Re: Share and store RSA - public key in java server and vice versa
This is what I am trying to achieve from some days now: Approach #1: ~ Android End ~ 1. Generated public and private key at an android device (using an openssl wrapper) 2. Got modulus and exponent from the generated public key ~ iOS End ~ 3. Generated public key from modulus and exponent, at ios end, using code specified in this link: http://stackoverflow.com/a/10643962/217586 4. Converted some sample string to an object of NSData using NSUTF8StringEncoding 5. Used - wrapSymmetricKey:keyRef: method defined in SecKeyWrapper class (CryptoExercise example) for encryption, and passed key obtained from step 3 and data to encrypt obtained from step 4 to it 6. Converted NSData (encrypted data) obtained in previous step to base64encoded string, shared the same to android guy ~ Android End ~ 7. Tried to decrypt the base64encoded string, using related private key Problem: getting error - too much data for RSA block Approach #2: (Got to know from this link that - https://github.com/superwills/iOSRSAPublicKeyEncryption, we are not supposed to load public keys in iOS from anything other than a certificate, so tried a different approach) ~ Terminal End ~ 1. Generated certificate using openssl commands specified in this url: http://stackoverflow.com/a/17295321/217586 ~ iOS End ~ 2. Obtained public key as specified in above url 3. Used below code to encrypt the data: SecKeyWrapper *secKeyWrapper = [SecKeyWrapper sharedWrapper]; SecKeyRef obtainedPublicKey = [secKeyWrapper getPublicKeyRefFromDerCertificate:kCertificatePath]; NSData *dataToBeEncrypted = [kStringToBeEncrypted dataUsingEncoding:NSUTF8StringEncoding]; NSData *encryptedText = [secKeyWrapper wrapSymmetricKey:dataToBeEncrypted keyRef:obtainedPublicKey]; 4. Converted NSData to base64encoded string ~ Terminal End ~ 5. Used below command to convert it back to original string: echo | openssl rsautl -decrypt -inkey rsaPrivate.pem Problem: getting error - rsa routines:RSA_EAY_PRIVATE_DECRYPT:data greater than mod len:/SourceCache/OpenSSL098/OpenSSL098-47.1/src/crypto/rsa/rsa_eay.c Any suggestions? On Fri, May 16, 2014 at 10:40 PM, ChanMaxthon wrote: > Keychain is okay, I just cannot bear the crypto libraries. > > Sent from my iPhone > >> On May 17, 2014, at 1:08 AM, Jens Alfke wrote: >> >> >>> On May 16, 2014, at 12:37 AM, ChanMaxthon wrote: >>> >>> I got fed up by Apple already and found a little BSD-licensed CXX crypto >>> library called Botan. I will either wrap it in Objective-C or rewrite it >>> for my later projects. >> >> I’m cautious of ‘alternative’ crypto implementations; there’s a lot of >> complex math and logic involved that’s easy to get wrong. I want the >> implementation I use to be as battle-tested as possible. >> >> Also, the Keychain is a valuable place to store secrets that, being built >> into the OS, offers better security than anything you can do on your own or >> with 3rd party libraries. There’s not really any other good solution for >> storing keys, short of making the user type in a strong passphrase every >> time they launch the app. Too bad the Keychain APIs are the worst part of >> the Security framework :( >> >> —Jens > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/devarshi.bluechip%40gmail.com > > This email sent to devarshi.bluec...@gmail.com -- Thanks, Devarshi ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
History of iTunes Store music previews
Hi, Is there any way to save iTunes Store music/video preview history on my Macintosh Music Library? I am developing one Mac application to save the history of played music/video by user(including music/video previews). But I observed iTunes Store is not saving music/video preview history of Anonymous user. How to save the iTunes store music/video preview history programmatically into Mac Music Library? Is it possible ? Thanks and Regards, Madhavi G. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
'nuther dumb question
Why doesn't NSData have a +[NSData dataWithString:(NSString *)] or -[NSData initWithString:(NSString *)] method? i.e. how do I convert the contents of an NSString object into an NSData object? Why? Because -[NSFileHandle writeData:(NSData *)] takes an NSData object, not an NSString object. Arrrgg. :( Also, how come NSFileHandle doesn't have a -[NSFileHandle readFileWithSeparator:(NSString *)] method so one can read in only chunks of a file (of varying size, such as CSV records, or lines in a text file, separated by \n, as opposed to a fixed size, which could be accomplished with -[NSFileHandle readDataOfLength:(NSUInteger)] instead), instead of having to read in the whole thing? Especially on iOS, where memory space is at a premium! This seems like a major oversight to me... unless maybe there's a class which provides a higher-level of abstraction, such as NSTextFileHandle? Yeah, I can drop down to the C-level fopen(), fread(), fwrite(), fclose() etc... functions, but I'm looking for an OO-way to do this. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSSharingService with Animated GIFs?
