Use Crypto Utilities

You can work with the Private Key, Public Key, or Address methods.

Private Key

You can create a private key from:

• Seed phrase.
• Randomly generated seed phrase.
• Randomly generated seed phrase with nonce 2.
• Seed bytes.
• Randomly generated seed bytes.
• Bytes.
• Encoded string.

Create Private Key from Seed Phrase

package com.example;

// Necessary import.
import com.wavesplatform.transactions.account.PrivateKey;

public class CreatePrivateKeyFromSeedPhrase {
    public static void main(String[] args) {
		// Specify your account's seed phrase.
        String seedPhrase = "PASTE A SEED PHRASE";

		// Creation of the private key from the seed phrase.
        PrivateKey accountPrivateKey = PrivateKey.fromSeed(seedPhrase);

		// Print the output.
        System.out.println("Sender's Private Key: " + accountPrivateKey);
    }
}

Generate Random Seed Phrase and Private Key

package com.example;

// Necessary imports.
import com.wavesplatform.crypto.Crypto;
import com.wavesplatform.transactions.account.PrivateKey;

public class GenerateRandomPrivateKey {
    public static void main(String[] args) {
		// Generaton of a random seed phrase.
        String seed = Crypto.getRandomSeedPhrase();

		// Creation of the private key from the seed phrase.
        PrivateKey senderPrivateKey = PrivateKey.fromSeed(seed);

		// Print the output.
        System.out.println("Seed Phrase: " + seed);
        System.out.println("Sender's Private Key: " + senderPrivateKey);
    }
}

Generate Random Seed Phrase with Nonce 2

package com.example;

// Necessary imports.
import com.wavesplatform.crypto.Crypto;
import com.wavesplatform.transactions.account.PrivateKey;

public class GeneratePrivateKeyWithNonce2 {
    public static void main(String[] args) {
		// Generaton of a random seed phrase.
        String seed = Crypto.getRandomSeedPhrase();

		// Creation of the private key from the seed phrase, with the nonce equal to 2.
        PrivateKey senderPrivateKey = PrivateKey.fromSeed(seed, 2);

		// Print the output.
        System.out.println("Seed Phrase: " + seed);
        System.out.println("Sender's Private Key: " + senderPrivateKey);
    }
}

Create Private Key from Seed Bytes

package com.example;

// Necessary import.
import com.wavesplatform.transactions.account.PrivateKey;

public class CreatePrivateKeyFromSeedBytes {
    public static void main(String[] args) {
		// Creation of a byte array.
        byte[] seed = new byte[] { 1, 2, 3, 4, 5, 6, 7 }; // Byte array example.

		// Creation of the private key from the seed bytes.
        PrivateKey privateKeyFromBytes = PrivateKey.fromSeed(seed);

		// Print the output.
        System.out.println("Sender's Private Key: " + privateKeyFromBytes);
    }
}

Create Private Key from Randomly Generated Seed Bytes

package com.example;

// Necessary imports.
import com.wavesplatform.crypto.Crypto;
import com.wavesplatform.transactions.account.PrivateKey;

public class CreatePrivateKeyFromRandomSeedBytes {
    public static void main(String[] args) {
		// Generation of random seed bytes.
        byte[] randomSeedBytes = Crypto.getRandomSeedBytes();

		// Creation of the private key from the randomly generated seed bytes.
        PrivateKey senderPrivateKey = PrivateKey.fromSeed(randomSeedBytes);

		// Print the output.
        System.out.println("Sender's Private Key: " + senderPrivateKey);
    }
}

Create Private Key from Bytes

package com.example;

// Necessary import.
import com.wavesplatform.transactions.account.PrivateKey;

public class CreatePrivateKeyFromBytes {
    public static void main(String[] args) {
		// Creation of a byte array.
        byte[] bytes = {56, -3, 37, 64, 2, 38, 78, 37, -98, -45, -23, 117, 14, 88, 20, 42, -9, 21, 55, 87, 117, -8, -81, 77, 77, -99, -87, -23, 7, 116, -99, -20}; // Bytes example.

		// Creation of the private key from the bytes.
        PrivateKey senderPrivateKey = PrivateKey.as(bytes);

		// Print the output.
        System.out.println("Sender's Private Key: " + senderPrivateKey);
    }
}

Create Private Key from an Encoded String

package com.example;

// Necessary import.
import com.wavesplatform.transactions.account.PrivateKey;

public class CreatePrivateKeyFromEncodedString {
    public static void main(String[] args) {
		// Creation of a Base58 string.
        String base58String = "A5u9Ugt2nG1rWfLkL7pzZrtkP8LgF2rD3g1XBjsF8ZzV"; // Base58 string example.

		// Creation of the private key from the encoded string.
        PrivateKey senderPrivateKey = PrivateKey.as(base58String);

		// Print the output.
        System.out.println("Sender's Private Key: " + senderPrivateKey);
    }
}

Public Key

You can create a public key from a private key:

1. Generate the private key.
2. Place the following code after the private key generation:

   // Create the public key from the private key.
   PublicKey publicKey = privateKey.publicKey();
   
   // Print the pubic key.
   System.out.println("Sender's Public Key: " + publicKey);
   

Address

You can create an address from a public key:

1. Generate the public key.

2. Place the following code after the public key generation:

   NOTE: Ensure importing the following dependencies: import com.wavesplatform.transactions.common.ChainId; import com.wavesplatform.transactions.account.Address;

   /* 
    * Define the network of your wallet:
    * - Use `ChainId.MAINNET` for Mainnet.
    * - Use `ChainId.TESTNET` for Testnet.
    * - Use `ChainId.STAGENET` for StageNet.
    */
   
   Address senderAddress = Address.from(ChainId.TESTNET, senderPublicKey);
   
   System.out.println("Sender's Address: " + senderAddress);