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//! `xchacha20`. The same construction as `xsalsa20` but using
//! `chacha20` instead of `salsa20` as the underlying stream cipher.
//! This cipher is conjectured to meet the standard notion of
//! unpredictability.
use ffi::{crypto_stream_xchacha20,
          crypto_stream_xchacha20_xor,
          crypto_stream_xchacha20_xor_ic,
          crypto_stream_xchacha20_KEYBYTES,
          crypto_stream_xchacha20_NONCEBYTES};

stream_module!(crypto_stream_xchacha20,
               crypto_stream_xchacha20_xor,
               crypto_stream_xchacha20_xor_ic,
               crypto_stream_xchacha20_KEYBYTES,
               crypto_stream_xchacha20_NONCEBYTES);