Tag: Cryptography

J-Fall 2019: Michel Schudel – Cryptography 101 for Java developers

So you’re logging in to your favorite crypto currency exchange over https using a username and password, executing some transactions, and you’re not at all surprised that, security wise, everything’s hunky dory… The amount of cryptography to make all this happen is staggering. In order to appreciate and understand what goes on under the hood, […]

Check revocation status of certificate online via OCSP protocol using java

Check revocation status of certificate online via OCSP protocol using java language

Elliptic Curve Digital Signature Algorithm (ECDSA) – Public Key Cryptography w/ JAVA (tutorial 10)

00:08 demo the app. 02:20 send a simple ASCII message 02:32 what happens if message is signed with invalid key 03:12 what happens if message is signed with valid key 04:30 why solve ECDLP 05:56 ECDSA quick summary 06:12 What are domain params 06:35 How to calculate public key 06:57 sending ECDSA signed message 07:53 […]

Public Key Cryptography w/ JAVA (tutorial 06) – Elgamal Digital Signature

00:06 demo a prebuilt version of the application 06:14 Elgamal Digital Signature summary 08:16 Elgamal Digital Signature proof 10:24 code the application 10:42 setup the project for using JSON 11:04 go over the packages and classes that make up this app. 12:41 code the server side of this app. (Server and ServerThread classes) 14:16 how […]

Digital Signature Algorithm (DSA) – Public Key Cryptography w/ JAVA (tutorial 07)

00:06 demo a prebuilt version of the application 06:16 Digital Signature Algorithm summary 09:45 Digital Signature Algorithm proof 11:45 code the application 12:05 setup the project for using JSON 12:46 go over the packages and classes that make up this app. 14:28 code the server side of this app. (Server and ServerThread classes) 16:47 how […]