对于itext 5,添加数字签名非常容易。其文档的链接是:http://developers.itextpdf.com/examples/security/digital-signatures-white-paper/digital-paper/digital-signatures-signatures-ychapter-2
有人可以在Itext 7中共享指向文档的链接吗?我尝试了多种无济于事的方法。在网上找不到任何链接。我可以使用并检查签名,但不能添加它。
数字签名的端口白皮书代码示例to Itext 7可以在Itext 7 Java签名示例中找到github存储库测试源包com.itextpdf.signatures.signatures.signatures,例如,简单的C2_01_Signhelloworld示例示例:
public void sign(String src, String dest,
Certificate[] chain,
PrivateKey pk, String digestAlgorithm, String provider,
PdfSigner.CryptoStandard subfilter,
String reason, String location)
throws GeneralSecurityException, IOException {
// Creating the reader and the signer
PdfReader reader = new PdfReader(src);
PdfSigner signer = new PdfSigner(reader, new FileOutputStream(dest), false);
// Creating the appearance
PdfSignatureAppearance appearance = signer.getSignatureAppearance()
.setReason(reason)
.setLocation(location)
.setReuseAppearance(false);
Rectangle rect = new Rectangle(36, 648, 200, 100);
appearance
.setPageRect(rect)
.setPageNumber(1);
signer.setFieldName("sig");
// Creating the signature
IExternalSignature pks = new PrivateKeySignature(pk, digestAlgorithm, provider);
IExternalDigest digest = new BouncyCastleDigest();
signer.signDetached(digest, pks, chain, null, null, null, 0, subfilter);
}