module Zlib: sig .. end
The Zlib module supports the compression and decompression
of data, using the zlib library. The algorithm used is
Lempel-Ziv compression as in the gzip and zip compressors.
While compression itself is not encryption, it is often used prior
to encryption to hide regularities in the plaintext, and reduce
the size of the ciphertext.
val compress : ?level:int -> unit -> Cryptokit.transform
Return a transform that compresses its input.
The optional level argument is an integer between 1 and 9
specifying how hard the transform should try to compress data:
1 is lowest but fastest compression, while 9 is highest but
slowest compression. The default level is 6.
val uncompress : unit -> Cryptokit.transform
Return a transform that decompresses its input.