aesio – AES 加密例程

AES 模块包含用于实现加密和解密的类。它旨在降低内存方面的开销。

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class aesio.AES(key: _typing.ReadableBuffer, mode: int = 0, iv: Optional[_typing.ReadableBuffer] = None, segment_size: int = 8)

加密和解密 AES 流

使用给定的密钥创建一个新的 AES 状态。

参数
  • key (ReadableBuffer) – 16、24 或 32 字节的密钥

  • mode (int) – 要使用的 AES 模式。以下之一:AES.MODE_ECB、AES.MODE_CBC 或 AES.MODE_CTR

  • iv (ReadableBuffer) – 用于 CBC 或 CTR 模式的初始化向量

由于遗留原因,支持其他参数。

加密字符串:

import aesio
from binascii import hexlify

key = b'Sixteen byte key'
inp = b'CircuitPython!!!' # Note: 16-bytes long
outp = bytearray(len(inp))
cipher = aesio.AES(key, aesio.mode.MODE_ECB)
cipher.encrypt_into(inp, outp)
hexlify(outp)
encrypt_into(self, src: _typing.ReadableBuffer, dest: _typing.WriteableBuffer)None

将缓冲区加密 srcdest.

对于 ECB 模式,缓冲区必须为 16 字节长。对于 CBC 模式,缓冲区必须是 16 字节的倍数,并且长度必须相等。对于 CTX 模式,没有限制。

decrypt_into(self, src: _typing.ReadableBuffer, dest: _typing.WriteableBuffer)None

将缓冲区解密 srcdest. 对于 ECB 模式,缓冲区必须为 16 字节长。对于 CBC 模式,缓冲区必须是 16 字节的倍数,并且长度必须相等。对于 CTX 模式,没有限制。