Add Neo to Exodus example

examples/exodus.py

@@ -0,0 +1,29 @@
+"""
+Example of keys derivation for ed25519 or nist256p1 based coins in the same way of Exodus wallet.
+
+Basically, Exodus always uses the secp256k1 curve to derive the BIP44 path, even even for coins that are not based on secp256k1.
+Then, for coins based on other curves (e.g. Algorand, Solana, Stellar, Neo ...), it uses the last derived private key as a master key to compute the public key and address.
+It's not the only wallet doing this (Atomic Wallet does the same), because in this way the developers don't have to implement other derivation schemes beside secp256k1.
+"""
+
+from bip_utils import Bip32Slip10Secp256k1, Bip39SeedGenerator, Bip44, Bip44Coins, Bip44ConfGetter
+
+
+# Mnemonic
+mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+# Generate seed from mnemonic
+seed_bytes = Bip39SeedGenerator(mnemonic).Generate()
+
+# Example with Solana (ed25519-based coin) and Neo (nist256p1-based coin)
+for coin_type in (Bip44Coins.SOLANA, Bip44Coins.NEO):
+    # Get coin index from configuration
+    coin_idx = Bip44ConfGetter.GetConfig(coin_type).CoinIndex()
+
+    # Derive the standard BIP44 path using secp256k1
+    bip32_ctx = Bip32Slip10Secp256k1.FromSeed(seed_bytes).DerivePath(f"m/44'/{coin_idx}'/0'/0/0")
+    priv_key_bytes = bip32_ctx.PrivateKey().Raw().ToBytes()
+
+    # Use the last private key as a master key, we can use Bip44 to simplify the address computation
+    bip44_ctx = Bip44.FromPrivateKey(priv_key_bytes, coin_type)
+    # Same address of Exodus
+    print(f"Address for {coin_type}: {bip44_ctx.PublicKey().ToAddress()}")