XML Security Library

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bn

Name

bn -- Big numbers support functions.

Synopsis

enum                xmlSecBnFormat;
xmlSecBnPtrxmlSecBnCreate                      (xmlSecSize size);
voidxmlSecBnDestroy                     (xmlSecBnPtr bn);
intxmlSecBnInitialize                  (xmlSecBnPtr bn,
                                                         xmlSecSize size);
voidxmlSecBnFinalize                    (xmlSecBnPtr bn);
xmlSecByte*         xmlSecBnGetData                     (xmlSecBnPtr bn);
intxmlSecBnSetData                     (xmlSecBnPtr bn,
                                                         const xmlSecByte *data,
                                                         xmlSecSize size);
xmlSecSize          xmlSecBnGetSize                     (xmlSecBnPtr bn);
voidxmlSecBnZero                        (xmlSecBnPtr bn);
intxmlSecBnFromString                  (xmlSecBnPtr bn,
                                                         const xmlChar *str,
                                                         xmlSecSize base);
xmlChar*            xmlSecBnToString                    (xmlSecBnPtr bn,
                                                         xmlSecSize base);
intxmlSecBnFromHexString               (xmlSecBnPtr bn,
                                                         const xmlChar *str);
xmlChar*            xmlSecBnToHexString                 (xmlSecBnPtr bn);
intxmlSecBnFromDecString               (xmlSecBnPtr bn,
                                                         const xmlChar *str);
xmlChar*            xmlSecBnToDecString                 (xmlSecBnPtr bn);
intxmlSecBnMul                         (xmlSecBnPtr bn,
                                                         int multiplier);
intxmlSecBnDiv                         (xmlSecBnPtr bn,
                                                         int divider,
                                                         int *mod);
intxmlSecBnAdd                         (xmlSecBnPtr bn,
                                                         int delta);
intxmlSecBnReverse                     (xmlSecBnPtr bn);
intxmlSecBnCompare                     (xmlSecBnPtr bn,
                                                         const xmlSecByte *data,
                                                         xmlSecSize dataSize);
intxmlSecBnCompareReverse              (xmlSecBnPtr bn,
                                                         const xmlSecByte *data,
                                                         xmlSecSize dataSize);
intxmlSecBnGetNodeValue                (xmlSecBnPtr bn,
                                                         xmlNodePtr cur,
                                                         xmlSecBnFormat format,
                                                         int reverse);
intxmlSecBnSetNodeValue                (xmlSecBnPtr bn,
                                                         xmlNodePtr cur,
                                                         xmlSecBnFormat format,
                                                         int reverse,
                                                         int addLineBreaks);
intxmlSecBnBlobSetNodeValue            (const xmlSecByte *data,
                                                         xmlSecSize dataSize,
                                                         xmlNodePtr cur,
                                                         xmlSecBnFormat format,
                                                         int reverse,
                                                         int addLineBreaks);

Description

Big numbers support functions.

Details

enum xmlSecBnFormat

typedef enum {
    xmlSecBnBase64,
    xmlSecBnHex,
    xmlSecBnDec
} xmlSecBnFormat;

The big numbers formats.

xmlSecBnBase64

the base64 decoded binary blob.
xmlSecBnHex

the hex number.
xmlSecBnDec

the decimal number.

xmlSecBnCreate ()

xmlSecBnPtr         xmlSecBnCreate                      (xmlSecSize size);

Creates a new BN object. Caller is responsible for destroying it by calling xmlSecBnDestroy function.

size :

the initial allocated BN size.
Returns :

the newly BN or a NULL if an error occurs.

xmlSecBnDestroy ()

void                xmlSecBnDestroy                     (xmlSecBnPtr bn);

Destroys bn object created with xmlSecBnCreate function.

bn :

the pointer to BN.

xmlSecBnInitialize ()

int                 xmlSecBnInitialize                  (xmlSecBnPtr bn,
                                                         xmlSecSize size);

Initializes a BN object. Caller is responsible for destroying it by calling xmlSecBnFinalize function.

bn :

the pointer to BN.
size :

the initial allocated BN size.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnFinalize ()

void                xmlSecBnFinalize                    (xmlSecBnPtr bn);

Destroys bn object created with xmlSecBnInitialize function.

bn :

the pointer to BN.

xmlSecBnGetData ()

xmlSecByte*         xmlSecBnGetData                     (xmlSecBnPtr bn);

Gets pointer to the binary bn representation.

bn :

the pointer to BN.
Returns :

pointer to binary BN data or NULL if an error occurs.

xmlSecBnSetData ()

int                 xmlSecBnSetData                     (xmlSecBnPtr bn,
                                                         const xmlSecByte *data,
                                                         xmlSecSize size);

Sets the value of bn to data.

bn :

the pointer to BN.
data :

the pointer to new BN binary data.
size :

the size of new BN data.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnGetSize ()

xmlSecSize          xmlSecBnGetSize                     (xmlSecBnPtr bn);

Gets the size of binary data in bn.

bn :

the pointer to BN.
Returns :

the size of binary data.

xmlSecBnZero ()

void                xmlSecBnZero                        (xmlSecBnPtr bn);

Sets the value of bn to zero.

bn :

the pointer to BN.

