Throw Cryptographic Exception using the CM

Throw Cryptographic Exception using the CM


Problem:


System.Security.Cryptography.CryptographicException: Access is denied. at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr) at System.Security.Cryptography.Utils._AcquireCSP(CspParameters param, SafeProvHandle& hProv) at System.Security.Cryptography.Utils.AcquireProvHandle(CspParameters parameters) at System.Security.Cryptography.CryptoAPITransform..ctor(Int32 algid, Int32 cArgs, Int32[] rgArgIds, Object[] rgArgValues, Byte[] rgbKey, PaddingMode padding, CipherMode cipherChainingMode, Int32 blockSize, Int32 feedbackSize, Boolean useSalt, CryptoAPITransformMode encDecMode) at System.Security.Cryptography.DESCryptoServiceProvider._NewEncryptor(Byte[] rgbKey, CipherMode mode, Byte[] rgbIV, Int32 feedbackSize, CryptoAPITransformMode encryptMode) at System.Security.Cryptography.DESCryptoServiceProvider.CreateDecryptor(Byte[] rgbKey, Byte[] rgbIV) at A.c71bf50ce18f4d68a60a8733c6563e1f7.cb7b6870b5e9f986fd298a22bd1e0c119(Stream c4fc144392daa42b762a1e3a8435415be) at A.c7e6b22192f0a0e8c8fd8780e1983f4b5..cctor()

 

Solution:

​

The application might be trying to write to the following folder path: C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys

If your application is using impersonation or using the IUSR_MACHINENAME user, then configure the MachineKeys folder sercurities and give the user Read & Execute, List Folder Contents, Read, Write. If that doesn't work, try giving the Everyone user the same permissions.





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