commit 0fa8ce3498667c3a363b75fc89bf6176fd44477c
author Neil Armstrong <narmstrong@baylibre.com> Tue May 17 14:42:57 2022 +0200
committer Neil Armstrong <narmstrong@baylibre.com> Wed May 18 13:19:29 2022 +0200
tree 5752747f6dbbd482d04121fbec022cf5abf0ec8f
parent b818e16b2903bf0e56f10e89ae2afac40aa4675e

TLS 1.3 only have AEAD ciphers, drop the PSA_ALG_IS_AEAD() check in mbedtls_ssl_tls13_get_cipher_key_info()

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

library/ssl_tls13_keys.c

diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 15bf947..f3437a3 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -1210,10 +1210,8 @@
 
     *key_len = PSA_BITS_TO_BYTES( key_bits );
 
-    if( PSA_ALG_IS_AEAD( alg ) )
-        *iv_len = 12;
-    else
-        *iv_len = PSA_CIPHER_IV_LENGTH( key_type, alg );
+    /* TLS 1.3 only have AEAD ciphers, IV length is unconditionally 12 bytes */
+    *iv_len = 12;
 
     return 0;
 }