Generate a new key pair

Generate ED25519 or ECDSA (secp256k1) key pairs with the Hedera SDK to sign transactions and queries, plus derive public keys and account aliases.

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

Java

PrivateKey privateKey = PrivateKey.generateECDSA();
PublicKey publicKey = privateKey.getPublicKey();

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

const privateKey = await PrivateKey.generateECDSAAsync();
const publicKey = privateKey.publicKey;

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

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)

// 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

Sample Output:

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

Java

PrivateKey privateKey = PrivateKey.generateED25519();
PublicKey publicKey = privateKey.getPublicKey();

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

const privateKey = await PrivateKey.generateED25519Async();
const publicKey = privateKey.publicKey;

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

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)

// 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

Sample Output:

private key = 302e020100300506032b657004220420b9c3ebac81a72aafa5490cc78111643d016d311e60869436fbb91c73307ed35a
public key = 302a300506032b65700321001a5a62bb9f35990d3fea1a5bb7ef6f1df0a297697adef1e04510c9d4ecc5db3f