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(Mono C#) Convert ASN.1 to/from Binary DER, XML, and Base64Demonstrates how to convert ASN.1 from and to any of the following formats: binary DER, Base64, and XML.
Chilkat.Asn asn = new Chilkat.Asn(); bool success; // Begin with loading ASN.1 from a binary DER/BER format file. success = asn.LoadBinaryFile("/Users/chilkat/testData/p7b/test.p7b"); if (success != true) { Debug.WriteLine(asn.LastErrorText); return; } // Convert ASN.1 to XML: string strXml = asn.AsnToXml(); if (asn.LastMethodSuccess != true) { Debug.WriteLine(asn.LastErrorText); return; } // The XML returned by AsnToXml will be compact and not pretty-formatted. // Use Chilkat XML to format the XML better: Chilkat.Xml xml = new Chilkat.Xml(); success = xml.LoadXml(strXml); // Assuming success for this example.. // This is formatted better for human viewing: Debug.WriteLine(xml.GetXml()); // Now get the ASN.1 in base64 format. Any encoding supported // by Chilkat can be passed, such as "hex", "uu", "quoted-printable", "base32", "modbase64", etc. string strBase64 = asn.GetEncodedDer("base64"); // Load the ASN.1 from XML: Chilkat.Asn asn2 = new Chilkat.Asn(); success = asn2.LoadAsnXml(xml.GetXml()); if (success != true) { Debug.WriteLine(asn2.LastErrorText); return; } // Load the ASN.1 from an encoded string, such as base64: Chilkat.Asn asn3 = new Chilkat.Asn(); success = asn3.LoadEncoded(strBase64,"base64"); if (success != true) { Debug.WriteLine(asn3.LastErrorText); return; } |
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