Improve documentation of ssl_tls1_3_hkdf_encode_label()
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 8725d14..ec2fe3b 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -62,6 +62,8 @@
* The label length MUST be
* <= MBEDTLS_SSL_TLS1_3_KEY_SCHEDULE_MAX_LABEL_LEN
* It is the caller's responsiblity to ensure this.
+ * All (label, label length) pairs used in TLS 1.3
+ * can be obtained via MBEDTLS_SSL_TLS1_3_LBL_WITH_LEN().
* - (ctx, clen): context + context length
* The context length MUST be
* <= MBEDTLS_SSL_TLS1_3_KEY_SCHEDULE_MAX_CONTEXT_LEN
