python实现TAR文件的AES加密

下面是一个使用pyaes库实现TAR文件的AES加密的示例代码：

import tarfile
import pyaes

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

    # 初始化AES加密器
    aes = pyaes.AESModeOfOperationCTR(key)

    with open(in_filename, 'rb') as infile:
        with open(out_filename, 'wb') as outfile:
            while True:
                chunk = infile.read(chunksize)
                if len(chunk) == 0:
                    break
                # 加密文件块
                ciphertext = aes.encrypt(chunk)
                outfile.write(ciphertext)

    return out_filename

# 定义解密函数
def decrypt_file(key, in_filename, out_filename=None, chunksize=64*1024):
    if not out_filename:
        out_filename = in_filename[:-4]

    # 初始化AES解密器
    aes = pyaes.AESModeOfOperationCTR(key)

    with open(in_filename, 'rb') as infile:
        with open(out_filename, 'wb') as outfile:
            while True:
                chunk = infile.read(chunksize)
                if len(chunk) == 0:
                    break
                # 解密文件块
                decrypted = aes.decrypt(chunk)
                outfile.write(decrypted)

    return out_filename

# 定义TAR文件加密函数
def encrypt_tar(key, in_filename, out_filename=None):
    if not out_filename:
        out_filename = in_filename + '.enc'

    # 初始化AES加密器
    aes = pyaes.AESModeOfOperationCTR(key)

    with tarfile.open(out_filename, 'w') as tar:
        tar.add(in_filename)

    with open(out_filename, 'rb') as infile:
        with open(out_filename + '.tmp', 'wb') as outfile:
            while True:
                chunk = infile.read(64*1024)
                if len(chunk) == 0:
                    break
                # 加密文件块
                ciphertext = aes.encrypt(chunk)
                outfile.write(ciphertext)

    return out_filename + '.tmp'

# 定义TAR文件解密函数
def decrypt_tar(key, in_filename, out_filename=None):
    if not out_filename:
        out_filename = in_filename[:-4]

    # 初始化AES解密器
    aes = pyaes.AESModeOfOperationCTR(key)

    with open(in_filename, 'rb') as infile:
        with open(out_filename + '.tmp', 'wb') as outfile:
            while True:
                chunk = infile.read(64*1024)
                if len(chunk) == 0:
                    break
                # 解密文件块
                decrypted = aes.decrypt(chunk)
                outfile.write(decrypted)

    with tarfile.open(out_filename, 'w') as tar:
        tar.add(out_filename + '.tmp')

    return out_filename

# 测试加密和解密
key = b'Sixteen byte key'
in_filename = 'test.tar'
out_filename = 'test.enc'

encrypted_tar = encrypt_tar(key, in_filename, out_filename)
decrypted_tar = decrypt_tar(key, encrypted_tar)

print('加密后的文件：', encrypted_tar)
print('解密后的文件：', decrypted_tar)

这个示例代码使用pyaes库实现AES加密和解密，然后使用tarfile库实现TAR文件的打包和解包。加密和解密函数的实现与直接对文件进行加密和解密的函数类似，只是在加密和解密过程中需要对文件进行分块处理。加密和解密TAR文件的实现则是先打包或解包TAR文件，然后再对打包或解包后的文件进行加密或解密。需要注意的是，在解密TAR文件时需要先将加密的文件解密成临时文件，然后再将临时文件解包成目标文件。