security-and-privacy/gnupg
security-and-privacy/gnupg
1
0
Fork 0
mirror of git://git.gnupg.org/gnupg.git synced 2025-07-03 22:56:33 +02:00
Code Activity

gpg: Pass ECDH parameters to OpenPGP smartcards

Browse source 
* g10/call-agent.c (agent_keytocard): Add arg ecdh_param_str.
* g10/keyid.c (ecdh_param_str_from_pk): New.
* g10/card-util.c (card_store_subkey): Pass ECDH params to writekey.
* g10/keygen.c (card_store_key_with_backup): Ditto.
--

Backported from 2.4 - here the gpg part.

See-commit: c03ba92576
This is related to
GnuPG-bug-id: 6378
This commit is contained in:
Werner Koch 2023-10-27 13:56:02 +02:00
parent d03d0add12
commit 92af3f88a9
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
6 changed files with 68 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

22
g10/keyid.c
View file

@ -994,3 +994,25 @@ hexkeygrip_from_pk (PKT_public_key *pk, char **r_grip)
}
return err;
}
/* Return a hexfied malloced string of the ECDH parameters for an ECDH
* key from the public key PK. Returns NULL on error. */
char *
ecdh_param_str_from_pk (PKT_public_key *pk)
{
const unsigned char *s;
unsigned int n;
if (!pk
|| pk->pubkey_algo != PUBKEY_ALGO_ECDH
|| !gcry_mpi_get_flag (pk->pkey[2], GCRYMPI_FLAG_OPAQUE)
|| !(s = gcry_mpi_get_opaque (pk->pkey[2], &n)) || !n)
{
gpg_err_set_errno (EINVAL);
return NULL; /* Invalid parameter */
}
n = (n+7)/8;
return bin2hex (s, n, NULL);
}