Internet Engineering Task Force (IETF) O. Gudmundsson
Request for Comments: 7218 Shinkuro Inc.
Updates: 6698 April 2014
Category: Standards Track
ISSN: 2070-1721
Internet Engineering Task Force (IETF) O. Gudmundsson
Request for Comments: 7218 Shinkuro Inc.
Updates: 6698 April 2014
Category: Standards Track
ISSN: 2070-1721
Adding Acronyms to Simplify Conversations about DNS-Based Authentication of Named Entities (DANE)
添加首字母缩略词以简化有关基于DNS的命名实体身份验证（DANE）的对话
Abstract
摘要
Experience has shown that people get confused when discussing the three numeric fields of the TLSA record. This document specifies descriptive acronyms for the three numeric fields in TLSA records. This document updates the format of the IANA registry created by RFC 6698.
经验表明，人们在讨论TLSA记录的三个数字字段时会感到困惑。本文档为TLSA记录中的三个数字字段指定了描述性首字母缩略词。本文档更新了RFC 6698创建的IANA注册表的格式。
Status of This Memo
关于下段备忘
This is an Internet Standards Track document.
这是一份互联网标准跟踪文件。
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
本文件是互联网工程任务组（IETF）的产品。它代表了IETF社区的共识。它已经接受了公众审查，并已被互联网工程指导小组（IESG）批准出版。有关互联网标准的更多信息，请参见RFC 5741第2节。
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7218.
有关本文件当前状态、任何勘误表以及如何提供反馈的信息，请访问http://www.rfc-editor.org/info/rfc7218.
Copyright Notice
版权公告
Copyright (c) 2014 IETF Trust and the persons identified as the document authors. All rights reserved.
版权所有（c）2014 IETF信托基金和确定为文件作者的人员。版权所有。
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
本文件受BCP 78和IETF信托有关IETF文件的法律规定的约束(http://trustee.ietf.org/license-info)自本文件出版之日起生效。请仔细阅读这些文件，因为它们描述了您对本文件的权利和限制。从本文件中提取的代码组件必须包括信托法律条款第4.e节中所述的简化BSD许可证文本，并提供简化BSD许可证中所述的无担保。
Table of Contents
目录
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 2
2.1. TLSA Certificate Usages Registry . . . . . . . . . . . . 3
2.2. TLSA Selectors . . . . . . . . . . . . . . . . . . . . . 3
2.3. TLSA Matching Types . . . . . . . . . . . . . . . . . . . 4
3. Examples of Usage . . . . . . . . . . . . . . . . . . . . . . 4
3.1. TLSA Records Using/Displaying the Acronyms . . . . . . . 4
3.2. Acronym Use in a Specification Example . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.1. Normative References . . . . . . . . . . . . . . . . . . 5
6.2. Informative References . . . . . . . . . . . . . . . . . 5
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 2
2.1. TLSA Certificate Usages Registry . . . . . . . . . . . . 3
2.2. TLSA Selectors . . . . . . . . . . . . . . . . . . . . . 3
2.3. TLSA Matching Types . . . . . . . . . . . . . . . . . . . 4
3. Examples of Usage . . . . . . . . . . . . . . . . . . . . . . 4
3.1. TLSA Records Using/Displaying the Acronyms . . . . . . . 4
3.2. Acronym Use in a Specification Example . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.1. Normative References . . . . . . . . . . . . . . . . . . 5
6.2. Informative References . . . . . . . . . . . . . . . . . 5
During discussions on how to add DNS-Based Authentication of Named Entities (DANE) [RFC6698] technology to new protocols and services, people were repeatedly confused as to what the numeric values stood for and even the order of the fields of a TLSA record (note that TLSA is not an acronym but a name). This document updates the IANA registry definition for the TLSA record to add a column containing an acronym for each specified field, in order to reduce confusion. This document does not change the DANE protocol in any way.