On May 16, 2014, at 10:26 AM, Charles Carver wrote: >> I'm pretty new to Objective-C, but have been mostly understanding everything >> so far. I am stuck, however, on trying to share an animated GIF through >> NSSharingService. >> >> I am attaching the image like so, where “image" is a string containing the >> URL of an animated GIF (http://i.imgur.com/V8w9fKt.gif, for example): >> >> NSImage *imageData = [[NSImage alloc] initWithContentsOfURL:[NSURL >> URLWithString:image]]; >> NSArray *shareItems = [NSArray arrayWithObjects:imageData, @“Text", nil]; >> NSSharingService *service = [NSSharingService >> sharingServiceNamed:NSSharingServiceNameComposeMessage]; >> service.delegate = self; >> [service performWithItems:shareItems]; >> >> When the code is run and the message is sent, however, the image gets sent >> as a PNG file instead of a GIF. Instead of putting an NSImage into the list, try creating an NSPasteboardItem and setting its data to be the image data and its type to kUTTypeGIF: NSData* data = [NSData dataWithContentsOfURL:[NSURL URLWithString:image]]; NSPasteboardItem* item = [[NSPasteboardItem alloc] init]; [item setData:data forType:(__bridge NSString*)kUTTypeGIF]; NSArray *shareItems = [NSArray arrayWithObjects:item, @“Text", nil]; … It may still end up as a PNG because the pasteboard server will translate from any known image type to the most common interchange formats, and the receiving end gets to pick its preferred type. If that still doesn't work, you can try putting either the original URL into the shareItems array or the file URL from a locally-saved file. Regards, Ken ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Share and store RSA - public key in java server and vice versa
On May 19, 2014, at 3:06 AM, Devarshi Kulshreshtha wrote: > 5. Used - wrapSymmetricKey:keyRef: method defined in SecKeyWrapper > class (CryptoExercise example) for encryption, and passed key obtained > from step 3 and data to encrypt obtained from step 4 to it I think you’re misusing wrapSymmetricKey. The NSData you pass into it is not the message itself; it’s a raw symmetric key. The idea is that you create a symmetric key at random (probably 32 bytes for an AES-256 key), wrap (encrypt) that key using the recipient’s public key, encrypt your actual message using the symmetric key, and then send both the wrapped key and the encrypted message to the recipient. > Problem: getting error - too much data for RSA block Yup. RSA can only encrypt a block of the same size as its key, so if you’re using RSA-2048 the maximum block size is 256 bytes. The padding formats used with RSA don’t support messages longer than that. In practice, the only things RSA encrypts are symmetric keys, never messages. (If you’re not familiar with concepts like wrapping and padding, you should really read a good book on cryptography before proceeding. It’s actually rather dangerous to work on this kind of stuff without a solid understanding of the principles, because the crypto building blocks can easily be misused to create systems that are insecure and easily exploited.) —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Not getting mouseDown: called when control-clicking in view in menu item
NSView handles rightMouseDown: differently - it calls calls menuForEvent: Documentation says in 10.7+ it should pass it up the responder chain, so you ought to get it. I'd put a symbolic break on -[NSView rightMouseDown:] and see if it's being called; that might shed some light on where it's going. On May 16, 2014, at 8:11 AM, Tim Hewett wrote: > I have tried that too, no message for that either. > > Tim. > > > On 16 May 2014, at 14:30, Eric Shepherd wrote: > >> Try implementing rightMouseDown: instead for that. >> >> Eric Shepherd >> >>> On May 15, 2014, at 12:39 PM, Tim Hewett wrote: >>> >>> I have a NSMenuItem with a custom view (inheriting from NSImageView) which >>> needs to react to mouseDown: events. An NSTrackingArea has been setup for >>> the view’s frame to enable this. >>> >>> When getting the events the modifierFlags are used to change behaviour, but >>> this doesn’t work when control is held down - no mouseDown: event occurs at >>> all (no problem with other modifier keys). >>> >>> If mouseDown: is called with no modifier keys held down and then control is >>> pressed, this can be seen in the modifier flags when the mouseUp: event >>> occurs. >>> >>> The TrackView in the MenuItemView sample code has been tested and gets >>> mouseDown: events including when control is held down, the only difference >>> seems to be that the view in that sample is defined in a XIB while the >>> problem code’s view is created programmatically. >>> >>> Is there a way that this app can get mouseDown: events when control is >>> being held down? >>> ___ >>> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >>> >>> Please do not post admin requests or moderator comments to the list. >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >>> >>> Help/Unsubscribe/Update your Subscription: >>> https://urldefense.proofpoint.com/v1/url?u=https://lists.apple.com/mailman/options/cocoa-dev/the.sheppy%2540gmail.com&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=yJFJhaNnTZDfFSSz1U9TSNMmxGyib3KjZGuKfIhHLxA%3D%0A&m=coyti1S6AoDBJ2Iq%2Fk5SXe5EGAtaBJ%2Bgszt9rNM7m3w%3D%0A&s=b1221be697f631761fc1d184ddac0643151429eb9f0d0ae13640be539a1abfea >>> >>> This email sent to the.she...@gmail.com > > > ___ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://urldefense.proofpoint.com/v1/url?u=https://lists.apple.com/mailman/options/cocoa-dev/lrucker%2540vmware.com&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=yJFJhaNnTZDfFSSz1U9TSNMmxGyib3KjZGuKfIhHLxA%3D%0A&m=coyti1S6AoDBJ2Iq%2Fk5SXe5EGAtaBJ%2Bgszt9rNM7m3w%3D%0A&s=33471d3a07dc528a4858e0d13d5e9f329ec1849e4e8473187f9e0e7577cf6e73 > > This email sent to lruc...@vmware.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: get & set firewall status
