Re: CryptAPI(encryption/decryption)

Hi Dsilva,
Thanks again. Thanks for your valid information.
I got one tool but its in JAVA. I don't have any idea about it.
I'm trying to understand the basics of these public key and Certificate.
I tried using the openssl library, tried to import the .pvk file after
converitn with pvktool but noting is working for me. I'm in total mess. I
understood your reply to make the blob in the format given. I'm in the R&D of
how to make it.

One another doubt. If I use a PFX file instead of PEM can I import the
private key?
I can import the PFX file using PFXImportCertStore(). Now I don't know how
to proceed. Can you give some suggestion

Thanks
S.Kumar

"Dylan DSilva (MS)" wrote:

Yes, the PEM format is Base64 encoded and may additionally be encrypted with
a symmetric cipher (AES, 3DES etc.). In addition to decoding it to
unencrypted binary, you would need to create the PRIVATEKEYBLOB structure
with the fields described in
http://msdn2.microsoft.com:80/en-us/library/ms884374.aspx. Only a
PRIVATEKEYBLOB can be imported into a Microsoft CSP. As I mentioned in my
earlier post, you should be able to find tools that support this conversion.

--
Dylan DSilva
Software Development Engineer
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use. © Microsoft Corporation. All rights
reserved.

"S.Kumar" <SKumar@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:B8B841E0-5299-4D5F-B619-EE6F7FF02B2D@xxxxxxxxxxxxxxxx

Thanks DSilva,
I like to get little more details.
Is the PEM format is in base64 coded? If I convert the PEM to binary, can
I
load it into Microsoft CSP's?

Thanks in advance

S.Kumar.

"Dylan DSilva (MS)" wrote:

Unfortunately the Microsoft CSPs do not support importing keys in pem
format. You would need to convert your key to the blob format described
in
http://msdn2.microsoft.com/en-us/library/ms884374.aspx (I believe there
are
tools out on the internet that let you do this) or use a custom CSP that
supports keys in pem format.

--
Dylan DSilva
Software Development Engineer
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no
rights.
You assume all risk for your use. © Microsoft Corporation. All rights
reserved.

"S.Kumar" <SKumar@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:D1B60822-0411-4666-8263-B58B2ECAF340@xxxxxxxxxxxxxxxx
Hi All,

I'm facing a problem in encryption decryption.
I have the privatekey in pem format.
How can I import this into CSP and decrypt the data which is encrypted
using
public key.

I tried using CryptImportKey () but no success.

Thanks







.

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