自学教程：SecureCRTSecure7.0查看连接密码的步骤

--ip地址S:"Hostname"=192.168.0.145--登录用户S:"Username"=root--端口，加密D:"[SSH2] 端口"=00000016--密码，加密，解密需要u之后的字符串S:"Password"=u2c7d50aae53e14eb94ef0cb377c247a77c2dbcea95333365

#!/usr/bin/env python3import osfrom Crypto.Hash import SHA256from Crypto.Cipher import AES, Blowfish class SecureCRTCrypto:     def __init__(self):        '''        Initialize SecureCRTCrypto object.        '''        self.IV = b'/x00' * Blowfish.block_size        self.Key1 = b'/x24/xA6/x3D/xDE/x5B/xD3/xB3/x82/x9C/x7E/x06/xF4/x08/x16/xAA/x07'        self.Key2 = b'/x5F/xB0/x45/xA2/x94/x17/xD9/x16/xC6/xC6/xA2/xFF/x06/x41/x82/xB7'     def Encrypt(self, Plaintext : str):        '''        Encrypt plaintext and return corresponding ciphertext.        Args:            Plaintext: A string that will be encrypted.        Returns:            Hexlified ciphertext string.        '''        plain_bytes = Plaintext.encode('utf-16-le')        plain_bytes += b'/x00/x00'        padded_plain_bytes = plain_bytes + os.urandom(Blowfish.block_size - len(plain_bytes) % Blowfish.block_size)         cipher1 = Blowfish.new(self.Key1, Blowfish.MODE_CBC, iv = self.IV)        cipher2 = Blowfish.new(self.Key2, Blowfish.MODE_CBC, iv = self.IV)        return cipher1.encrypt(os.urandom(4) + cipher2.encrypt(padded_plain_bytes) + os.urandom(4)).hex()     def Decrypt(self, Ciphertext : str):        '''        Decrypt ciphertext and return corresponding plaintext.        Args:            Ciphertext: A hex string that will be decrypted.        Returns:            Plaintext string.        '''         cipher1 = Blowfish.new(self.Key1, Blowfish.MODE_CBC, iv = self.IV)        cipher2 = Blowfish.new(self.Key2, Blowfish.MODE_CBC, iv = self.IV)        ciphered_bytes = bytes.fromhex(Ciphertext)        if len(ciphered_bytes) <= 8:            raise ValueError('Invalid Ciphertext.')                padded_plain_bytes = cipher2.decrypt(cipher1.decrypt(ciphered_bytes)[4:-4])                i = 0        for i in range(0, len(padded_plain_bytes), 2):            if padded_plain_bytes[i] == 0 and padded_plain_bytes[i + 1] == 0:                break        plain_bytes = padded_plain_bytes[0:i]         try:            return plain_bytes.decode('utf-16-le')        except UnicodeDecodeError:            raise(ValueError('Invalid Ciphertext.')) class SecureCRTCryptoV2:     def __init__(self, ConfigPassphrase : str = ''):        '''        Initialize SecureCRTCryptoV2 object.        Args:            ConfigPassphrase: The config passphrase that SecureCRT uses. Leave it empty if config passphrase is not set.        '''        self.IV = b'/x00' * AES.block_size        self.Key = SHA256.new(ConfigPassphrase.encode('utf-8')).digest()     def Encrypt(self, Plaintext : str):        '''        Encrypt plaintext and return corresponding ciphertext.        Args:            Plaintext: A string that will be encrypted.        Returns:            Hexlified ciphertext string.        '''        plain_bytes = Plaintext.encode('utf-8')        if len(plain_bytes) > 0xffffffff:            raise OverflowError('Plaintext is too long.')                plain_bytes = /            len(plain_bytes).to_bytes(4, 'little') + /            plain_bytes + /            SHA256.new(plain_bytes).digest()        padded_plain_bytes = /            plain_bytes + /            os.urandom(AES.block_size - len(plain_bytes) % AES.block_size)        cipher = AES.new(self.Key, AES.MODE_CBC, iv = self.IV)        return cipher.encrypt(padded_plain_bytes).hex()     def Decrypt(self, Ciphertext : str):        '''        Decrypt ciphertext and return corresponding plaintext.        Args:            Ciphertext: A hex string that will be decrypted.        Returns:            Plaintext string.        '''        cipher = AES.new(self.Key, AES.MODE_CBC, iv = self.IV)        padded_plain_bytes = cipher.decrypt(bytes.fromhex(Ciphertext))                plain_bytes_length = int.from_bytes(padded_plain_bytes[0:4], 'little')        plain_bytes = padded_plain_bytes[4:4 + plain_bytes_length]        if len(plain_bytes) != plain_bytes_length:            raise ValueError('Invalid Ciphertext.')         plain_bytes_digest = padded_plain_bytes[4 + plain_bytes_length:4 + plain_bytes_length + SHA256.digest_size]        if len(plain_bytes_digest) != SHA256.digest_size:            raise ValueError('Invalid Ciphertext.')         if SHA256.new(plain_bytes).digest() != plain_bytes_digest:            raise ValueError('Invalid Ciphertext.')         return plain_bytes.decode('utf-8') if __name__ == '__main__':    import sys     def Help():        print('Usage:')        print('    SecureCRTCipher.py <enc|dec> [-v2] [-p ConfigPassphrase] <plaintext|ciphertext>')        print('')        print('    <enc|dec>              "enc" for encryption, "dec" for decryption.')        print('                           This parameter must be specified.')        print('')        print('    [-v2]                  Encrypt/Decrypt with "Password V2" algorithm.')        print('                           This parameter is optional.')        print('')        print('    [-p ConfigPassphrase]  The config passphrase that SecureCRT uses.')        print('                           This parameter is optional.')        print('')        print('    <plaintext|ciphertext> Plaintext string or ciphertext string.')        print('                           NOTICE: Ciphertext string must be a hex string.')        print('                           This parameter must be specified.')        print('')        def EncryptionRoutine(UseV2 : bool, ConfigPassphrase : str, Plaintext : str):        try:            if UseV2:                print(SecureCRTCryptoV2(ConfigPassphrase).Encrypt(Plaintext))            else:                print(SecureCRTCrypto().Encrypt(Plaintext))            return True        except:            print('Error: Failed to encrypt.')            return False     def DecryptionRoutine(UseV2 : bool, ConfigPassphrase : str, Ciphertext : str):        try:            if UseV2:                print(SecureCRTCryptoV2(ConfigPassphrase).Decrypt(Ciphertext))            else:                print(SecureCRTCrypto().Decrypt(Ciphertext))            return True        except:            print('Error: Failed to decrypt.')            return False     def Main(argc : int, argv : list):        if 3 <= argc and argc <= 6:            bUseV2 = False            ConfigPassphrase = ''             if argv[1].lower() == 'enc':                bEncrypt = True            elif argv[1].lower() == 'dec':                bEncrypt = False            else:                Help()                return -1                        i = 2            while i < argc - 1:                if argv[i].lower() == '-v2':                    bUseV2 = True                    i += 1                elif argv[i].lower() == '-p' and i + 1 < argc - 1:                    ConfigPassphrase = argv[i + 1]                    i += 2                else:                    Help()                    return -1             if bUseV2 == False and len(ConfigPassphrase) != 0:                print('Error: ConfigPassphrase is not supported if "-v2" is not specified')                return -1             if bEncrypt:                return 0 if EncryptionRoutine(bUseV2, ConfigPassphrase, argv[-1]) else -1            else:                return 0 if DecryptionRoutine(bUseV2, ConfigPassphrase, argv[-1]) else -1        else:            Help()     exit(Main(len(sys.argv), sys.argv))

pip install pycryptodome