ref: e1fc03c875e12e40be5ac70f244ef19ce1fb6339
dir: /sys/src/libsec/port/rsaprivtopub.c/
#include "os.h"
#include <mp.h>
#include <libsec.h>
RSApub*
rsaprivtopub(RSApriv *priv)
{
	RSApub *pub;
	pub = rsapuballoc();
	if(pub == nil)
		return nil;
	pub->n = mpcopy(priv->pub.n);
	pub->ek = mpcopy(priv->pub.ek);
	return pub;
}