97 lines
3.0 KiB
Python
97 lines
3.0 KiB
Python
import os
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from cryptography.hazmat.primitives import serialization
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from cryptography.hazmat.primitives.asymmetric import rsa, padding
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from cryptography.hazmat.primitives import hashes
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import base64
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import time
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public_key_file = "public_key.pem"
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private_key_file = "private_key.pem"
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# 生成 RSA 公私钥对并缓存到文件
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def generate_and_save_keys():
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private_key = rsa.generate_private_key(public_exponent=65537, key_size=1024)
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public_key = private_key.public_key()
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# 将公钥序列化为 PEM 格式并保存
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with open(public_key_file, "wb") as f:
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f.write(
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public_key.public_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PublicFormat.SubjectPublicKeyInfo,
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)
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)
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# 将私钥序列化为 PEM 格式并保存
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with open(private_key_file, "wb") as f:
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f.write(
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private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.PKCS8,
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encryption_algorithm=serialization.NoEncryption(),
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)
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)
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return private_key
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# 检查公私钥文件是否存在，如果不存在则生成新的
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def get_or_generate_keys():
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if not os.path.exists(public_key_file) or not os.path.exists(private_key_file):
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return generate_and_save_keys()
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with open(private_key_file, "rb") as f:
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private_key = serialization.load_pem_private_key(
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f.read(),
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password=None,
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)
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return private_key
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# 生成许可证密钥
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def generate_license_key(client_id, expiry, private_key):
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payload = f"{client_id}{expiry}"
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signature = private_key.sign(
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payload.encode(),
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padding.PSS(
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mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH
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),
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hashes.SHA256(),
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)
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signature_b64 = base64.b64encode(signature).decode()
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license_key = f"{client_id}.{expiry}.{signature_b64}"
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return license_key
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# 示例用法
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private_key = get_or_generate_keys()
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client_id = "123"
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expiry = int(time.time()) + 60 * 60 * 24 * 365 * 100 # 有效期为100年
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license_key = generate_license_key(client_id, expiry, private_key)
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public_key = private_key.public_key()
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# 序列化公钥为 PKCS#8 DER 格式
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der_public_key = public_key.public_bytes(
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encoding=serialization.Encoding.DER,
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format=serialization.PublicFormat.SubjectPublicKeyInfo,
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)
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# 将 DER 格式公钥编码为 Base64
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b64_public_key = base64.b64encode(der_public_key).decode()
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PREV_KEY = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDgVShzcLSPiOi+8ET8fggob1kmi47/cE12JaidPkwfGnScZItghkqtiLsct0U4kJhlp5gO89DYTBmIKadvxwY7kMsLlZzmi2emVH7c27cByGASY8QmWDNdG4Ggy/NDflGGBdAtN6gHawZAg4zHv3qpbPQGHH1/6sXIohcXhOnouwIDAQAB"
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print(len(b64_public_key), len(PREV_KEY))
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assert len(b64_public_key) == len(PREV_KEY)
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print("公钥:", b64_public_key)
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print("许可证密钥:", license_key)
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with open("license_key.txt", "w") as f:
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f.write(license_key)
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