Hello There, When i was in a college (around 2000), i had learned an algorithm which i did not know the stuff that i learn here. They told me, it’s a very basic code that i need to achieve at first semester. I was dealing with a coding problem that involved reversing a string. 😩. […]
Hello There! Since my tooth has a hole, my doctor suggests that my tooth need to be extracted, not only causes by a hole actually, there is also malposition wisdom tooth at number 38. But, wait..? did i heard tooth number 38? Then, I realized that each tooth has its own number, almost like a tooth […]
Hello There! As you might know, NIST has acknowledged that large-scale quantum computers will threaten the security of its approved public-key algorithms. In particular, NIST-approved digital signature schemes, key agreement using Diffie-Hellman (DH) and Menezes-Qu-Vanstone (MQV), and key agreement and key transport using Rivest–Shamir–Adleman (RSA) may need to be replaced with secure quantum-resistant (or “post-quantum”) […]
Hello There! Just a quick introduction about what is the difference between double length and triple length in 3DES algorithm. I have created some small sample scripts written in Java to generate a 3DES key in different size of length. 1. GENERATING 3DES KEY IN TRIPLE LENGTH OF SIZE 2. GENERATING 3DES KEY IN DOUBLE […]
Hello There! I recently did test in my Java code to have a SQL statement for copy table from TABLE 1 toTABLE 2. I need both tables identical during the application goes boot-up. But, suddenly i got : ORA-00922: missing or invalid option. 1. ORACLE DOCUMENTATION Based on Oracle error documentation ORA-00922 says : Cause […]
Hello There! Recently, i did a POC that involving 4 databases at the same time in one application. My application just do a simple CRUD in 4 databases which are MySQL, Oracle, Microsoft SQL Server and PostgreSQL. You can image that, one application can be use 4 databases as well. THE PROBLEM At this note […]
Hello There! Just continue again what i have done in my previous note. I was writing some UDF for Oracle Database to execute a REST API to CipherTrust Tokenization Server. In this note, i will going to explain how we do REST API at the same way in Microsoft SQL. System administrators, DBAs, and application […]
Hello there! I just continue what i have done in my prior note, i did create some simple HTTP JSON POST written in C/C++, you may find it here. Today, i’m going to explain, the process and creating Oracle UDF to execute HTTPS in Oracle to Thales CipherTrust Tokenization (CT-VL). Before you begin, ensure your […]
Hello there! This note explains how to obtain and manage security credentials for Oracle Application Server resources and accessing outside database. Security administrators can use Oracle Wallet Manager and its command-line utility using orapki to manage public key infrastructure (PKI) credentials on Oracle clients and servers. These tools create credentials that can be read by […]
Hello There! Today, i’m going to explain a merchant acquiring system that i had designed in my previous company. What is acquiring bank? according to wiki, an acquiring bank (also known simply as an acquirer) is a bank or financial institution that processes credit or debit card payments on behalf of a merchant. Acquirers collaborate […]