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#include "ge.h"
#include "keygen.h"
#include "crypto_additions.h"
void curve25519_keygen(unsigned char* curve25519_pubkey_out,
const unsigned char* curve25519_privkey_in)
{
/* Perform a fixed-base multiplication of the Edwards base point,
(which is efficient due to precalculated tables), then convert
to the Curve25519 montgomery-format public key.
NOTE: y=1 is converted to u=0 since fe_invert is mod-exp
*/
ge_p3 ed; /* Ed25519 pubkey point */
fe u;
ge_scalarmult_base(&ed, curve25519_privkey_in);
ge_p3_to_montx(u, &ed);
fe_tobytes(curve25519_pubkey_out, u);
}
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