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-rw-r--r--src/lib/tls/lib_tls.dox11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/lib/tls/lib_tls.dox b/src/lib/tls/lib_tls.dox
index 9558687f66..f0dba269e8 100644
--- a/src/lib/tls/lib_tls.dox
+++ b/src/lib/tls/lib_tls.dox
@@ -1,4 +1,13 @@
/**
@dir /lib/tls
-@brief lib/tls
+@brief lib/tls: TLS library wrappers
+
+This module has compatibility wrappers around the library (NSS or OpenSSL,
+depending on configuration) that Tor uses to implement the TLS link security
+protocol.
+
+It also implements the logic for some legacy TLS protocol usage we used to
+support in old versions of Tor, involving conditional delivery of certificate
+chains (v1 link protocol) and conditional renegotiation (v2 link protocol).
+
**/