5. IANA 考量
对于第 2 节中定义的每个 private-key information content type, IANA 已分配 Object Identifier (OID). 这些 content types 的 OID 已在 "SMI Security for S/MIME CMS Content Type (1.2.840.113549.1.9.16.1)" 注册表 [IANA-CMS-CTS] 中分配如下:
+=========+==========================+===========+
| Decimal | Description | Reference |
+=========+==========================+===========+
| 52 | id-ct-privateKeyInfo | RFC 9939 |
+---------+--------------------------+-----------+
| 53 | id-ct-encrPrivateKeyInfo | RFC 9939 |
+---------+--------------------------+-----------+
表 1
对于第 3 节中的 ASN.1 module, IANA 已为 module identifier 分配 OID. 该 module 的 OID 已在 "SMI Security for S/MIME Module Identifier (1.2.840.113549.1.9.16.0)" 注册表 [IANA-SMIME-MODS] 中分配如下:
+=========+=========================+===========+
| Decimal | Description | Reference |
+=========+=========================+===========+
| 85 | id-mod-pkcs8ContentType | RFC 9939 |
+---------+-------------------------+-----------+
表 2
IANA 已更新 "Media Types" 注册表中的 application/cms 注册项, 方法是在 "Interoperability considerations" 部分以及定义 Inner Content Types (ICTs) 的 RFC 列表中添加 RFC 9939 (见 "Optional parameters" 部分), 并向 ICTs 列表添加以下值:
- privateKeyInfo
- encrPrivateKeyInfo
IANA 还更新了 application/cms 项中的 "Security considerations" 部分, 如下所示:
+==========+============================================+
| RFC | CMS Protecting Content Type and Algorithms |
+==========+============================================+
| RFC 9939 | privateKeyInfo and encrPrivateKeyInfo |
+----------+--------------------------------------------+
表 3