Understanding PGP Encryption
Pretty Good Privacy (PGP) is a cryptographic protocol that provides authentication and encryption for data communication. It utilizes public-key cryptography, meaning it employs a pair of keys: a public key and a private key. The public key can be shared freely, and it's used to encrypt messages intended for the owner of the accompanying private key. Only the holder of the private key, using the correct passphrase, can decrypt those messages. This system ensures confidentiality and authenticity.
Key Components of PGP
- Public Key: Shared widely; used for encryption and signature verification.
- Private Key: Kept secret; used for decryption and signature creation.
- Passphrase: A strong password protecting your private key.
- Digital Signatures: Verify the authenticity and integrity of a message. Prevents tampering.
- Key Management: The process of securely handling and maintaining your keys.
Why Use PGP?
- Confidentiality: Ensures only the intended recipient can decrypt messages.
- Authentication: Verifies the sender's identity and prevents identity spoofing.
- Integrity: Protects messages from tampering or alteration.
- Non-Repudiation: Prevents sender from denying they sent a message.
- Darknet Security: Crucial part of secure marketplace communication.
Setting Up PGP
Before you can use PGP, you need to generate a key pair using PGP software. This involves creating a public key (for sharing) and a private key (to keep secret). A strong passphrase protects access to your private key.
Step 1: Choose PGP Software
Select the appropriate software based on your operating system:
Windows
- Gpg4win (includes