First commit on a late git install

2025-08-09 10:23:28 -04:00
commit ca6b4754f9
88 changed files with 18219 additions and 0 deletions
--- a/examples/mnemonic_derivation.c
+++ b/examples/mnemonic_derivation.c
@@ -0,0 +1,57 @@
+/*
+ * Example: Key Derivation from Existing Mnemonic
+ * Demonstrates nostr_derive_keys_from_mnemonic()
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "nostr_core.h"
+
+int main() {
+    printf("=== NOSTR Key Derivation from Mnemonic Example ===\n\n");
+    
+    // Initialize the library
+    if (nostr_init() != NOSTR_SUCCESS) {
+        fprintf(stderr, "Failed to initialize NOSTR library\n");
+        return 1;
+    }
+    
+    // Use a well-known test mnemonic
+    const char* test_mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about";
+    
+    printf("Using test mnemonic: %s\n\n", test_mnemonic);
+    
+    // Derive keys for multiple accounts
+    for (int account = 0; account < 3; account++) {
+        unsigned char private_key[NOSTR_PRIVATE_KEY_SIZE];
+        unsigned char public_key[NOSTR_PUBLIC_KEY_SIZE];
+        
+        int result = nostr_derive_keys_from_mnemonic(test_mnemonic, account, 
+                                                    private_key, public_key);
+        if (result != NOSTR_SUCCESS) {
+            fprintf(stderr, "Failed to derive keys for account %d: %s\n", 
+                   account, nostr_strerror(result));
+            continue;
+        }
+        
+        // Convert to bech32 format
+        char nsec[NOSTR_BECH32_KEY_SIZE];
+        char npub[NOSTR_BECH32_KEY_SIZE];
+        
+        nostr_key_to_bech32(private_key, "nsec", nsec);
+        nostr_key_to_bech32(public_key, "npub", npub);
+        
+        // Display results for this account
+        printf("Account %d (m/44'/1237'/%d'/0/0):\n", account, account);
+        printf("  nsec: %s\n", nsec);
+        printf("  npub: %s\n", npub);
+        printf("\n");
+    }
+    
+    // Cleanup
+    nostr_cleanup();
+    
+    printf("✓ Example completed successfully!\n");
+    printf("💡 The same mnemonic always produces the same keys (deterministic)\n");
+    return 0;
+}