tongsuo-python-sdk

Tongsuo-Python-SDK基于Tongsuo密码库, 为Python应用提供密码学原语和安全传输协议的支持，目前以支持中国商用密码算法和安全协议为主。

SM2签名和验签，详见sm2_sign_verify.py

from tongsuopy.crypto import hashes, serialization
from tongsuopy.crypto.asymciphers import ec

msg = b"hello"
key = ec.generate_private_key(ec.SM2())

pem = key.public_key().public_bytes(
    encoding=serialization.Encoding.PEM,
    format=serialization.PublicFormat.SubjectPublicKeyInfo,
)
pubkey = serialization.load_pem_public_key(pem)

signature = key.sign(msg, ec.ECDSA(hashes.SM3()))
pubkey.verify(signature, msg, ec.ECDSA(hashes.SM3()))

SM2加密和解密，详见sm2_encrypt_decrypt_from_pem.py

from tongsuopy.crypto import serialization
from tongsuopy.crypto.asymciphers import ec

msg = b"hello"
key = ec.generate_private_key(ec.SM2())

pem = key.public_key().public_bytes(
    encoding=serialization.Encoding.PEM,
    format=serialization.PublicFormat.SubjectPublicKeyInfo,
)
pubkey = serialization.load_pem_public_key(pem)

ciphertext = pubkey.encrypt(msg)
decrypt_text = key.decrypt(ciphertext)
assert decrypt_text == msg

SM3杂凑，详见sm3.py

from tongsuopy.crypto import hashes

h = hashes.Hash(hashes.SM3())
h.update(b"abc")
res = h.finalize()

SM4-CBC加密，详见sm4_cbc.py

from tongsuopy.crypto.ciphers import Cipher, algorithms, modes

c = Cipher(algorithms.SM4(key), modes.CBC(iv))
enc = c.encryptor()
ciphertext = enc.update(plaintext)
ciphertext += enc.finalize()

SM4-GCM加密，详见sm4_gcm.py

from tongsuopy.crypto.ciphers import Cipher, algorithms, modes

c = Cipher(algorithms.SM4(key), modes.GCM(iv))

enc = c.encryptor()
enc.authenticate_additional_data(aad)
ciphertext = enc.update(plaintext)
ciphertext += enc.finalize()

安装

pip install tongsuopy

要求Python >= 3.6。

功能特性

• 支持SM2加密和解密
• 支持SM2签名和验签
• 支持SM3杂凑算法
• 支持SM4加解密，包括ECB、CBC、OFB、CFB、CTR模式
• 支持SM4-GCM和SM4-CCM
• [TODO] TLCP协议支持

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