Thanks for posting this code!

This is great, thanks for the example, it works perfectly.

[...] and searched the web. Then I found the following blog by David Veksler — http://dotmac.rationalmind.net/2009/02/aes-interoperability-between-net-and-iphone/ , who posted the sample code for iPhone and .net. It really helped me a lot and saved ONE DAY for [...]

Hi, this is just what i was looking for… but i need decryption in PHP…:(

I’m thinking to buy this: http://www.phpaes.com on their site there’s a demo utility to encrypt or decrypt strings…but i cant get the same result as the iphone program you provided… would you please try, too? maybe im messing with mode and iv..thanks so much

hi, a quick question
i get encrypted data to export as NSString say “u+8tQsPIHhr1Ll5TKBdbdSZmLEX/cD/xYY34kLPIPFc=”

which is good, if I decrypt encrypted data it works but when I take this export string (above) and try to created NSDATA object
NSData* encData = [NSData dataWithBase64EncodedString:"u+8tQsPIHhr1Ll5TKBdbdSZmLEX/cD/xYY34kLPIPFc="];

then i cannot get encoded string decoded.

Here is full sample:

NSString * _secret = @”My Encryption Key”;
NSString * _key = @”1234123412341234″;

StringEncryption *crypto = [[[StringEncryption alloc] init] autorelease];
NSData *_secretData = [_secret dataUsingEncoding:NSUTF8StringEncoding];
CCOptions padding = kCCOptionPKCS7Padding;
NSData *encryptedData = [crypto encrypt:_secretData key:[_key dataUsingEncoding:NSUTF8StringEncoding] padding:&padding];

NSString* encDataToExport = [encryptedData base64EncodingWithLineLength:0];

// do reverse -> from encrypted data to unencrypted

NSData* encData = [NSData dataWithBase64EncodedString:encDataToExport]; // gives me 427 bytes somehow!!!!!!!!!

NSData* decryptedData = [crypto decrypt:encData key:[_key dataUsingEncoding:NSUTF8StringEncoding] padding:&padding]; // returns nil

NSString* str = [[NSString alloc] initWithData:decryptedData encoding:NSUTF8StringEncoding];
NSLog(@”str: %@”,str);

I think i am not converting encoded string correctly to base64 data.
What am I missing?

Thank you
Mark

thank you dude!
You got me out of my illiteracy…

@ mark:
had the same problem, there’s a bug in the base 64 file.

Excellent work dude.
Thanks a lot.

Thanks for the Code.
When I use this code on iPhone for hello/hello the encoded string is not QA+Ul+r6Zmr7yHipMcHSbQ==
Can you please verify there is ssome problem with the Base64
Thanks,
locoVJ

Because this was so helpful…

There seems to be a bug in the base64 file. The line with inbuf[3] outbuf[4] should be inbuf[4] outbuf[3].

And you need to use the base64 stuff if you are working off the .NET example.. So something like

NSData * encdata = [NSData dataWithBase64DecodedString:the_encrypted64strfromweb];

NSData* decData = [crypto decrypt:encdata ….

————–

Oh, and just use a 16 character key right off the bat….

Thanks

Thanks for the code. It is very useful for me.
And I would also like to thanks bbb. Otherwise, I cannot still find a way to decrypt the base32 string.

Thank you so much for finding this! I was trying to figure this out over a year ago and eventually had to move on.