遗漏的部分

lci/extra/_pmc/src/pmc/rsa.py

@@ -0,0 +1,103 @@
+from cryptography.hazmat.primitives import serialization, hashes
+from cryptography.hazmat.primitives.asymmetric import rsa, padding
+from cryptography.hazmat.backends import default_backend
+import os
+class Rsa_Pri_Key:
+    '''RSA 私钥对象'''
+    def __init__(self, fullpath: str) -> None:
+        self.pri_key=Rsa_Pri_Key.load_private_key(fullpath)
+    def decrypt(self, ciphertext: str) -> str:
+        return Rsa_Pri_Key.decrypt_hex_ciphertext(self.pri_key, ciphertext)
+
+
+    @staticmethod
+    def load_private_key(pem_file, password=None):
+        '''
+        从PEM文件加载RSA私钥
+
+        :param pem_file: PEM格式的私钥文件路径
+        :param password: 私钥密码（如果有）
+        :return RSA私钥对象
+        '''
+        with open(pem_file, 'rb') as key_file:
+            private_key = serialization.load_pem_private_key(
+                key_file.read(),
+                password=password.encode() if password else None,
+                backend=default_backend()
+            )
+        return private_key
+
+    @staticmethod
+    def decrypt_hex_ciphertext(private_key, hex_ciphertext):
+        '''
+        解密HEX格式的RSA密文
+
+        :param private_key: 已加载的RSA私钥
+        :param hex_ciphertext: Hex字符串格式的密文
+        :return: 解密后的明文
+        '''
+        try:
+            # 将Hex字符串转换为bytes
+            ciphertext = bytes.fromhex(hex_ciphertext)
+
+            # 使用OAEP填充方案解密
+            plaintext = private_key.decrypt(
+                ciphertext,
+                padding.OAEP(
+                    # OPENSSL 没有显式指定时，这个是SHA1
+                    mgf=padding.MGF1(algorithm=hashes.SHA1()),
+                    algorithm=hashes.SHA1(),
+                    label=None
+                )
+            )
+            return plaintext
+        except ValueError as e:
+            print(f"Hex解码失败：{str(e)}")
+            return None
+        except Exception as e:
+            print(f"解密失败：{str(e)}")
+            return None
+
+
+def main():
+    ...
+
+if __name__ == '__main__':
+    main()
+"""
+# 生成RSA私钥
+private_key = rsa.generate_private_key(
+    public_exponent=65537,  # 通常使用65537作为公钥指数
+    key_size=2048,          # 密钥长度，推荐至少2048位
+)
+
+# 将私钥序列化为PEM格式
+pem_private_key = private_key.private_bytes(
+    encoding=serialization.Encoding.PEM,
+    format=serialization.PrivateFormat.PKCS8,
+    encryption_algorithm=serialization.NoEncryption()  # 这里不加密私钥
+)
+
+# 获取对应的公钥
+public_key = private_key.public_key()
+
+# 将公钥序列化为PEM格式
+pem_public_key = public_key.public_bytes(
+    encoding=serialization.Encoding.PEM,
+    format=serialization.PublicFormat.SubjectPublicKeyInfo
+)
+
+# 打印密钥
+print("私钥:")
+print(pem_private_key.decode('utf-8'))
+
+print("公钥:")
+print(pem_public_key.decode('utf-8'))
+
+# 可选：将密钥保存到文件
+with open('private_key.pem', 'wb') as f:
+    f.write(pem_private_key)
+
+with open('public_key.pem', 'wb') as f:
+    f.write(pem_public_key)
+"""