poly1305_state_internal_t
poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, size_t bytes)