Due to the encryption, all messages will probably take a lot. The program PGP uses encryption algorithms to encrypt the message is then encrypted using the public key used to encrypt the key, shorter than the entire message. Both the news and the short key is sent to the recipient. User private key of the recipient to decrypt the key, then use a short key to decode the message.PGP public key of the two versions is in the Rivest-Shamir-Adleman (RSA) and RSA that PGP version Diffie-Hellman must pay for a license to use the RSA encryption algorithm IDEA to create a short key for all the news and RSA to encrypt the key using Diffie-Hellman version short algorithm CAST for a short key to encrypt a message and a encrypting algorithm key Diffie-Hellman short.For digital signature PGP uses a powerful algorithm to create a hash (or mathematical summary) from the user names and other information signature. This hash code is encrypted with the sender's private key, the recipient uses the sender's public key to decrypt the hash code, hash code if it meets that sends the digital signature for the message, then the recipient is confident that the message arrived safely from a specific sender. RSA version of PGP using the MD5 algorithm, to create a hash code of the Diffie-Hellman version of PGP using the SHA-1 algorithm to generate a hash code.In order to use PGP, you must download or purchase the program and install it on your computer. Normally, the program will have a user interface that works with your e-mail program you may need to register a public key to your PGP program provide you with hosting public-key, so the people who exchanged news with the public key you can.You can use PGP?Start first. The Government of the United States restrict the export of PGP Technology, however in today's email encryption, PGP can be exchanged with users outside of the u.s. If you have a valid version of the international version of PGP, both parties have the same version of the security in the country, which is not the same as most other encryption products.A version of PGP has many Add-ons can be purchased that allow for consistent revert for a newer version of RSA with older versions. However, the version of PGP is not Diffie-Hellman and RSA are working together, because it uses a different algorithm.
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