Chilkat Examples

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MFC Examples

ASN.1
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
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Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CSR
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JSON Web Token (JWT)

Java KeyStore (JKS)
Jira
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Microsoft Graph
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POP3
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Tar Archive
Twitter
Upload
VoiceBase
Walmart
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XAdES
XML
XML Digital Signatures
XMP
Xero
Zip
curl
eBay

 

 

 

(MFC) DSA Generate Key

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA PRIVATE KEY-----

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

// Needs #include <CkDsa.h>

    CkString strOut;

    bool success;

    CkDsa dsa;

    success = dsa.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append(dsa.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Call GenKey to generate a new DSA key.
    //  The number of bits should be at least 1024 and a multiple
    //  of 64.   Typical values are either 1024 or 2048.
    //  DSA key generation is compute intensive and may take
    //  a short while to complete.
    success = dsa.GenKey(2048);
    if (success != true) {
        strOut.append(dsa.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Extract the private and public parts to PEM or DER format
    //  and save to files...
    const char *pemStr = 0;
    const char *xmlStr = 0;

    //  First for the public key...
    //  The public key never needs to be encrypted.

    //  Save the public key in PEM format:
    pemStr = dsa.toPublicPem();
    //  This example will not check the return value of SaveText...
    success = dsa.SaveText(pemStr,"dsa_pub.pem");

    //  Save the public key in DER format:
    success = dsa.ToPublicDerFile("dsa_pub.der");

    bool bPublicOnly = true;
    //  Save to XML
    xmlStr = dsa.toXml(bPublicOnly);
    success = dsa.SaveText(xmlStr,"dsa_pub.xml");

    //  ------------------------------------
    //  Now for the private key....
    //  ------------------------------------

    //  Unencrypted PEM:
    pemStr = dsa.toPem();
    success = dsa.SaveText(pemStr,"dsa_priv.pem");

    //  Encrypted PEM:
    pemStr = dsa.toEncryptedPem("myPassword");
    success = dsa.SaveText(pemStr,"dsa_privEncrypted.pem");

    //  DER:
    success = dsa.ToDerFile("dsa_priv.der");

    //  XML:
    bPublicOnly = false;
    xmlStr = dsa.toXml(bPublicOnly);
    success = dsa.SaveText(xmlStr,"dsa_priv.xml");

    strOut.append("Finished!");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

 

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