SM2/SM3/SM4 Cryptography Encryption/Decryption

Chinese commercial cryptography standard algorithms, supporting SM2 elliptic curve public key cryptography, SM3 cryptographic hash, and SM4 block cipher encryption/decryption and hash calculation

SM2 Elliptic Curve Public Key Cryptography

Key Generation

Ciphertext Order

C1=Elliptic Curve Point, C2=Ciphertext Data, C3=SM3 Digest

Encrypt

Public Key

Plaintext

Input Format

Output Format

Decrypt

Private Key

Ciphertext

Input Format

Output Format

SM3 Cryptographic Hash Algorithm

Input

Input Format

Output Format

Result

SM4 Block Cipher

Encryption Mode

Generate Key

Generate IV

Encrypt

Key

Initialization Vector

Plaintext

Input Format

Output Format

Decrypt

Key

Initialization Vector

Ciphertext

Input Format

Output Format

Documentation

This tool performs local SM2, SM3, and SM4 operations for Chinese cryptography workflows, including encryption, hashing, and key handling.

Key Features

SM2 key generation, encryption/decryption, signing/verification
SM3 hash calculation
SM4 symmetric encryption/decryption
Multiple input/output encoding formats

Steps

Choose the SM2 / SM3 / SM4 tab.
Configure keys, mode, and formats.
Enter data and run the operation.
Copy the output result.

Notes

Keep parameters and encodings consistent across both sides.
SM4 requires a proper IV in non-ECB modes.
Manage private keys and key materials securely in production.

SM2 Elliptic Curve Public Key Cryptography

Key Generation

Encrypt

Decrypt

SM3 Cryptographic Hash Algorithm

SM4 Block Cipher

Encrypt

Decrypt

Related Tools

SM4 Block Cipher Algorithm

SM2 Online Encryption/Decryption

SM3 Cryptographic Hash Algorithm

Camellia Encryption/Decryption

GOST Online Encryption/Decryption

SEED Encryption/Decryption

RC Series (RC2/RC4/RC5/RC6) Online Encryption/Decryption

HMAC Online Encryptor

Documentation

Key Features

Steps

Notes