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# certkeys ## Name certkeys -- MS Crypto certificates helper functions. ## Synopsis
    PCCERT_CONTEXT      xmlSecMSCryptoKeyDataGetCert        (xmlSecKeyDataPtr data);
    HCRYPTKEY           xmlSecMSCryptoKeyDataGetKey         (xmlSecKeyDataPtr data,
                                                             xmlSecKeyDataType type);
    HCRYPTKEY           xmlSecMSCryptoKeyDataGetDecryptKey  (xmlSecKeyDataPtr data);
    PCCERT_CONTEXT      xmlSecMSCryptoCertDup               (PCCERT_CONTEXT pCert);
    xmlSecKeyDataPtr    xmlSecMSCryptoCertAdopt             (PCCERT_CONTEXT pCert,
                                                             xmlSecKeyDataType type);
    HCRYPTPROV          xmlSecMSCryptoKeyDataGetMSCryptoProvider
                                                            (xmlSecKeyDataPtr data);
    DWORD               xmlSecMSCryptoKeyDataGetMSCryptoKeySpec
                                                            (xmlSecKeyDataPtr data);
## Description MS Crypto certificates helper functions. ## Details ### xmlSecMSCryptoKeyDataGetCert ()
    PCCERT_CONTEXT      xmlSecMSCryptoKeyDataGetCert        (xmlSecKeyDataPtr data);
Native MSCrypto certificate retrieval from xmlsec keydata. The returned PCCERT_CONTEXT must not be released by the caller.
`data` : | the key data to retrieve certificate from.
Returns : | PCCERT_CONTEXT on success or NULL otherwise.
### xmlSecMSCryptoKeyDataGetKey ()
    HCRYPTKEY           xmlSecMSCryptoKeyDataGetKey         (xmlSecKeyDataPtr data,
                                                             xmlSecKeyDataType type);
Native MSCrypto key retrieval from xmlsec keydata. The returned HKEY must not be destroyed by the caller.
`data` : | the key data to retrieve certificate from.
`type` : | type of key requested (public/private)
Returns : | HKEY on success or NULL otherwise.
### xmlSecMSCryptoKeyDataGetDecryptKey ()
    HCRYPTKEY           xmlSecMSCryptoKeyDataGetDecryptKey  (xmlSecKeyDataPtr data);
Native MSCrypto decrypt key retrieval from xmlsec keydata. The returned HKEY must not be destroyed by the caller.
`data` : | the key data pointer
Returns : | HKEY on success or NULL otherwise.
### xmlSecMSCryptoCertDup ()
    PCCERT_CONTEXT      xmlSecMSCryptoCertDup               (PCCERT_CONTEXT pCert);
Duplicates the `pCert`.
`pCert` : | the pointer to cert.
Returns : | pointer to newly created PCCERT_CONTEXT object or NULL if an error occurs.
### xmlSecMSCryptoCertAdopt ()
    xmlSecKeyDataPtr    xmlSecMSCryptoCertAdopt             (PCCERT_CONTEXT pCert,
                                                             xmlSecKeyDataType type);
Creates key data value from the cert.
`pCert` : | the pointer to cert.
`type` : | the expected key type.
Returns : | pointer to newly created xmlsec key or NULL if an error occurs.
### xmlSecMSCryptoKeyDataGetMSCryptoProvider ()
    HCRYPTPROV          xmlSecMSCryptoKeyDataGetMSCryptoProvider
                                                            (xmlSecKeyDataPtr data);
Gets crypto provider handle
`data` : | the key data
Returns : | the crypto provider handler or 0 if there is an error.
### xmlSecMSCryptoKeyDataGetMSCryptoKeySpec ()
    DWORD               xmlSecMSCryptoKeyDataGetMSCryptoKeySpec
                                                            (xmlSecKeyDataPtr data);
Gets key spec info.
`data` : | the key data
Returns : | the key spec info from key data