On May 16, 2014, at 6:56 PM, 2551 <2551p...@gmail.com> wrote: > Is there a Cocoa way to get get and set the status of the built-in OS X > Firewall? It’s ipfw under the hood; a web-search for that might turn up some info. Also, I suggest asking on the darwin-userlevel list, which is a more appropriate forum for this question since it isn’t about Cocoa. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: mavericks style tabs
On May 18, 2014, at 3:30 PM, SevenBits wrote: > On May 18, 2014, at 6:22 PM, Uli Kusterer > wrote: > >> On 18 May 2014, at 23:06, Luther Baker wrote: >>> Trying my hand at some Cocoa development ... is there an SDK around the >>> tabs used in Finder or Safari? >>> >>> If not, is there a popular library that folks are using ( >>> https://urldefense.proofpoint.com/v1/url?u=https://github.com/rsms/chromium-tabs&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=yJFJhaNnTZDfFSSz1U9TSNMmxGyib3KjZGuKfIhHLxA%3D%0A&m=ihAq%2F9sYJx0uRRRknJog%2Bz76%2FWSI%2FeU0Eg%2BZkq4RS%2FA%3D%0A&s=022b4bc75bb38cf30d3fe81e00ca46eb0d052c5950ac9d933cc67fd0ce296837 >>> ?) or is this something folks are >>> generally building from ground up? >> >> Which of the features do you need? Do you need to be able to >> drag/drop/re-arrange tabs? In any event, it may be helpful to know that >> NSTabView can be used without a border and without actual tabs at the top, >> as an invisible, generic paging view. So you could let that take care of >> correctly doing display, focus-switching etc. and just create a control that >> draws the actual tabs to click at. > > Of course, if you want the tabs to be on your title bar, like what Chrome and > the new Firefox do, you’ll need some NSWindow trickery. Not really - that part's easy enough with [newWindow setStyleMask:[newWindow styleMask] | NSTexturedBackgroundWindowMask]; [newWindow setAutorecalculatesContentBorderThickness:NO forEdge:NSMaxYEdge]; [[newWindow toolbar] setShowsBaselineSeparator:NO]; > > What I would personally do? I would create a view subclass and draw the tabs > myself with Core Graphics, and then add that view as a subview of the target > window’s theme view. Now *that's* trickery. My tabView is in the window's contentView, no need to poke around in the theme view: NSRect tabFrame = [tabView bounds]; NSWindow *window = [tabView window]; /* * Make the border extend to just below the top of the contentFrame. * This will draw a line and will be where the sheet appears. * If we don't set it, we'll get a random one. */ NSRect windowRect = [[window contentView] bounds]; CGFloat delta = windowRect.size.height - tabFrame.size.height + 2; [window setContentBorderThickness:delta forEdge:NSMaxYEdge]; ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: get & set firewall status
On May 19, 2014, at 12:02 PM, Jens Alfke wrote: > It’s ipfw under the hood; a web-search for that might turn up some info. > Also, I suggest asking on the darwin-userlevel list, which is a more > appropriate forum for this question since it isn’t about Cocoa. ipfw is deprecated. pf -- see pfctl(8) -- is taking its place. That may complicate things. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: get & set firewall status
Out of curiosity, in which version of the OS is pf taking over for ipfw? On May 19, 2014, at 3:26 PM, Marco S Hyman wrote: > > On May 19, 2014, at 12:02 PM, Jens Alfke wrote: > >> It’s ipfw under the hood; a web-search for that might turn up some info. >> Also, I suggest asking on the darwin-userlevel list, which is a more >> appropriate forum for this question since it isn’t about Cocoa. > > ipfw is deprecated. pf -- see pfctl(8) -- is taking its place. > That may complicate things. > ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSAlert - Default Cancel also respond to Escape?
Any ideas on how to get a Cancel button which is both the default button and responds to escape? Both require setting the button's key equivalent and there can only be one. -- Seth Willits -- Seth Willits ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: get & set firewall status
On May 19, 2014, at 1:03 PM, Alex Zavatone wrote: > Out of curiosity, in which version of the OS is pf taking over for ipfw? The switch started in Lion. I don't know if ipfw has been completely replaced. I seem to remember that some things were still being done in ipfw. Or maybe I'm thinking of the Application Layer Firewall. Marc ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSAlert - Default Cancel also respond to Escape?
On 2014 May 19, at 13:30, Seth Willits wrote: > Any ideas on how to get a Cancel button which is both the default button and > responds to escape? Both require setting the button's key equivalent and > there can only be one. Maybe override -keyDown: somewhere. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
