Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
24 November 2023 | Story André Damons | Photo SUPPLIED
Ricus Krause, an honours student in the Department of Computer Science and Informatics at the University of the Free State (UFS)
Ricus Krause, an honours student in the Department of Computer Science and Informatics at the University of the Free State (UFS), receives his awards during the Suid-Afrikaanse Akademie vir Wetenskap en Kuns (The South African Academy for Science and Arts) Student Symposium in Natural Sciences.

An honours student in the Department of Computer Science and Informatics at the University of the Free State (UFS) project on using blockchain technology to protect whistleblowers secured him first place for the best project and presentation in his session at the annual Suid-Afrikaanse Akademie vir Wetenskap en Kuns (The South African Academy for Science and Arts) Student Symposium in Natural Sciences.

Ricus Krause, who presented his project, titled “Blokskakel Fluitjieblaser-Stelsel” (Blockchain Whistleblower System), at the symposium, also received the Eureka DIY Solutions Prize for an Outstanding Contribution to Computer Sciences and Mathematical Sciences. The symposium was hosted by the University of Pretoria in October.  

His research aimed to address the shortcomings of current systems for protecting whistleblowers and to design a robust computer system that ensures the confidentiality and integrity of information by using blockchain technology. This system had to protect whistleblowers’ identities and securely preserve evidence of corruption. 

Interested in Cybersecurity

“I have been interested in Cybersecurity ever since I started studying. I approached Dr Wynand Nel (supervisor) at the start of my honours year to ask if he had any ideas for a security-focused project, and he introduced me to blockchain technology and the blockchain research group. Blockchain piqued my security interest and allowed me to explore the field further.”

“After meeting with the group, the idea of a blockchain-based system for whistleblowers was born, and I started researching South Africa’s biggest problems, where corruption is at the top. During my initial research, I also discovered that whistleblowers face extreme consequences much more frequently than we think,” says Krause. 

He identified the main problem with whistleblowing as the revelation of a whistleblower’s identity before it is safe. Thus, a system was needed to protect a whistleblower’s anonymity and facilitate safe communication to contact investigators.

On winning the awards, Krause said he knew he was competing against master’s and PhD students and did not expect to win. “This was the first time I’d presented my project at an event, so I was surprised when my name was called for the first prize in my session. I wanted to pinch myself to make sure I wasn’t dreaming.”

“I am genuinely grateful to have had the opportunity to present months of research to my peers and experts in their fields. I will always look back at the event with fond memories. I am proud of myself and my fellow students for presenting their research at the symposium when others did not dare to,” he says. 

Address shortcomings of current systems

Krause is supervised by Dr Nel and Dr Rouxan Fouché, lecturers in the Department of Computer Science and Informatics and this research project falls within the department’s research focus area of Blockchain Technologies, headed by Dr Nel. The digital transformation of industries, known as Industry 4.0 has already started, and blockchain forms part of the digital revolution. The research areas include blockchain algorithms and data structures, blockchain security, blockchain applications and crypto assets.

With the recent high-profile killings of two whistleblowers in South Africa and with many other whistleblowers becoming victims of intimidation and violence to silence them after their identities were exposed, the researchers believe it is necessary to conduct research and develop a computer system to address the glaring shortcomings of current systems.

“Our research identified blockchain technology as a potential solution that meets these needs. Blockchain provides an immutable structure, supports non-repudiation, and grants accessibility to all stakeholders. It has the potential to provide a security-focused system that preserves the confidentiality and integrity of evidence. The system involves the anonymous registration of whistleblowers, the processing and storage of evidence, and the use of cryptography to ensure the privacy of messages,” says Krause. 

According to him, implementing this system in the real world, including the composition of the blockchain structure, seems daunting, especially regarding scalability and legal issues. With this project, he explains, they built a working blockchain system on a single computer. The project can be improved by expanding the blockchain system to multiple nodes communicating over a network. This improvement will take the Blockchain Whistleblower project from a concept to a valuable contribution to society.

How it works

“In a nutshell, this research has highlighted the potential of a blockchain-based whistleblower system to overcome the challenges surrounding corruption. It is a step forward in the fight against crime and the protection of those with the courage to expose misconduct. However, it is essential to continue with research and implementation to make this system a reality and fulfil its promise,” Dr Nel says.  

