Add bn254 curve host functions

external/libff/depends/ate-pairing/test/test_point.hpp

@@ -0,0 +1,74 @@
+#pragma once
+#include "bn.h"
+
+#define PUT(x) std::cout << #x << "\t=" << (x) << std::endl;
+
+const struct Point {
+	struct G2 {
+		const char *aa;
+		const char *ab;
+		const char *ba;
+		const char *bb;
+	} g2;
+	struct G1 {
+		int a;
+		int b;
+	} g1;
+} g_pointTbl[] = {
+#ifdef BN_SUPPORT_SNARK
+	// SNARK1(b = 3)
+	{
+		{
+			"15267802884793550383558706039165621050290089775961208824303765753922461897946",
+			"9034493566019742339402378670461897774509967669562610788113215988055021632533",
+			"644888581738283025171396578091639672120333224302184904896215738366765861164",
+			"20532875081203448695448744255224543661959516361327385779878476709582931298750",
+		},
+		{
+			1, 2
+		},
+	},
+	// SNARK2(b = 82)
+	{
+		{
+			"7281644703356799059368313064438243279269372005747477888712173236228325795991",
+			"15160700668152503952980485502602536850541312794041965342451842375663084147486",
+			"13523979532236795535820810482891703536907572704519492618036353386190612673074",
+			"15929067770616689398844794432758732907995965312283969374632681891490787470887",
+		},
+		{
+			-1, 9
+		},
+	},
+#else
+	// Aranha
+	{
+		{
+			"12723517038133731887338407189719511622662176727675373276651903807414909099441",
+			"4168783608814932154536427934509895782246573715297911553964171371032945126671",
+			"13891744915211034074451795021214165905772212241412891944830863846330766296736",
+			"7937318970632701341203597196594272556916396164729705624521405069090520231616",
+		},
+		{
+			-1, 1
+		},
+	},
+#endif
+};
+
+inline const Point& selectPoint(const bn::CurveParam& cp)
+{
+#ifdef BN_SUPPORT_SNARK
+	if (cp.b != 3 && cp.b != 82) {
+		printf("not support point for b=%d\n", cp.b);
+		exit(1);
+	}
+	return g_pointTbl[cp.b == 3 ? 0 : 1];
+#else
+	if (cp != bn::CurveFp254BNb) {
+		printf("not support except for CurveFp254BNb");
+		exit(1);
+	}
+	return g_pointTbl[0];
+#endif
+}