◊ About PGP

I knew this encryption software with an article about the security of E-mail.
It is said that there is a product which can be used free only in the private use.

It is said that PGP uses a public-key and a secret key.
When E-mail is sent, it enciphers by using the public-key of the receiving person,
and a receiving person decodes it with his secret key.
Therefore, you must obtain the public-key of the specific person in advance to use PGP actually.
Then, you must deliver your public-key to the specific person.
Or, a public-key is made available to the general public.
In a word, each other must use PGP.
However, there is no person using PGP in my acquaintance at present.
Because of that, it is using when a private file is enciphered and save.

Though the following is my public-key, it is shown like this by the enumeration of the character.