709 lines
26 KiB
Python
709 lines
26 KiB
Python
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import base64
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import json
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import os
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import time
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from datetime import datetime
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class EncryptionSystem:
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def __init__(self, key_file=None, key_password=None):
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self.key_file = key_file
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self.key_password = key_password
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self.keys_loaded = False
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self.special_encrypt = {
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'+': '.',
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'/': "'",
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'=': ''
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}
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self.special_decrypt = {
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'.': '+',
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"'": '/'
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}
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self.flip_pattern = None
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if key_file:
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if os.path.exists(key_file):
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if key_password is None:
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key_password = input(f"请输入密钥文件 {key_file} 的密码: ")
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self._load_keys(key_file, key_password)
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self.keys_loaded = True
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else:
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print(f"⚠️ 密钥文件 {key_file} 不存在")
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self.keys_loaded = False
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else:
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default_key = "encryption.key"
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if os.path.exists(default_key):
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self.key_file = default_key
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if key_password is None:
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key_password = input(f"请输入密钥文件 {default_key} 的密码: ")
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self._load_keys(default_key, key_password)
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self.keys_loaded = True
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else:
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print("=" * 60)
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print("首次启动，请先生成密钥文件")
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print("=" * 60)
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self.keys_loaded = False
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def _generate_random_alphabet(self, lowercase=False):
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chars = list("abcdefghijklmnopqrstuvwxyz" if lowercase else "ABCDEFGHIJKLMNOPQRSTUVWXYZ")
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n = len(chars)
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for i in range(n - 1, 0, -1):
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j = int.from_bytes(os.urandom(1), 'big') % (i + 1)
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chars[i], chars[j] = chars[j], chars[i]
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return ''.join(chars)
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def _generate_random_digit_mapping(self):
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digits = list("0123456789")
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mapping_chars = list("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
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n = len(mapping_chars)
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for i in range(n - 1, 0, -1):
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j = int.from_bytes(os.urandom(1), 'big') % (i + 1)
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mapping_chars[i], mapping_chars[j] = mapping_chars[j], mapping_chars[i]
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mapping = {}
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for i, d in enumerate(digits):
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mapping[d] = mapping_chars[i]
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return mapping
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def _generate_random_equal_mapping(self):
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chars = list("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
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n = len(chars)
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for i in range(n - 1, 0, -1):
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j = int.from_bytes(os.urandom(1), 'big') % (i + 1)
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chars[i], chars[j] = chars[j], chars[i]
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mapping = {
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'0': chars[0],
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'1': chars[1],
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'2': chars[2],
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'3': chars[3]
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}
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return mapping
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def _generate_random_flip_pattern(self):
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pattern = []
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for _ in range(10):
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bit = int.from_bytes(os.urandom(1), 'big') % 2
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pattern.append(bit)
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return pattern
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def _generate_long_key(self, length=4096):
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chars = "0123456789abcdef"
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result = []
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for _ in range(length):
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idx = int.from_bytes(os.urandom(1), 'big') % 16
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result.append(chars[idx])
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return ''.join(result)
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def _generate_short_key(self, length=512):
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chars = "0123456789abcdef"
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result = []
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for _ in range(length):
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idx = int.from_bytes(os.urandom(1), 'big') % 16
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result.append(chars[idx])
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return ''.join(result)
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def _obfuscate_keys(self, keys_data):
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json_str = json.dumps(keys_data)
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b64 = base64.b64encode(json_str.encode()).decode()
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reversed_b64 = b64[::-1]
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shifted = ''.join([chr((ord(c) + 1) % 128) for c in reversed_b64])
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final = base64.b64encode(shifted.encode()).decode()
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return final
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def _deobfuscate_keys(self, obfuscated_data):
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try:
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shifted = base64.b64decode(obfuscated_data.encode()).decode()
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reversed_b64 = ''.join([chr((ord(c) - 1) % 128) for c in shifted])
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b64 = reversed_b64[::-1]
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json_str = base64.b64decode(b64.encode()).decode()
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return json.loads(json_str)
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except Exception:
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raise Exception("密钥文件损坏")
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def _xor_encrypt_data(self, data, password):
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result = []
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key_len = len(password)
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for i, char in enumerate(data):
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xor_result = ord(char) ^ ord(password[i % key_len])
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result.append(f"{xor_result:02x}")
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return ''.join(result)
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def _xor_decrypt_data(self, hex_data, password):
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try:
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result = []
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key_len = len(password)
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for i in range(0, len(hex_data), 2):
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if i + 1 < len(hex_data):
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hex_byte = hex_data[i:i+2]
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xor_result = int(hex_byte, 16) ^ ord(password[(i//2) % key_len])
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result.append(chr(xor_result))
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return ''.join(result)
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except Exception:
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return None
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def generate_keys(self, save_path=None, key_password=None):
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if key_password is None:
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key_password = input("请设置密钥文件密码: ")
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confirm = input("请再次输入密码确认: ")
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if key_password != confirm:
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print("❌ 密码不匹配")
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return None
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print("=" * 60)
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print("正在生成随机密钥...")
