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# bn

## Name

bn --

## Synopsis

    BIGNUM*     xmlSecOpenSSLNodeGetBNValue     (const xmlNodePtr cur,
                                                 BIGNUM **a);
    int         xmlSecOpenSSLNodeSetBNValue     (xmlNodePtr cur,
                                                 const BIGNUM *a,
                                                 int addLineBreaks);

## Description

## Details

### xmlSecOpenSSLNodeGetBNValue ()

    BIGNUM*     xmlSecOpenSSLNodeGetBNValue     (const xmlNodePtr cur,
                                                 BIGNUM **a);

Converts the node content from CryptoBinary format (http://www.w3.org/TR/xmldsig-core/sec-CryptoBinary) to a BIGNUM. If no BIGNUM buffer provided then a new BIGNUM is created (caller is responsible for freeing it).

cur : | the poitner to an XML node.
a : | the BIGNUM buffer.
Returns : | a pointer to BIGNUM produced from CryptoBinary string or NULL if an error occurs.

### xmlSecOpenSSLNodeSetBNValue ()

    int         xmlSecOpenSSLNodeSetBNValue     (xmlNodePtr cur,
                                                 const BIGNUM *a,
                                                 int addLineBreaks);

Converts BIGNUM to CryptoBinary string (http://www.w3.org/TR/xmldsig-core/sec-CryptoBinary) and sets it as the content of the given node. If the addLineBreaks is set then line breaks are added before and after the CryptoBinary string.

cur : | the pointer to an XML node.
a : | the BIGNUM.
addLineBreaks : | if the flag is equal to 1 then linebreaks will be added before and after new buffer content.
Returns : | 0 on success or -1 otherwise.