Kotlin Hashing

Hashing is an important concept, it has numerous applications, and it’s at the core of many other computer science concepts.

HashUtils.kt is a very simple, yet very helpful snippet I’ve used in some of my applications when I need some basic hashing. It’s an extension function, one of Kotlin neat features.

package com.isscroberto.onebreath.utils
import java.security.MessageDigest
enum class Algorithm(val code: String) {
SHA1("SHA-1"), SHA256("SHA-256"), SHA512("SHA-512")
fun String.hash (algorithm: Algorithm): String {
val hexArray = "0123456789ABCDEF"
val bytes = MessageDigest.getInstance(algorithm.code).digest(this.toByteArray())
val hash = StringBuilder(bytes.size * 2)
bytes.forEach {
val i = it.toInt()
hash.append(hexArray[i shr 4 and 0x0f])
hash.append(hexArray[i and 0x0f])
return hash.toString()

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val text = "hello"
val hashedText = text.hash(Algorithm.SHA256)


Los Cracks – Fútbol Virtual

Los Cracks – Fútbol Virtual it’s a cool game for soccer lovers, built by EPCON CCS; it allows you to choose your favorite soccer players from the Liga MX and earn points every week based on your team performance.

Challenge yourself and compete against everyone in the general group or play with your friends in private groups.

This game works exclusively with real data from Liga MX.

Available for iOS and Android.