https://randhana.com/blog Thoughtful work. Real impact. en-us pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) Fri, 08 May 2026 00:00:00 GMT https://randhana.com/blog/understanding-diffie-hellman-key-exchange https://randhana.com/blog/understanding-diffie-hellman-key-exchange A step-by-step mathematical deep-dive into how Diffie-Hellman key exchange works - from simple paint mixing analogies to the discrete logarithm problem that makes it unbreakable. Fri, 08 May 2026 00:00:00 GMT pulathisi.kariyawasam@gmail.com (Pulathisi Kariyawasam) cryptographydiffie-hellmanmathematicskey-exchangesecurityencryptionmodular-arithmetic