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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

Jul 19

[Approved] Minutes of SMCWG July 1, 2026

## Minutes of SMCWG July 01, 2026 These are the Minutes of the meeting described in the subject of

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[Approved] Minutes of SMCWG July 1, 2026

## Minutes of SMCWG July 01, 2026 These are the Minutes of the meeting described in the subject of

Jul 19

Stephen Davidson

Jul 12

Draft SMCWG agenda - Wednesday, July 15, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, July 15, 2026 at 11:00 am Eastern

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Draft SMCWG agenda - Wednesday, July 15, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, July 15, 2026 at 11:00 am Eastern

Jul 12

Infrastructure Bot

Jul 5

Weekly github digest (S/MIME Certificate Working Group)

Sunday July 05, 2026 Issues cabforum/smime (+0/-0/💬1) 1 issues received 1 new comments: #301 Apple

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Weekly github digest (S/MIME Certificate Working Group)

Sunday July 05, 2026 Issues cabforum/smime (+0/-0/💬1) 1 issues received 1 new comments: #301 Apple

Jul 5

Stephen Davidson

Jul 3

[Approved] Minutes of SMCWG June 17, 2026

## Minutes of SMCWG June 17, 2026 These are the Minutes of the meeting described in the subject of

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[Approved] Minutes of SMCWG June 17, 2026

## Minutes of SMCWG June 17, 2026 These are the Minutes of the meeting described in the subject of

Jul 3

Stephen Davidson

Jul 3

[Approved] Minutes of SMCWG June 3, 2026

## Minutes of SMCWG June 3, 2026 These are the Minutes of the meeting described in the subject of

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[Approved] Minutes of SMCWG June 3, 2026

## Minutes of SMCWG June 3, 2026 These are the Minutes of the meeting described in the subject of

Jul 3

Stephen Davidson, … Lahtiharju, Pekka27

Jul 1

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

As noted on the call today, due to mail delivery issues some votes were not counted despite having

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

As noted on the call today, due to mail delivery issues some votes were not counted despite having

Jul 1

Stephen Davidson

Jun 30

Draft SMCWG agenda - Wednesday, July 1, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, July 1, 2026 at 11:00 am Eastern

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Draft SMCWG agenda - Wednesday, July 1, 2026

S/MIME Certificate Working Group Draft SMCWG agenda - Wednesday, July 1, 2026 at 11:00 am Eastern

Jun 30

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

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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

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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

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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

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[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

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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

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[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

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[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

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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

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[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

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[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

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[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

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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

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