keyhash.kt

val TAG = "hash"
        try {
            val info = context.packageManager.getPackageInfo("", PackageManager.GET_SIGNATURES)
            for (signature in info.signatures) {
                val md = MessageDigest.getInstance("SHA")
                md.update(signature.toByteArray())
                val hashKey = String(Base64.encode(md.digest(), 0))
                Log.i(TAG, "printHashKey() Hash Key: $hashKey")
            }
        } catch (e: NoSuchAlgorithmException) {
            Log.e(TAG, "printHashKey()", e)
        } catch (e: Exception) {
            Log.e(TAG, "printHashKey()", e)
        }