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/*
version 20080913
D. J. Bernstein
Public domain.
*/
#include "api.h"
#include "crypto_core_hsalsa20.h"
#include "crypto_stream_salsa20.h"
#include "utils.h"
static const unsigned char sigma[16] = {
'e', 'x', 'p', 'a', 'n', 'd', ' ', '3', '2', '-', 'b', 'y', 't', 'e', ' ', 'k'
};
int crypto_stream_xor(
unsigned char *c,
const unsigned char *m,unsigned long long mlen,
const unsigned char *n,
const unsigned char *k
)
{
unsigned char subkey[32];
int ret;
crypto_core_hsalsa20(subkey,n,k,sigma);
ret = crypto_stream_salsa20_xor(c,m,mlen,n + 16,subkey);
sodium_memzero(subkey, sizeof subkey);
return ret;
}
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