libsodium/test/stream.c

#include <stdio.h>
#include "crypto_stream_xsalsa20.h"
#include "crypto_hash_sha256.h"

unsigned char firstkey[32] = {
 0x1b,0x27,0x55,0x64,0x73,0xe9,0x85,0xd4
,0x62,0xcd,0x51,0x19,0x7a,0x9a,0x46,0xc7
,0x60,0x09,0x54,0x9e,0xac,0x64,0x74,0xf2
,0x06,0xc4,0xee,0x08,0x44,0xf6,0x83,0x89
} ;

unsigned char nonce[24] = {
 0x69,0x69,0x6e,0xe9,0x55,0xb6,0x2b,0x73
,0xcd,0x62,0xbd,0xa8,0x75,0xfc,0x73,0xd6
,0x82,0x19,0xe0,0x03,0x6b,0x7a,0x0b,0x37
} ;

unsigned char output[4194304];

unsigned char h[32];

main()
{
  int i;
  crypto_stream_xsalsa20(output,4194304,nonce,firstkey);
  crypto_hash_sha256(h,output,sizeof output);
  for (i = 0;i < 32;++i) printf("%02x",h[i]); printf("\n");
  return 0;
}