-----Message d'origine-----
De : [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] la part de Michael Southwell
Envoy� : samedi 9 avril 2005 00:54
� : [email protected]
Cc : [EMAIL PROTECTED]
Objet : resources rather than values in openSSL functions


Chris Snyder and I are writing a book entitled "Pro PHP Security" to be 
published by Apress.  We have written the following there:  "The openSSL 
functions tend to deal with resources, in-memory pointers to keys, 
certificates, etc, rather than the actual values themselves; even on 
export, you pass a variable to the function and the exported value is 
returned by reference. Our inference is that the authors of the module 
wished to limit the number of copies of these values in memory, both for 
performance and security reasons."  Can anyone verify whether this is 
indeed the reason, or if not, explain what the reason is?  Thanks very much 
in advance.

Michael Southwell, Vice President for Education
New York PHP
http://nyphp.org/twoday - In-depth PHP Training Courses

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