我目前能够解码 CSR 的值(请求的扩展除外),特别是X509v3 Subject Alternative Name
。这是相关部分
我的“DecodeCSR(字符串 csr):
public void DecodeCsr(string csrStr){
//getting just csr
var csrChars = Regex.Replace(csrStr, @"-----[^-]+-----", "").Trim().Replace(" ", "").Replace(Environment.NewLine, "").ToCharArray();
//converting that string into a byte array
byte[] csrEncode = Convert.FromBase64CharArray(csrChars, 0, csrChars.Length);
//giving decodeCsr the byte array
Pkcs10CertificationRequest decodeCsr = new Pkcs10CertificationRequest(csrEncode);
//getting a string of subject information
string subject = decodeCsr.GetCertificationRequestInfo().Subject.ToString();
//here's how I'm getting a DerSet of attribute
DerSet atts = (DerSet)decodeCsr.GetCertificationRequestInfo().Attributes;
}
以下是 SAN 的测试 CSR:
string csr = "-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----";
我可以得到的信息decodeCsr.GetCertificationRequestInfo().Attributes
is an Org.BouncyCastle.Asn1.DerSet
看起来像这样:
DerSet atts = (DerSet)decodeCsr.GetCertificationRequestInfo().Attributes;
这是调试模式下的样子(下面是整个对象的图片):
atts {[[1.2.840.113549.1.9.14, [[[2.5.29.17, #3026820a61757374696e2e636f6d820b61757374696e322e636f6d820b61757374696e342e636f6d]]]]]} Org.BouncyCastle.Asn1.DerSet
我可以看到DerOctetString处于调试模式,但是我不知道如何实现它。我相信,如果我能做到这一点,雨果的答案可能适用,有一个DerOctetStringParser
但目前我没有什么可以给予的。
我尝试过治疗atts
作为删除的字符串,OID 得到的值与DerOctetString
在调试模式下并将其转换为DerOctetString
那不起作用,而且我不认为这个答案可以很好地扩展。