Key Exchange (KEX) Method Updates and Recommendations for Secure Shell (SSH)
draft-ietf-curdle-ssh-kex-sha2-08
Internet Engineering Task Force M. Baushke
Internet-Draft Juniper Networks, Inc.
Updates: 4250 (if approved) April 15, 2017
Intended status: Standards Track
Expires: October 17, 2017
Key Exchange (KEX) Method Updates and Recommendations for Secure Shell
(SSH)
draft-ietf-curdle-ssh-kex-sha2-08
Abstract
This document is intended to update the recommended set of key
exchange methods for use in the Secure Shell (SSH) protocol to meet
evolving needs for stronger security. This document updates RFC
4250.
Status of This Memo
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This Internet-Draft will expire on October 17, 2017.
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Internet-Draft KEX Method Updates/Recommendations for SSH April 2017
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Table of Contents
1. Overview and Rationale . . . . . . . . . . . . . . . . . . . 3
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3
3. Key Exchange Methods . . . . . . . . . . . . . . . . . . . . 3
3.1. curve25519-sha256 . . . . . . . . . . . . . . . . . . . . 4
3.2. diffie-hellman-group-exchange-sha1 . . . . . . . . . . . 4
3.3. diffie-hellman-group-exchange-sha256 . . . . . . . . . . 4
3.4. diffie-hellman-group1-sha1 . . . . . . . . . . . . . . . 4
3.5. diffie-hellman-group14-sha1 . . . . . . . . . . . . . . . 4
3.6. diffie-hellman-group14-sha256 . . . . . . . . . . . . . . 5
3.7. diffie-hellman-group16-sha512 . . . . . . . . . . . . . . 5
3.8. ecdh-sha2-nistp256 . . . . . . . . . . . . . . . . . . . 5
3.9. ecdh-sha2-nistp384 . . . . . . . . . . . . . . . . . . . 5
3.10. gss-gex-sha1-* . . . . . . . . . . . . . . . . . . . . . 5
3.11. gss-group1-sha1-* . . . . . . . . . . . . . . . . . . . . 6
3.12. gss-group14-sha1-* . . . . . . . . . . . . . . . . . . . 6
3.13. gss-group14-sha256-* . . . . . . . . . . . . . . . . . . 6
3.14. gss-group16-sha512-* . . . . . . . . . . . . . . . . . . 6
3.15. rsa1024-sha1 . . . . . . . . . . . . . . . . . . . . . . 6
4. Summary Guidance for Key Exchange Method Names . . . . . . . 6
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 8
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 9
8.1. Normative References . . . . . . . . . . . . . . . . . . 9
8.2. Informative References . . . . . . . . . . . . . . . . . 10
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 11
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