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print("=" * 60)
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self.upper_mapping = self._generate_random_alphabet(lowercase=False)
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self.lower_mapping = self._generate_random_alphabet(lowercase=True)
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self.digit_mapping = self._generate_random_digit_mapping()
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self.equal_mapping = self._generate_random_equal_mapping()
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self.flip_pattern = self._generate_random_flip_pattern()
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self.long_key = self._generate_long_key(4096)
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self.short_key = self._generate_short_key(512)
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self.digit_reverse = {v: k for k, v in self.digit_mapping.items()}
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self.equal_reverse = {v: k for k, v in self.equal_mapping.items()}
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keys_data = {
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'upper_mapping': self.upper_mapping,
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'lower_mapping': self.lower_mapping,
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'digit_mapping': self.digit_mapping,
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'equal_mapping': self.equal_mapping,
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'flip_pattern': self.flip_pattern,
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'long_key': self.long_key,
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'short_key': self.short_key,
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'generated_at': datetime.now().isoformat()
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}
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obfuscated = self._obfuscate_keys(keys_data)
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encrypted = self._xor_encrypt_data(obfuscated, key_password)
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if save_path is None:
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save_path = "encryption.key"
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with open(save_path, 'w') as f:
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f.write(encrypted)
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self.key_file = save_path
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self.key_password = key_password
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self.keys_loaded = True
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self._build_maps()
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print(f"✅ 密钥已生成并保存到: {save_path}")
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print("=" * 60)
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return save_path
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def _build_maps(self):
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self.upper_original = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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self.lower_original = "abcdefghijklmnopqrstuvwxyz"
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self.encrypt_map = {}
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self.decrypt_map = {}
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for i in range(26):
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self.encrypt_map[self.upper_original[i]] = self.upper_mapping[i]
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self.encrypt_map[self.lower_original[i]] = self.lower_mapping[i]
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self.decrypt_map[self.upper_mapping[i]] = self.upper_original[i]
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self.decrypt_map[self.lower_mapping[i]] = self.lower_original[i]
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def _load_keys(self, key_file, key_password):
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try:
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with open(key_file, 'r') as f:
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encrypted_data = f.read()
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decrypted = self._xor_decrypt_data(encrypted_data, key_password)
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if decrypted is None:
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print("❌ 密码错误")
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self.keys_loaded = False
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return
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keys_data = self._deobfuscate_keys(decrypted)
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self.upper_mapping = keys_data['upper_mapping']
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self.lower_mapping = keys_data['lower_mapping']
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self.digit_mapping = keys_data['digit_mapping']
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self.equal_mapping = keys_data['equal_mapping']
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self.flip_pattern = keys_data['flip_pattern']
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self.long_key = keys_data['long_key']
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self.short_key = keys_data['short_key']
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self.digit_reverse = {v: k for k, v in self.digit_mapping.items()}
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self.equal_reverse = {v: k for k, v in self.equal_mapping.items()}
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self.key_password = key_password
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self._build_maps()
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self.keys_loaded = True
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print(f"✅ 密钥已从 {key_file} 加载")
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except Exception:
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print("❌ 加载失败")
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self.keys_loaded = False
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def _ensure_printable(self, text):
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result = []
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for c in text:
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val = ord(c)
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if val == 124:
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result.append('|')
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elif val < 32 or val > 126:
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val = val % 95 + 32
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result.append(chr(val))
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else:
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result.append(c)
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return ''.join(result)
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def _mix_keys(self, user_password, target_length):
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if not self.keys_loaded:
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raise Exception("密钥未加载")
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mixed = []
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max_len = max(len(user_password), len(self.short_key))
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for i in range(max_len):
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if i < len(user_password):
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mixed.append(ord(user_password[i]))
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if i < len(self.short_key):
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mixed.append(ord(self.short_key[i]))
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for i in range(len(mixed)):
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if i % 3 == 0:
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mixed[i] = (mixed[i] << 1) & 0xFF
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elif i % 3 == 1:
