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#ifndef stream_chacha20_H
#define stream_chacha20_H
#include <stdint.h>
typedef struct crypto_stream_chacha20_implementation {
int (*stream)(unsigned char *c, unsigned long long clen,
const unsigned char *n, const unsigned char *k);
int (*stream_ietf_ext)(unsigned char *c, unsigned long long clen,
const unsigned char *n, const unsigned char *k);
int (*stream_xor_ic)(unsigned char *c, const unsigned char *m,
unsigned long long mlen,
const unsigned char *n, uint64_t ic,
const unsigned char *k);
int (*stream_ietf_ext_xor_ic)(unsigned char *c, const unsigned char *m,
unsigned long long mlen,
const unsigned char *n, uint32_t ic,
const unsigned char *k);
} crypto_stream_chacha20_implementation;
#endif
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