Implement proper key types

Signed-off-by: Lee Smet <lee.smet@hotmail.com>

vault/src/ethereum.bak/transaction.rs

@@ -0,0 +1,54 @@
+//! Ethereum transaction functionality.
+
+use ethers::prelude::*;
+
+use crate::vault::error::CryptoError;
+use super::wallet::EthereumWallet;
+use super::networks::NetworkConfig;
+
+/// Formats a token balance for display.
+pub fn format_balance(balance: U256, network: &NetworkConfig) -> String {
+    let wei = balance.as_u128();
+    let divisor = 10u128.pow(network.decimals as u32) as f64;
+    let token = wei as f64 / divisor;
+    
+    // Display with the appropriate number of decimal places
+    let display_decimals = std::cmp::min(6, network.decimals);
+    
+    format!("{:.*} {}", display_decimals as usize, token, network.token_symbol)
+}
+
+/// Gets the balance of an Ethereum address.
+pub async fn get_balance(provider: &Provider<Http>, address: Address) -> Result<U256, CryptoError> {
+    provider.get_balance(address, None)
+        .await
+        .map_err(|e| CryptoError::SerializationError(format!("Failed to get balance: {}", e)))
+}
+
+/// Sends Ethereum from one address to another.
+pub async fn send_eth(
+    wallet: &EthereumWallet,
+    provider: &Provider<Http>,
+    to: Address,
+    amount: U256,
+) -> Result<H256, CryptoError> {
+    // Create a client with the wallet
+    let client = SignerMiddleware::new(
+        provider.clone(),
+        wallet.wallet.clone(),
+    );
+    
+    // Create the transaction
+    let tx = TransactionRequest::new()
+        .to(to)
+        .value(amount)
+        .gas(21000);
+    
+    // Send the transaction
+    let pending_tx = client.send_transaction(tx, None)
+        .await
+        .map_err(|e| CryptoError::SerializationError(format!("Failed to send transaction: {}", e)))?;
+    
+    // Return the transaction hash instead of waiting for the receipt
+    Ok(pending_tx.tx_hash())
+}