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mixed[i] = (mixed[i] >> 1) & 0xFF
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else:
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mixed[i] = mixed[i] ^ 0x5A
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for i in range(0, len(mixed) - 3, 4):
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mixed[i], mixed[i+3] = mixed[i+3], mixed[i]
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mixed[i+1], mixed[i+2] = mixed[i+2], mixed[i+1]
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mixed.reverse()
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result = []
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for x in mixed:
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if x < 32 or x > 126:
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x = x % 95 + 32
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result.append(chr(x))
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result_str = ''.join(result)
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if len(result_str) < target_length:
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base_key = result_str
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final_key = base_key
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iteration = 0
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while len(final_key) < target_length:
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if iteration % 3 == 0:
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next_chunk = base_key[::-1]
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elif iteration % 3 == 1:
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next_chunk = base_key[::-1]
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next_chunk = ''.join([chr((ord(c) + iteration) % 95 + 32) for c in next_chunk])
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else:
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next_chunk = base_key[::-1]
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next_chunk = ''.join([chr((ord(c) ^ iteration) % 95 + 32) for c in next_chunk])
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final_key += next_chunk
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iteration += 1
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result_str = final_key[:target_length]
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return self._ensure_printable(result_str)
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def _derive_final_key(self, user_password, text_length):
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mixed_key = self._mix_keys(user_password, text_length * 2)
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hex_key = ''.join([f"{ord(c):02x}" for c in mixed_key])
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reversed_hex = hex_key[::-1]
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final_key = []
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for i in range(0, len(reversed_hex), 2):
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if i + 1 < len(reversed_hex):
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hex_byte = reversed_hex[i:i+2]
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try:
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val = int(hex_byte, 16)
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if val < 32 or val > 126:
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val = val % 95 + 32
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final_key.append(chr(val))
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except ValueError:
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final_key.append('x')
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final_key_str = ''.join(final_key)
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if len(final_key_str) < text_length:
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base_key = final_key_str
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iteration = 0
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while len(final_key_str) < text_length:
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if iteration % 3 == 0:
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next_chunk = base_key[::-1]
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elif iteration % 3 == 1:
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next_chunk = base_key[::-1]
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next_chunk = ''.join([chr((ord(c) + iteration) % 95 + 32) for c in next_chunk])
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else:
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next_chunk = base_key[::-1]
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next_chunk = ''.join([chr((ord(c) ^ iteration) % 95 + 32) for c in next_chunk])
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final_key_str += next_chunk
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iteration += 1
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final_key_str = final_key_str[:text_length]
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final_key_str = self._ensure_printable(final_key_str)
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return final_key_str
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def _apply_flip(self, text):
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if self.flip_pattern is None:
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return text
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result = []
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for i, ch in enumerate(text):
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idx = i % len(self.flip_pattern)
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if ch.isalpha() and self.flip_pattern[idx] == 1:
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result.append(ch.swapcase())
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else:
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result.append(ch)
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return ''.join(result)
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def _xor_encrypt_with_final_key(self, text, user_password):
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final_key = self._derive_final_key(user_password, len(text))
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key_len = len(final_key)
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result = []
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for i, char in enumerate(text):
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xor_result = ord(char) ^ ord(final_key[i % key_len])
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result.append(f"{xor_result:02x}")
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return ''.join(result)
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def _xor_decrypt_with_final_key(self, hex_text, user_password):
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try:
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text_length = len(hex_text) // 2
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final_key = self._derive_final_key(user_password, text_length)
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key_len = len(final_key)
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result = []
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for i in range(0, len(hex_text), 2):
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if i + 1 < len(hex_text):
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hex_byte = hex_text[i:i+2]
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try:
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xor_result = int(hex_byte, 16) ^ ord(final_key[(i//2) % key_len])
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if xor_result < 32 or xor_result > 126:
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xor_result = xor_result % 95 + 32
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result.append(chr(xor_result))
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except ValueError:
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result.append('?')
