/// <summary>
/// get csr
/// </summary>
/// <param name="issuerName"></param>
/// <returns></returns>
public static Tuple <string, AsymmetricKeyParameter> GetCsr(string issuerName)
{
//generate KeyPair
var keyGenerator = new ECKeyPairGenerator();
ECKeyGenerationParameters pa = new ECKeyGenerationParameters(SecObjectIdentifiers.SecP256r1, new SecureRandom());
keyGenerator.Init(pa);
var keypair = keyGenerator.GenerateKeyPair();
//domain name of CSR file
X509Name principal = new X509Name(string.Format("CN={0},OU=client,O=BSN", string.IsNullOrEmpty(issuerName) ? "test02@app0001202004161020152918451" : issuerName));
//load public key
SubjectPublicKeyInfo subjectPublicKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keypair.Public);
CertificationRequestInfo info = new CertificationRequestInfo(principal, subjectPublicKeyInfo, new DerSet());
//signature
byte[] bs = ECDSAHelper.CsrSignData(info.GetEncoded(Asn1Encodable.Der), keypair.Private, pa.DomainParameters.N);
//generate csr object
Pkcs10CertificationRequest p10 = new Pkcs10CertificationRequest(new CertificationRequest
(info, new AlgorithmIdentifier(X9ObjectIdentifiers.ECDsaWithSha256),
new DerBitString(bs)).GetEncoded());
//generate csr string
Org.BouncyCastle.Utilities.IO.Pem.PemObject pemCSR = new Org.BouncyCastle.Utilities.IO.Pem.PemObject("CERTIFICATE REQUEST", p10.GetEncoded());
StringWriter str = new StringWriter();
Org.BouncyCastle.Utilities.IO.Pem.PemWriter pemCsr = new Org.BouncyCastle.Utilities.IO.Pem.PemWriter(str);
pemCsr.WriteObject(pemCSR);
pemCsr.Writer.Flush();
return(new Tuple <string, AsymmetricKeyParameter>(str.ToString(), keypair.Private));
}
public TransactionHeader(string mspid, string cert, string channelId)
{
if (cert.Contains(".pem"))
{
cert = ECDSAHelper.ReadPK(cert);
}
this.SetCreator(mspid, cert);
SetTxId(RandomHelper.GetRandomNonceByte());
this.ChannelID = channelId;
}
private static SignedProposal signProposal(Proposal proposal, string prikey)
{
var proposalBytes = Util.Marshal(proposal);
var signature = Util.ConvertToByteString(ECDSAHelper.SignData(proposalBytes, prikey));
return(new SignedProposal()
{
ProposalBytes = proposalBytes,
Signature = signature
});
}
