| Safe Haskell | None |
|---|
Crypto.Number.Serialize
- i2osp :: Integer -> ByteString
- os2ip :: ByteString -> Integer
- i2ospOf :: Int -> Integer -> Maybe ByteString
- i2ospOf_ :: Int -> Integer -> ByteString
- lengthBytes :: Integer -> Int
Documentation
i2osp :: Integer -> ByteStringSource
i2osp converts a positive integer into a byte string
os2ip :: ByteString -> IntegerSource
os2ip converts a byte string into a positive integer
i2ospOf :: Int -> Integer -> Maybe ByteStringSource
just like i2osp, but take an extra parameter for size.
if the number is too big to fit in len bytes, nothing is returned
otherwise the number is padded with 0 to fit the len required.
FIXME: use unsafeCreate to fill the bytestring
i2ospOf_ :: Int -> Integer -> ByteStringSource
just like i2ospOf except that it doesn't expect a failure. for example if you just took a modulo of the number that represent the size (example the RSA modulo n).
lengthBytes :: Integer -> IntSource
returns the number of bytes to store an integer with i2osp
FIXME: really slow implementation. use log or bigger shifts.