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                           Law:: 
                            authentication : the act of proving that something (such as a document) is true or genuine, especially so that it may be admitted as evidence; the condition of being so proved  (authentication of the handwriting(
                        
                        
 
                        
                            فرهنگ تشریحی - کاربردی حقوق تالیف هرمز رشدیه