/// <summary>5.4.3 PKCS#7解密
///
/// </summary>
/// <param name="sSignData"></param>
/// <returns></returns>
public static byte[] decryptPKCS7(String sSignData)
{
try
{
Utilities oUtilities = new Utilities();
byte[] bSignData = (byte[])oUtilities.Base64Decode(sSignData);
SecuInter.EnvelopedData oEnv = new SecuInter.EnvelopedData();
oEnv.Decrypt(bSignData);
byte[] rt = (byte[])oEnv.Content;
//IEnumerator oenum=oEnv.Recipients.GetEnumerator();
//((SecuInter.X509Certificate)oenum.Current).Display();
oEnv = null;
return(rt);
}
catch (Exception)
{
return(null);
}
}
/// <summary>5.4.2 PKCS#7加密
///
/// </summary>
/// <param name="bSource"></param>
/// <returns></returns>
public static String encryptPKCS7(byte[] bSource, SecuInter.X509Certificate oCert)
{
if (oCert == null)
{
throw new Exception("未选择证书,请检查是否插入密钥!");
}
if (bSource.Length == 0)
{
throw new Exception("原文为空!");
}
SecuInter.EnvelopedData oEnv = new SecuInter.EnvelopedData();
oEnv.Algorithm = SECUINTER_ENCRYPT_ALGORITHM.SECUINTER_ALGORITHM_DES;
oEnv.Recipients.Add(oCert);
oEnv.Content = bSource;
object arrRT = oEnv.Encrypt(SECUINTER_CMS_ENCODE_TYPE.SECUINTER_CMS_ENCODE_BASE64);
oEnv = null;
return(arrRT.ToString());
}