I'm trying to use iText to encrypt documents using public keys and the
PdfStamper
This is what I have tried:
Certificate[] certs = certificateStream == null ? null :
(Certificate[])CertificateFactory.getInstance("X.509").
generateCertificates(certificateStream).
toArray( new Certificate[]{} );
PdfStamper stamp = new PdfStamper(new
PdfReader(input), out);
stamp.setEncryption(certs, permissions,1 );
stamp.close();
but the stamp.setEncryption call fails with the following:
Exception in thread "main" ExceptionConverter:
java.security.NoSuchAlgorithmException: 1.2.840.113549.3.2
AlgorithmParameterGenerator not available
at sun.security.jca.GetInstance.getInstance(GetInstance.java:158)
at java.security.Security.getImpl(Security.java:691)
at
java.security.AlgorithmParameterGenerator.getInstance(AlgorithmParameterGenerator.java:129)
at
com.lowagie.text.pdf.PdfPublicKeySecurityHandler.createDERForRecipient(Unknown
Source)
at
com.lowagie.text.pdf.PdfPublicKeySecurityHandler.getEncodedRecipient(Unknown
Source)
at com.lowagie.text.pdf.PdfEncryption.getEncryptionDictionary(Unknown
Source)
at com.lowagie.text.pdf.PdfWriter.setEncryption(Unknown Source)
at com.lowagie.text.pdf.PdfStamper.setEncryption(Unknown Source)
at
com.multisupport.util.security.Pdfencryptor.encryptPdf(Pdfencryptor.java:95)
at
com.multisupport.util.security.Pdfencryptor.main(Pdfencryptor.java:46)
any hints ??
Best Regards
Hans Lund
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