release/src/router/dnscrypt/src/libnacl/crypto_stream/xsalsa20/ref/stream.c

   1 /*
   2 version 20080914
   3 D. J. Bernstein
   4 Public domain.
   5 */
   6
   7 #include "crypto_core_hsalsa20.h"
   8 #include "crypto_stream_salsa20.h"
   9 #include "crypto_stream.h"
  10
  11 static const unsigned char sigma[16] = "expand 32-byte k";
  12
  13 int crypto_stream(
  14         unsigned char *c,unsigned long long clen,
  15   const unsigned char *n,
  16   const unsigned char *k
  17 )
  18 {
  19   unsigned char subkey[32];
  20   crypto_core_hsalsa20(subkey,n,k,sigma);
  21   return crypto_stream_salsa20(c,clen,n + 16,subkey);
  22 }