Encrypt specific column of Room database

I have a table with messages in a chat app and i want to use TripleDes encryption in the column body of the table in my Room Database. What i do now is that whenever i has an array of new messages i loop through them and change the .body field to TripleDes.encrypt(body)

// TripleDes encryption to inserted messages
   messageDtoList.forEach {
      if (it.body.isNotEmpty())
         it.body = TripleDesEncrypt.encrypt(it.body, Params.TRIPLE_DES_KEY)
     }               
   AppDatabase.invoke(MyApplication.instance).messageDao().insert(messageDtoList)

I wanted to know if there is a better and more formal way to do this

Using TypeConverter could be useful. I wrote a class named DecryptedString which wraps String and inner Converter class which handles encryption/decryption processes.

class DecryptedString(var value: String = "") {

    class Converter {
        @TypeConverter
        fun decrypt(encrypted: String): DecryptedString {
            return DecryptedString(TripleDesEncrypt.decrypt(encrypted, Params.TRIPLE_DES_KEY))
        }

        @TypeConverter
        fun encrypt(decrypted: DecryptedString): String {
            return TripleDesEncrypt.encrypt(decrypted.value, Params.TRIPLE_DES_KEY)
        }
    }
}

Then instead of using String type for body field, you have to use DecryptedString type in your MessageModel class.

@Entity
data class MessageModel(
        @PrimaryKey
        var uid: Int,

        @TypeConverters(DecryptedString.Converter::class)
        @ColumnInfo(name = "decrypted_body")
        var body: DecryptedString

        //Other fields
)