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Secure Encryption Hash Computation Local Processing

Encryption & Decryption Toolkit

Supports 11 algorithms including Base64, MD5, SHA family, AES, URL/HTML/hexadecimal/binary encoding, CRC32, Caesar cipher and Morse code. All processing happens locally in your browser.

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Privacy protection: All encryption and decryption operations are performed locally in your browser. Data is never uploaded to any server, ensuring your privacy and data security.
Algorithm security levels:
  • Safe SHA-256 / SHA-512 — suitable for integrity verification
  • Deprecated MD5 / SHA-1 — for legacy system verification only, not for password storage or signing
  • Caution AES — security depends on key management; this tool uses browser-side CryptoJS, so avoid processing highly sensitive keys

Base64 Encode/Decode

Technical References

  1. MD5 — RFC 1321: https://www.rfc-editor.org/rfc/rfc1321
  2. AES — FIPS 197 (NIST): https://csrc.nist.gov/pubs/fips/197/final
  3. Base64 — RFC 4648: https://www.rfc-editor.org/rfc/rfc4648

Frequently Asked Questions

Which encryption algorithms are supported?

A collection of common encode/decode and hash tools including Base64, MD5, SHA, and AES, with bidirectional conversion.

Are the encryptions secure?

The algorithms follow public standards (RFC 1321, FIPS 197, etc.) and run locally in your browser.

Technical References

  1. MD5 — RFC 1321: https://www.rfc-editor.org/rfc/rfc1321
  2. AES — FIPS 197 (NIST): https://csrc.nist.gov/pubs/fips/197/final
  3. Base64 — RFC 4648: https://www.rfc-editor.org/rfc/rfc4648