const forge = require('node-forge');

const mockP7Sign = `-----BEGIN PKCS7-----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-----END PKCS7-----`;

const originalData = 'This is the test content for PKCS7 signature.';

try {
    const p7 = forge.pkcs7.messageFromPem(mockP7Sign);
    
    console.log('=== PKCS7 信息 ===');
    console.log('type:', p7.type);
    console.log('content:', p7.content ? p7.content.getBytes() : 'null');
    console.log('certificates count:', p7.certificates ? p7.certificates.length : 0);
    
    if (p7.certificates && p7.certificates.length > 0) {
        const cert = p7.certificates[0];
        console.log('cert subject:', cert.subject.attributes.map(a => `${a.name}=${a.value}`).join(', '));
    }
    
    console.log('\n=== 尝试验证 ===');
    try {
        // 尝试验证
        const result = p7.verify();
        console.log('verify() result:', result);
    } catch (e) {
        console.log('verify() error:', e.message);
    }
    
    // 手动验证
    console.log('\n=== 手动验证 ===');
    const md = forge.md.sha256.create();
    md.update(originalData, 'utf8');
    const digest = md.digest().getBytes();
    console.log('calculated digest (hex):', forge.util.bytesToHex(digest));
    
    // 获取签名
    if (p7.rawCapture && p7.rawCapture.signature) {
        console.log('signature length:', p7.rawCapture.signature.length);
        console.log('signature (hex):', forge.util.bytesToHex(p7.rawCapture.signature).substring(0, 100) + '...');
    }
    
    // 获取公钥
    if (p7.certificates && p7.certificates.length > 0) {
        const publicKey = p7.certificates[0].publicKey;
        if (publicKey) {
            console.log('publicKey exists:', true);
            // 尝试用公钥验证
            try {
                const verified = publicKey.verify(digest, p7.rawCapture.signature);
                console.log('publicKey.verify() result:', verified);
            } catch (e) {
                console.log('publicKey.verify() error:', e.message);
            }
        }
    }
    
} catch (error) {
    console.error('Error:', error.message);
    console.error(error.stack);
}