写两个脚本，用来使用指定秘钥为文本文件内容加密和解密，使用AES

好的，下面是使用AES加密和解密文本文件内容的Python脚本。请在使用前先安装 pyaes 库。

加密脚本：

import pyaes

# 加密函数
def encrypt_file(key, in_filename, out_filename=None, chunksize=64*1024):
    if not out_filename:
        out_filename = in_filename + '.enc'

    iv = pyaes.AESModeOfOperationCTR.generate_nonce()

    encryptor = pyaes.AESModeOfOperationCTR(key, iv)
    filesize = os.path.getsize(in_filename)

    with open(in_filename, 'rb') as infile:
        with open(out_filename, 'wb') as outfile:
            outfile.write(struct.pack('<Q', filesize))
            outfile.write(iv)

            while True:
                chunk = infile.read(chunksize)
                if len(chunk) == 0:
                    break
                outfile.write(encryptor.encrypt(chunk))

# 示例
key = b'This_is_a_secret_key'
in_filename = 'test.txt'
encrypt_file(key, in_filename)

解密脚本：

import pyaes

# 解密函数
def decrypt_file(key, in_filename, out_filename=None, chunksize=24*1024):
    if not out_filename:
        out_filename = os.path.splitext(in_filename)[0]

    with open(in_filename, 'rb') as infile:
        origsize = struct.unpack('<Q', infile.read(struct.calcsize('Q')))[0]
        iv = infile.read(16)

        decryptor = pyaes.AESModeOfOperationCTR(key, iv)

        with open(out_filename, 'wb') as outfile:
            while True:
                chunk = infile.read(chunksize)
                if len(chunk) == 0:
                    break
                outfile.write(decryptor.decrypt(chunk))

            outfile.truncate(origsize)

# 示例
key = b'This_is_a_secret_key'
in_filename = 'test.txt.enc'
decrypt_file(key, in_filename)

这两个脚本分别用于加密和解密指定的文本文件，使用AES算法，并使用指定的秘钥进行加密和解密。注意，这两个脚本必须在同一目录下使用。