In our modern, highly connected world, where online transactions are everywhere, the looming presence of quantum computing casts a momentous shadow. Unlike classical computers, which rely on bits to process information, quantum computers leverage the peculiar properties of quantum mechanics to perform calculations at unprecedented speeds. While this promises advancements in various fields, it also poses a formidable challenge to cybersecurity.
The Vulnerability of Current Encryption Methods
At the heart of digital security lies encryption, a complex process that transforms sensitive information into indecipherable code. Traditional encryption algorithms, such as those based on factoring large numbers, are effective against classical computers but vulnerable to quantum attacks. Quantum computers, with their ability to perform vast numbers of calculations simultaneously, could render conventional encryption obsolete, posing a grave risk to sensitive data.
The Hunt for Quantum-Resistant Encryption
Recognising the imminent threat posed by quantum computing, researchers are tirelessly working to develop encryption methods resistant to quantum attacks. The US National Institute of Standards and Technology has been at the forefront of this effort, soliciting proposals for "quantum-proof" encryption algorithms. However, progress has been incremental, with few algorithms proving robust under rigorous scrutiny.
Lattice-Based Cryptography: A Promising Solution
Among the promising avenues for quantum-resistant encryption is lattice-based cryptography. Imagine lattices as grids or matrices in a multidimensional space. These structures offer a unique framework for securing data by hiding secret information within them. Picture it like a complex maze where the secret lies concealed within the intricate lattice structure. Even with the formidable processing power of quantum computers, navigating through these lattices to uncover the hidden secrets is a challenging task. This approach provides a robust defence against potential quantum attacks, offering hope for the future of digital security.
Challenges and Controversies
Recent research by cryptographer Yilei Chen has put weight on potential vulnerabilities in lattice-based encryption. Chen's findings suggested that quantum computers might exploit certain weaknesses in lattice-based algorithms, raising concerns within the cryptographic community. However, subsequent analysis revealed flaws in Chen's work, highlighting the complexity of developing quantum-resistant encryption.
The Critical Role of Mathematics
As the race to reinforce digital security against quantum threats intensifies, the role of mathematics cannot be overstated. Countries investing in quantum technology, such as Australia, must prioritise mathematical research to complement advancements in quantum computing. Only by understanding the intricate mathematical principles underlying encryption can we hope to safeguard sensitive data in an increasingly quantum-powered world.
Conclusion
In the face of rapidly advancing quantum technology, securing our digital infrastructure has never been more critical. By fostering innovation, embracing mathematical rigour, and continually refining encryption methods, we can navigate the perplexing questions posed by quantum computing and safeguard the integrity of our digital ecosystem.
Online security has grown to be of utmost importance in a digital environment that is always changing. Passkeys, a cutting-edge authentication system that is poised to transform how we protect our accounts, are being pushed for by Google and Apple, who are leading the effort.
Passkeys, also known as cryptographic keys, are a form of authentication that rely on public-key cryptography. Unlike traditional passwords, which can be vulnerable to hacking and phishing attacks, passkeys offer a more robust and secure method of verifying user identity. By generating a unique pair of keys – one public and one private – passkeys establish a highly secure connection between the user and the platform.
One of the key advantages of passkeys is that they eliminate the need for users to remember complex passwords or go through the hassle of resetting them. Instead, users can rely on their devices to generate and manage these cryptographic keys. This not only simplifies the login process but also reduces the risk of human error, a common factor in security breaches.
Google and Apple have been at the forefront of this innovation, integrating passkey technology into their platforms. Apple, for instance, has introduced the Passkeys API in iOS, making it easier for developers to implement this secure authentication method in their apps. This move signifies a significant shift towards a more secure and user-friendly digital landscape.
Moreover, passkeys can play a pivotal role in thwarting phishing attacks, which remain a prevalent threat in the online realm. Since passkeys are tied to specific devices, even if a user inadvertently falls victim to a phishing scam, the attacker would be unable to gain access without the physical device.
While passkeys offer a promising solution to enhance online security, it's important to acknowledge potential challenges. For instance, the technology may face initial resistance due to a learning curve associated with its implementation. Additionally, ensuring compatibility across various platforms and devices will be crucial to its widespread adoption.
Passkeys are a major advancement in digital authentication. Google and Apple are leading a push toward a more secure and frictionless internet experience by utilizing the power of public-key cryptography. Users might anticipate a time in the future when the laborious practice of managing passwords is a thing of the past as this technology continues to advance. Adopting passkeys is a step toward improved security as well as a step toward a more user-focused digital environment.
