Dear all,
I'm trying to sign a bunch of PDF documents using a PKCS12 keystore.
Using the great HowToSign tutorial I already managed to do this in no
time. However, once I try to do the same with a PKSC12 containing keys
that use elliptic curves (EC), I get the following error:
ExceptionConverter: java.security.NoSuchAlgorithmException: Unknown Key
Algorithm EC
at com.lowagie.text.pdf.PdfPKCS7.<init>(PdfPKCS7.java:401)
at
com.lowagie.text.pdf.PdfSigGenericPKCS.setSignInfo(PdfSigGenericPKCS.java:97)
at
com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignatureAppearance.java:787)
at
com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignatureAppearance.java:717)
at com.lowagie.text.pdf.PdfStamper.close(PdfStamper.java:200)
at org.emayor.softsigner.SoftSignerOld.sign(SoftSignerOld.java:174)
at org.emayor.softsigner.SoftSignerOld.main(SoftSignerOld.java:60)
Could not inject signature: Unknown Key Algorithm EC
I've managed to produce a P7M with the same key using only BouncyCastle,
so I assume at some point iText uses its own logic for these things.
I've also tried to force the provider used by doing
PdfSignatureAppearance sap = stp.getSignatureAppearance();
sap.setProvider( BouncyCastleProvider.PROVIDER_NAME );
but that doesn't solve this issue. Any comments on how I could get this
working?
Thanks in advance,
Max
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