The X509 encode and decode routines encode and parse an
B<X509> structure, which represents an X509 certificate.
-d2i_X509() attempts to decode B<len> bytes at B<*out>. If
+d2i_X509() attempts to decode B<len> bytes at B<*in>. If
successful a pointer to the B<X509> structure is returned. If an error
occurred then B<NULL> is returned. If B<px> is not B<NULL> then the
returned structure is written to B<*px>. If B<*px> is not B<NULL>
then it is assumed that B<*px> contains a valid B<X509>
structure and an attempt is made to reuse it. If the call is
-successful B<*out> is incremented to the byte following the
+successful B<*in> is incremented to the byte following the
parsed data.
i2d_X509() encodes the structure pointed to by B<x> into DER format.