双12长时效性数字签名推荐

from Crypto.PublicKey import RSA
from Crypto.Signature import pkcs1_15
from Crypto.Hash import SHA256
import time

# 生成RSA密钥对
key = RSA.generate(2048)
private_key = key.export_key()
public_key = key.publickey().export_key()

# 待签名的数据
data = b"This is a long-term digital signature for Double 12."

# 计算时间戳
timestamp = int(time.time())

# 将数据和时间戳一起签名
message = data + str(timestamp).encode()
hash_obj = SHA256.new(message)
signature = pkcs1_15.new(RSA.import_key(private_key)).sign(hash_obj)

# 验证签名
try:
    pkcs1_15.new(RSA.import_key(public_key)).verify(hash_obj, signature)
    print("签名验证成功")
except (ValueError, TypeError):
    print("签名验证失败")

# 存储签名和时间戳以便后续验证
with open("signature.bin", "wb") as f:
    f.write(signature)
with open("timestamp.txt", "w") as f:
    f.write(str(timestamp))