io.logto.sdk.core.util.GenerateUtils.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of kotlin Show documentation

the Logto kotlin sdk

The newest version!

package io.logto.sdk.core.util

import org.jose4j.base64url.Base64Url
import java.security.MessageDigest

object GenerateUtils {
    private const val DEFAULT_ALGORITHM = "SHA-256"
    private const val DEFAULT_RANDOM_STRING_LENGTH = 64

    fun generateCodeVerifier(): String {
        return generateRandomString()
    }

    fun generateCodeChallenge(codeVerifier: String): String {
        val digester: MessageDigest = MessageDigest.getInstance(DEFAULT_ALGORITHM)
        digester.update(codeVerifier.toByteArray(Charsets.UTF_8))
        val byteArray: ByteArray = digester.digest()
        return Base64Url.encode(byteArray)
    }

    fun generateState(): String {
        return generateRandomString()
    }

    private fun generateRandomString(length: Int = DEFAULT_RANDOM_STRING_LENGTH): String {
        val randomUnit8Arr = (1..length).map {
            (UByte.MIN_VALUE.toInt()..UByte.MAX_VALUE.toInt()).random().toByte()
        }.toByteArray()
        return Base64Url.encode(randomUnit8Arr)
    }
}