Decrypting using CA Certificate

From: prem (premkumarjayaram_at_hotmail.com)
Date: 06/27/03

  • Next message: Richard Thibault: "connect as" 
    Date: Fri, 27 Jun 2003 09:09:39 -0700

    Hello Everybody,

    I am trying out a program from MSDN titled "Example C
    Program: Sending and Receiving a Signed and Encrypted
    Message" with few minor modification to encrypt a string
    using the API CryptSignAndEncryptMessage ( I used a
    certificate from MY store to sing the certificate and the
    CA self signed certificate to encrypt the string ). I am
    writing the encrypted string into a file and this files is
    sent to the PC where the CA is installed ( installed a
    Enterprise CA ). On the CA, I am reading the encrypted
    blob from the file and decrypting it using the API
    CryptDecryptAndVerifyMessageSignature() ( which uses the
    private key of CA self sigend certificate ).

    The problem I encounter is, while decrypting the string
    CryptDecryptAndVerifyMessageSignature() fails and the
    error code I get says that "Key does not exist". When I
    view the CA self signed certificate, it does not say that
    it has the private ket ( like it shows for the personal
    certificates ).

    I appreciate any kind of help in solving this problem.

    Thanks.

    -Prem

  • Next message: Richard Thibault: "connect as"

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