DWC_Base64Encode

C Specification

#include <dwc.h>

int DWC_Base64Encode(const char *src, const u32 srclen, char *dst, const u32 dstlen);

Description

This function encodes the data designated with src in Base64 and outputs it as a char-type character string.

If NULL is designated in dst, no conversion will occur and the maximum character string length expected after the conversion is returned as the return value. The maximum character string length is a value for the worst-case conversion efficiency, so the actual length is often smaller after conversion.

The post-conversion character string does not include a NULL terminator.

This function uses a special type of Base64.
You must use the DWC_Base64Decode function to decode data encoded with this function.

Arguments

src Pointer to the data to convert.
srclen The data size of the data to convert.
dst Pointer to the buffer used to store the post-conversion data.
dstlen The size (the length of the character string) of the buffer used to store the post-conversion data.

Return Values

-1 Conversion failed.
The maximum length of the character string expected after the conversion exceeds the value of the dstlen argument.
Zero or greater The actual size (the character string length) of the post-conversion data.

See Also

DWC_Base64Decode

Revision History

07/24/2006 Added a caution note
02/27/2006 Changed description when changes were made to function arguments
01/18/2006 Initial version


CONFIDENTIAL