在.NET应用程序中使用Win32 CryptoAPI生成的密钥blob,可以通过以下步骤实现:
System.Security.Cryptography
和System.Runtime.InteropServices
命名空间。PUBLICKEYBLOB
结构。[StructLayout(LayoutKind.Sequential)]
public struct PUBLICKEYBLOB
{
public byte bType;
public byte bVersion;
public short reserved;
public ALG_ID aiKeyAlg;
public byte[] PublicKey;
}
PUBLICKEYBLOB
结构体转换为RSAParameters
对象。public static RSAParameters ConvertPublicKeyToRSAParameters(byte[] publicKeyBlob)
{
GCHandle handle = GCHandle.Alloc(publicKeyBlob, GCHandleType.Pinned);
PUBLICKEYBLOB publicKey = (PUBLICKEYBLOB)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(PUBLICKEYBLOB));
handle.Free();
RSAParameters parameters = new RSAParameters();
parameters.Modulus = publicKey.PublicKey[0..(publicKey.PublicKey.Length / 2)];
parameters.Exponent = publicKey.PublicKey[(publicKey.PublicKey.Length / 2)..];
return parameters;
}
ConvertPublicKeyToRSAParameters
方法将密钥blob转换为RSAParameters
对象,并创建一个RSA
对象。byte[] publicKeyBlob = GetPublicKeyBlobFromCryptoAPI();
RSAParameters parameters = ConvertPublicKeyToRSAParameters(publicKeyBlob);
using RSA rsa = RSA.Create();
rsa.ImportParameters(parameters);
RSA
对象进行加密或验证操作。byte[] dataToEncrypt = Encoding.UTF8.GetBytes("Hello, world!");
byte[] encryptedData = rsa.Encrypt(dataToEncrypt, RSAEncryptionPadding.OaepSHA256);
byte[] signatureToVerify = GetSignatureToVerify();
byte[] dataToVerify = Encoding.UTF8.GetBytes("Hello, world!");
bool isVerified = rsa.VerifyData(dataToVerify, signatureToVerify, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
以上就是在.NET应用程序中使用Win32 CryptoAPI生成的密钥blob的方法。
领取专属 10元无门槛券
手把手带您无忧上云