Modulus Calculator

Modulus Calculator

by Theodore Dubois

8 ratings
5 reviews
Free

Details

  • Released
  • Updated
  • August 26, 2018
  • August 26, 2018

Features

Modulus Calculator screenshot #1 for iPhone
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About

This utility app functions as a standard calculator but performs all operations within a specified modulus. It supports powers and inverses, with division implemented through multiplication by the inverse. Easily switch the modulus using the dedicated indicator.

Modulus-based calculations
Support for powers and inverses
Division via modular inverse
Easy modulus switching
Calculator interface
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What's New in Modulus Calculator

1.0

August 26, 2018

This app has been updated by Apple to display the Apple Watch app icon.

User reviews

Confusion

Great - But! (Using & for the x^y key and setting mod to 37; = for the equals key, and -> for the displayed result) :
10&20 x 7 = -> 34
10&20 = -> 26, ac 26x7 = -> 34
10&20 = x 7 = -> 33 !!!
Why does touching the = key to see an intermediate result cause it to produce a wrong answer. It does this for all ax^b I’ve tried with all mod values. Is there a reason?
Otherwise a really great app!
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It ain't much, but it's honest work.

It's really basic, such that you would probably only find it useful with another calculator if that calculator doesn’t have a modulus tool (or at least doesn’t have a modulus tool that saves the value that you're modulating by; requiring you to type the value in every single time...).
Even then though, you probably would prefer to have a tool that would continuously run an equation with progressively changing variables.

In my case, I was hoping to better visualize some equations to chew on the implications of the modulus tool, to develop a deeper intuition of cryptography with key signatures, but this is not an ideal tool for that either. The issue there is that every time you hit "=", the result of any modifications is automatically put through the modulus.

An example:

Let's say that we're trying to test the difficulty of finding a multiplicative-inverse (g^-1) of a combination of 'g' (publicly shared factor) and 'n' (the value to modulate by).
You would first multiply g by some positive integer that acts as a secret key, or maybe a public key if you don't want to know the secret key first. if it's a large number, you may want to know the product first, but upon hitting the '=' you will only see the modulus output of the product, meaning you either need to have an exceedingly efficient mental multiplication ability, or use another calculator in combination with this one.

Because of this, this app is most likely to be impractical for anyone to use, unless there is an update, which is probably not gonna happen as the dev. seems to no longer be maintaining this app.
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Excellent!

Thanks for creating this easy to use Mod Calculator - very handy reference & works exactly as I would expect. A++

Great app

Modulicious

Amazing modulus app

Theodore did a good job. I r8 8/8 m8.

Developer apps

FAQ

What is Modulus Calculator?

Modulus Calculator is a utility app that functions like a standard calculator but performs all operations within a specified modulus. It supports powers and inverses, with division implemented through multiplication by the inverse.

How do I switch the modulus in Modulus Calculator?

You can switch the modulus by tapping the handy "mod" indicator on the calculator interface. This allows you to easily change the modulus for your calculations.

Does Modulus Calculator support division?

Yes, Modulus Calculator supports division by performing it through multiplication by the modular inverse. This is a standard method for division in modular arithmetic.

What kind of operations does Modulus Calculator support?

Modulus Calculator supports all standard arithmetic operations (addition, subtraction, multiplication, division) performed within a modulus. It also supports calculating powers and inverses in a modulus.

Is Modulus Calculator free to use?

Yes, Modulus Calculator is available for free. There are no costs associated with downloading or using its core functionalities.

What devices is Modulus Calculator compatible with?

Modulus Calculator is compatible with iPhones and iPods. It is designed for iOS devices.

What is the age rating for Modulus Calculator?

Modulus Calculator has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

How often is Modulus Calculator updated?

The latest version of Modulus Calculator is 1.0, last updated on August 26, 2018. As of the last update, it has not received further updates.