Issue #18405: Improve the entropy of crypt.mksalt().
diff --git a/Lib/crypt.py b/Lib/crypt.py
index b90c81c..49ab96e 100644
--- a/Lib/crypt.py
+++ b/Lib/crypt.py
@@ -28,7 +28,7 @@
     if method is None:
         method = methods[0]
     s = '${}$'.format(method.ident) if method.ident else ''
-    s += ''.join(_sr.sample(_saltchars, method.salt_chars))
+    s += ''.join(_sr.choice(_saltchars) for char in range(method.salt_chars))
     return s