What are the guarantees that TLS provides without using a certificate in the scenario?

Assume a scenario where we have a modular system including:

  1. an Authentication Module (AM) which gets username and password of an internet user and issues a token for the user. User<–>AM communication is secured by TLS and AM has a certificate from a known Certificate Authority.

  2. Some services that accept {Token, Request} from users and validate Token with AM and serve the Request. Each service is implemented on an independent server.

Tokens are bearer tokens. If we enable TLS for User-Service communication, do we need to get a certificate for each (service) server to make sure that Man-in-the-middle attack is not possible and tokens will remain confidential?

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Is there a list of Certificate Authorities that provides certificates valid also for digitally sign a document?

I have to digitally sign a pdf. I created a little app using the DSS library (an EU project, based on Bouncy Castle, very simple to use) that sign the PDF with PADES using a p12 file.

I know how to create a p12 file from a certificate using openssl. The problem is I only find Certificate Authorities that provides certificates for SSL.

There’s somewhere a list of official and trusted CAs that provides X.509 certificates also for signing documents? I’m interested in pricing in particular… 😛

Thank in advance.

Is there an algorithm that provides the highest possible “sum of satisfaction” for a priority based distribution problem?

Let’s say we have n (e.g. 6) children and a box of candy. The box has k (e.g. 8) different flavours, and m (e.g. 4) piece of candy in each flavour. This question is specifically about the cases where k > n and n > m.

We can assume a maximum of a 1 piece of a flavour per person.

We ask them to make a list of the flavours from most liked to least liked, so we know the preferences of each child.

We of course want the “sum of satisfaction” to be the highest possible.

Is there an algorithm that is able to give the perfect distribution, or one that’s quite close?

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How do I enable CSR to return the default rendering for a Select column in a list view web part that provides filter values to other list web parts?

I’m attempting to override the rendering of a Select column in a list web part that provides filter values to another list web part. In the code below, I’m attempting to not display the Selector icon for the list web part providing the filter values when the first 7 characters of the “Proficiency_x0020_Level” contain the value “Level 3”. When that value is “Level 3”, I want to display the text “NA”. Otherwise, I would like to see the default selector icons displayed for the “Select” column.

In the code below, the logic for what to do when the value is “Level 3” works just fine. My problem is that I can’t figure out how to return the default format (i.e., the selector icon and it’s underlying link) for the “SelectTitle” column. When using CSR, how does one enable the default rendering of a field? Thanks!

(function () {  // Create an object that have the context information about the fields that we want to change the rendering of.   var SLevlFieldContext = {};   SLevlFieldContext.Templates = {};   SLevlFieldContext.Templates.Fields = {  // Apply the new rendering for these fields on List View   "SelectTitle": { "View": SLevlFieldTemplate}  };  SPClientTemplates.TemplateManager.RegisterTemplateOverrides(SLevlFieldContext);  })();  // This function provides the rendering logic for the list view  function SLevlFieldTemplate(ctx) {    var _SLevlvalue = ctx.CurrentItem["Proficiency_x0020_Level"];   var _subSLevlvalue = _SLevlvalue.substring(0,7)   switch (_subSLevlvalue) {   case "Level 3":   return "<center>NA</center>";  break;    default:  return ctx.CurrentItem.SelectTitle;  break;  } } 

Added the screenshot below to illustrate the outcome I experienced attempting to use Abdul’s recommendation of RenderFieldValueDefault(ctx)

Screenshot added 3/23/2018

How would I add up enumerator values such that any combination provides a unique number?

Backstory (You can skip)

I am writing a pronunciation library for irregular words. Take something like the following:

T1E1s    // tee one E one es | tee one E ones 1994-1995// 1994 (minus|dash|to|) 1995  19-mm    // 19 dash mmmmmmmmmmmmmm | 19 dash millimeter | 19 dash em em 4x4      // 4 ex 4 | 4 times 4 | 4 by 4 

What you see for every word, are the different possible interpretations. Tackling the issue is pretty taxing, but is honestly pretty straight forward. Basically, I parse the word into various types denoted by this enumerator, as such:

    enum StringType     { // Heirarchical         Acronymn                  , // "mm","мм"         Measurement               , // pound          Number                    , // 0-9          Character_Times           , // x × X         Character_Dash            , // -         Character_ForwardSlash    , // /         Character_Latin_Lower     , // a         Character_Latin_Upper     , // A         Character_Latin_Plural    , // s          Consanants_Latin_Proper   , // Fff         Consanants_Latin_Lower    , // fff         Consanants_Latin_Mixed    , // fFF         Consanants_Latin_Upper    , // FFF          Word_Latin_Proper         , // Foo         Word_Latin_Lower          , // foo         Word_Latin_Mixed          , // fOO         Word_Latin_Upper          , // FOO          Consanants_Cyrillic_Proper, // Fff         Consanants_Cyrillic_Lower , // fff         Consanants_Cyrillic_Mixed , // fFF         Consanants_Cyrillic_Upper , // FFF          Word_Cyrillic_Proper      , // Фоо         Word_Cyrillic_Lower       , // фоо         Word_Cyrillic_Mixed       , // фОО         Word_Cyrillic_Upper       , // ФОО     };  

thus, a word like 19-mm is parsed like so:

