iText Java v7.1.8不支持RSASSA-PSS加密算法？要进行签名验证吗？

Question

我正在尝试验证使用RSASSA-PSS算法签名的PDF。我收到此错误，使我认为iText（EncryptionAlgorithms）中缺乏支持。

错误：

java.security.NoSuchAlgorithmException: SHA256with1.2.840.113549.1.1.10 Signature not available

代码：

import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.signatures.EncryptionAlgorithms;
import com.itextpdf.signatures.PdfPKCS7;
import com.itextpdf.signatures.SignatureUtil;

public void verifySignature(byte[] pdf, List<PublicKey> storedPublicKeys) throws PdfSignatureVerificationException {
        try (final PdfReader pdfReader = new PdfReader(new ByteArrayInputStream(pdf))) {
            PdfDocument doc = new PdfDocument(pdfReader);
            SignatureUtil signatureUtil = new SignatureUtil(doc);
            List<String> names = signatureUtil.getSignatureNames();
            if (names == null || names.isEmpty()) {
                throw new PdfSignatureVerificationException("Pdf is not signed");
            }
            verifySignatures(signatureUtil, names, storedPublicKeys);
        } catch (IOException e) {
            throw new PdfSignatureVerificationException("Cannot parse PDF data into pdf file.", e);
        }
    }

private void verifySignatures(SignatureUtil signUtil, List<String> names, List<PublicKey> storedPublicKeys) throws PdfSignatureVerificationException {

        for (String name : names) {
            PdfPKCS7 pkcs7 = signUtil.readSignatureData(name);

            try {
                if (!pkcs7.verifySignatureIntegrityAndAuthenticity()) {
                    throw new PdfSignatureVerificationException("Signature not valid");
                }
            } catch (GeneralSecurityException e) {
                throw new PdfSignatureVerificationException("Signature not valid", e);
            }    
        }
    }

Answer 1

发现最新版本7.1.11仍然存在相同的问题。可以有人（@figolino）共享解决方案。