Authentication Tools
Multi-factor authentication and key management tools
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TOTP Generator
Generate time-based OTP with countdown ring visualization
HOTP Calculator
Calculate HMAC-based one-time passwords
2FA QR Code Generator
Generate QR codes for 2FA setup
Recovery Code Generator
Generate backup recovery codes for 2FA
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Authenticator Migration Tool
Migrate authenticator data between apps
Cryptographic Key Generator
Generate various cryptographic keys
Key Format Converter
Convert between PEM, DER, and PKCS formats
Key Strength Tester
Test key strength with crack time logarithmic chart
Key Splitting Tool
Split secrets using Shamir's Secret Sharing with flow diagram