// Token: 0x06000010 RID: 16 RVA: 0x000025C0 File Offset: 0x000007C0
internal static byte[] GetDERFromPEM(string sPEM)
{
uint num = 0U;
uint num2;
uint num3;
if (!RSACryptoServiceProviderExtension.CryptStringToBinary(sPEM, (uint)sPEM.Length, RSACryptoServiceProviderExtension.CRYPT_STRING_FLAGS.CRYPT_STRING_BASE64HEADER, null, ref num, out num2, out num3))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
byte[] array = new byte[num];
if (!RSACryptoServiceProviderExtension.CryptStringToBinary(sPEM, (uint)sPEM.Length, RSACryptoServiceProviderExtension.CRYPT_STRING_FLAGS.CRYPT_STRING_BASE64HEADER, array, ref num, out num2, out num3))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return(array);
}
// Token: 0x06000008 RID: 8 RVA: 0x00002330 File Offset: 0x00000530
private bool RSACheckContent(byte[] signContent, byte[] sign, string publicKeyPem, string signType)
{
bool result;
try
{
RSACryptoServiceProvider rsacryptoServiceProvider = new RSACryptoServiceProvider();
rsacryptoServiceProvider.PersistKeyInCsp = false;
RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsacryptoServiceProvider, publicKeyPem);
bool flag = rsacryptoServiceProvider.VerifyData(signContent, signType, sign);
result = flag;
}
catch
{
result = false;
}
return(result);
}
// Token: 0x0600000D RID: 13 RVA: 0x0000242C File Offset: 0x0000062C
internal static void LoadPublicKeyPEM(RSACryptoServiceProvider provider, string sPEM)
{
byte[] derfromPEM = RSACryptoServiceProviderExtension.GetDERFromPEM(sPEM);
RSACryptoServiceProviderExtension.LoadPublicKeyDER(provider, derfromPEM);
}
// Token: 0x0600000C RID: 12 RVA: 0x00002408 File Offset: 0x00000608
private static void LoadPublicKeyDER(RSACryptoServiceProvider provider, byte[] DERData)
{
byte[] rsafromDER = RSACryptoServiceProviderExtension.GetRSAFromDER(DERData);
byte[] publicKeyBlobFromRSA = RSACryptoServiceProviderExtension.GetPublicKeyBlobFromRSA(rsafromDER);
provider.ImportCspBlob(publicKeyBlobFromRSA);
}