SRTS: A Novel Technique to Generate Random Text

Random texts have wide applications in day-to-day life. The most basic use of random text is in CAPTCHA generation. CAPTCHA is an abbreviation of Completely Automated Public Turing test to tell Computers and Humans Apart. It is a test that only humans can pass but current computer systems cannot. CAPTCHA protects web services from attack of codes that are automated to fill forms and overflow the servers or used for registering fake ids. They may consist of text, or distorted images containing a text. Text CAPTCHA generally employ random text generation algorithms which have flaws of quick repetitions due to low degree of randomness. They sometimes employ the pseudo random number generation techniques in which a seed is provided and the next random text or number generated follows that pattern thus repeats after a fixed interval of time. In this paper we aim at generating secured random text sequences for CAPTCHA. Text generated is completely based on date and time. These texts are breakable by normal coding and by simple users and applies the intellect of changing time to create completely new sequence whenever a user sends request for a new text. This algorithm uses the server´s date and time to generate random text which can be used in CAPTCHA generation.