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Martin Menzel's List: Digitale Signatur
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http://www.thawte.de/
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/** * Modyfy PKCS#7 data by adding timestamp * * (at) param signedData * (at) throws Exception */ private static CMSSignedData addTimestamp(CMSSignedData signedData) throws Exception { Collection ss = signedData.getSignerInfos().getSigners(); SignerInformation si = (SignerInformation) ss.iterator().next(); TimeStampToken tok = getTimeStampToken(1); ASN1InputStream asn1InputStream = new ASN1InputStream (tok.getEncoded()); DERObject tstDER = asn1InputStream.readObject(); DERSet ds = new DERSet(tstDER); Attribute a = new Attribute(new DERObjectIdentifier("1.2.840.113549.1.9.16.2.14"), ds); DEREncodableVector dv = new DEREncodableVector(); dv.add(a); AttributeTable at = new AttributeTable(dv); si = SignerInformation.replaceUnsignedAttributes(si, at); ss.clear(); ss.add(si); SignerInformationStore sis = new SignerInformationStore(ss); signedData = CMSSignedData.replaceSigners(signedData, sis); return signedData; }
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application/timestamp-query
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http://ns.szikszi.hu:8080/tsa
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