real-api-3003.js

const express = require('express');
const { spawn } = require('child_process');
const fs = require('fs');
const cors = require('cors');

const app = express();
app.use(cors());
app.use(express.json());

const BINARY_PATH = './dilithium-zkvm/target/release/host';

app.post('/api/generate-keypair', (req, res) => {
    const process = spawn(BINARY_PATH, ['generate-keypair']);
    let output = '';
    let error = '';
    
    process.stdout.on('data', (data) => output += data.toString());
    process.stderr.on('data', (data) => error += data.toString());
    
    process.on('close', (code) => {
        if (code === 0) {
            try {
                const publicKey = fs.readFileSync('public_key.bin');
                const crypto = require('crypto');
                const hash = crypto.createHash('sha256').update(publicKey).digest('hex');
                res.json({ success: true, publicKeyHash: hash, output });
            } catch (err) {
                res.json({ success: false, error: err.message });
            }
        } else {
            res.json({ success: false, error: error || 'Key generation failed' });
        }
    });
});

app.post('/api/sign', (req, res) => {
    const { message } = req.body;
    const process = spawn(BINARY_PATH, ['sign', '--private-key', 'private_key.bin', '--message', message, '--output', 'signature.bin']);
    let output = '';
    let error = '';
    
    process.stdout.on('data', (data) => output += data.toString());
    process.stderr.on('data', (data) => error += data.toString());
    
    process.on('close', (code) => {
        if (code === 0) {
            try {
                const signature = fs.readFileSync('signature.bin');
                res.json({ success: true, signature: signature.toString('hex'), output });
            } catch (err) {
                res.json({ success: false, error: err.message });
            }
        } else {
            res.json({ success: false, error: error || 'Signing failed' });
        }
    });
});

app.post('/api/verify', (req, res) => {
    const { message } = req.body;
    const process = spawn(BINARY_PATH, ['verify', '--public-key', 'public_key.bin', '--signature', 'signature.bin', '--message', message, '--output', 'receipt.bin']);
    let output = '';
    let error = '';
    
    process.stdout.on('data', (data) => output += data.toString());
    process.stderr.on('data', (data) => error += data.toString());
    
    process.on('close', (code) => {
        if (code === 0) {
            const extractProcess = spawn(BINARY_PATH, ['extract', '--receipt', 'receipt.bin', '--format', 'hex']);
            let extractOutput = '';
            
            extractProcess.stdout.on('data', (data) => extractOutput += data.toString());
            extractProcess.on('close', () => {
                try {
                    const lines = extractOutput.trim().split('\n');
                    const journal = lines.find(l => l.startsWith('journal:')).split(': ')[1];
                    const seal = lines.find(l => l.startsWith('seal:')).split(': ')[1];
                    res.json({ success: true, proof: { journal, seal, isValid: true }, output });
                } catch (err) {
                    res.json({ success: false, error: 'Failed to extract proof data' });
                }
            });
        } else {
            res.json({ success: false, error: error || 'Verification failed' });
        }
    });
});

app.listen(3003, () => {
    console.log('REAL API server running on port 3003');
});