chacha20poly1305_decrypt
ret = chacha20poly1305_decrypt(dst, src, src_len, ad, ad_len,
int chacha20poly1305_decrypt(uint8_t *, const uint8_t *, const size_t,
if (chacha20poly1305_decrypt(buf, buf, buflen,
if (!chacha20poly1305_decrypt(dst, src, src_len,