信任证书

信任证书分为两个步骤：

指定证书的信任路径(文件夹)，该路径将作为信任证书时放置证书的路径，同时在检查证书是否可信时也会在该文件夹下寻找对应证书。请确保该路径是有效的，当该路径不存在或无法访问时，ComPDFKit SDK 不会自动创建信任路径文件夹。
执行信任证书的方法，证书将会被添加到信任路径下。

信任证书关键代码如下：

swiftobjective-c

swift

if let url = Bundle.main.url(forResource: "filename", withExtension: "pdf") {
    let document = CPDFDocument(url: url)
    
    if let signatures = document?.signatures, let signature = signatures.first,
       let signer = signature.signers.first, let certificate = signer.certificates.first {
        
        certificate.checkCertificateIsTrusted()
        let success = certificate.addToTrustedCertificates()
        certificate.checkCertificateIsTrusted()
    }
}

objective-c

NSURL *url = [NSURL fileURLWithPath:@"file path"];

CPDFDocument *document = [[CPDFDocument alloc] initWithURL:url];

NSArray *signatures = [document signatures];

CPDFSignature *signature = signatures[0];
CPDFSigner *signer = signature.signers.firstObject;
CPDFSignatureCertificate * certificate = signer.certificates.firstObject;

[certificate checkCertificateIsTrusted];
BOOL success = [certificate addToTrustedCertificates];
[certificate checkCertificateIsTrusted];

信任证书 ​

信任证书