Halt: void mapper(QString) /home/akiva/Programming/Blanket/main.cpp:206 [QStringList] sp.parsedStrings() QStringList:: QStringList 0   : 19 1   : - 2   : mm QList<QCD::StringType>:: QList<QCD::StringType> 0   : Number 1   : Character_Dash 2   : Acronymn QString:: "19-mm" 

The taxing part is where I have to tackle each case with its own implementation, and by the end of this, I imagine I will have something like 500 different combinations I will need to program functions for. This is where things get messy, because I do not want this:

     if (string.types() == QList<StringType> t() << StringType::Number << StringType::Dash << StringType::Acronymn) { Number_Dash_Acronymn(); } else if (string.types() == QList<StringType> t() << StringType::Number << StringType::Dash << StringType::Number) { Number_Dash_Number(); } else if (string.types() == QList<StringType> t() << StringType::Number << StringType::Times << StringType::Number) { Number_Times_Number(); } // + 500 additional if else statements 

500 if else statements is not acceptable. An enumerator with 500 different values is also disgusting for all the reasons that you can imagine. I had floated the idea of using bitflags, but that ended up being far too limited (32 bits = only 32 parameters). Thus I think I have the best possible approach detailed below:

Actual Issue:

I want something like this:

switch (stringTypes)     case Number + Dash + Word_Latin_Lower: {         /* code */         break; } case Word_Latin_Lower + Dash + Number: {          /* code */         break; } default:         ct_Error("Failed to account for the combination: ", stringTypes);         break; } 

The obvious issue being that the first two cases have the same value, despite being in a different order. Regardless, if the code was functional, it would be foldable, readable, efficient, and easy to sort. Not to mention, I won’t have to touch my header file to add new enumerators or functions, thus drastically helping my compile times.

Thus, how should I give combined enumerators guaranteed unique values, so much so that the order it is given also guarantee a unique value, while still maintaining readability?


What happened to audio pause when maps navigation provides direction?

I know I’m not imagining things because I actually wrote an article praising this behavior on the iPhone.

Previously, when playing voice audio (e.g. podcasts), Apple Maps (navigation) would pause the audio source, play the navigation prompt, then resume the audio source.

I was just driving with Apple Maps doing navigation and Overcast playing a podcast. The collision of both voices playing simultaneously was extremely inelegant. I couldn’t decipher the navigation instructions and the podcast was a horrible mess of people talking over each other. Worse, Apple Maps was having a chatty moment where it was yammering on about stuff for about 2 minutes.

Is this just Overcast that has become broken? Is there a way to make it work properly again? Is there another podcast player that provides the desired behavior?

To be clear, when I’m playing a podcast and Apple Maps needs to play navigation instructions, I want it to PAUSE the podcast, not yammer on top of the podcast.

How can I weigh how useful a specific frequency that a network provides is?

I looked up the T-Mobile frequency chart,

Frequency bands

1900 MHz              2    4G LTE; 4G (HSPA+); 3G (UMTS/HSPA); 2G (GSM/GPRS/EDGE)  1700/2100 MHz (AWS)   4    4G LTE; 4G (HSPA+); 3G (UMTS/HSPA)                       66   4G LTE  850 MHz               5    4G LTE  700 MHz               12   4G LTE 600 MHz               71   4G LTE 

I’m evaluating a phone, the Huawei P20 Pro 128GB. This phone isn’t sold by T-Mobile but it seems to mostly support the bands, however it’s lacking support for Band 71.

  • How much service-degradation can I expect from lacking a specific band?
  • Is there any way to weigh the importance of those bands individually?

Making me even more curious, I’m currently using a Samsung S5 which was sold to me by T-Mobile, and it doesn’t support 600 MHz — maybe I’m missing out on a lot, maybe the 600 MHz band isn’t actually used anywhere?

What software provides a code editing environment on iPad?

I am seeking recommendations for code editing primarily in Java, C, C++

My research shows these as candidates to meet this need:

  1. Coda – iOS app for code editing and SSH (runing the code on remote computer) – it’s not clear how C or C++ would fit in coda, though.
  2. Blink SSH – iOS app for Mosh or SSH to control a remote computer (I can use git for moving the files), look like linux terminal but this means I’m not using iOS as the IDE and just as a window to remote to another computer

Am I missing options to have an actual environment for editing on iOS bu restricting myself to these two options. Coda as an IDE or SSH (there are many, but they all end up needing a connection to a server)?