如何从.p7b文件获取证书

Question

任何人都可以帮助如何从C＃和BouncyCastle中的.p7b文件中提取证书吗？

Answer 1

var certificateStore = new CmsSignedData(new FileStream("chain.p7b", FileMode.Open)); 
IX509Store x509Certs = certificateStore.GetCertificates("Collection"); 
ArrayList a = new ArrayList(x509Certs.GetMatches(null)); 
X509Certificate signerCert = (X509Certificate) a[0]; 

var gen = new CmsSignedDataGenerator(); 
gen.AddCertificates(x509Certs); 
gen.AddSigner(_privateKey, signerCert, CmsSignedGenerator.DigestSha1); 

CmsProcessable msg = new CmsProcessableByteArray(Encoding.ASCII.GetBytes(FullUnsignedMessage)); 

CmsSignedData signedData = gen.Generate(msg, true);