Supported Unsupported Key Algorithms

Yishi Lin edited this page Sep 30, 2018 · 4 revisions

This page summarizes key algorithms that are supported/unsupported. Tricks about debugging key-related issues are also documented here.

Feel free to edit this page or fire issues about your suggestions/experiences.

SSH key algorithms

Supported ones

  • RSA2048
  • ...

Unsupported ones

  • ED25519
  • ...

Other tips

Key format

It is recommended to use more compatible PEM format, not the newer OpenSSH format.

Related issues:

  • It should also be recommended that people store their keys in the more compatible PEM format, not the newer openssh format (i.e. to not use the -o flag when using ssh-keygen). (Issue205 @savyajha)

  • Keys starting with -----BEGIN OPENSSH PRIVATE KEY----- may not be supported. (Issue218 @maximbaz)

PGP key algorithms

Supported ones

  • RSA4096
  • ...

Unsupported ones

  • ED25519
  • ...
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