在讨论如何将基于DNS的命名实体身份验证（DANE）[RFC6698]技术添加到新协议和服务中时，人们反复混淆数字值代表什么，甚至TLSA记录字段的顺序（请注意，TLSA不是首字母缩略词，而是名称）。本文档更新了TLSA记录的IANA注册表定义，以添加一列，其中包含每个指定字段的首字母缩略词，以减少混淆。本文件不会以任何方式更改丹麦协议。
It is expected that DANE parsers in applications and DNS software can adopt parsing the acronyms for each field.
预计应用程序和DNS软件中的DANE解析器可以采用解析每个字段的首字母缩略词。
This document applies to the "DNS-Based Authentication of Named Entities (DANE) Parameters" registry located at <http://www.iana.org/ assignments/dane-parameters>. IANA has added a column with an acronym to each of the sub-registries.
本文件适用于位于以下地址的“基于DNS的命名实体身份验证（DANE）参数”注册表：<http://www.iana.org/ 分配/dane参数>。IANA在每个子注册中心添加了一个带有首字母缩略词的列。
[RFC6698] and this document are the referenced documents for the three sub-registries.
[RFC6698]和本文件是三个子登记处的参考文件。
As these acronyms are offered for human consumption, case does not matter; it is expected that software that parses TLSA records will handle upper-, mixed-, or lower-case characters as input.
由于这些首字母缩略词是供人类使用的，所以情况并不重要；预计解析TLSA记录的软件将处理大写、混合或小写字符作为输入。
The reference for this registry has been updated to include both [RFC6698] and this document.
此注册表的参考已更新，包括[RFC6698]和本文档。
+-------+----------+--------------------------------+-------------+
| Value | Acronym | Short Description | Reference |
+-------+----------+--------------------------------+-------------+
| 0 | PKIX-TA | CA constraint | [RFC6698] |
| 1 | PKIX-EE | Service certificate constraint | [RFC6698] |
| 2 | DANE-TA | Trust anchor assertion | [RFC6698] |
| 3 | DANE-EE | Domain-issued certificate | [RFC6698] |
| 4-254 | | Unassigned | |
| 255 | PrivCert | Reserved for Private Use | [RFC6698] |
+-------+----------+--------------------------------+-------------+
+-------+----------+--------------------------------+-------------+
| Value | Acronym | Short Description | Reference |
+-------+----------+--------------------------------+-------------+
| 0 | PKIX-TA | CA constraint | [RFC6698] |
| 1 | PKIX-EE | Service certificate constraint | [RFC6698] |
| 2 | DANE-TA | Trust anchor assertion | [RFC6698] |
| 3 | DANE-EE | Domain-issued certificate | [RFC6698] |
| 4-254 | | Unassigned | |
| 255 | PrivCert | Reserved for Private Use | [RFC6698] |
+-------+----------+--------------------------------+-------------+
Table 1: TLSA Certificate Usages
表1:TLSA证书使用
The reference for this registry has been updated to include both [RFC6698] and this document.
此注册表的参考已更新，包括[RFC6698]和本文档。
+-------+---------+--------------------------+-------------+
| Value | Acronym | Short Description | Reference |
+-------+---------+--------------------------+-------------+
| 0 | Cert | Full certificate | [RFC6698] |
| 1 | SPKI | SubjectPublicKeyInfo | [RFC6698] |
| 2-254 | | Unassigned | |
| 255 | PrivSel | Reserved for Private Use | [RFC6698] |
+-------+---------+--------------------------+-------------+
+-------+---------+--------------------------+-------------+
| Value | Acronym | Short Description | Reference |
+-------+---------+--------------------------+-------------+
| 0 | Cert | Full certificate | [RFC6698] |
| 1 | SPKI | SubjectPublicKeyInfo | [RFC6698] |
| 2-254 | | Unassigned | |
| 255 | PrivSel | Reserved for Private Use | [RFC6698] |
+-------+---------+--------------------------+-------------+
Table 2: TLSA Selectors
表2:TLSA选择器
The reference for this registry has been updated to include both [RFC6698] and this document.
