1 files changed, 12 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/bindings/openssl/_conditional.py b/src/cryptography/hazmat/bindings/openssl/_conditional.py
index 78b9b279..219f163e 100644
--- a/src/cryptography/hazmat/bindings/openssl/_conditional.py
+++ b/src/cryptography/hazmat/bindings/openssl/_conditional.py
@@ -290,6 +290,17 @@ def cryptography_has_cipher_details():
     ]
 
 
+def cryptography_has_tlsv13():
+    return [
+        "SSL_OP_NO_TLSv1_3",
+        "SSL_VERIFY_POST_HANDSHAKE",
+        "SSL_CTX_set_ciphersuites",
+        "SSL_verify_client_post_handshake",
+        "SSL_CTX_set_post_handshake_auth",
+        "SSL_set_post_handshake_auth",
+    ]
+
+
 # This is a mapping of
 # {condition: function-returning-names-dependent-on-that-condition} so we can
 # loop over them and delete unsupported names at runtime. It will be removed
@@ -351,4 +362,5 @@ CONDITIONAL_NAMES = {
     "Cryptography_HAS_CUSTOM_EXT": cryptography_has_custom_ext,
     "Cryptography_HAS_OPENSSL_CLEANUP": cryptography_has_openssl_cleanup,
     "Cryptography_HAS_CIPHER_DETAILS": cryptography_has_cipher_details,
+    "Cryptography_HAS_TLSv1_3": cryptography_has_tlsv13,
 }