This tool provides an online service for the SM2 algorithm, supporting functions such as key generation, signing, verification, encryption, and decryption, making it convenient for users to quickly perform SM2-related operations.

Usage Instructions:

• Key Generation You can generate a public-private key pair as needed by selecting the key data type (Hex or Base64) and download it for saving.
• Encryption/Decryption Supports both new standard (C1C3C2) and old standard (C1C2C3) ciphertext data orders, you can choose encryption or decryption operations, and view the plaintext and ciphertext.
• Signature Verification Supports SM3 Hash calculation, you can choose the signature result type (ASN1 or R+S) and perform signing or verification operations.
• Public-Private Key Pair Verification You can verify whether the public-private key pair matches.
• Public Key Export Supports exporting the public key from the private key, public key certificate, or CSR.
• Public Key Compression You can compress the public key and restore it.

Security Guarantee:

• This tool uses secure encryption technology to ensure user data security.
• All operations are completed on the client side, user data will not be uploaded to the server.

Notes:

• Please keep your private key safe, as leaking your private key will put your data at risk.
• This tool is for learning and testing purposes only and should not be used in production environments.