a

libmp/crttest.c

@@ -0,0 +1,54 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+void
+testcrt(mpint **p)
+{
+	CRTpre *crt;
+	CRTres *res;
+	mpint *m, *x, *y;
+	int i;
+
+	fmtinstall('B', mpconv);
+
+	// get a modulus and a test number
+	m = mpnew(1024+160);
+	mpmul(p[0], p[1], m);
+	x = mpnew(1024+160);
+	mpadd(m, mpone, x);
+
+	// do the precomputation for crt conversion
+	crt = crtpre(2, p);
+
+	// convert x to residues
+	res = crtin(crt, x);
+
+	// convert back
+	y = mpnew(1024+160);
+	crtout(crt, res, y);
+	print("x %B\ny %B\n", x, y);
+	mpfree(m);
+	mpfree(x);
+	mpfree(y);
+}
+
+void
+main(void)
+{
+	int i;
+	mpint *p[2];
+	long start;
+
+	start = time(0);
+	for(i = 0; i < 10; i++){
+		p[0] = mpnew(1024);
+		p[1] = mpnew(1024);
+		DSAprimes(p[0], p[1], nil);
+		testcrt(p);
+		mpfree(p[0]);
+		mpfree(p[1]);
+	}
+	print("%d secs with more\n", time(0)-start);
+	exits(0);
+}