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return ''.join(result)
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except Exception:
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return None
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def _substitute_letters(self, text, mapping):
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result = []
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for char in text:
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if char in mapping:
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result.append(mapping[char])
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else:
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result.append(char)
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return ''.join(result)
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def _encode_digit(self, num_str):
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result = []
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for char in num_str:
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if char in self.digit_mapping:
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result.append(self.digit_mapping[char])
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else:
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result.append(char)
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return ''.join(result)
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def _decode_digit(self, encoded_str):
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result = []
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for char in encoded_str:
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if char in self.digit_reverse:
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result.append(self.digit_reverse[char])
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else:
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result.append(char)
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return ''.join(result)
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def _get_dynamic_key(self, text_length):
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key = self.long_key
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while len(key) < text_length:
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key += self.long_key
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return key[:text_length]
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def _xor_encrypt_with_key(self, text, key):
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key_len = len(key)
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result = []
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for i, char in enumerate(text):
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xor_result = ord(char) ^ ord(key[i % key_len])
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result.append(f"{xor_result:02x}")
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return ''.join(result)
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def _xor_decrypt_with_key(self, hex_text, key):
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try:
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key_len = len(key)
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result = []
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for i in range(0, len(hex_text), 2):
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if i + 1 < len(hex_text):
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hex_byte = hex_text[i:i+2]
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try:
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xor_result = int(hex_byte, 16) ^ ord(key[(i//2) % key_len])
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if xor_result < 32 or xor_result > 126:
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xor_result = xor_result % 95 + 32
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result.append(chr(xor_result))
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except ValueError:
