CipherMail

Features Encrypt Emails: Secure your emails with OpenPGP encryption Decrypt Emails: Read encrypted emails directly in Gmail Sign Messages: Digitally sign your emails for authenticity Verify Signatures: Automatically verify signatures on received messages Key Server Lookup: Search for recipient public keys on HKP servers Key Management: Generate, export, import, and rotate your PGP keys Secure Storage: Your private keys are encrypted with AES-256-GCM Security RSA-4096 bit key generation AES-256-GCM encryption for local key storage PBKDF2 with 310,000 iterations for key derivation Brute-force protection (5 attempts = 30 min lockout) Passphrase strength validation Automatic clipboard clearing Session timeout The extension is open sourced.