International Journal of Emerging Trends & Technology in Computer Science (IJETTCS)
The researchers introduced the idea of public-key cryptography. In their paper, they proposed the use of different keys for encryption and decryption and introduced the notion of trapdoor one-way functions. A trapdoor one-way function is a function that can be computed efficiently but for which there is no efficient algorithm that inverts the function without the knowledge of a certain trapdoor. They only presented the properties such a function should possess and did not provide any specific example of such a function.