#ifndef CHACHA20_ALT_H
#define CHACHA20_ALT_H

int
iot_stream_ref(unsigned char *c, unsigned long long clen, const unsigned char *n,
           const unsigned char *k);

int
iot_stream_ietf_ref(unsigned char *c, unsigned long long clen,
                const unsigned char *n, const unsigned char *k);


int
iot_stream_ietf_ref_xor_ic(unsigned char *c, const unsigned char *m,
                        unsigned long long mlen, const unsigned char *n,
                        uint32_t ic, const unsigned char *k);

int
iot_stream_ref_xor_ic(unsigned char *c, const unsigned char *m,
                        unsigned long long mlen, const unsigned char *n,
                        uint64_t ic, const unsigned char *k);

#endif //CHACHA20_ALT_H