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Hey guys hopefully there's a few of you are who are familiar with OTP Authentication. Anyway, I am building an iOS app for my job that is using TOTP authentication. I have everything working, except that my boss has an app on Android that uses TOTP authentication as well and he swears that we should be getting the same pin number generated from the TOTP if we do it at the same time. Both of our pin numbers are returning an 8-digit integer, but they are not the same. I am using the open source code that Google Authenticator provides, I have not touched anything with the algorithm they provided.
He insists that we should be getting the same pin number since we are going to be connected to the same database.
I know a simpler solution would be to have seperate databases, but unfortunately he's one up in command so he calls the shots. Anyone that has worked with TOTP auth before, do you know if you're suppose to get the same pins generated from two different devices if running at same time?
The function parameters for the java are two strings and a time, the function parameters for the iOS are a NSString, NSData, and a NSDate..... considering that and considering the fact that java is using BigInteger datatypes that are not supported in iOS, I have no idea how he's expecting me to spit out the same 8-digit integer that he is getting from his java OTP auth.
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On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time?
You shouldn't.
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On January 22 2015 09:11 Manit0u wrote:Show nested quote +On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't.
How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins.
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On January 22 2015 09:13 Days wrote:Show nested quote +On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins.
Just generate a nonce. Here is how: http://stackoverflow.com/questions/4145531/how-to-create-and-use-nonces
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On January 22 2015 06:26 travis wrote:
in the meantime I have another java question
Let's say I am using drawstring to draw strings to a jpanel
the strings that I am drawing are variables
how do I go about having these strings properly format within the frame? right now, if the variable is a long string, it will just keep writing and writing on one line right off the frame. but i want it to wrap to the next line of the frame when that is appropriate
ok, back to this, because I don't want to use a JTextPane
I read here
http://www.wyzant.com/resources/blogs/266636/embedding_line_breaks_in_java_literal_strings
that I can use:
String sep = System.line.separator;
String text = "This is line one." + sep + "This is line two.";
and it will separate string text into 2 lines
now, I have little idea about this, but it definitely doesn't work for me. when I try to declare "String sep = System.line.separator;", it says that it can't find variable "line".
I am using the latest JDK and netbeans
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On January 22 2015 09:43 travis wrote:Show nested quote +On January 22 2015 06:26 travis wrote:
in the meantime I have another java question
Let's say I am using drawstring to draw strings to a jpanel
the strings that I am drawing are variables
how do I go about having these strings properly format within the frame? right now, if the variable is a long string, it will just keep writing and writing on one line right off the frame. but i want it to wrap to the next line of the frame when that is appropriate ok, back to this, because I don't want to use a JTextPane I read here http://www.wyzant.com/resources/blogs/266636/embedding_line_breaks_in_java_literal_stringsthat I can use:
String sep = System.line.separator;
String text = "This is line one." + sep + "This is line two.";
and it will separate string text into 2 lines now, I have little idea about this, but it definitely doesn't work for me. when I try to declare "String sep = System.line.separator;", it says that it can't find variable "line". I am using the latest JDK and netbeans
you don't have to bind system.line.separator to a variable at all, you should just be able to use
String text = "HERE IS MY TEXT" + system.line.separator() + "HERE IS MORE TEXT" iirc
I mean you can bind it to a variable if you need it a lot but you probably need the () at the end but I've honestly never done it like that lol
At least I'm fairly sure that you can use stringbuilder that way and just use
sb.append("Text 1").append(system.line.separator()).append("Text 2");
return sb.toString();
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I don't understand and I am getting annoyed. It does not let me use system.line.separator. It says that it cannot find variable line.
I just want to declare a String that has a linebreak in it. Or I want to use drawstring to draw 2 Strings together with a line break between them.
why is this so difficult to do.
I have a workaround to make my program still function the same.. but this seems like it should be easier.
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On January 22 2015 11:10 travis wrote:
this seems like it should be easier
Welcome to programming!
You can try using the escape character for newline "\n" but I have no idea about specific Java stuff.
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On January 22 2015 11:10 travis wrote:
I don't understand and I am getting annoyed. It does not let me use system.line.separator. It says that it cannot find variable line.
I just want to declare a String that has a linebreak in it. Or I want to use drawstring to draw 2 Strings together with a line break between them.
why is this so difficult to do.
