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/*
20140709
Jan Mojzis
Public domain.
*/
#include <unistd.h>
#include "misc.h"
#include "crypto_stream_chacha20.h"
static unsigned char space[5232];
static unsigned char k[crypto_stream_chacha20_KEYBYTES + 16];
static unsigned char n[crypto_stream_chacha20_NONCEBYTES + 16];
static unsigned char o[32] = {
0x98, 0x43, 0x28, 0xe2, 0x76, 0xc2, 0xc3, 0xa1,
0xe8, 0xf3, 0x50, 0x98, 0x15, 0xc4, 0xea, 0xa6,
0x2c, 0x54, 0x87, 0x1b, 0x02, 0x4c, 0x61, 0xd1,
0x01, 0xd9, 0xf0, 0xb1, 0xd5, 0x21, 0xc4, 0x7a
};
static void test_alignment(void) {
long long i;
for (i = 0; i < 16; ++i) {
crypto_stream_chacha20_xor(space + i, space + i, sizeof space - i, n + i, k + i);
}
}
static void test_rand(void) {
long long i, j;
unsigned int u;
pseudorandombytes(space, sizeof space);
pseudorandombytes(k, sizeof k);
pseudorandombytes(n, sizeof n);
for (i = 0; i < sizeof space; i += 1 + i / 16) {
u = 1;
for (j = 0; j < 8; ++j) {
u += (unsigned int) n[j];
n[j] = u;
u >>= 8;
}
crypto_stream_chacha20_xor(space, space, i, n, k);
}
checksum(space, sizeof space);
fail_whenbadchecksum(o);
}
int main(void) {
test_alignment();
test_rand();
_exit(0);
}
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