suspect-devices/circuitpython/shared-bindings/aesio/aes.c, branch encoding

Made most of the requested changes

2020-07-03T17:49:00+00:00

Changed unions to ReadableBuffer and WriteableBuffer

2020-07-02T21:47:52+00:00

Made suggested changes

2020-07-02T17:25:07+00:00

Changed bytearray to a union

2020-07-02T16:39:17+00:00

Did aesio

2020-07-02T15:10:53+00:00

Merge pull request #2810 from dherrada/master

2020-05-15T17:31:05+00:00

Pyi integration

aesio: specify writable buffers for destination buffers

2020-05-15T02:22:42+00:00

When calling `AES.decrypt_into()` or `AES.encrypt_into()`, the destination buffers may be any buffer kind. However, we currently aren't checking to make sure the destination buffer is actually writable. Specify `MP_BUFFER_WRITE` for the destination buffers of both of these objects so we don't inadvertently write to immutable data. Signed-off-by: Sean Cross

aesio: use bufinfo rather than mp_str_bytes

2020-05-15T02:16:00+00:00

In order to accept both `bytes` objects and `bytearray` objects, use a `bufinfo` construct to retrieve the data rather than `mp_obj_str_get_data()`. Signed-off-by: Sean Cross

Swap sphinx to autoapi and the inline stubs

2020-05-13T00:28:24+00:00

aesio: add basic AES encryption and decryption

2020-05-06T09:40:06+00:00

This adds initial support for an AES module named aesio. This implementation supports only a subset of AES modes, namely ECB, CBC, and CTR modes. Example usage: ``` >>> import aesio >>> >>> key = b'Sixteen byte key' >>> cipher = aesio.AES(key, aesio.MODE_ECB) >>> output = bytearray(16) >>> cipher.encrypt_into(b'Circuit Python!!', output) >>> output bytearray(b'E\x14\x85\x18\x9a\x9c\r\x95>\xa7kV\xa2`\x8b\n') >>> ``` This key is 16-bytes, so it uses AES128. If your key is 24- or 32- bytes long, it will switch to AES192 or AES256 respectively. This has been tested with many of the official NIST test vectors, such as those used in `pycryptodome` at https://github.com/Legrandin/pycryptodome/tree/39626a5b01ce5c1cf51d022be166ad0aea722177/lib/Crypto/SelfTest/Cipher/test_vectors/AES CTR has not been tested as NIST does not provide test vectors for it. Signed-off-by: Sean Cross