# Use Crypto Utilities

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

# Private Key

NOTE: The SDK makes private keys clamped—bit-adjusted to ensure validity and resistance to small subgroup attacks.

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

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Specify your seed phrase.
$seed = 'PASTE YOUR SEED PHRASE';

// Get the private key from the given seed phrase.
$account = PrivateKey::fromSeed($seed);
$privateKey = $account->toString();

// Print the results.
echo "Seed Phrase: $privateKey\n";
echo "Sender's Private Key: $seed\n";

# Generate Random Seed Phrase and Private Key

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Util\Functions;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Generation of a random seed phrase.
$seed = Functions::getRandomSeedPhrase();

// Get the private key from the given seed phrase.
$account = PrivateKey::fromSeed($seed);
$privateKey = $account->toString();

// Print the results.
echo "Seed Phrase: $seed\n";
echo "Sender's Private Key: $privateKey\n";

# Generate Random Seed Phrase with Nonce 2

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Util\Functions;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Generation of a random seed phrase.
$seed = Functions::getRandomSeedPhrase();

// Get the private key from the given seed phrase, using nonce = 2.
$account = PrivateKey::fromSeed($seed, 2);
$privateKey = $account->toString();

// Print the results.
echo "Seed Phrase: $seed\n";
echo "Sender's Private Key (nonce 2): $privateKey\n";

# Create Private Key from Seed Bytes

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Creation of a byte array.
$seedBytes = pack('C*', 1, 2, 3, 4, 5, 6, 7); // Array example.

// Creation of the private key from the seed bytes.
$account = PrivateKey::fromSeed($seedBytes);
$privateKey = $account->toString();

// Print the results.
echo "Sender's Private Key: $privateKey\n";

# Create Private Key from Randomly Generated Seed Bytes

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Util\Functions;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Generation of random seed bytes that are 32 bytes long.
$randomSeedBytes = random_bytes(32);

// Creation of the private key from the randomly generated seed bytes.
$account = PrivateKey::fromSeed($randomSeedBytes);
$privateKey = $account->toString();

// Print the results.
echo "Sender's Private Key: $privateKey\n";

# Create Private Key from Bytes

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Creation of a byte array.
$bytes = pack('c*', 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); // Array example.

// Creation of the private key from the byte array.
$account = PrivateKey::fromSeed($bytes);
$privateKey = $account->toString();

// Print the results.
echo "Sender's Private Key: $privateKey\n";

# Create Private Key from an Encoded String

<?php

require_once __DIR__ . '/vendor/autoload.php';

// Necessary imports.
use Waves\Account\PrivateKey;
use Waves\Util\Functions;
use Waves\Model\ChainId;
use Waves\Model\WavesConfig;

// Hide deprecated warnings temporarily.
error_reporting(E_ALL & ~E_DEPRECATED);

/* 
 * Specify the network chain ID:
 * - Mainnet:  `ChainId::MAINNET()`
 * - Testnet:  `ChainId::TESTNET()`
 * - Stagenet: `ChainId::STAGENET()`
 */
WavesConfig::chainId(ChainId::TESTNET());

// Creation of a Base58 string.
$base58String = "A5u9Ugt2nG1rWfLkL7pzZrtkP8LgF2rD3g1XBjsF8ZzV"; // Value example.

// Decode the Base58 string to raw bytes.
$decodedBytes = Functions::base58Decode($base58String);

// Creation of the private key from the decoded bytes.
$account = PrivateKey::fromSeed($decodedBytes);
$privateKey = $account->toString();

// Print the output.
echo "Sender's Private Key: $privateKey\n";

# Public Key

You can create a public key from a private key:

Generate the private key.

Place the following code after the private key generation:

// Create the public key from the private key.
$publicKey = $account->publicKey()->toString();

// Print the results.
echo "Sender's Public Key:  $publicKey\n";

# Address

You can create an address from a public key:

Generate the public key.

Place the following code after the public key generation:

// Create the address from the public key.
$address = $account->publicKey()->address()->toString();

// Print the results.
echo "Sender's Address: $address\n";