Free Online Text Encryption & Decryption Tool - AES Encrypt, SHA Hash Generator

A AES (Advanced Encryption Standard) is a widely used symmetric encryption algorithm. It uses the same key for both encryption and decryption, making it fast and secure for protecting sensitive data.

A No. SHA is a one-way hash function. It generates a fixed-length fingerprint of data that cannot be reversed. It is used for data integrity verification, not encryption.

A Yes. All processing happens entirely in your browser using JavaScript. No text or keys are ever sent to our servers.

A SHA-256 produces a 256-bit (64 character) hash, while SHA-512 produces a 512-bit (128 character) hash. SHA-512 offers higher security but both are considered secure for most applications.

A To confirm if two separate pieces of text are identical, simply generate a SHA hash (like SHA-256) for each text snippet using this online tool. If the resulting hash values are exactly the same, then the original text inputs are identical. This method is highly effective for verifying text integrity or checking for unintentional modifications without revealing the original content. It's a quick way to ensure data consistency.

A This happens due to the use of an Initialization Vector (IV). Even when using the same AES key, a unique IV is generated for each encryption process. This random IV ensures that identical plaintexts produce different ciphertexts, significantly increasing the security against pattern analysis and replay attacks. It prevents attackers from recognizing if the same message has been encrypted multiple times.

A Yes, you can use this Text Encrypt Decrypt tool offline once it has initially loaded in your browser. As all encryption, decryption, and hash generation processing occurs entirely client-side using JavaScript, no internet connection is required after the page loads. This design ensures continuous functionality and enhances data privacy, as your sensitive information never leaves your device, even if your connection drops.

A To share a secret message, simply encrypt your text using AES with a strong, shared secret key. Copy the generated ciphertext and send it to your recipient through any communication channel. They can then visit this same online tool, paste the ciphertext and the pre-agreed secret key, and decrypt it instantly in their browser. This client-side process ensures your confidential message remains private during transmission.

A This Text Encrypt Decrypt tool does not generate AES encryption keys. It requires you to provide your own secret key for both encrypting and decrypting text. For maximum security, we recommend using a strong, unique passphrase or a randomly generated key from a dedicated password manager or key generator. Always keep your key confidential and never share it publicly.