SM3 Cryptographic Hash Generator

Calculate 256-bit SM3 cryptographic hash digests conforming to Chinese National Standard GB/T 32918 and ISO/IEC 10118-3:2018.

How It Works & Processing Standards

Calculate 256-bit SM3 cryptographic hash digests conforming to Chinese National Standard GB/T 32918 and ISO/IEC 10118-3:2018.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 2,000,000 characters

SM3 Cryptographic Hash Generator is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use SM3 Cryptographic Hash Generator

  1. 1
    Enter TextInput the string to be hashed.
  2. 2
    Copy DigestCopy the calculated 64-character SM3 hexadecimal hash.

Common Use Cases

  • Compliance with Chinese financial and government cryptographic specifications, TLS ShangMi suites, and digital IDs
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