我是密码编程的新手。我只想使用 Pkcs11Interop 库创建具有 CAdES 格式的 C# 数字签名,而无需签名数据或文档或消息,我希望签名字符串仅用于从我的应用程序生成的任何 json 或 xml 文件。我使用了 Pkcs11Interop 库,因为我有一个带有非托管 PKCS#11 dll 库的智能令牌“Cryptoki”,我必须使用它来制作签名。这是我基于 Pkcs11Interop 开源示例的示例代码。
using System;
using System.Collections.Generic;
using Net.Pkcs11Interop.Common;
using Net.Pkcs11Interop.HighLevelAPI;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
Pkcs11InteropFactories factories = new Pkcs11InteropFactories();
using (IPkcs11Library pkcs11Library = factories.Pkcs11LibraryFactory.LoadPkcs11Library(factories, @"C:\eps2003csp11.dll", AppType.MultiThreaded))
{
ILibraryInfo libraryInfo = pkcs11Library.GetInfo();
foreach (ISlot slot in pkcs11Library.GetSlotList(SlotsType.WithOrWithoutTokenPresent))
{
ISlotInfo slotInfo = slot.GetSlotInfo();
if (slotInfo.SlotFlags.TokenPresent)
{
using (ISession session = slot.OpenSession(SessionType.ReadWrite))
{
session.Login(CKU.CKU_USER, @"000000");
IObjectHandle publicKey = null;
IObjectHandle privateKey = null;
GenerateKeyPair(session, out publicKey, out privateKey);
IMechanism mechanism = session.Factories.MechanismFactory.Create(CKM.CKM_CMS_SIG);
byte[] sourceData = ConvertUtils.Utf8StringToBytes(null);
byte[] signature = session.Sign(mechanism, privateKey, sourceData);
string vStringSignature = ConvertUtils.BytesToBase64String(signature);
Console.WriteLine("Signature: " + vStringSignature);
session.DestroyObject(privateKey);
session.DestroyObject(publicKey);
session.Logout();
}
}
}
}
}
static void GenerateKeyPair(ISession session, out IObjectHandle publicKeyHandle, out IObjectHandle privateKeyHandle)
{
// The CKA_ID attribute is intended as a means of distinguishing multiple key pairs held by the same subject
byte[] ckaId = session.GenerateRandom(20);
// Prepare attribute template of new public key
List<IObjectAttribute> publicKeyAttributes = new List<IObjectAttribute>();
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_TOKEN, true));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_PRIVATE, false));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_LABEL, "Digital Business ERP"));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_ID, ckaId));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_ENCRYPT, true));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_VERIFY, true));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_VERIFY_RECOVER, true));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_WRAP, true));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_MODULUS_BITS, 1024));
publicKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_PUBLIC_EXPONENT, new byte[] { 0x01, 0x00, 0x01 }));
// Prepare attribute template of new private key
List<IObjectAttribute> privateKeyAttributes = new List<IObjectAttribute>();
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_TOKEN, true));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_PRIVATE, true));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_LABEL, "Digital Business ERP"));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_ID, ckaId));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_SENSITIVE, true));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_DECRYPT, true));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_SIGN, true));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_SIGN_RECOVER, true));
privateKeyAttributes.Add(session.Factories.ObjectAttributeFactory.Create(CKA.CKA_UNWRAP, true));
// Specify key generation mechanism
IMechanism mechanism = session.Factories.MechanismFactory.Create(CKM.CKM_RSA_PKCS_KEY_PAIR_GEN);
// Generate key pair
session.GenerateKeyPair(mechanism, publicKeyAttributes, privateKeyAttributes, out publicKeyHandle, out privateKeyHandle);
}
}
}
如果我在以下 sourceData 变量中加上“null”或空双引号
byte[] sourceData = ConvertUtils.Utf8StringToBytes(null);
或者
byte[] sourceData = ConvertUtils.Utf8StringToBytes("");
我在创建这样的签名时出错
byte[] signature = session.Sign(mechanism, privateKey, sourceData);
或者
byte[] signature = session.Sign(mechanism, privateKey, null);
只有当我输入像“Hello World”这样的样本数据时,签名字符串才会成功生成,但它包含的数据字符串是这个样本中的“Hello World”。
我想生成不包含任何数据的签名字符串,而且在我的代码中我不知道如何将签名格式设置为 CAdES。