GPG Encryption
A method of encrypting and decrypting emails and files using GNU Privacy Guard.
Understanding GPG (GNU Privacy Guard)
It is a public-key cryptography tool used for secure email communication, file encryption, and digital signatures. It is an open-source alternative to PGP (Pretty Good Privacy) and relies on asymmetric encryption (RSA, ECC, or DSA) to protect data.
Common Applications and Use Cases
Email Encryption – Used in PGP-based email security for end-to-end confidentiality.
Digital Signatures – Verifies integrity and authenticity of emails and files.
File and Disk Encryption – Protects sensitive documents and archives.
Best Practices and Security Considerations
Use Strong Key Lengths (≥4096-bit RSA or ECC) – Prevent brute-force decryption.
Secure Private Keys in an HSM – Prevent key theft by storing them in hardware security modules.
Enable Passphrase Protection – Protect private keys from unauthorized use.
Verify Public Keys Before Use – Prevent MITM attacks by confirming key authenticity.