initial version of SQIsign

Co-authored-by: Jorge Chavez-Saab <jorgechavezsaab@gmail.com>
Co-authored-by: Maria Corte-Real Santos <36373796+mariascrs@users.noreply.github.com>
Co-authored-by: Luca De Feo <github@defeo.lu>
Co-authored-by: Jonathan Komada Eriksen <jonathan.eriksen97@gmail.com>
Co-authored-by: Basil Hess <bhe@zurich.ibm.com>
Co-authored-by: Antonin Leroux <18654258+tonioecto@users.noreply.github.com>
Co-authored-by: Patrick Longa <plonga@microsoft.com>
Co-authored-by: Lorenz Panny <lorenz@yx7.cc>
Co-authored-by: Francisco Rodríguez-Henríquez <francisco.rodriguez@tii.ae>
Co-authored-by: Sina Schaeffler <108983332+syndrakon@users.noreply.github.com>
Co-authored-by: Benjamin Wesolowski <19474926+Calodeon@users.noreply.github.com>

src/ec/ref/ecx/test/test_extras.h

@@ -0,0 +1,29 @@
+
+#ifndef TEST_EXTRAS_H
+#define TEST_EXTRAS_H
+
+#include <time.h>
+#include <stdlib.h>
+#include <fp.h>
+#include <fp2.h>
+#include <curve_extras.h>
+
+#define PASSED    0
+#define FAILED    1
+    
+// Access system counter for benchmarking
+//int64_t cpucycles(void);
+
+// Comparing "nword" elements, a=b? : (1) a!=b, (0) a=b
+int compare_words(digit_t* a, digit_t* b, unsigned int nwords);
+
+// Multiprecision subtraction for testing, assumes a > b
+void sub_test(digit_t* out, digit_t* a, digit_t* b, unsigned int nwords);
+
+// Generating a pseudo-random field element in [0, p-1] 
+void fprandom_test(digit_t* a);
+
+// Generating a pseudo-random element in GF(p^2)
+void fp2random_test(fp2_t* a);
+
+#endif