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87 lines
3.5 KiB
PHP
87 lines
3.5 KiB
PHP
<?php
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/**
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* Example 1: Generating Cryptographic Keys
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*
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* This example demonstrates how to generate different types of key pairs
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* used for DID operations.
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*
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* @package FairDidManager\Examples
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*/
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declare(strict_types=1);
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use FAIR\DID\Crypto\DidCodec;
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use FAIR\DID\Keys\EcKey;
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use FAIR\DID\Keys\KeyFactory;
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require_once __DIR__ . '/../vendor/autoload.php';
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echo "=== FAIR CLI: Key Generation Examples ===\n\n";
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// -----------------------------------------------------------------------------
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// 1. Generate a secp256k1 key pair (used for rotation keys)
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// -----------------------------------------------------------------------------
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echo "1. Generating secp256k1 Key Pair (Rotation Key)\n";
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echo str_repeat( '-', 50 ) . "\n";
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$rotation_key = DidCodec::generate_key_pair();
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echo 'Public Key (multibase): ' . $rotation_key->encode_public() . "\n";
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echo 'Private Key (multibase): ' . substr( $rotation_key->encode_private(), 0, 20 ) . "...\n";
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echo 'Curve: ' . $rotation_key->get_curve() . "\n";
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echo 'Is Private Key: ' . ( $rotation_key->is_private() ? 'Yes' : 'No' ) . "\n\n";
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// -----------------------------------------------------------------------------
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// 2. Generate an Ed25519 key pair (used for verification/signing)
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// -----------------------------------------------------------------------------
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echo "2. Generating Ed25519 Key Pair (Verification Key)\n";
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echo str_repeat( '-', 50 ) . "\n";
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$verification_key = DidCodec::generate_ed25519_key_pair();
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echo 'Public Key (multibase): ' . $verification_key->encode_public() . "\n";
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echo 'Private Key (multibase): ' . substr( $verification_key->encode_private(), 0, 20 ) . "...\n";
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echo 'Curve: ' . $verification_key->get_curve() . "\n\n";
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// -----------------------------------------------------------------------------
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// 3. Reconstruct keys from encoded strings
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// -----------------------------------------------------------------------------
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echo "3. Reconstructing Keys from Encoded Strings\n";
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echo str_repeat( '-', 50 ) . "\n";
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$encoded_private = $rotation_key->encode_private();
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$reconstructed = EcKey::from_private( $encoded_private );
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echo 'Original Public: ' . $rotation_key->encode_public() . "\n";
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echo 'Reconstructed Public: ' . $reconstructed->encode_public() . "\n";
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echo 'Keys Match: ' . ( $rotation_key->encode_public() === $reconstructed->encode_public() ? 'Yes' : 'No' ) . "\n\n";
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// -----------------------------------------------------------------------------
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// 4. Sign data with keys
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// -----------------------------------------------------------------------------
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echo "4. Signing Data\n";
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echo str_repeat( '-', 50 ) . "\n";
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$message = 'Hello, FAIR Protocol!';
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$message_hash = hash( 'sha256', $message, false );
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$ec_signature = $rotation_key->sign( $message_hash );
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$eddsa_signature = $verification_key->sign( $message_hash );
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echo "Message: {$message}\n";
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echo 'EC Signature (hex): ' . substr( $ec_signature, 0, 40 ) . "...\n";
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echo 'EdDSA Signature (hex): ' . substr( $eddsa_signature, 0, 40 ) . "...\n\n";
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// -----------------------------------------------------------------------------
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// 5. Convert to did:key format
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// -----------------------------------------------------------------------------
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echo "5. Converting to did:key Format\n";
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echo str_repeat( '-', 50 ) . "\n";
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$did_key_rotation = KeyFactory::encode_did_key( $rotation_key );
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$did_key_verification = KeyFactory::encode_did_key( $verification_key );
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echo 'Rotation Key as did:key: ' . $did_key_rotation . "\n";
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echo 'Verification Key as did:key: ' . $did_key_verification . "\n\n";
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echo "=== Example Complete ===\n";
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