Unicode C

Load a Private Key from XML Text

Demonstrates the Chilkat PrivateKey.LoadXml method, which loads a private key from XML text. The only argument is the XML string. Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue, and Ed25519KeyValue.

Background: XML key representations such as RSAKeyValue come from the .NET/XML-DSIG world, where keys are exchanged as XML elements. This loads that form — the inverse of GetXml — which is handy for interoperating with .NET code or systems built around XML signatures. It is a plaintext format, so protect the XML like any unencrypted key material.

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Unicode C

#include <C_CkPrivateKeyW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKeyW privKey;
    const wchar_t *xmlText;

    success = FALSE;

    //  Demonstrates the PrivateKey.LoadXml method, which loads a private key from XML text.  The only
    //  argument is the XML string.  Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue,
    //  and Ed25519KeyValue.

    privKey = CkPrivateKeyW_Create();

    //  The XML text of a private key (for example as produced by GetXml).
    xmlText = L"<RSAKeyValue><Modulus>...</Modulus><Exponent>AQAB</Exponent>...</RSAKeyValue>";

    success = CkPrivateKeyW_LoadXml(privKey,xmlText);
    if (success == FALSE) {
        wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey));
        CkPrivateKeyW_Dispose(privKey);
        return;
    }

    wprintf(L"Loaded a %s private key.\n",CkPrivateKeyW_keyType(privKey));


    CkPrivateKeyW_Dispose(privKey);

    }