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result.append('?')
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return ''.join(result)
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except Exception:
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return None
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def encrypt(self, plaintext, user_password):
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if not self.keys_loaded:
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return "❌ 错误：密钥未加载"
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b64 = base64.b64encode(plaintext.encode('utf-8')).decode('utf-8')
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equal_count = b64.count('=')
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processed = b64
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for old, new in self.special_encrypt.items():
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processed = processed.replace(old, new)
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processed = processed.rstrip('=')
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sub = self._substitute_letters(processed, self.encrypt_map)
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flipped = self._apply_flip(sub)
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reversed_text = flipped[::-1]
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equal_char = self.equal_mapping[str(equal_count)]
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with_equal = f"{reversed_text}|{equal_char}"
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key_length_str = str(len(with_equal))
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key_length_encoded = self._encode_digit(key_length_str)
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dynamic_key = self._get_dynamic_key(len(with_equal))
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encrypted_by_dynamic = self._xor_encrypt_with_key(with_equal, dynamic_key)
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combined = f"{encrypted_by_dynamic}|{key_length_encoded}"
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final_encrypted = self._xor_encrypt_with_final_key(combined, user_password)
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|
|
return final_encrypted
|
|
|
|
def decrypt(self, ciphertext, user_password):
|
|
if not self.keys_loaded:
|
|
return "❌ 解密失败"
|
|
|
|
try:
|
|
combined = self._xor_decrypt_with_final_key(ciphertext, user_password)
|
|
if combined is None:
|
|
return "❌ 解密失败"
|
|
|
|
if '|' in combined:
|
|
parts = combined.split('|')
|
|
if len(parts) >= 2:
|
|
hex_data = parts[0]
|
|
key_length_encoded = parts[1]
|
|
else:
|
|
hex_data = parts[0]
|
|
key_length_encoded = 'g'
|
|
else:
|
|
hex_data = combined
|
|
key_length_encoded = 'g'
|
|
|
|
key_length_str = self._decode_digit(key_length_encoded)
|
|
try:
|
|
key_length = int(key_length_str)
|
|
except ValueError:
|
|
key_length = 16
|
|
|
|
dynamic_key = self._get_dynamic_key(key_length)
|
|
xor_decrypted = self._xor_decrypt_with_key(hex_data, dynamic_key)
|
|
if xor_decrypted is None:
|
|
return "❌ 解密失败"
|
|
|
|
if '|' in xor_decrypted:
|
|
main_part, equal_char = xor_decrypted.split('|')
|
|
equal_count = int(self.equal_reverse.get(equal_char, '0'))
|
|
else:
|
|
main_part = xor_decrypted
|
|
equal_count = 0
|
|
|
|
reversed_text = main_part[::-1]
|
|
flipped = self._apply_flip(reversed_text)
|
|
sub = self._substitute_letters(flipped, self.decrypt_map)
|
|
|
|
for old, new in self.special_decrypt.items():
|
|
sub = sub.replace(old, new)
|
|
|
|
b64_with_equal = sub + '=' * equal_count
|
|
|
|
if len(b64_with_equal) % 4 != 0:
|
|
return "❌ 解密失败"
|
|
|
|
decoded = base64.b64decode(b64_with_equal.encode('utf-8')).decode('utf-8')
|
|
return decoded
|
|
|
|
except Exception:
|
|
return "❌ 解密失败"
|
|
|
|
def print_keys(self):
|
|
if not self.keys_loaded:
|
|
print("❌ 未加载密钥")
|
|
return
|
|
|
|
print("=" * 60)
|
|
print("密钥信息")
|
|
print("=" * 60)
|
|
print(f"密钥文件: {self.key_file}")
|
|
print(f"大写映射表: {self.upper_mapping}")
|
|
print(f"小写映射表: {self.lower_mapping}")
|
|
