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extern "C" {
#ifndef WG_KEY_LEN
#define WG_KEY_LEN 32
#endif
#define WG_KEY_LEN_BASE64 ((((WG_KEY_LEN) + 2) / 3) * 4 + 1)
/*
* wg_pubkey_base64 is a C++-compatible wrapper for the curve25519 public-key
* derivation routines used natively in `wg(8)`
*
* PRIVKEY: a c-style string containing the base64-encoded private key
* BASE64: a c-style string of capacity WG_KEY_LEN_BASE64 containing the
* encoded public key
*
* returns: 0 on success
* > 0 when an error occurs (due to improper key formatting)
*/
int wg_pubkey_base64(char const * privkey, char * base64);
}
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