RAS加解密帮助类，不记得哪里抄的了
IRSAManager
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public interface IRSAManager
{
/// <summary>
/// 生成私钥
/// </summary>
/// <returns>私钥base64字符串</returns>
string CreatePrivateKey();
/// <summary>
/// 生成私钥
/// </summary>
/// <param name="dwKeySize">私钥位数</param>
/// <returns>私钥base64字符串</returns>
string CreatePrivateKey(int dwKeySize);
/// <summary>
/// 获取公钥
/// </summary>
/// <param name="priKey">私钥base64字符串</param>
/// <returns>公钥base64字符串</returns>
string GetPublicKey(string priKey);
/// <summary>
/// 签名数据
/// </summary>
/// <param name="priKey">私钥字符串</param>
/// <param name="data">待签名内容</param>
/// <returns>签名后字符串</returns>
string SignData(string priKey, string data);
/// <summary>
/// 验证签名
/// </summary>
/// <param name="pubKey">公钥字符串</param>
/// <param name="signedData">签名后字符串</param>
/// <param name="data">待验证签名内容</param>
/// <returns>是否验证通过</returns>
bool VerifySignedData(string pubKey, string signedData, string data);
}
class RSAManager : IRSAManager
{
/// <summary>
/// 生成私钥
/// </summary>
/// <returns>私钥base64字符串</returns>
public string CreatePrivateKey()
{
var Rsa = new RSACryptoServiceProvider();
var priKey = Convert.ToBase64String(Rsa.ExportCspBlob(true));
return priKey;
}
/// <summary>
/// 生成私钥
/// </summary>
/// <param name="dwKeySize">私钥位数</param>
/// <returns>私钥base64字符串</returns>
public string CreatePrivateKey(int dwKeySize)
{
var Rsa = new RSACryptoServiceProvider(dwKeySize);
var priKey = Convert.ToBase64String(Rsa.ExportCspBlob(true));
return priKey;
}
/// <summary>
/// 获取公钥
/// </summary>
/// <param name="priKey">私钥base64字符串</param>
/// <returns>公钥base64字符串</returns>
public string GetPublicKey(string priKey)
{
var rsa = new RSACryptoServiceProvider();
rsa.ImportCspBlob(Convert.FromBase64String(priKey));
var pubKey = Convert.ToBase64String(rsa.ExportCspBlob(false));
return pubKey;
}
/// <summary>
/// 签名数据
/// </summary>
/// <param name="priKey">私钥字符串</param>
/// <param name="data">待签名内容</param>
/// <returns>签名后字符串</returns>
public string SignData(string priKey, string data)
{
var rsa = new RSACryptoServiceProvider();
rsa.ImportCspBlob(Convert.FromBase64String(priKey));
var signData = rsa.SignData(Encoding.UTF8.GetBytes(data), new SHA1CryptoServiceProvider());
return Convert.ToBase64String(signData);
}
/// <summary>
/// 验证签名
/// </summary>
/// <param name="pubKey">公钥字符串</param>
/// <param name="signedData">签名后字符串</param>
/// <param name="data">待验证签名内容</param>
/// <returns>是否验证通过</returns>
public bool VerifySignedData(string pubKey, string signedData, string data)
{
var rsa = new RSACryptoServiceProvider();
rsa.ImportCspBlob(Convert.FromBase64String(pubKey));
var verify = rsa.VerifyData(Encoding.UTF8.GetBytes(data), new SHA1CryptoServiceProvider(), Convert.FromBase64String(signedData));
return verify;
}
}
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