How to encode and decode Files as Base64 in Cocoa / Objective-C

Question

I am currently trying to get a small soap client to work, which includes to send a certificate file within the xml of the request.

I have no trouble getting the file

Answer 1

Here is a base64 encoding done with CommonCrypto:

it is very easy code, it would not be difficult to put it in a category

if you add this to your project you need also to add the Security.framework

#include 
#include 

static NSData *base64helper(NSData *input, SecTransformRef transform)
{
    NSData *output = nil;

    if (!transform)
        return nil;

    if (SecTransformSetAttribute(transform, kSecTransformInputAttributeName, input, NULL))
        output = (NSData *)SecTransformExecute(transform, NULL);

    CFRelease(transform);

    return [output autorelease];
}

NSString *base64enc(NSData *input)
{
    SecTransformRef transform = SecEncodeTransformCreate(kSecBase64Encoding, NULL);

    return [[[NSString alloc] initWithData:base64helper(input, transform) encoding:NSASCIIStringEncoding] autorelease];
}

NSData *base64dec(NSString *input)
{
    SecTransformRef transform = SecDecodeTransformCreate(kSecBase64Encoding, NULL);

    return base64helper([input dataUsingEncoding:NSASCIIStringEncoding], transform);
}