More detailed debug output for computing the shared secret key

Sources/Cbsspeke/bsspeke.c

@@ -385,6 +385,8 @@ bsspeke_client_derive_shared_key(const uint8_t B[32],
 {
     // Compute the two Diffie-Hellman shared secrets 
     debug(LOG_DEBUG, "Computing Diffie-Hellman shared secrets");
+    print_point("A", client->A);
+    print_point("B", B);
     // DH shared secret from a * B
     uint8_t a_B[32];
     crypto_x25519(a_B, client->a, B);
@@ -441,6 +443,8 @@ bsspeke_server_derive_shared_key(const uint8_t A[32],
     debug(LOG_DEBUG, "Computing Diffie-Hellman shared secrets");
     // DH shared secret from b * A
     uint8_t b_A[32];
+    print_point("A", A);
+    print_point("B", server->B);
     crypto_x25519(b_A, server->b, A);
     print_point("b * A", b_A);
     // DH shared secret from b * V