Maniphest T2349

Composing a private key from raw key material
Open, WishlistPublic
Actions

Assigned To
None
Authored By
• gniibe
May 10 2016, 2:16 PM
Tags
Subscribers
• gniibe
matheusmoreira

Description

It is better for libgcrypt to support API to compose a private key from raw key
material (by adding some information like appropriate flags, etc.).
This is useful to recover the key from external process, like from paper, from
smartcard (if it is possible to read out the raw key material), etc.

Related Objects
Search...

Event Timeline

• gniibe added projects: Feature Request, libgcrypt.May 10 2016, 2:16 PM
• gniibe added a subscriber: • gniibe.
• gniibe added a comment.May 10 2016, 2:29 PM

This will be useful for GnuPG itself. For example, currently in
gnupg/agent/command-ssh.c, we have a function ssh_receive_key which compose a
private key from 'ssh-add'. With this API, it will be cleaned up.

marcus added a parent task: T1734: [SUGGESTION] Implement a function to re-generate public keys and(!) "stubs" from private keys stored on smartcard only.Jul 20 2017, 9:15 PM
• gniibe added a comment.Nov 1 2017, 12:52 AM

How about adding support with private in keyparam?

  • (genkey(rsa(nbit 2048)(d xxxx)(p xxxx)(q xxxx)(u xxxx))) ; Only p and q, is OK
  • (genkey(ecc(curve cv25519)(flags djb-tweak comp)(d xxx)))
matheusmoreira added a subscriber: matheusmoreira.May 9 2019, 10:05 PM