Re: CryptImportKey() & CryptExportPublicKeyInfo()

From: Petar Popara (my.fake_at_mail.net)
Date: 04/18/05

  • Next message: Michel Gallant: "Re: Code Signing Clarification" 
    Date: Mon, 18 Apr 2005 16:10:57 +0200

    To advanced for me. :( I'll need to ask additional questions here (see
    below).

    > You need to first ANS.1 encode the PublicKey, from the PUBLICKEYBLOB
    > data, using CryptEncodeObject with lpszStructType = RSA_CSP_PUBLICKEYBLOB
    I couldn't figure out what structure CryptEncodeObject() returns for
    lpszStructType=RSA_CSP_PUBLICKEYBLOB? It returns CRYPT_BIT_BLOB with
    different encoding (e.g. PKCS1) then it was on input?

    > Then you construct a CERT_PUBLIC_KEY_INFO with that returned
    > encoded public key:
    >
    > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/seccrypto/security/cert_public_key_info.asp
    How?

    CERT_PUBLIC_KEY_INFO pki;
    pki.Algorithm = szOID_RSA; //???
    pki.PublicKey = stucure returned from CryptEncodeObject().

    Something like this?

    > See also:
    > http://www.jensign.com/JavaScience/dotnet/JKeyNet/index.html
    There are 3 links and first is broken.

    Thank you very very much. :)

  • Next message: Michel Gallant: "Re: Code Signing Clarification"