commit fff641a273a2c7596a88a6f525dfbf29cbd6a2d8
author Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com> Wed Apr 06 09:27:18 2022 +0200
committer GitHub <noreply@github.com> Wed Apr 06 09:27:18 2022 +0200
tree 0f5c3f7a44c7371e16e96d2d032c376db6018ee9
parent cccbe0eb88c357747497730300fbbc06637827ea
parent 8583627ece29fa26c29d8aea088066a97fac7f34

Merge pull request #5695 from mprse/tls_1_3_remove_redundant_check

ssl_tls13_generate_and_write_ecdh_key_exchange(): remove redundant check

library/ssl_misc.h

diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 4964787..193f310 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2222,6 +2222,8 @@
             return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
         case PSA_ERROR_BAD_STATE:
             return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+        case PSA_ERROR_BUFFER_TOO_SMALL:
+            return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
         default:
             return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
     }

library/ssl_tls13_client.c

diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 3bb308c..a9b9b03 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -262,12 +262,6 @@
 
     }
 
-    if( own_pubkey_len > (size_t)( end - buf ) )
-    {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "No space in the buffer for ECDH public key." ) );
-        return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
-    }
-
     *out_len = own_pubkey_len;
 
     return( 0 );