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common: Extend openpgp_oid_to_curve to return an abbreviated name.

* common/openpgp-oid.c (oidtable): Add column "abbr" and set them for
Brainpool.
(openpgp_oid_to_curve): Rename arg "canon" to "mode" and implement
mode 2.
--

For dual algorithms (PQC) we need shorter versions of brainpool to
avoid names which otherwise might be capped when printed.
This commit is contained in:
Werner Koch 2024-04-03 14:13:57 +02:00
parent 4b981e415f
commit 6c1dd3afd1
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2 changed files with 39 additions and 14 deletions

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@ -229,7 +229,7 @@ int openpgp_oid_is_cv448 (gcry_mpi_t a);
int openpgp_oid_is_ed448 (gcry_mpi_t a);
const char *openpgp_curve_to_oid (const char *name,
unsigned int *r_nbits, int *r_algo);
const char *openpgp_oid_to_curve (const char *oid, int canon);
const char *openpgp_oid_to_curve (const char *oid, int mode);
const char *openpgp_oid_or_name_to_curve (const char *oidname, int canon);
const char *openpgp_enum_curves (int *idxp);
const char *openpgp_is_curve_supported (const char *name,