Setup Facebook Conceal.
Encrypt string
var encryptedData = crypto.encrypt(value.toByteArray(Charsets.UTF_8), Entity.create("Test"))encryptedData = Base64.encodeToString(encryptedData, Base64.DEFAULT)Decrypt string
var value = crypto.decrypt(Base64.decode(encryptedData, Base64.DEFAULT), Entity.create("Test"))value.toString(Charsets.UTF_8)You can write an Kotlin Extentions to encrypt and decrypt string using Facebook Conceal.
fun Crypto.encrypt(key: String, value: String): String { val data = encrypt(value.toByteArray(Charsets.UTF_8), Entity.create(key)) return Base64.encodeToString(data, Base64.DEFAULT)}fun Crypto.decrypt(key: String, value: String): String { val data = decrypt(Base64.decode(value, Base64.DEFAULT), Entity.create(key)) return data.toString(Charsets.UTF_8)}