Knowledge

Horenso is one of the basic soft skills for employees. New employees often go through a Horenso training and learning process. They also need to firmly grasp the principles to ensure effective communication within the company. Many foreigners working at Japanese companies often have...

Progressive Web Apps (PWAs) is one of the new generation software, helping to increase user experience and save costs for businesses. Progressive Web Apps are commonly applied in many fields such as e-commerce and Marketing. 1. What are Progressive Web Apps? Progressive Web Apps...

Metaverse is the hottest keyword at the moment, especially after Facebook announced to change the company name to Meta and invest huge resources on developing an ecosystem that supports the Metaverse vision. So what can humans do on Metaverse and which technologies are needed...

The new trend of the video game industry in 2021 to now is GameFi. This model became popular in the last two years. So what is GameFi and why did it become a craze and attract a large number of players? Let’s find out...

Java system development is so famous in IT sector, and it is applied from web, apps, or even game. In this article, we will introduce to you about recommended 5 Java system development companies in Japan that your business can consider when having intention...

Nowsaday, most businesses use many different types of applications to improve customer service quality and increase competitiveness. However, slow application performance can affect business operations. So how can we effectively manage application performance? What software performance management tools can we turn to to solve...

The video game industry has been growing steadily in recent years. Millions of gamers are participating in NFT games and the Play to earn mechanism has attracted them to stick with the game more. If you are a newbie and want to learn about...

Developing information technology opens up many opportunities for related professions and fields, one of which is the concept of “IT infrastructure”. The following article will focus on providing useful information about IT Infrastructure and job development opportunities. 1. What is IT infrastructure? IT infrastructure...

I. What is “SaaS”? “SaaS” stands for Software as a Service. It refers to the use of applications in the form of cloud services. Based on cloud technology, SaaS is a service that provides software to end-users via the Internet. Traditionally, in order to...

Digital Twin – real-time digital simulation technology – is becoming a vital piece in enterprises’ digital transformation journey. This article compiles the list of the Top Trusted Digital Twin Technology Companies in 2025, selected based on multiple criteria. The list serves as a valuable...

Up to the present time, there is no denying the heat and strong application of blockchain globally. The impact of blockchain technology is predicted to be as large or larger than the Internet revolution. A lot of businesses have applied blockchain projects to their...

As a programmer, in recent days you have surely become familiar with the information surrounding the new feature update version of Python 3.12. Is this an upgrade worthy of users’ expectations? The article below will provide a lot of noteworthy information! 1/ What is...

Today’s IT systems are under increasing pressure from complex and constantly evolving cybersecurity threats. A single minor vulnerability can become the root cause of operational disruption, financial loss, and serious damage to a company’s reputation. Therefore, System Security Maintenance is no longer merely a...

In the era of technological development, using applications that integrate with many platforms has become a trend for users. To create those complex applications, developers use a combination of Microservices and API gateways. Let’s explore with BAP Software about Microservices and API gateways, their...

SAP business planning software was launched in 2006 and has provided enterprises with a lot of convenience. Now, SAP is getting more and more attention and the demand for using this technology system is increasing. Nevertheless, SAP ERP maintenance will end in 2027, SAP...

Software Testing is one of the important stages of the software development process. Software Testing includes many different levels and aims to improve software quality as well as enhance user experience. Although this is a term quite familiar to the technology world, many people...

Salesforce is known as a software that helps businesses to solve the sales, marketing, and customers’ management. This platform brings various benefits to improve the businesses’ performance, and satisfy customers. In addition, Salesforce is installed with ease, and businesses can customize from various functions....

In October 2021, the phrase “Metaverse” became a hot keyword and was of intense interest. The origin is from the event that Mark Zuckerberg changed the name of Facebook company to Meta (derived from Metaverse). I. So what is Metaverse? Metaverse is a combination...

Play to earn has been one of the trending keywords from mid-2021. This trend has made the cryptocurrency market more exciting than before with the appearance of a series of game projects. What makes this model attractive? Let’s find out through the following article!...

Salesforce is one of the most widely used CRM platforms in the field of business and business management. Salesforce has features such as helping to run product marketing campaigns, capture customer tastes, and provide effective customer service. To better understand this technology platform and...

Finding out various technological solutions is to satisfy businesses’ goals such as increasing sales, completing the perfect workflow, or managing Marketing activities,.. And Salesforce is the best choice for you. But “How to use Salesforce” is a problem that businesses ask much on the...

Low-code tools have received a lot of attention since the start of the COVID-19 pandemic, but at the time they were still good for what they were. BAP IT will help learn more about the benefits of using Low Code Platforms and how your...

Online payment is becoming an indispensable part of daily life, a basic feature that programmers need to focus on when developing Web apps and mobile applications. One of the factors that makes online payments safer is the Secure Payment Gateway. This is a technology...

When it comes to Web app or mobile application development, developers cannot ignore the Real-time updating aspect. This element uses time data to provide users with useful information, supporting users during remote work and other social activities. Real-time updating helps users update news and...

If we discuss the topic of which technology makes business operations more convenient and efficient, Salesforce cannot be ignored. A cloud computing technology that is popular and growing strongly in recent years, bringing a positive influence to the way many businesses operate and handle....

A QA Tester is responsible for meticulously testing and evaluating software applications to identify issues, defects, or potential inconsistencies that may affect the end user’s experience. Additionally, QA Testers work closely with software developers, project managers, and other stakeholders throughout the development lifecycle. A...