Traditionally, Krause explains, a central system is used where a single organisation controls the system. The potential danger is that the system provider becomes a single point of failure for the system and, thus, a target for cyberattacks. Another concern of a centralised system is the organisation’s ability to manipulate data and uncover the identities of whistleblowers. The integrity of the evidence can also be questioned when it is stored in a centralised database where modifications from a single point of access can affect all data.

A centralised system, therefore, would not be reliable enough for the high-risk circumstances of whistleblowers. They have concluded that a distributed or decentralised system would be an appropriate solution to the problem. A distributed system will continue to function as a whole even if a part is compromised.

The Blockchain Whistleblower System aims to make a proof-of-concept contribution to the field of blockchain technology. The system is installed locally on the user’s computer, where whistleblowers and investigators use an anonymous profile to interact with the system, which interacts with the blockchain. After signing in, users can choose to report a new incident or view messages on the blockchain.

Reporting a crime 

If the user wants to blow the whistle on a crime, the process starts with a report to gather more information about the incident. The whistleblower then selects the evidence of the crime on their computer. A hash function algorithm processes the evidence to create a fixed-length evidence hash. Hashing is a one-way cryptographic process that uniquely represents the input data. It is important to note that only the evidence hash is stored on the blockchain, not the evidence itself. The selected evidence is stored in a password-protected encrypted folder on the whistleblower’s computer. Investigators can later use this evidence hash to verify the integrity of the evidence when they eventually receive it.

What is next for this project? 

Krause says he would like to implement his project with nodes communicating via a network in the future. A network opens a new box of security considerations to explore and discover and would also enable the programme to be used at any location, making it accessible to whistleblowers everywhere.

“This project started with the idea to protect whistleblowers’ identities and provide a platform for them to contact investigators safely. The end goal is for the project to provide a platform where whistleblowers can anonymously report misconduct, safely communicate with investigators, and verify the integrity of their evidence.

“My hope for the project is to build a better South Africa by fighting corruption, one of the biggest obstacles to our country’s growth. By solving the many challenges whistleblowers encounter, I hope to foster a culture where whistleblowers are not afraid to speak out against crime.”

News Archive

Volksblad: Moshoeshoe Memorial Lecture
2006-05-27

27 Mei 2006

Moshoeshoe het mense saamgebind
KONING MOSHOESHOE kon bewys dat verskeidenheid ’n bindende eienskap kan wees. Dit blyk ’n sleutelbeginsel van sy leierskap te wees – en dit is nie ’n maklike een om te begryp nie.

Jy bereik die grootste eenheid tussen onderskeidende entiteite waar jy relatief vrye ruimte aan hulle gee om hul eiesoortige kenmerke na vore te bring.

Dít blyk uit prof. Njabulo Ndebele se gedenklesing oor koning Moshoeshoe.
Lesotho; het; onder Moshoeshoe se leierskap mense van verskeie dele van die subkontinent gelok.
Dié mense het hierheen gevlug van die verwoesting wat as lifaqane bekend geword het toe Shaka sy koninkryk met militêre onderwerping verstewig het.

Ndebele het gesê daar is algemene ooreenkoms dat die oorloë wat hieruit gespruit het, die maatskaplike grondslae van talle samelewings in Suider-Afrika geskud het.

“Dit was in dié konteks dat Moshoeshoe leierskap getoon het.”
Prof. Frederick Fourie, rektor en visekanselier van die Universiteit van die Vrystaat (UV), het gesê die lesing vorm deel van ’n groter debat oor leierskapmodelle, veral die konsep van Afrika-leierskap, en die voortgesette diskoers oor nasiebou en versoening.

Die Moshoeshoe-projek is in 2004 aan die UV begin om met Suid-Afrika se eerste dekade van demokrasie saam te val.
Die projek was deel van die UV se eeufeesvieringe in 2004.
Met dié projek word geprobeer om ’n groot Afrika-leier te vereer en die UV se verbintenis tot transformasie te toon sodat ’n ware inklusiewe en nie-rassige universiteit geskep kan word.

“As die stigter van die Basoeto-nasie, word daar wyd erkenning aan koning Moshoeshoe vir sy buitengewone leierskapstyl gegee.

