Load a Private Key from XML Text

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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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#include <C_CkPrivateKey.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPrivateKey privKey;
    const char *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 = CkPrivateKey_Create();

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

    success = CkPrivateKey_LoadXml(privKey,xmlText);
    if (success == FALSE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
        CkPrivateKey_Dispose(privKey);
        return;
    }

    printf("Loaded a %s private key.\n",CkPrivateKey_keyType(privKey));


    CkPrivateKey_Dispose(privKey);

    }