GPG (GNU Privacy Guard) is an asymmetric sign and encryption system mainly used with email. Using GPG you can make sure the messages you send to me have not been modified and hide their content from unauthorized readers. Send me messages using this key if you feel their content is confidential (passwords, financial data, etc.).
You can read an introduction to asymmetric encryption systems and how to use GPG at Mozilla Hispano doc (es).
My public GPG key is available from hkp://minsky.surfnet.nl keyserver. It’s fingerprint is:
5BFD B5E6 0986 A7AC 45AF 3F6A 2907 495C C794 5977