commit 357b78e42c2e5ce6cd3f56e3aac2bd58669ac814
author Bence Szépkúti <bence.szepkuti@arm.com> Tue Nov 09 13:17:17 2021 +0100
committer Bence Szépkúti <bence.szepkuti@arm.com> Wed Nov 17 18:06:04 2021 +0100
tree 6909d1a3b04360e036e4430a3ebaf30c4ef065a1
parent b78618e9a3497f7775c33b4d8577c0c229e65783

Indicate if we know that a nonce length is invalid

This restores the behaviour found in the previously released versions
and development_2.x.

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>

library/psa_crypto.c

diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 7591b6b..4677ea9 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -3658,13 +3658,13 @@
         case PSA_ALG_CHACHA20_POLY1305:
             if( nonce_length == 12 )
                 return( PSA_SUCCESS );
-            break;
+            return( PSA_ERROR_NOT_SUPPORTED );
 #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */
         default:
-            break;
+            return( PSA_ERROR_NOT_SUPPORTED );
     }
 
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return( PSA_ERROR_INVALID_ARGUMENT );
 }
 
 psa_status_t psa_aead_encrypt( mbedtls_svc_key_id_t key,