Re: CryptDecrypt wrong key

From: Jack (jackabcd_0076_at_yahoo.com)
Date: 03/04/05

  • Next message: Jack: "Re: Behavior when multiple access to one key container" 
    Date: Fri, 4 Mar 2005 10:12:29 +0100

    but which error code to return?
    there is no errror code defined for this case!

    "lelteto" <lelteto@discussions.microsoft.com> schrieb im Newsbeitrag
    news:1D2E55E4-88B0-4162-8930-E8BCA932CC07@microsoft.com...
    > Yes, it is recognized as wrong decryption. The reason is that the
    encrypted
    > data is FORMATTED (see PKCS #1) and this format is checked after
    decryption
    > (ie. after applying the RSA exponentiation with the private key). It is
    > highly unlikely that with the wrogn decryption key the format would be
    > correct. So yes, CryptDecrypt would return error (FALSE).
    >
    > Laszlo Elteto
    > SafeNet, Inc.
    >
    > "Peodor" wrote:
    >
    > > Hi,
    > >
    > > Assume something is RSA public key encrypted with CryptEncrypt.
    > >
    > > What happens if WRONG RSA private key is supplied when it is decrypted
    with
    > > CryptDecrypt?
    > > Is it detected that wrong key is supplied?
    > > Is true or false returned? Last error?

  • Next message: Jack: "Re: Behavior when multiple access to one key container"

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