Get certificate Chain from P7B file
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Get certificate Chain from P7B file
How can I get the certificate chain from P7B file.
P7B file only contains the certificate and public key. I wanted to get the certificate chain and attach signature to pdf file. I am using Bouncy Castle library for this.
Any help would be appreciated.
Possible duplicate of Extracting individual .cer certificate from a .p7b file in java
– Robert
Aug 6 at 12:03
1 Answer
1
The import of a p7b file depends on the format of the file. If it is the DER format, this code should work:
List<X509Certificate> certList = new List<X509Certificate>();
var signedData = File.ReadAllBytes(filepath);
CmsSignedData s = new CmsSignedData(signedData);
IX509Store certs = s.GetCertificates("Collection");
ICollection cCol = certs.GetMatches(null);
var cEn = cCol.GetEnumerator();
while (cEn.MoveNext())
certList.Add((X509Certificate)cEn.Current);
return certList;
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That's a rather quick error, so the file is possibly in the wrong format? We cannot tell, we don't see the file.
– Maarten Bodewes
Aug 2 at 19:45