Nudge people towards better hashes in a few places (#538)
diff --git a/doc/api/crypto.rst b/doc/api/crypto.rst
index 6276bc2..cac9dd9 100644
--- a/doc/api/crypto.rst
+++ b/doc/api/crypto.rst
@@ -127,7 +127,7 @@
*key* is a :py:class:`PKey` instance. *data* is a ``str`` instance.
*digest* is a ``str`` naming a supported message digest type, for example
- :py:const:`sha1`.
+ :py:const:`b"sha256"`.
.. versionadded:: 0.11
@@ -140,7 +140,7 @@
key which generated the signature. *signature* is a *str* instance giving
the signature itself. *data* is a *str* instance giving the data to which
the signature applies. *digest* is a *str* instance naming the message
- digest type of the signature, for example :py:const:`sha1`.
+ digest type of the signature, for example :py:const:`b"sha256"`.
.. versionadded:: 0.11