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);