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common: New helper functions for OpenPGP curve OIDs.

* common/openpgp-oid.c (openpgp_oidbuf_to_str): Factor most code out
to ...
(openpgp_oidbuf_to_str): new.
(openpgp_oidbuf_is_ed25519): New.
(openpgp_oidbuf_is_cv25519): New.
--

At some places it is more convenient (and faster) to directly work on
buffers and avoid the way via opaque MPIs.  These 3 new functions
allow for that.

Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit 4a1558d0c7)
This commit is contained in:
Werner Koch 2019-01-29 18:19:05 +01:00
parent 9fd6ba268f
commit dddbb26155
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
3 changed files with 66 additions and 34 deletions

View file

@ -219,8 +219,11 @@ size_t percent_unescape_inplace (char *string, int nulrepl);
/*-- openpgp-oid.c --*/
gpg_error_t openpgp_oid_from_str (const char *string, gcry_mpi_t *r_mpi);
char *openpgp_oidbuf_to_str (const unsigned char *buf, size_t len);
char *openpgp_oid_to_str (gcry_mpi_t a);
int openpgp_oidbuf_is_ed25519 (const void *buf, size_t len);
int openpgp_oid_is_ed25519 (gcry_mpi_t a);
int openpgp_oidbuf_is_cv25519 (const void *buf, size_t len);
int openpgp_oid_is_cv25519 (gcry_mpi_t a);
const char *openpgp_curve_to_oid (const char *name, unsigned int *r_nbits);
const char *openpgp_oid_to_curve (const char *oid, int canon);