RE: Decryption using private key from cert store failing with err

From: scott (sjumsdn_at_newsgroup.nospam)
Date: 02/14/05 

Date: Mon, 14 Feb 2005 09:41:15 -0800

I had already looked up the error in MSDN and none of the reasons seemed
applicable to my situation. I have previously tried using encrypt, and it
also fails with the bad data error. The content of the buffer being
encrypted/decrypted should have no bearing on whether the call works (except
if padding is involved, which it is not in my case).

I need to encrypt/decrypt with a certs public/private key. The encrypting a
file sample in msdn just uses a password.

"Rhett Gong [MSFT]" wrote:

> You get error 80090005 NTE_BAD_DATA. in MSDN:
> "The data to be decrypted is invalid. For example, when a block cipher is
> used and the Final flag is FALSE, the value specified by pdwDataLen must be
> a multiple of the block size. This error can also be returned when the
> padding is found to be invalid. "
>
> I saw you were using a buffer set with 'A', I am not sure what you are
> trying to do there. If you want to make a simple test, you may encrypt this
> data first and decrypt it later with the same key. For how to encrypt data,
> please reference "Example C Program: Encrypting a File" in MSDN.
>
>
> Thanks,
> Rhett Gong [MSFT]
> Microsoft Online Partner Support
> Get Secure! - www.microsoft.com/security
>
> This posting is provided "AS IS" with no warranties and confers no rights.
>
>

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