Encryption converts readable text into scrambled data using a secret key. Decryption reverses this process, restoring original content when the correct key is supplied. This tool lets you perform both operations directly in your browser, eliminating external dependencies while supporting multiple modern algorithms and flexible encodings for diverse security workflows.
The underlying engine combines built-in browser cryptography with lightweight client modules. Password-derived keys pass through strong hashing, and authenticated modes pair confidentiality with integrity checks. Random nonces and salts are generated locally, strengthening brute-force resistance and preventing replay attacks. All processing happens on-device, so your text never leaves your screen.
Deploy the tool whenever you need quick, offline protection for chat excerpts, configuration files, or API tokens before sharing or archiving; it completes the transformation in milliseconds, supports multiple encodings, integrates smoothly with existing copy-and-paste workflows, and frees you from server trust assumptions—remember that forgotten passwords or keys permanently block decryption, so store credentials responsibly.
Technical Details:
This single-page, reactive interface uses native browser cryptography APIs for key generation and cipher operations. A tiny helper module manages URL state, enabling shareable links without server calls. All random values originate from the operating-system entropy pool, and clipboard interactions rely on the Permissions-aware Clipboard API, ensuring seamless cross-platform support.
Feature Breakdown
Multi-algorithm Support
Select from authenticated and legacy ciphers, balancing speed, compatibility, and security requirements.
Client-side Key Derivation
Keys derive from your password using industry-standard hashing; nothing is transmitted or stored remotely.
Random IV & Salt Generators
One-click buttons deliver high-entropy values, reducing reuse risks and hardening encryption strength.
Shareable URL Parameters
The interface encodes settings in the address bar, letting you replicate configurations without exporting files.
Instant Clipboard Copy
A contextual button copies results with visual feedback and graceful fallback for legacy browsers.
Step-by-Step Guide:
Follow these steps to transform text securely:
- Type or paste your message into the Plaintext/Ciphertext textarea.
- Enter a strong password in the Password field required.
- Pick an option from the Algorithm dropdown.
- Choose Encrypt or Decrypt using the radio buttons.
- Click Advanced optional to adjust IV / Nonce, Salt, or Output encoding.
- Review the generated Ciphertext/Plaintext in the output box.
- Press the Copy button to place the result on your clipboard for sharing.
FAQ:
Answers to the most common questions appear below.
Is my data stored?
No. All processing occurs locally in your browser; the tool never uploads, logs, or retains your text.
Which algorithm should I use?
Authenticated modes offer modern security and integrity. Legacy ciphers remain for compatibility; choose them only when required.
What if I lose my password?
Decryption becomes impossible. Store passwords securely in a manager or another protected location.
Why do IV and salt matter?
They introduce randomness, preventing identical ciphertext and hindering pattern analysis by attackers.
Does the tool work offline?
Yes. After initial load, all features function without an internet connection.
Troubleshooting:
Resolve common issues using the guidance below.
- Output is blank → Verify the Password field is not empty.
- “Decryption failed” message → Confirm algorithm, encoding, and password match the original settings.
- Browser blocks clipboard → Grant clipboard permission or use manual copy via context menu.
- Unsupported browser alert → Upgrade to a version with modern cryptography support.
- Long ciphertext pasted incorrectly → Ensure no extra whitespace appears after copying.
Glossary:
Key terms you will encounter:
- Ciphertext
- Scrambled output produced by encryption.
- Plaintext
- Original readable text before encryption.
- Nonce
- Number used once, ensuring unique encryption operations.
- Salt
- Random bytes added to passwords during key derivation.
- Key Derivation
- Process that converts a password into a strong cryptographic key.