Text Encryptor / Decryptor — Complete Guide & Tool Details
In an age where personal privacy and data security are increasingly important, lightweight and accessible encryption tools are essential. The Text Encryptor / Decryptor on Tools Ayoob is a free, browser-based utility designed to make secure text encryption simple and reliable. Because all cryptographic operations run locally in your browser using the modern Web Crypto API, your text never leaves your device — meaning greater privacy and control over your data. Visit our homepage at https://freeaitoolsayoob.com/ for more free tools and utilities.
This tool uses industry-recommended cryptographic building blocks: PBKDF2 with SHA-256 to derive a key from a passphrase and AES-GCM for authenticated encryption. PBKDF2 strengthens your passphrase by repeatedly hashing it with a salt, making brute-force attacks slower and more expensive. AES-GCM provides confidentiality and built-in authentication so that modifications to the encrypted message are detected during decryption.
How the tool works in practice: when you choose “Encrypt”, the tool generates a random salt (unless you provide one) and a fresh IV. The passphrase you supply is combined with the salt and run through PBKDF2 to produce a 256-bit AES key. The plaintext is encrypted with AES-GCM and the output is packaged as a single Base64 string in the format salt:iv:ciphertext. To decrypt, paste the entire blob, enter the same passphrase (and the salt if you used a custom one), and click “Decrypt”. The tool will reconstruct the key and IV and attempt to recover your original text.
Why choose a client-side encryptor like this one? For quick, ad-hoc secure sharing of notes, private messages, or short credentials, client-side encryption avoids sending sensitive strings over a network. This is particularly useful when you need to encrypt text on public or shared machines, or when you want to verify data integrity locally before sending it through other channels. That said, keep in mind that local encryption protects the data at rest and in transit only — if your device is compromised (malware, keyloggers), passphrase secrecy may be at risk.
Practical use-cases include sharing a secure snippet with a colleague (send the encrypted blob by email and share the passphrase over a different channel), saving encrypted notes in a cloud service (store the ciphertext, keep the passphrase in a trusted password manager), or protecting sensitive text in a temporary file. For developers, the Web Crypto API used here is the standard way to implement client-side cryptography in web apps; it’s fast and browser-optimized.
Best practices when using this tool:
- Use a long, unique passphrase (12+ characters) — randomness and length matter more than simple substitutions.
- Do not reuse passphrases across unrelated services; use a password manager if possible.
- Share the encrypted blob and the passphrase via separate channels to reduce interception risk.
- Store your encrypted blobs (they include salt and IV) if you plan to decrypt them later; without the passphrase the data is irrecoverable.
FAQ: Is any text sent to Tools Ayoob servers? No — encryption and decryption are performed in your browser, and this site does not collect the text or passphrases. Is this tool secure? It uses modern primitives (PBKDF2 + AES-GCM), but no online tool eliminates the need for secure practices: protect your passphrase, use up-to-date browsers, and avoid using sensitive information on compromised systems.
Final note: Tools Ayoob aims to provide simple, effective utilities that respect user privacy. If you find this Text Encryptor / Decryptor useful, please rate the tool and leave feedback in the comments — your input helps us make better, safer utilities. Visit freeaitoolsayoob.com for more free tools.