I have a workaround to make my program still function the same.. but this seems like it should be easier.
pretty sure it's your spelling:
![[image loading]](http://i.imgur.com/ft3IEqn.png)
I'm getting a line cannot be resolved or is not a field for the first one as well, which I'd assume is just the same you as yours just different IDE?
Keep in mind that particularly the 2nd one can be out of scope depending on where you use it (and put it), which would also result in the same error message I think?
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no errors in the 2nd one but
static String Intro2 = "stuff " + System.lineSeparator() + "more stuff.";
is still drawing all to one line, even though no errors.
looks like drawstring just can't handle new lines?
well that's kind of silly
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could be, never really used that. Sorry if advice was useless 
+ Show Spoiler [picture] +
I mean if that's not the issue and it works in console... yeah...
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It will work in console, just not actually drawn with paint.
I found a method for drawstring that someone else made that makes it work, though 
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On January 22 2015 09:13 Days wrote:Show nested quote +On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins.
I assume that this is for testing purposes. In this case you should get the same result/pin/token, but only if you have the same secret key on both devices.
Oh, and don't listen to this:
On January 22 2015 09:18 darkness wrote:Show nested quote +On January 22 2015 09:13 Days wrote:On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins. Just generate a nonce. Here is how: http://stackoverflow.com/questions/4145531/how-to-create-and-use-nonces
Nonces and OTP are two different things, with different uses.
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On January 22 2015 23:38 Prillan wrote:Show nested quote +On January 22 2015 09:13 Days wrote:On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins. I assume that this is for testing purposes. In this case you should get the same result/pin/token, but only if you have the same secret key on both devices. Oh, and don't listen to this: Show nested quote +On January 22 2015 09:18 darkness wrote:On January 22 2015 09:13 Days wrote:On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins. Just generate a nonce. Here is how: http://stackoverflow.com/questions/4145531/how-to-create-and-use-nonces Nonces and OTP are two different things, with different uses.
That's the problem. We have the same secret key, but we are receiving different pin/tokens from the OTP. I want to know how accurate OTP is with time, because maybe generating the APP from 2 seconds different might affect the pin that will be generated. I don't know what i'm doing wrong. I could post some of my objective C code if that could help.
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On January 23 2015 00:25 Days wrote:Show nested quote +On January 22 2015 23:38 Prillan wrote:On January 22 2015 09:13 Days wrote:On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins. I assume that this is for testing purposes. In this case you should get the same result/pin/token, but only if you have the same secret key on both devices. Oh, and don't listen to this: On January 22 2015 09:18 darkness wrote:On January 22 2015 09:13 Days wrote:On January 22 2015 09:11 Manit0u wrote:On January 22 2015 09:05 Days wrote: do you know if you're suppose to get the same pins generated from two different devices if running at same time? You shouldn't. How sure are you? This is a brand new job for me, so I really don't want to look bad. Can you please elaborate on your response so I have a more clear picture why they wouldn't generate the same two pins. Just generate a nonce. Here is how: http://stackoverflow.com/questions/4145531/how-to-create-and-use-nonces Nonces and OTP are two different things, with different uses. That's the problem. We have the same secret key, but we are receiving different pin/tokens from the OTP. I want to know how accurate OTP is with time, because maybe generating the APP from 2 seconds different might affect the pin that will be generated. I don't know what i'm doing wrong. I could post some of my objective C code if that could help.
I looked up that TOTP thingy and that standard seems to say one should work with "Unix time", which is the seconds since 1970-01-01 00:00h, so I'm thinking it's possible to get the same key if you ask in the same second.
Here's what the standard's document says: http://tools.ietf.org/html/rfc6238#section-4.2
EDIT: There's also that "time step" mentioned, and that means it can have a coarser granularity than just 1 second?
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On January 23 2015 01:22 Nesserev wrote:
Just post your question...
I'm having troubles understanding monads (statet for example) and monads transformation
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On January 22 2015 11:10 travis wrote:
this seems like it should be easier.
It is easier.
It'll just take a while for you to develop an intuitive understanding of all that stuff.
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does swing have a menu thats like what you would see in a typical old school rpg?
like where it says like
'items'
'stats'
'equip'
and you can pick between them
what swing component would i want to use for that?
I guess i'll need to learn to make my own?
or would I use a "list" for this?
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EPT![[image loading]](http://i.imgur.com/E8xyLJY.png)
