nativeMain.com.algolia.client.extensions.internal.Encoding.native.kt Maven / Gradle / Ivy

Go to download

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

"Algolia is a powerful search-as-a-service solution, made easy to use with API clients, UI libraries, and pre-built integrations. Algolia API Client for Kotlin lets you easily use the Algolia Search REST API from your JVM project, such as Android or backend implementations."

The newest version!

package com.algolia.client.extensions.internal

import kotlinx.cinterop.ExperimentalForeignApi
import kotlinx.cinterop.addressOf
import kotlinx.cinterop.convert
import kotlinx.cinterop.usePinned
import platform.CoreCrypto.CCHmac
import platform.CoreCrypto.CC_SHA256_DIGEST_LENGTH
import platform.CoreCrypto.kCCHmacAlgSHA256

internal actual fun encodeKeySHA256(key: String, message: String): String {
  val algorithm = kCCHmacAlgSHA256
  val keyBytes = key.encodeToByteArray()
  val messageBytes = message.encodeToByteArray()
  val digest = UByteArray(CC_SHA256_DIGEST_LENGTH)

  @OptIn(ExperimentalForeignApi::class)
  keyBytes.usePinned { keyPinned ->
    messageBytes.usePinned { messagePinned ->
      digest.usePinned { digestPinned ->
        CCHmac(
          algorithm,
          keyPinned.addressOf(0),
          keyBytes.size.convert(),
          messagePinned.addressOf(0),
          messageBytes.size.convert(),
          digestPinned.addressOf(0),
        )
      }
    }
  }

  return Hex.buildString(digest.toByteArray())
}