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# dl ## Name dl -- Dynamic crypto-engine library loading support. ## Functions
int | xmlSecCryptoDLFunctionsRegisterKeyDataAndTransforms ()
int | xmlSecCryptoDLInit ()
int | xmlSecCryptoDLShutdown ()
int | xmlSecCryptoDLLoadLibrary ()
xmlSecCryptoDLFunctionsPtr | xmlSecCryptoDLGetLibraryFunctions ()
int | xmlSecCryptoDLUnloadLibrary ()
int | xmlSecCryptoDLSetFunctions ()
xmlSecCryptoDLFunctionsPtr | xmlSecCryptoDLGetFunctions ()
## Description Dynamic crypto-engine library loading support. ## Functions ### xmlSecCryptoDLFunctionsRegisterKeyDataAndTransforms ()
    int
    xmlSecCryptoDLFunctionsRegisterKeyDataAndTransforms
                                   (xmlSecCryptoDLFunctionsPtr functions);
Registers the key data and transforms klasses from `functions` table in xmlsec. #### Parameters
functions | the functions table. |
#### Returns 0 on success or a negative value if an error occurs. ### xmlSecCryptoDLInit ()
    int
    xmlSecCryptoDLInit (void);
Initializes dynamic loading engine. This is an internal function and should not be called by application directly. #### Returns 0 on success or a negative value if an error occurs. ### xmlSecCryptoDLShutdown ()
    int
    xmlSecCryptoDLShutdown (void);
Shutdowns dynamic loading engine. This is an internal function and should not be called by application directly. #### Returns 0 on success or a negative value if an error occurs. ### xmlSecCryptoDLLoadLibrary ()
    int
    xmlSecCryptoDLLoadLibrary (const xmlChar *crypto);
Loads the xmlsec-$crypto library. This function is NOT thread safe, application MUST NOT call xmlSecCryptoDLLoadLibrary, xmlSecCryptoDLGetLibraryFunctions, and xmlSecCryptoDLUnloadLibrary functions from multiple threads. #### Parameters
crypto | the desired crypto library name ("openssl", "nss", ...). If NULL then the default crypto engine will be used. |
#### Returns 0 on success or a negative value if an error occurs. ### xmlSecCryptoDLGetLibraryFunctions ()
    xmlSecCryptoDLFunctionsPtr
    xmlSecCryptoDLGetLibraryFunctions (const xmlChar *crypto);
Loads the xmlsec-$crypto library and gets global crypto functions/transforms/keys data/keys store table. This function is NOT thread safe, application MUST NOT call xmlSecCryptoDLLoadLibrary, xmlSecCryptoDLGetLibraryFunctions, and xmlSecCryptoDLUnloadLibrary functions from multiple threads. #### Parameters
crypto | the desired crypto library name ("openssl", "nss", ...). |
#### Returns the table or NULL if an error occurs. ### xmlSecCryptoDLUnloadLibrary ()
    int
    xmlSecCryptoDLUnloadLibrary (const xmlChar *crypto);
Unloads the xmlsec-$crypto library. All pointers to this library functions tables became invalid. This function is NOT thread safe, application MUST NOT call xmlSecCryptoDLLoadLibrary, xmlSecCryptoDLGetLibraryFunctions, and xmlSecCryptoDLUnloadLibrary functions from multiple threads. #### Parameters
crypto | the desired crypto library name ("openssl", "nss", ...). |
#### Returns 0 on success or a negative value if an error occurs. ### xmlSecCryptoDLSetFunctions ()
    int
    xmlSecCryptoDLSetFunctions (xmlSecCryptoDLFunctionsPtr functions);
Sets global crypto functions/transforms/keys data/keys store table. #### Parameters
functions | the new table |
#### Returns 0 on success or a negative value if an error occurs. ### xmlSecCryptoDLGetFunctions ()
    xmlSecCryptoDLFunctionsPtr
    xmlSecCryptoDLGetFunctions (void);
Gets global crypto functions/transforms/keys data/keys store table. #### Returns the table. ## Types and Values