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-rw-r--r--docs/x509/reference.rst9
1 files changed, 7 insertions, 2 deletions
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index ef734f88..07a692a8 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -462,8 +462,13 @@ X.509 Certificate Object
certificate validation is a complex problem that involves much more
than just signature checks.
- An example on how to check if a certificate signature is correct with a method
- on the public key (this does not mean that the cert should be trusted):
+ To validate the signature on a certificate you can do the following.
+ Note: This only verifies that the certificate was signed with the
+ private key associated with the public key provided and does not
+ perform any of the other checks needed for secure certificate
+ validation. Additionally, this example will only work for RSA public
+ keys with ``PKCS1v15`` signatures, and so it can't be used for general
+ purpose signature verification.
.. doctest::