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extmod/moducryptolib: Add ucryptolib module with crypto functions.

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The API follows guidelines of https://www.python.org/dev/peps/pep-0272/,
but is optimized for code size, with the idea that full PEP 0272
compatibility can be added with a simple Python wrapper mode.

The naming of the module follows (u)hashlib pattern.

At the bare minimum, this module is expected to provide:

* AES128, ECB (i.e. "null") mode, encrypt only

Implementation in this commit is based on axTLS routines, and implements
following:

* AES 128 and 256
* ECB and CBC modes
* encrypt and decrypt
This commit is contained in:
Paul Sokolovsky
2018-01-07 15:13:56 +02:00
committed by Damien George
parent b9ec6037ed
commit 567bc2d6ce
6 changed files with 205 additions and 0 deletions
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py/builtin.h
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@@ -106,6 +106,7 @@ extern const mp_obj_module_t mp_module_ujson;
extern const mp_obj_module_t mp_module_ure;
extern const mp_obj_module_t mp_module_uheapq;
extern const mp_obj_module_t mp_module_uhashlib;
extern const mp_obj_module_t mp_module_ucryptolib;
extern const mp_obj_module_t mp_module_ubinascii;
extern const mp_obj_module_t mp_module_urandom;
extern const mp_obj_module_t mp_module_uselect;