gpg: Changed internal data format for Kyber.

* g10/packet.h (PKT_pubkey_enc): Add field seskey_algo.
(struct pubkey_enc_list): Ditto.
* g10/misc.c (pubkey_get_nenc): Change value for Kyber from 4 to 3.
* g10/parse-packet.c (parse_pubkeyenc): Store the Kyber algo in the
new field and adjust data.  Do not store the length byte in data[2].
* g10/build-packet.c (do_pubkey_enc): Take the session algo for Kyber
from the new field.
* g10/encrypt.c (write_pubkey_enc): Ses the seskey_algo.
* g10/mainproc.c (proc_pubkey_enc): Copy it.
* g10/pubkey-enc.c (get_it): Support Kyber decryption.

* g10/seskey.c (encode_session_key): Handle Kyber different from ECDH.
--

Having always the single byte in the packet data than to store and
retrieve it from an MPI is much easier.  Thus this patch changes the
original internal format.  With this chnages decryption of the slighly
modified test data works now. See the bug tracker for test data.

GnuPG-bug-id: 6815

1 files changed, 1 insertions, 1 deletions

diff --git a/g10/misc.c b/g10/misc.c
index ce0c04b3b..1359987d2 100644
--- a/g10/misc.c
+++ b/g10/misc.c
@@ -1786,7 +1786,7 @@ pubkey_get_nenc (pubkey_algo_t algo)
     case PUBKEY_ALGO_ECDSA:     return 0;
     case PUBKEY_ALGO_ELGAMAL:   return 2;
     case PUBKEY_ALGO_EDDSA:     return 0;
-    case PUBKEY_ALGO_KYBER:     return 4;
+    case PUBKEY_ALGO_KYBER:     return 3;
     default: return 0;
     }
 }