1 files changed, 9 insertions, 3 deletions
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index f4a00cdb422..a746bf74f8d 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -272,19 +272,25 @@ static PyType_Spec sha1_type_spec = {
 /*[clinic input]
 _sha1.sha1
 
-    string: object(c_default="NULL") = b''
+    data: object(c_default="NULL") = b''
     *
     usedforsecurity: bool = True
+    string as string_obj: object(c_default="NULL") = None
 
 Return a new SHA1 hash object; optionally initialized with a string.
 [clinic start generated code]*/
 
 static PyObject *
-_sha1_sha1_impl(PyObject *module, PyObject *string, int usedforsecurity)
-/*[clinic end generated code: output=6f8b3af05126e18e input=bd54b68e2bf36a8a]*/
+_sha1_sha1_impl(PyObject *module, PyObject *data, int usedforsecurity,
+                PyObject *string_obj)
+/*[clinic end generated code: output=0d453775924f88a7 input=807f25264e0ac656]*/
 {
     SHA1object *new;
     Py_buffer buf;
+    PyObject *string;
+    if (_Py_hashlib_data_argument(&string, data, string_obj) < 0) {
+        return NULL;
+    }
 
     if (string) {
         GET_BUFFER_VIEW_OR_ERROUT(string, &buf);