What Is a Pgp Key?
A PGP, or Pretty Good Privacy, key is a method of encrypting and decrypting messages. PGP provides cryptographic security in data communication. It is the most commonly used type of encryption for email communications.
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Function
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PGP keys are numerical values utilized with a cryptographic algorithm to create a specific ciphertext. A ciphertext is the result of applying an encryption algorithm to plain text.
Types
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There are two keys used with PGP encryption, the public key and the private key. The public key is published and the private key is kept secret. Anyone with your public key can encrypt a message that will be decrypted with your private key. However, only the user with the private key will be able to decrypt the message.
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Size
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The larger the key size, the more secure the encryption is. It is important to choose a key that is large enough to be secure, while small enough to be applied in a timely manner.
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