“Diplomasie, versoening en vreedsame naasbestaan is van die kenmerke van sy leierskap, soos getoon in sy pogings om verskillende groepe in een nasie te verenig,” sê Fourie.

KONING MOSHOESHOE, een van Afrika se eertydse groot leiers. Hy is meer as 130 jaar gelede dood. Foto: verskaf

Waarde van openbare spraak ‘nou bedreig’
AANDUIDINGS bestaan dat die waarde van openbare spraak wat hoog deur koning Moshoeshoe van Lesotho op prys gestel is, nou onder ernstige bedreiging kan wees.

Om dié rede dra hy die koning Moshoeshoe-gedenklesing op aan al dié mense in Suid-Afrika en elders wat die moed het om hul oorwoë mening uit te druk oor belangrike sake wat die samelewing in die gesig staar, het prof. Njabulo Ndebele, visekanselier van die Universiteit van Kaapstad, gesê.

Ndebele, wêreldbekende skrywer, het gesê dié lesing kom op ’n kritieke punt in Suid-Afrika se nuwe demokrasie.
Dié lesing, om die buitengewone nalatenskap van een van Afrika se groot leiers te eer, is eergisteraand op die kampus van die Universiteit van die Vrystaat (UV) gelewer en het ’n staande toejuiging deur ’n groot gehoor uitgelok.

Ndebele het gesê die mense wat hul menings uitdruk oor belangrike sake, kan rubriekskrywers, redakteurs, kommentators, alle soorte kunstenaars, akademici, koerantbriefskrywers, nie-gewelddadige optoggangers met plakkate en strokiesprentkunstenaars wees “wat ’n spieël voor ons oë sit”.

“Selfs wanneer hulle dit waag op heilige gebied, soos sommige strokiesprentkunstenaars onlangs gedoen het, herinner hulle ons net dat selfs die heilige misbruik kan word vir doeleindes wat min met heiligheid te doen het.

“Dit is hul manier om ons te help, dalk meer diepsinnig as wat ons besef, om daardie einste ruimte van heiligheid in ons lewe te bewaar.

“Hulle verdiep ons insigte deur ons begrip te verdiep.
“Dit is gepas om hul dapperheid te vier,” het Ndebele gesê.
“Hulle herinner ons dat leierskap nie al is wat ons doen wanneer ons in ’n sekere magsposisie geplaas is om ’n organisasie of ’n sekere instelling te stuur nie.”

Hy het gesê onder die mense wat gevier moet word, sluit hy nie dié in wat deur haatspraak ander aanhits om geweld te pleeg; teen; mense; wat hul andersdenkende menings lug nie.

“Dit is nie met dapperheid dat hulle aanhits nie, maar weens hul toevlug tot die narkotiese beskerming van die skare.”

Mense voel glo ál kwesbaarder
Vise-kanselier lewer Moshoeshoe-gedenklesing
’n TOENEMENDE aantal hoogs intelligente, sensitiewe en toegewyde Suid-Afrikaners oor die klas-, ras- en kulturele spektrum heen bely dat hulle – soos nog nooit tevore nie – onseker en kwesbaar voel sedert 1994.

Só het prof. Njabulo Ndebele, vise-kanselier van die Universiteit van Kaapstad, gesê in die Universiteit van die Vrystaat (UV) se eerste koning Moshoeshoe-gedenklesing.

Die onderwerp was Reflections on the leadership challenges in South Africa.
Wanneer ontembare optimiste beken hulle voel dinge is van stryk, versprei die naarheid van angs. “Dit moet iets te doen hê met ’n ophoping van gebeure wat die gevoel van dreigende inploffing oordra.”

’n Gevoel heers dat Suid-Afrika ’n baie komplekse samelewing het wat liewer eenvoudige, gesentraliseerde beheer voortbring in die hoop dat dienslewering dan beter en vinniger gedryf kan word. Die kompleksiteit van beheer word dan in ’n enkele struktuur van gesag gevestig, eerder as in die afgewentelde strukture soos wat in die Grondwet beoog word.

Dat die afgewentelde strukture nie hul grondwetlik-gedefinieerde rolle verwerklik nie, moenie toegeskryf word aan die mislukking van die beheermeganisme nie.

