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SM2 Encrypt, Decrypt & Generate Keys

SM2 Encrypt, Decrypt & Generate Keys, processed in your browser with copy and download.

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LOCAL · PRIVATE · TOOLS

SM2 Encrypt, Decrypt & Generate Keys

Processing stays in this browser. Your input is not uploaded.

Uses the standard 256-bit SM2 curve with SM3 and browser cryptographic randomness. Public keys are uncompressed 65-byte points starting with 04; private keys are 32-byte hex. Rejects empty plaintext, corrupted ciphertext and invalid curve points.

37 / 100,000

Processed content stays in this page’s memory and cannot be recovered after clearing or closing.

About this tool

SM2 Encrypt, Decrypt & Generate Keys, processed in your browser with copy and download. Uses the standard 256-bit SM2 curve with SM3 and browser cryptographic randomness. Public keys are uncompressed 65-byte points starting with 04; private keys are 32-byte hex. Rejects empty plaintext, corrupted ciphertext and invalid curve points. Input and output are not uploaded. Metrics contain only status, duration, count and copy/download actions.

How to use

  1. Load the example or enter input and select an operation.
  2. Run the tool; cancel at any time.
  3. Review, copy or download the TXT result. Editing clears old output.

Frequently asked questions

What happens to invalid input?

Invalid formats, out-of-range numbers and oversized outputs are rejected. Follow the example; inputs are not silently repaired.

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