> ## Documentation Index
> Fetch the complete documentation index at: https://hedera-0c6e0218-mintlify-30c4f391.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Generate a new key pair

## ECDSA (secp256k1\_)

Create a new ***ECDSA*** (secp256k1) key pair used to sign transactions and queries on a Hedera network. The private key is kept confidential and is used to sign transactions that modify the state of an account, topic, token, smart contract, or file entity on the network. The public key can be shared with other users on the network.

| **Method**                                                             | **Type**   | **Description**                                          |
| ---------------------------------------------------------------------- | ---------- | -------------------------------------------------------- |
| `PrivateKey.generateECDSA()`                                           | PrivateKey | Generates an ECSDA private key                           |
| `PrivateKey.generateECDSA().getPublicKey()`                            | PublicKey  | Derive a public key from this ECDSA private key          |
| `PrivateKey.generateECDSA().publicKey()`                               | PublicKey  | Derive a public key from this ECDSA private key          |
| `PrivateKey.generateECDSA().publicKey().toAccountId(<shard>, <realm>)` | long, long | Contructs an account ID from an account alias public key |

<CodeGroup>
  ```java Java theme={null}
  PrivateKey privateKey = PrivateKey.generateECDSA();
  PublicKey publicKey = privateKey.getPublicKey();

  System.out.println("private key = " + privateKey);
  System.out.println("public key = " + publicKey);
  ```

  ```javascript JavaScript theme={null}
  const privateKey = await PrivateKey.generateECDSAAsync();
  const publicKey = privateKey.publicKey;

  console.log("private key = " + privateKey);
  console.log("public key = " + publicKey);
  ```

  ```go Go theme={null}
  privateKey, err := hedera.GenerateEcdsaPrivateKey()
  if err != nil {
      panic(err)
  }

  publicKey := privateKey.PublicKey()

  fmt.Printf("private key = %v\n", privateKey)
  fmt.Printf("public key = %v\n", publicKey)
  ```

  ```rust Rust theme={null}
  // Generate ED25519 key pair
  let private_key = PrivateKey::generate_ed25519()?;
  let public_key = private_key.public_key();

  println!("private key = {:?}", private_key);
  println!("public key = {:?}", public_key);

  // Generate ECDSA key pair
  let private_key = PrivateKey::generate_ecdsa()?;
  let public_key = private_key.public_key();

  println!("private key = {:?}", private_key);
  println!("public key = {:?}", public_key);

  // v0.34.0
  ```
</CodeGroup>

**Sample Output:**

```bash theme={null}
private key = 3030020100300706052b8104000a042204205edee337f333dbf6ae3e0b1e1298cbe1fe37faf47b9faed326a3917b0e828891
public key = 302d300706052b8104000a03220002e1f3b3bad1e0d97ed129725efaa4fc0289735a9f355438d2619676f1ff3f30dd
```

## ED25519

Create a new ***ED25519*** key pair used to sign transactions and queries on the Hedera network. The private key is kept confidential and is used to sign transactions that modify the state of an account, topic, token, smart contract, or file entity on the network. The public key can be shared with other users on the network.

| **Method**                                                              | **Type**   | **Description**                                              |
| ----------------------------------------------------------------------- | ---------- | ------------------------------------------------------------ |
| `PrivateKey.generateED25519()`                                          | PrivateKey | Generates an Ed25519 private key                             |
| `PrivateKey.generateED25519().getPublicKey()`                           | PublicKey  | Derive a public key from this Ed25519 private key            |
| `PrivateKey.generateED25519().publicKey()`                              | PublicKey  | Derive a public key from this Ed25519 private key            |
| `PrivateKey.generateED25519().publicKey().toAccountId(<shard>,<realm>)` | long, long | Contruct an alias account ID from a alias public key address |
| **`[DEPRECATED]`**`PrivateKey.generate()`                               | PrivateKey | Generates an Ed25519 private key                             |

<CodeGroup>
  ```java Java theme={null}
  PrivateKey privateKey = PrivateKey.generateED25519();
  PublicKey publicKey = privateKey.getPublicKey();

  System.out.println("private key = " + privateKey);
  System.out.println("public key = " + publicKey);
  ```

  ```javascript JavaScript theme={null}
  const privateKey = await PrivateKey.generateED25519Async();
  const publicKey = privateKey.publicKey;

  console.log("private key = " + privateKey);
  console.log("public key = " + publicKey);
  ```

  ```go Go theme={null}
  privateKey, err := hedera.GenerateEd25519PrivateKey()
  if err != nil {
      panic(err)
  }

  publicKey := privateKey.PublicKey()

  fmt.Printf("private key = %v\n", privateKey)
  fmt.Printf("public key = %v\n", publicKey)
  ```

  ```rust Rust theme={null}
  // Generate ED25519 key pair
  let private_key = PrivateKey::generate_ed25519()?;
  let public_key = private_key.public_key();

  println!("private key = {:?}", private_key);
  println!("public key = {:?}", public_key);

  // Generate ECDSA key pair
  let private_key = PrivateKey::generate_ecdsa()?;
  let public_key = private_key.public_key();

  println!("private key = {:?}", private_key);
  println!("public key = {:?}", public_key);

  // v0.34.0
  ```
</CodeGroup>

**Sample Output:**

```
private key = 302e020100300506032b657004220420b9c3ebac81a72aafa5490cc78111643d016d311e60869436fbb91c73307ed35a
public key = 302a300506032b65700321001a5a62bb9f35990d3fea1a5bb7ef6f1df0a297697adef1e04510c9d4ecc5db3f
```