GPG compliance requirements define the rules for using GNU Privacy Guard in a way that meets security and regulatory needs. GPG uses OpenPGP standards to encrypt, sign, and verify data and communications. Compliance means more than installing the tool. It requires correct configuration, controlled key management, and documented processes that align with recognized standards.
To achieve full GPG compliance, the following requirements must be met:
- Adherence to OpenPGP standards – Use algorithms, key sizes, and formats approved by the latest OpenPGP specification. Avoid deprecated ciphers and hashing methods.
- Secure key generation – Keys must be generated with sufficient entropy and at lengths that meet compliance policy (commonly 4096-bit RSA or stronger).
- Key lifecycle management – Implement expiration dates, rotation schedules, and revocation procedures. Maintain control over private keys at all times.
- Verified signatures – Ensure all signed messages and files are checked against trusted public keys to detect tampering.
- Strong passphrase policy – Passphrases must meet complexity and length requirements, stored only in secure environments, never in plaintext.
- Audit logging – Keep detailed logs of encryption, decryption, key usage, and administrative actions for compliance audits.
- Access controls – Limit who can generate, access, and use keys through role-based permissions and secure storage mechanisms.
- Periodic compliance review – Regularly test and verify your GPG setup against updated standards and organizational security policies.
These GPG compliance requirements align encryption practices with legal, contractual, and operational mandates. Organizations that fail to meet them risk data breaches, failed certifications, and loss of trust. Meeting the requirements means your encryption stands up to scrutiny and resists attack.