xmlSecBnFromString ()

int                 xmlSecBnFromString                  (xmlSecBnPtr bn,
                                                         const xmlChar *str,
                                                         xmlSecSize base);

Reads bn from string str assuming it has base base.

bn :

the pointer to BN.
str :

the string with BN.
base :

the base for str.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnToString ()

xmlChar*            xmlSecBnToString                    (xmlSecBnPtr bn,
                                                         xmlSecSize base);

Writes bn to string with base base. Caller is responsible for freeing returned string with xmlFree.

bn :

the pointer to BN.
base :

the base for returned string.
Returns :

the string represenataion if BN or a NULL if an error occurs.

xmlSecBnFromHexString ()

int                 xmlSecBnFromHexString               (xmlSecBnPtr bn,
                                                         const xmlChar *str);

Reads bn from hex string str.

bn :

the pointer to BN.
str :

the string with BN.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnToHexString ()

xmlChar*            xmlSecBnToHexString                 (xmlSecBnPtr bn);

Writes bn to hex string. Caller is responsible for freeing returned string with xmlFree.

bn :

the pointer to BN.
Returns :

the string represenataion if BN or a NULL if an error occurs.

xmlSecBnFromDecString ()

int                 xmlSecBnFromDecString               (xmlSecBnPtr bn,
                                                         const xmlChar *str);

Reads bn from decimal string str.

bn :

the pointer to BN.
str :

the string with BN.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnToDecString ()

xmlChar*            xmlSecBnToDecString                 (xmlSecBnPtr bn);

Writes bn to decimal string. Caller is responsible for freeing returned string with xmlFree.

bn :

the pointer to BN.
Returns :

the string represenataion if BN or a NULL if an error occurs.

xmlSecBnMul ()

int                 xmlSecBnMul                         (xmlSecBnPtr bn,
                                                         int multiplier);

Multiplies bn with multiplier.

bn :

the pointer to BN.
multiplier :

the multiplier.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnDiv ()

int                 xmlSecBnDiv                         (xmlSecBnPtr bn,
                                                         int divider,
                                                         int *mod);

Divides bn by divider and places modulus into mod.

bn :

the pointer to BN.
divider :

the divider
mod :

the pointer for modulus result.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnAdd ()

int                 xmlSecBnAdd                         (xmlSecBnPtr bn,
                                                         int delta);

Adds delta to bn.

bn :

the pointer to BN.
delta :

the delta.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnReverse ()

int                 xmlSecBnReverse                     (xmlSecBnPtr bn);

Reverses bytes order in bn.

bn :

the pointer to BN.
Returns :

0 on success or a negative value if an error occurs.

xmlSecBnCompare ()

int                 xmlSecBnCompare                     (xmlSecBnPtr bn,
                                                         const xmlSecByte *data,
                                                         xmlSecSize dataSize);

Compares the bn with data.

bn :

the pointer to BN.
data :

the data to compare BN to.
dataSize :

the data size.
Returns :

0 if data is equal, negative value if bn is less or positive value if bn is greater than data.

xmlSecBnCompareReverse ()

int                 xmlSecBnCompareReverse              (xmlSecBnPtr bn,
                                                         const xmlSecByte *data,
                                                         xmlSecSize dataSize);

Compares the bn with reverse data.

bn :

the pointer to BN.
data :

the data to compare BN to.
dataSize :

the data size.
Returns :

0 if data is equal, negative value if bn is less or positive value if bn is greater than data.

xmlSecBnGetNodeValue ()

int                 xmlSecBnGetNodeValue                (xmlSecBnPtr bn,
                                                         xmlNodePtr cur,
                                                         xmlSecBnFormat format,
                                                         int reverse);

Converts the node content from format to bn.

bn :

the pointer to BN.
cur :

the poitner to an XML node.
format :

the BN format.
reverse :

if set then reverse read buffer after reading.
Returns :

0 on success and a negative values if an error occurs.

xmlSecBnSetNodeValue ()

int                 xmlSecBnSetNodeValue                (xmlSecBnPtr bn,
                                                         xmlNodePtr cur,
                                                         xmlSecBnFormat format,
                                                         int reverse,
                                                         int addLineBreaks);

Converts the bn and sets it to node content.

bn :

the pointer to BN.
cur :

the poitner to an XML node.
format :

the BN format.
reverse :

the flag that indicates whether to reverse the buffer before writing.
addLineBreaks :

the flag; it is equal to 1 then linebreaks will be added before and after new buffer content.
Returns :

0 on success and a negative values if an error occurs.

xmlSecBnBlobSetNodeValue ()

int                 xmlSecBnBlobSetNodeValue            (const xmlSecByte *data,
                                                         xmlSecSize dataSize,
                                                         xmlNodePtr cur,
                                                         xmlSecBnFormat format,
                                                         int reverse,
                                                         int addLineBreaks);

Converts the blob and sets it to node content.

data :

the pointer to BN blob.
dataSize :

the size of BN blob.
cur :

the poitner to an XML node.
format :

the BN format.
reverse :

the flag that indicates whether to reverse the buffer before writing.
addLineBreaks :

if the flag is equal to 1 then linebreaks will be added before and after new buffer content.
Returns :

0 on success and a negative values if an error occurs.
<<< base64 buffer >>>