SM2 Encryption/Decryption Online

Online SM2 public key cryptography tool. Chinese national standard encryption algorithm for digital signatures and key exchange.

Key Pair Management

Encryption & Decryption

Plain Text Format:
Cipher Text Format:

Digital Signature

Message to Sign
Signature Result

About SM2

What is SM2?

SM2 is a public key cryptographic algorithm based on elliptic curves. It is part of Chinese commercial cryptography standard.

Key Features

SM2 provides similar security level as RSA-2048 with shorter key lengths, making it more efficient.

Applications

Widely used in Chinese financial systems, government systems, and digital certificates.