此注册表的参考已更新，包括[RFC6698]和本文档。
+-------+-----------+--------------------------+-------------+
| Value | Acronym | Short Description | Reference |
+-------+-----------+--------------------------+-------------+
| 0 | Full | No hash used | [RFC6698] |
| 1 | SHA2-256 | 256 bit hash by SHA2 | [RFC6234] |
| 2 | SHA2-512 | 512 bit hash by SHA2 | [RFC6234] |
| 3-254 | | Unassigned | |
| 255 | PrivMatch | Reserved for Private Use | [RFC6698] |
+-------+-----------+--------------------------+-------------+
+-------+-----------+--------------------------+-------------+
| Value | Acronym | Short Description | Reference |
+-------+-----------+--------------------------+-------------+
| 0 | Full | No hash used | [RFC6698] |
| 1 | SHA2-256 | 256 bit hash by SHA2 | [RFC6234] |
| 2 | SHA2-512 | 512 bit hash by SHA2 | [RFC6234] |
| 3-254 | | Unassigned | |
| 255 | PrivMatch | Reserved for Private Use | [RFC6698] |
+-------+-----------+--------------------------+-------------+
Table 3: TLSA Matching Types
表3：TLSA匹配类型
Two examples are described below.
下面描述两个示例。
_666._tcp.first.example. TLSA PKIX-TA CERT SHA2-512 {blob}
_666._tcp.second.example. TLSA DANE-TA SPKI SHA2-256 {blob}
_666._tcp.first.example. TLSA PKIX-TA CERT SHA2-512 {blob}
_666._tcp.second.example. TLSA DANE-TA SPKI SHA2-256 {blob}
Protocol FOO only allows TLSA records using PKIX-EE and DANE-EE, with selector SPKI, and using SHA2-512.
FOO协议仅允许使用PKIX-EE和DANE-EE、选择器SPKI和SHA2-512的TLSA记录。
This document only changes registry fields and does not change the behavior of any protocol. The hope is to reduce confusion, which would lead to better specification and operations.
本文档仅更改注册表字段，不更改任何协议的行为。希望是减少混乱，这将导致更好的规范和操作。
Scott Schmit offered really good suggestions to decrease the possibility of confusion. Viktor Dukhovni provided comments from the expert point of view. Jim Schaad, Wes Hardaker, and Paul Hoffman provided feedback during WGLC. Dan Romascanu and Tobias Gondrom pointed out a few defects during the IESG last call.
斯科特·施密特（Scott Schmit）提出了非常好的建议，以减少混乱的可能性。维克托·杜霍夫尼从专家的角度提出了意见。Jim Schaad、Wes Hardaker和Paul Hoffman在WGLC期间提供了反馈。Dan Romascanu和Tobias Gondrom在IESG上次通话中指出了一些缺陷。
[RFC6698] Hoffman, P. and J. Schlyter, "The DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS) Protocol: TLSA", RFC 6698, August 2012.
[RFC6698]Hoffman，P.和J.Schlyter，“基于DNS的命名实体认证（DANE）传输层安全（TLS）协议：TLSA”，RFC 6698，2012年8月。
[RFC6234] Eastlake, D. and T. Hansen, "US Secure Hash Algorithms (SHA and SHA-based HMAC and HKDF)", RFC 6234, May 2011.
[RFC6234]Eastlake，D.和T.Hansen，“美国安全哈希算法（基于SHA和SHA的HMAC和HKDF）”，RFC 6234，2011年5月。
Author's Address
作者地址
Olafur Gudmundsson Shinkuro Inc. 4922 Fairmont Av, Suite 250 Bethesda, MD 20814 USA
Olafur Gudmundsson Shinkuro Inc.美国马里兰州贝塞斯达费尔蒙特大道4922号250室20814
EMail: ogud@ogud.com
EMail: ogud@ogud.com