Universal Crypto Tools & Key / Cert Studio

Cryptographic Workbench:
- Symmetric Encryption & Decryption: Text & file encryption with AES-256-GCM. Features 📂 Load File into Input... (supports UTF-8 text, ASCII armor, or binary converted to Base64), 💾 Save Output to File..., and 1-click direct file encryption/decryption (.enc).
- Interactive File Encryption Queue: Batch-encrypt and decrypt multiple files or entire folder trees with an interactive queue showing individual file sizes, remove buttons (✕), clear queue, alongside vs custom folder output destinations, and real-time progress.
- Cryptographic Hashes: SHA-256, SHA-512, MD5, and HMAC-SHA256.
- Data Encoders: Base64 Encode/Decode, Hex Encode/Decode, URL Encode/Decode.
- UUID & Entropy: Cryptographically secure UUID v4 generation.
Key & Certificate Generation Studio & Key Studio:
- Ed25519 Keypairs: Modern 256-bit elliptic curve SSH keys with OpenSSH and PuTTY (.ppk) export support.
- WireGuard VPN Keypairs: X25519 public/private keys for VPN tunnels (.wg.pub / .wg.key).
- Self-Signed X.509 TLS/SSL Certificates: Custom Common Names (CN), Subject Alternative Names (SANs), RSA / ECDSA / Ed25519 keys, and configurable validity periods (.crt / .key).
- RSA-4096 & GPG / OpenPGP / Age: High-security RSA, armored OpenPGP keypairs (.asc), and modern Age encryption keys (.recipient.txt / .key).
- Direct Vault Storage: 1-click button to save newly generated keys and certificates straight into your encrypted database keyring.
- Local PC File & Bundle Export: Save individual public keys / certs or private keys straight to your computer with automatic file extension matching, or export both simultaneously via 📦 Export Keypair Bundle to Folder....
- Local Key Installer & System Verifier: Select and install SSH, GPG, Age, WireGuard, and TLS keys directly onto your local Windows or Linux host:
  - Automated Security Hardening: Enforces strict permissions (NTFS ACLs restricted to current user on Windows; POSIX chmod 0600/0700 on Linux/macOS) with overwrite safeguards.
  - Exhaustive System Audits: Verifies file existence, SHA-256 bit-for-bit integrity, and syntax via OpenSSH ssh-keygen -l.
  - Agent & Host Integration: Automatically adds public keys to ~/.ssh/authorized_keys, creates ~/.ssh/config Host blocks, and registers keys into running ssh-agent or native GPG keyrings (gpg --import).
  - Local Key Scanner & Exporter: Scan and discover existing keys across local directories (~/.ssh, ~/.gnupg, etc.) to import into the vault, or bulk-export vault keys with an OpenSSH client configuration template or compressed .zip archive.