Sorry, this entry is only available in 日本語. 前回の記事で ブロックチェーン はネットワークにいる全員で台帳を共有していると言いましたね。 参考：中学生でもわかる！ブロックチェーンの仕組み それでは「悪い人が誰かの台帳にアクセスして書き換えることができるのでは？」と疑問に思う方もいるでしょう。もちろん ブロックチェーン にはデータの不正利用を防ぐ仕組みがあります。今回は不正を防ぐための３つの暗号技術について初心者にも分かりやすく説明します。 １．特定の人にしか見られないようにする暗号技術：公開鍵暗号化方式  ブロックチェーン に用いられる１つ目の暗号技術は公開鍵暗号化方式です。この技術によって、データを盗み見られたり、書き換えられたりすることを防いでいます。鍵による暗号化は共通鍵と公開鍵があります。 ブロックチェーン に用いられている公開鍵暗号化方式をより理解するために、まずは従来の方式である共通鍵暗号化について説明します。 共通鍵暗号化方式は二人が共通の鍵を持っていて、データを暗号化、復号化する方法です。これは、データを送りたい相手に事前に共通鍵を渡しておく必要があるのですが、どうやって共通鍵を渡すかが難しい点です。 情報が漏洩しやすいインターネット上で共通鍵を渡すことは危険であるため、厳重に管理されたルートで相手に渡す必要があります。また、第三者に共通鍵が流出した場合、簡単にデータを開封されてしまいます。このような鍵配送問題を解決したのが公開鍵暗号化方式です。 公開鍵暗号化方式の最大の特徴は暗号化するための鍵と復号化するための鍵が異なるということです。受信者はあらかじめ暗号化用の鍵を送信者に渡しておきます（相手に渡すため公開鍵と言われています）。 そして、暗号化された情報を復号化するための鍵は自分だけが持っておきます（自分だけが持っておくので秘密鍵と言われています）。 そして、送信者は事前に渡された公開鍵でデータを暗号化しておくります。この場合、もしデータが盗まれたとしても秘密鍵がなければ第三者は暗号文を読みとくことができません。 このデータを読むことが出来るのは秘密鍵を持っている受信者のみです。公開鍵暗号化方式は共通鍵暗号化方式の鍵配送問題を解決した暗号方式であり、情報漏洩を防ぐことができます。 しかし、注意すべき点は秘密鍵の管理です。秘密鍵が流出すると情報を盗まれる可能性があるため、秘密鍵の管理は慎重に行う必要があります。 ２．本人を証明するためのしくみ：電子署名 ブロックチェーンに用いられる２つ目の暗号技術は電子署名です。これは紙の文書におけるサインの役割を果たすもので、ネット上のなりすまし対策のために作られました。 電子署名は上記で説明した秘密鍵と公開鍵を利用していますが、注意すべき点は、電子署名と公開鍵暗号方式では鍵の役割が違うことです。 ＜公開鍵暗号方式＞ 秘密鍵：暗号文を復号化する。開鍵：平文を暗号化する ＜電子署名＞ 秘密鍵：平文に署名をする　公開鍵：署名が正しいか検証する では、電子署名は具体的にどのようにして行われるのでしょうか？メールを例にして説明します。 まず、一郎さんはまい子さんにメールを送るとき、通常のメッセージ（平文）と同時に、秘密鍵によって暗号化したメッセージ（暗号文）も同時に送ります。この過程で、送信するデータを秘密鍵を用いて暗号化することを電子署名といいます。 暗号化されたメッセージを受け取ったまい子さんは、誰の公開鍵で読めるか試してみます。すると、太郎さんの公開鍵で暗号文を読むことができました。さらに、解いた暗号文と平文を比べると一致していました。 こうして、確かに一郎さん本人からのメールだということが分かりました。このように、電子署名を用いると本人が送ったことを証明することができます。 ３．データを瞬時に照合できるしくみ：ハッシュ関数 ブロックチェーンに用いられる３つ目の暗号技術はハッシュ関数です。ハッシュ関数とは、どんな値を入力しても２５６ビットの長さの文字列が出てくる関数のことです。 どんなに長いまたは短い文字列を入力しても、一定の長さのハッシュ値が出てきます。また、入力値が一文字違うだけで、全く異なる文字列がでてきます。 ハッシュ関数の重要な特徴は一方向性です。データをハッシュ化するのは簡単ですが、ハッシュ化された結果から元のデータを推測することは不可能となっています。では、ハッシュ関数はどのように活用されているのでしょうか？ 例えば、オンラインで音楽ファイルなどのデータをダウンロードするときにハッシュ関数が役に立ちます。ダウンロード中にデータが破損する可能性がありますが、ダウンロード後に膨大なデータを隅々までチェックして破損しているかどうか調べるのは大変な作業です。 その際、ダウンロードしたデータのハッシュ値と、ダウンロード元のサイトに載っているハッシュ値を比較します。比較した結果、２つのハッシュ値が一致していれば、正常にダウンロードされたことが確認できます。...

Blockchain is one of the most sought-after technologies today. Many individual and corporate customers in many fields are looking for blockchain development services to serve their business processes. If you are also interested in blockchain development services, this article is for you. I. What’s...

I. What is Spring Boot? Which Spring Boot should businesses choose? 1. What is Spring Boot? Spring Boot is a framework built on the Spring MVC platform, a famous framework in Java. Spring is designed based on 2 principles including: Inversion of Control (IOC)...

According to Google Trends, searches and interest for the keyword “What is NFT” have increased sharply in 2021, even surpassing Dogecoin and Ethereum. Many people have been willing to spend millions of dollars to collect NFTs. So what is NFT and what makes it...