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from pycryptopp import _import_my_names
_import_my_names(globals(), "xsalsa20_")
del _import_my_names
def selftest():
# pyflakes doesn't know that XSalsa20 is made available above
XSalsa20 = globals()["XSalsa20"]
from binascii import unhexlify
key = unhexlify("ad5eadf7163b0d36e44c126037a03419"
"fcda2b3a1bb4ab064b6070e61b0fa5ca")
iv = unhexlify("6a059adb8c7d4acb1c537767d541506f" "c5ef0ace9a2a65bd")
encrypted = unhexlify("23a8ed0475150e988c545b11e3660de7"
"8bf88e6628c4c99ba36330c05cb919e7"
"901295db479c9a8a0401d5e040b8919b"
"7d64b2f728c59703c3")
p = XSalsa20(key, iv)
decrypted = p.process(encrypted)
expected = "crypto libraries should always test themselves at powerup"
assert decrypted == expected
p = XSalsa20(key, iv)
decrypted = ""
offset = 0
for chunksize in [13,11,1,2,3,20,999]:
decrypted += p.process(encrypted[offset:offset+chunksize])
offset += chunksize
assert decrypted == expected
selftest()
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