Improve comments explaining legacy_methods_compression handling
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 27235a7..9c949bd 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -1355,17 +1355,16 @@
* compression methods and the length of the extensions.
*
* cipher_suites cipher_suites_len bytes
- * legacy_compression_methods 2 bytes
- * extensions_len 2 bytes
+ * legacy_compression_methods length 1 byte
*/
- MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, cipher_suites_len + 2 + 2);
+ MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, cipher_suites_len + 1);
p += cipher_suites_len;
cipher_suites_end = p;
/* Check if we have enough data for legacy_compression_methods
- * and a length byte.
+ * and the length of the extensions (2 bytes).
*/
- MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 1 + p[0]);
+ MBEDTLS_SSL_CHK_BUF_READ_PTR(p + 1, end, p[0] + 2);
/*
* Search for the supported versions extension and parse it to determine