circuitpython/tests/extmod/ucryptolib_aes128_ctr.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

29 lines
530 B
Python

try:
from ucryptolib import aes
except ImportError:
print("SKIP")
raise SystemExit
def _new(k, ctr_initial):
return aes(k, 6, ctr_initial)
try:
_new(b"x" * 16, b"x" * 16)
except ValueError as e:
# is CTR support disabled?
if e.args[0] == "mode":
print("SKIP")
raise SystemExit
raise e
crypto = _new(b"1234" * 4, b"5678" * 4)
enc = crypto.encrypt(b"a")
print(enc)
enc += crypto.encrypt(b"b" * 1000)
print(enc)
crypto = _new(b"1234" * 4, b"5678" * 4)
print(crypto.decrypt(enc))