tags:

views:

39

answers:

2
Q: 

PHP Captcha: What is a "private key" and "public key"?

What is the difference between private key and public key and how is it used?

A: 

Normally private and public key are terms that belong to assymetric encryption algorithms. I don't see a connection to CAPTCHA or PHP5 in this special case.

Aurril  2010-05-19 06:47:18
+1  A: 

Public-key cryptography You create a key-pair (public and private) the receivers public key is used to encrypt messages. The private key of the receiver is used to decrypt the this message.

stacker  2010-05-19 06:49:17

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