“Dit is te vroeg om te sê dat wat ons sedert 1994 bereik het, nie gewerk het nie,” het Ndebele gesê.
Dit lyk of ’n kombinasie van omstandighede tot die “gevoel van ontknoping” lei.
“Ek wil dit vermy om te sê: ‘Kyk na Khutsong’, asof u sal verstaan wat ek bedoel wanneer ek sê u moet na Khutsong kyk.”
Sulke kennis lei tot wanhoop, want dit roep ’n werklikheid op wat só oorweldigend is dat dit fatalisties kan wees.
Ndebele het gesê niks kon meer vreesaanjaend wees as toe ’n komplot van die Boeremag oopgevlek en sekere Boeremaglede aangekeer is nie.

Sekere Boeremaglede het van ’n maksimum-sekuriteit-tronk ontsnap. “Sover ek weet, is hulle nie weer gevang nie.
“Wat is gedoen om die gaping te oorbrug?” was een van sy vrae hieroor.
“Van só ’n belangrike saak weet die publiek nie baie nie. Die karige kommunikasie kan die gevaarlike boodskap uitdra dat óf niks gedoen word nie, óf die staat in dié saak misluk.”

Hy het gevra: “Hoekom het die kwessie van munisipale afbakening tot die situasie in Khutsong gelei? Dit lyk of die probleem voortgaan, sonder ’n oplossing in sig.”

’n Aantal soortgelyke, oënskynlik plaaslike rebellies het oor die land heen plaasgevind. “Is hier ’n patroon?”
Ndebele het na die onlangse verhoor van oud-adj.pres. Jacob Zuma, wat van verkragting aangekla was, verwys.
Dié drama blyk ver van oor te wees. Dit beloof “om ons almal sonder verligting te hou, in ’n toestand van angs”.
Die gemene draad van dié gebeure is die gevoel van ’n oneindige spiraal van probleme wat vertroue tap. Daar kan ’n sterk suggestie in al dié gebeure wees “dat ons dalk nooit sosiale samehang in Suid-Afrika gehad het nie...”

“Wat ons sekerlik oor dekades gehad het, is ’n mobiliserende visie. Kan dit wees dat die mobiliserende visie onder die gewig van die werklikheid en omvang van maatskaplike heropbouing kraak en dat die legitieme raamwerk om oor dié probleme te debatteer ineenstort?”

‘Swart mense staar hulself in die gesig’
DIE swart meerderheid staar homself nou in die gesig: dalk werklik vir die eerste keer sedert 1994.
Só het prof. Njabulo Ndebele gesê toe hy die koning Moshoeshoe-gedenklesing by die Universiteit van die Vrystaat in Bloemfontein gelewer het.

Hy het gesê dit lyk of Suid-Afrika ’n meganisme nodig het om selfvertroue te bou.
Deur dié meganisme “kan ons die situasie waarin ons is, erken, wat dit ook al is”.
“Ons het ’n meganisme nodig wat die verskillende posisies van die mededingers sal bevestig en hul eerlikheid sal bekragtig op ’n manier wat die publiek vertroue sal gee dat werklike oplossings moontlik is.”

Dit is dié soort “openheid wat nooit maklik kom nie”, wat lei tot deurbraak-oplossings.
Ndebele het gesê ’n komplekse demokrasie soos Suid-Afrika s’n kan nie oorleef met ’n enkele gesag nie.
Net veelvuldige owerhede binne ’n grondwetlike raamwerk “het ’n ware kans”.
“Kan ’n deel van die probleem wees dat ons nie in staat is om die idee van ‘opposisie’ te hanteer nie?
“Ons is verskrik dat enige van ons ‘die opposisie’ kan word.
“Dit is tyd dat ons die koms voorsien van ’n oomblik wanneer daar nie meer ’n enkele, oorweldigende, dominante politieke mag is soos wat nou die geval is nie.”

Ndebele het gesê: “Ek glo ons het dalk ’n oomblik bereik wat nie fundamenteel verskillend is nie van die ontnugterende, tóg hartversterkende nasiebourealiteite wat gelei het tot Kemptonpark in die vroeë jare negentig.”

“Die verskil tussen toe en nou is dat die swart meerderheid nie nou na wit landgenote oor die onderhandelingstafel kyk nie.

“Die swart meerderheid staar homself in die gesig: dalk werklik vir die eerste keer sedert 1994.”
Dit is weer “tyd vir visie”, het Ndebele gesê.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept