[14] [CITE@en[RFC 2480 - Gateways and MIME Security Multiparts]], [TIME[2021-01-31T16:16:40.000Z]], [TIME[2021-03-26T05:53:47.777Z]] <https://tools.ietf.org/html/rfc2480>

[1]
[CITE[S/Mime and PGP Products and Interoperability]] ([TIME[1998-11-11 03:18:36 +09:00]] 版) <http://www.strom.com/places/smime.html>

[2] [CITE@en[RFC 7281 - Authentication-Results Registration for S/MIME Signature Verification]]
( ([TIME[2014-09-28 07:34:00 +09:00]] 版))
<https://tools.ietf.org/html/rfc7281>


[3] [CITE@en[RFC 7114 - Creation of a Registry for smime-type Parameter Values]]
( ([TIME[2014-09-07 10:11:37 +09:00]] 版))
<https://tools.ietf.org/html/rfc7114>

[4] [CITE@en[RFC 7107 - Object Identifier Registry for the S/MIME Mail Security Working Group]]
( ([TIME[2014-08-04 13:39:44 +09:00]] 版))
<https://tools.ietf.org/html/rfc7107>

[5] [CITE[Secure MIME Datasheet]]
([TIME[2015-04-06 17:37:31 +09:00]] 版)
<http://web.archive.org/web/19970709141721/http://home.netscape.com/assist/security/smime/datasheet.html>

[6] [CITE@en[RFC 7508 - Securing Header Fields with S/MIME]]
([TIME[2015-04-23 14:03:12 +09:00]] 版)
<https://tools.ietf.org/html/rfc7508>

[7] [CITE@en[RFC 7107 - Object Identifier Registry for the S/MIME Mail Security Working Group]]
( ([TIME[2014-01-25 11:12:24 +09:00]] 版))
<http://tools.ietf.org/html/rfc7107>

[FIG(quote)[
[FIGCAPTION[
[8] [CITE@ja[OCNから配信するメールにおけるセキュリティ対策について | OCN]]
([TIME[2015-12-24 23:05:51 +09:00]] 版)
<http://www.ocn.ne.jp/info/announce/2012/02/21_1.html>
]FIGCAPTION]

> OCNでは、送信するメールにシマンテック社*2発行の電子証明書を添付し、電子的に封(署名)をします。
> メールソフトによっては、電子署名が「smime.p7s」という添付ファイルとして表示されることがあります。

]FIG]


[9] [CITE@en[RFC 4262 - X.509 Certificate Extension for Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities]]
([TIME[2016-07-03 21:18:04 +09:00]])
<https://tools.ietf.org/html/rfc4262>

[10] [CITE@ja[自堕落な技術者の日記 : S/MIME署名/暗号メール機能が最強だと思うOutlook Expressとのお別れ - livedoor Blog(ブログ)]]
([TIME[2016-12-21 22:31:34 +09:00]])
<http://blog.livedoor.jp/k_urushima/archives/1729954.html>

[11] [CITE@en[RFC 8162 - Using Secure DNS to Associate Certificates with Domain Names for S/MIME]]
([TIME[2017-06-01 08:15:21 +09:00]])
<https://tools.ietf.org/html/rfc8162>

[FIG(quote)[
[FIGCAPTION[
[12] [CITE@en[RFC 4119 - A Presence-based GEOPRIV Location Object Format]]
([TIME[2018-02-11 21:10:31 +09:00]])
<https://tools.ietf.org/html/rfc4119>
]FIGCAPTION]

>  all PIDF implementations that
>    support the XML Schema extensions for location information described
>    in this document MUST support S/MIME; in particular, they MUST
>    support the CMS '''['''6''']''' EnvelopedData and SignedData content types, which
>    are used for encryption and digital signatures, respectively.

]FIG]


[13] [CITE@ja[OpenPGPとS/MIMEに脆弱性、適切な実装をしていないクライアントが原因 | スラド セキュリティ]]
([TIME[2018-05-16 20:30:54 +09:00]])
<https://security.srad.jp/story/18/05/16/074217/>