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Hash Cipher Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files, with optional HMAC keys and two-way AES encryption. Everything runs locally in your browser.

Adding a key applies HMAC authentication to the hash.

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About the Hash Cipher Generator

This hash generator online tool calculates MD5, SHA-1, SHA-256, and SHA-512 digests for text or files using the industry-standard CryptoJS library. Add a secret key to turn any of these algorithms into an HMAC generator for verifying both data integrity and authenticity, or switch to AES Cipher mode for reversible two-way encryption.

Whether you are confirming a file download's checksum, generating a SHA256 signature for an API request, or encrypting a message with a shared secret, every calculation happens locally inside your browser. Nothing you type or upload is ever transmitted to a server.

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How to Use

  1. Choose Text Hash, File Hash, or AES Cipher mode.
  2. Enter your text, upload a file, or paste ciphertext to decrypt.
  3. Select an algorithm from the dropdown, and optionally add a secret key for HMAC or AES.
  4. Click Copy Output to copy the generated hash or ciphertext to your clipboard.

Understanding the Algorithms

SHA-256 and SHA-512

Part of the SHA-2 family, these produce collision-resistant one-way digests widely used in modern web security and cannot be reversed.

MD5 and SHA-1

Fast, well-known checksum algorithms still common for file integrity checks, but no longer considered safe for password or security-critical use.

HMAC

Combines any of the above hash functions with a secret key, producing an authenticated code that changes if either the message or key changes.

AES Cipher

A two-way cipher that encrypts text with a secret key and decrypts it back to the original value using that same key.

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Who Should Use This

  • Backend developers verifying file checksums and generating API request signatures.
  • Security researchers testing hash and HMAC output against known reference values.
  • DevOps engineers confirming downloaded artifacts match published SHA-256 checksums.
  • QA engineers validating that encrypted test payloads decrypt back to the expected text.

Privacy First

Every hash, HMAC, and AES operation runs locally using JavaScript in your browser. Text, files, and secret keys are never uploaded, logged, or transmitted anywhere, making this tool safe for confidential data and credentials.

This hash generator online tool calculates MD5, SHA-1, SHA-256, and SHA-512 digests from text or an uploaded file. Switch algorithms with the dropdown, add an optional HMAC secret key, and the output updates instantly with no data leaving your browser.
Select File Hash mode, upload the file, and choose SHA-256 from the algorithm dropdown to see its checksum instantly. This is the standard way to verify a downloaded file matches the checksum published by its source before you trust it.
MD5 output is fine for quick file integrity checks but is not safe for passwords or security-critical signatures due to known collision attacks. Use SHA-256 or SHA-512 whenever cryptographic security, rather than simple checksum comparison, actually matters.
Entering a secret key turns each algorithm into an HMAC generator, combining the hash function with that key to produce an authenticated code. HMAC output changes completely if either the message or the secret key changes, which verifies both integrity and authenticity.
Yes, every hash and HMAC calculation on this page runs for free directly in your browser with no rate limits or account requirement. Because processing is entirely client-side, it is safe to hash confidential text, API keys, or files without ever uploading them.