print(f"翻转模式: {self.flip_pattern}")
|
|
print(f"长密钥长度: {len(self.long_key)} 位")
|
|
print(f"短密钥长度: {len(self.short_key)} 位")
|
|
print("=" * 60)
|
|
|
|
|
|
def main():
|
|
print("=" * 60)
|
|
print("欢迎使用加密系统")
|
|
print("=" * 60)
|
|
|
|
crypto = None
|
|
key_password = None
|
|
|
|
if os.path.exists("encryption.key"):
|
|
key_password = input("请输入默认密钥文件 (encryption.key) 的密码: ")
|
|
crypto = EncryptionSystem("encryption.key", key_password)
|
|
if not crypto.keys_loaded:
|
|
print("❌ 加载失败")
|
|
crypto = None
|
|
else:
|
|
print("\n未找到默认密钥文件，请先生成")
|
|
choice = input("是否生成默认密钥文件？(y/n): ").strip().lower()
|
|
if choice == 'y':
|
|
crypto = EncryptionSystem()
|
|
key_password = crypto.generate_keys("encryption.key")
|
|
if key_password is None:
|
|
print("❌ 生成失败")
|
|
crypto = None
|
|
else:
|
|
print("⚠️ 请使用模式4或5指定密钥文件，或模式6生成新密钥")
|
|
|
|
while True:
|
|
print("\n请选择操作:")
|
|
print("1. 使用默认密钥加密")
|
|
print("2. 使用默认密钥解密")
|
|
print("3. 生成新密钥（覆盖默认）")
|
|
print("4. 使用指定密钥文件加密")
|
|
print("5. 使用指定密钥文件解密")
|
|
print("6. 生成密钥并保存到当前文件夹")
|
|
print("7. 查看当前密钥信息")
|
|
print("8. 退出")
|
|
|
|
choice = input("\n请选择操作 (1-8): ").strip()
|
|
|
|
if choice == '1':
|
|
if crypto is None or not crypto.keys_loaded:
|
|
if os.path.exists("encryption.key"):
|
|
if key_password is None:
|
|
key_password = input("请输入默认密钥文件密码: ")
|
|
crypto = EncryptionSystem("encryption.key", key_password)
|
|
if not crypto.keys_loaded:
|
|
print("❌ 加载失败")
|
|
continue
|
|
else:
|
|
print("❌ 密钥文件不存在")
|
|
continue
|
|
|
|
password = input("请输入加密密码: ")
|
|
text = input("请输入要加密的文本: ")
|
|
if text and password:
|
|
encrypted = crypto.encrypt(text, password)
|
|
print(f"\n✅ 加密结果: {encrypted}")
|
|
|
|
elif choice == '2':
|
|
if crypto is None or not crypto.keys_loaded:
|
|
if os.path.exists("encryption.key"):
|
|
if key_password is None:
|
|
key_password = input("请输入默认密钥文件密码: ")
|
|
crypto = EncryptionSystem("encryption.key", key_password)
|
|
if not crypto.keys_loaded:
|
|
print("❌ 加载失败")
|
|
continue
|
|
else:
|
|
print("❌ 密钥文件不存在")
|
|
continue
|
|
|
|
password = input("请输入加密密码: ")
|
|
text = input("请输入要解密的密文: ")
|
|
if text and password:
|
|
decrypted = crypto.decrypt(text, password)
|
|
print(f"\n✅ 解密结果: {decrypted}")
|
|
|
|
elif choice == '3':
|
|
crypto = EncryptionSystem()
|
|
key_password = crypto.generate_keys("encryption.key")
|
|
if key_password is None:
|
|
print("❌ 生成失败")
|
|
else:
|
|
print("✅ 默认密钥已更新")
|
|
|
|
elif choice == '4':
|
|
key_file = input("请输入密钥文件路径: ")
|
|
if not os.path.exists(key_file):
|
|
print(f"❌ 文件不存在")
|
|
continue
|
|
|
|
kp = input(f"请输入密钥文件密码: ")
|
|
crypto = EncryptionSystem(key_file, kp)
|
|
if not crypto.keys_loaded:
|
|
print("❌ 加载失败")
|
|
continue
|
|
|
|
password = input("请输入加密密码: ")
|
|
text = input("请输入要加密的文本: ")
|
|
if text and password:
|
|
encrypted = crypto.encrypt(text, password)
|
|
print(f"\n✅ 加密结果: {encrypted}")
|
|
|
|
elif choice == '5':
|
|
key_file = input("请输入密钥文件路径: ")
|
|
if not os.path.exists(key_file):
|
|
print(f"❌ 文件不存在")
|
|
continue
|
|
|
|
kp = input(f"请输入密钥文件密码: ")
|
|
crypto = EncryptionSystem(key_file, kp)
|
|
if not crypto.keys_loaded:
|
|
print("❌ 加载失败")
|
|
continue
|
|
|
|
password = input("请输入加密密码: ")
|
|
text = input("请输入要解密的密文: ")
|
|
if text and password:
|
|
decrypted = crypto.decrypt(text, password)
|
|
print(f"\n✅ 解密结果: {decrypted}")
|
|
|
|
elif choice == '6':
|
|
timestamp = int(time.time())
|
|
filename = f"key_{timestamp}.key"
|
|
crypto = EncryptionSystem()
|
|
kp = crypto.generate_keys(filename)
|
|
if kp is None:
|
|
print("❌ 生成失败")
|
|
else:
|
|
print(f"✅ 密钥已保存到: {filename}")
|
|
|
|
elif choice == '7':
|
|
if crypto is None or not crypto.keys_loaded:
|
|
if os.path.exists("encryption.key"):
|
|
if key_password is None:
|
|
key_password = input("请输入默认密钥文件密码: ")
|
|
crypto = EncryptionSystem("encryption.key", key_password)
|
|
if not crypto.keys_loaded:
|
|
print("❌ 加载失败")
|
|
continue
|
|
else:
|
|
print("❌ 未加载密钥")
|
|
continue
|
|
crypto.print_keys()
|
|
|
|
elif choice == '8':
|
|
print("感谢使用，再见!")
|
|
break
|
|
|
|
else:
|
|
print("❌ 无效选择")
|
|
|
|
if __name__ == "__main__":
|
|
main()
|