of the meeting described in the subject of

Apr 22

Stephen Davidson

Apr 22

[Approved] Minutes of SMCWG March 25, 2026

## Minutes of SMCWG March 25, 2026 These are the Minutes of the meeting described in the subject of

unread,

[Approved] Minutes of SMCWG March 25, 2026

## Minutes of SMCWG March 25, 2026 These are the Minutes of the meeting described in the subject of

Apr 22

Stephen Davidson

Apr 20

Draft SMCWG agenda - Wednesday, April 21, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, April 21, 2026 at 11:00 am Eastern

unread,

Draft SMCWG agenda - Wednesday, April 21, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, April 21, 2026 at 11:00 am Eastern

Apr 20

Stephen Davidson

Apr 7

Draft SMCWG agenda - Wednesday, April 8, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, April 8, 2026 at 11:00 am Eastern

unread,

Draft SMCWG agenda - Wednesday, April 8, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, April 8, 2026 at 11:00 am Eastern

Apr 7

Stephen Davidson, 大野文彰4

Apr 4

S/MIME by Root Program

Hi Stephen-san, Thank you for the clarification, and for pointing to the CCADB public report you used

unread,

S/MIME by Root Program

Hi Stephen-san, Thank you for the clarification, and for pointing to the CCADB public report you used

Apr 4

Stephen Davidson, … 陳立群25

Apr 1

[Discussion] Ballot SMC016: Equivalence with Ballots SC096 and SC097

NOTICE OF REVIEW PERIOD This Review Notice is sent pursuant to Section 4.1 of the CA/Browser

unread,

[Discussion] Ballot SMC016: Equivalence with Ballots SC096 and SC097

NOTICE OF REVIEW PERIOD This Review Notice is sent pursuant to Section 4.1 of the CA/Browser

Apr 1

Stephen Davidson

Mar 27

[Adopted] Ballot SMC015v2: Allow mDL for authentication of individual identity

The Intellectual Property Review (IPR) period for Ballot SMC015v2 (Allow mDL for authentication of

unread,

[Adopted] Ballot SMC015v2: Allow mDL for authentication of individual identity

The Intellectual Property Review (IPR) period for Ballot SMC015v2 (Allow mDL for authentication of

Mar 27

Stephen Davidson

Mar 25

[Approved] Minutes of SMCWG March 13, 2026 F2F #67

## Minutes of SMCWG March 13, 2026 These are the Minutes of the meeting described in the subject of

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[Approved] Minutes of SMCWG March 13, 2026 F2F #67

## Minutes of SMCWG March 13, 2026 These are the Minutes of the meeting described in the subject of

Mar 25

Stephen Davidson

Mar 25

[Approved] Minutes of SMCWG February 25, 2026

## Minutes of SMCWG February 25, 2026 These are the Minutes of the meeting described in the subject

unread,

[Approved] Minutes of SMCWG February 25, 2026

## Minutes of SMCWG February 25, 2026 These are the Minutes of the meeting described in the subject

Mar 25

Stephen Davidson

Mar 24

Existing S/MIME CAs using RSA keys less than 3072 bit

The attached shows the spread of validity periods for valid S/MIME subCAs in CCADB using RSA keys

unread,

Existing S/MIME CAs using RSA keys less than 3072 bit

The attached shows the spread of validity periods for valid S/MIME subCAs in CCADB using RSA keys

Mar 24

Stephen Davidson

Mar 20

Draft SMCWG agenda - Wednesday, March 25, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, March 25, 2026 at 11:00 am Eastern

unread,

Draft SMCWG agenda - Wednesday, March 25, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, March 25, 2026 at 11:00 am Eastern

Mar 20

Stephen Davidson

Feb 26

[Approved] Minutes of SMCWG January 28, 2026

## Minutes of SMCWG January 28, 2026 These are the Minutes of the meeting described in the subject of

unread,

[Approved] Minutes of SMCWG January 28, 2026

## Minutes of SMCWG January 28, 2026 These are the Minutes of the meeting described in the subject of

Feb 26

Stephen Davidson

Feb 26

[Approved] Minutes of SMCWG February 11, 2026

## Minutes of SMCWG February 11, 2026 These are the Minutes of the meeting described in the subject

unread,

[Approved] Minutes of SMCWG February 11, 2026

## Minutes of SMCWG February 11, 2026 These are the Minutes of the meeting described in the subject

Feb 26

Stephen Davidson, … Inigo Barreira29

Feb 25

[Discussion] Ballot SMC015v2: Allow mDL for authentication of individual identity

(Resending as the attachments had issues on first attempt) NOTICE OF REVIEW PERIOD This Review Notice

unread,

[Discussion] Ballot SMC015v2: Allow mDL for authentication of individual identity

(Resending as the attachments had issues on first attempt) NOTICE OF REVIEW PERIOD This Review Notice

Feb 25

Stephen Davidson

Feb 24

Draft SMCWG agenda - Wednesday, February 25, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, February 25, 2026 at 11:00 am

unread,

Draft SMCWG agenda - Wednesday, February 25, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, February 25, 2026 at 11:00 am

Feb 24

Roman Fischer, … 大野文彰3

Feb 12

Combined ServerAuth+CientAuth for SMTP connections

Dear Roman, I would like to agree with your concern. I support the proposal to actively engage

unread,

Combined ServerAuth+CientAuth for SMTP connections

Dear Roman, I would like to agree with your concern. I support the proposal to actively engage

Feb 12

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