/// <summary>
/// 加密数据，出错抛异常
/// </summary>
public byte[] Encrypt(byte[] data)
{
int blockLen = RSAObject.KeySize / 8 - 11;
if (data.Length <= blockLen)
{
return(RSAObject.Encrypt(data, false));
}
using var dataStream = new MemoryStream(data);
using var enStream = new MemoryStream();
var buffer = new byte[blockLen];
int len = dataStream.Read(buffer, 0, blockLen);
while (len > 0)
{
var block = new byte[len];
Array.Copy(buffer, 0, block, 0, len);
var enBlock = RSAObject.Encrypt(block, false);
enStream.Write(enBlock, 0, enBlock.Length);
len = dataStream.Read(buffer, 0, blockLen);
}
return(enStream.ToArray());
}
/// <summary>
/// 解密数据，解密异常返回null
/// </summary>
public byte[] DecryptOrNull(byte[] data)
{
try
{
int blockLen = RSAObject.KeySize / 8;
if (data.Length <= blockLen)
{
return(RSAObject.Decrypt(data, false));
}
using var dataStream = new MemoryStream(data);
using var deStream = new MemoryStream();
byte[] buffer = new byte[blockLen];
int len = dataStream.Read(buffer, 0, blockLen);
while (len > 0)
{
var block = new byte[len];
Array.Copy(buffer, 0, block, 0, len);
var deBlock = RSAObject.Decrypt(block, false);
deStream.Write(deBlock, 0, deBlock.Length);
len = dataStream.Read(buffer, 0, blockLen);
}
return(deStream.ToArray());
}
catch
{
return(null);
}
}
/// <summary>
/// 验证data的签名是否是sgin，并指定hash算法（如：SHA256）
/// </summary>
public bool Verify(string hash, byte[] sgin, byte[] data)
{
try
{
return(RSAObject.VerifyData(data, hash, sgin));
}
catch
{
return(false);
}
}
public IHttpActionResult getRSAKey(RSAObject obj)
{
var CCAVENUE_ACCESS_CODE = ConfigurationManager.AppSettings["CCAVENUE_ACCESS_CODE"];
if (CCAVENUE_ACCESS_CODE == obj.access_code)
{
string vParams = "access_code=" + obj.access_code + "&" + "order_id=" + obj.order_id;
string queryUrl = "https://secure.ccavenue.com/transaction/getRSAKey";
var encStr = postPaymentRequestToGateway(queryUrl, vParams);
if (encStr != null && encStr != "")
{
return(Ok(new{ RSAKey = encStr, Status = UTILITY.SUCCESSTATUS }));
}
else
{
return(Ok(new { RSAKey = "", Status = UTILITY.FAILURESTATUS }));
}
}
else
{
return(Ok());
}
}
/// <summary>
/// 对data进行签名，并指定hash算法（如：SHA256）
/// </summary>
public byte[] Sign(string hash, byte[] data)
{
return(RSAObject.SignData(data, hash));
}
/// <summary>
/// 导出XML格式密钥对，如果convertToPublic含私钥的RSA将只返回公钥，仅含公钥的RSA不受影响
/// </summary>
public string ToXML(bool convertToPublic = false)
{
return(RSAObject.ToXmlString(!RSAObject.PublicOnly && !convertToPublic));
}