Refactor, improved readability

main.cpp

@@ -0,0 +1,83 @@
+//
+// Created by Andrew on 01/06/2023.
+//
+
+#include "header.h"
+
+char charset[] = "BCDFGHJKMPQRTVWXY2346789";
+
+int main()
+{
+    initBink();
+
+    rand();
+    srand(time(nullptr));
+    rand();
+
+    // Init
+    BIGNUM *a, *b, *p, *gx, *gy, *pubx, *puby, *n, *priv;
+    BN_CTX *ctx = BN_CTX_new();
+
+    // make BigNumbers
+    a = BN_new();
+    b = BN_new();
+    p = BN_new();
+    gx = BN_new();
+    gy = BN_new();
+    pubx = BN_new();
+    puby = BN_new();
+    n = BN_new();
+    priv = BN_new();
+
+    char* BINKID = "2E";
+
+    // Data from pidgen-Bink-resources
+    /* Elliptic curve parameters: y^2 = x^3 + ax + b mod p */
+    BN_dec2bn(&p,    std::get<0>(BINKData[BINKID].E).c_str());
+    BN_dec2bn(&a,    std::get<1>(BINKData[BINKID].E).c_str());
+    BN_dec2bn(&b,    std::get<2>(BINKData[BINKID].E).c_str());
+
+
+    /* base point (generator) G */
+    BN_dec2bn(&gx,   std::get<0>(BINKData[BINKID].G).c_str());
+    BN_dec2bn(&gy,   std::get<1>(BINKData[BINKID].G).c_str());
+
+    /* inverse of public key */
+    BN_dec2bn(&pubx, std::get<0>(BINKData[BINKID].K).c_str());
+    BN_dec2bn(&puby, std::get<1>(BINKData[BINKID].K).c_str());
+
+    // Computed data
+    /* order of G - computed in 18 hours using a P3-450 */
+    BN_dec2bn(&n,    BINKData[BINKID].n.c_str());
+
+    /* THE private key  - computed in 10 hours using a P3-450 */
+    BN_dec2bn(&priv, BINKData[BINKID].k.c_str());
+
+    // Calculation
+    EC_GROUP *ec = EC_GROUP_new_curve_GFp(p, a, b, ctx);
+    EC_POINT *g = EC_POINT_new(ec);
+    EC_POINT_set_affine_coordinates_GFp(ec, g, gx, gy, ctx);
+    EC_POINT *pub = EC_POINT_new(ec);
+    EC_POINT_set_affine_coordinates_GFp(ec, pub, pubx, puby, ctx);
+
+    char pkey[26];
+    ul32 pid[1];
+    pid[0] = 640 * 1000000 ; /* <- change */
+    pid[0] += rand() & 999999;
+
+    printf("> PID: %lu\n", pid[0]);
+
+    // generate a key
+    BN_sub(priv, n, priv);
+    generateXPKey(pkey, ec, g, n, priv, pid);
+    print_product_key(pkey);
+    printf("\n\n");
+
+    // verify the key
+    verifyXPKey(ec, g, pub, (char*)pkey);
+
+    // Cleanup
+    BN_CTX_free(ctx);
+
+    return 0;
+}