Email is the primary form of communication in both our personal and professional lives. Users might be surprised to hear that email was never intended to be secure due to our dependency on it. Email communication carries some risks, but you may still take precautions to protect your inbox.
What is encryption in email?
One of the most important applications for practically any organization nowadays is email. Additionally, it's among the primary methods for malware to infect businesses.
Email encryption is the process of encrypting email communications to prevent recipients other than the intended ones from seeing the content. Authentication may be included in email encryption.
Email is vulnerable to data exposure since it is usually sent in clear text rather than encryption. Users beyond the intended receivers can read the email's contents using tools like public-key cryptography. Users can issue a public key that others can use to encrypt emails sent to them, while still holding a private key that they can use to decrypt those emails or to electronically encrypt and verify messages they send.
Impacts of an Encrypted Email Service
1. Safeguards Private Data
It is crucial to ensure that only intended recipients view the material sent via email as it frequently contains sensitive data and business secrets. It is also vital that cyber criminals are unable to decrypt the data being transmitted between people.
Services for encrypted email are created in a way that protects user privacy rather than invading it. Not simply because they are run by very small teams, but also because their platforms were created with security in mind, encrypted email services are intrinsically more secure. To begin with, the majority employ zero-access encryption, which ensures that only the user has access to confidential data.
2. Cost-effective
It is not necessary to buy additional hardware whenever the server which hosts the email service currently includes encryption. Many firms have invested in their own servers although it might not be essential. A reliable third-party service is substantially less expensive.
3. Barrier Against Government Monitoring
One can learn everything you need to know about Gmail and Yahoo from the fact that no major whistleblower, activist, dissident, or investigative reporter trusts them to transmit sensitive information, at least in terms of government surveillance. Google, for instance, makes it very plain on its official website that it reserves the right to accede to requests from the government and provide useful information.ProtonMail is founded in Switzerland, a country with some of the world's strongest privacy rules.
4. Prevents Spam
Spam attachments frequently contain malware, ensuring that hackers gain access. When you or another person uses encrypted email to deliver attachments, the email includes a digital signature to verify its authenticity. No individual will accept spoofed emails this way.
Establish strong digital practices to prevent exposing oneself vulnerable. Update your hardware and software. We must improve internet security measures as our reliance on technology increases. Services for secure, encrypted email provide everything that caters to your privacy needs.
OTPs, originally presented at the Crypto’08 conference were described as a type of cryptographically obfuscated computer program that can only be run once. This significant property makes them useful for numerous applications.
The basic concept is that "Alice" could send "Bob" a computer program that was encrypted in a way that:
1. Bob can run the program on any computer with any valid inputs and obtain a correct result. Bob cannot rerun the program with different inputs.
2. Bob can learn nothing about the secret program by running it.
The run-only-once requirements encounter difficulties because it would be an easier task to install a run-once-only program on multiple virtual machines, trying different inputs on each one of them. Consequently, this would violate the entire premise of the technology.
The original idea for thwarting this (fairly obvious) hack was to only allow the secret program to run if accompanied by a physical token that somehow enforced the one-time rule for running the copy of the secret program that Alice had sent to Bob. No such tokens were ever made, so the whole idea has lain dormant for more than a decade.
OTP revived:
Recently, a team of computer scientists from Johns Hopkins University and NTT Research have established the basis of how it might be possible to create one-time programs using a combination of the functionality found in the chips found in mobile phones and cloud-based services.
They have hacked ‘counter lockbox’ technology and utilized the same for an unintended purpose. Counter lockboxes secure an encryption key under a user-specified password, administering a limited number of incorrect password guesses (usually 10) before having the protected information erased.
The hardware security module in iPhones or Android smartphones provides the needed base functionality, but it needs to be wrapped around technology that prevents Bob from attempting to deceive the system – the focus of the research.
Garbled circuits:
The research works show how multiple counter lockboxes might be linked together in order to form ‘garbled circuits’, i.e. a construction that might be utilized to build OTPs.
A paper illustrating this research, entitled ‘One-Time Programs from Commodity Hardware’ is due to be presented at the upcoming Theory of Cryptography Conference (TCC 2022).
Hardware-route discounted:
One alternative means of constructing one-time programs, considered in the research, is using tamper-proof hardware, although it would require a “token with a very powerful and expensive (not to mention complex) general-purpose CPU”, as explained in a blog post by cryptographer Mathew, a professor at Johns Hopkins University and one of the co-authors of the paper.
“This would be costly and worse, [and] would embed a large attack software and hardware attack surface – something we have learned a lot about recently thanks to Intel’s SGX, which keeps getting broken by researchers,” explains Green.
Rather than relying on hardware or the potential use of blockchain plus cryptographic tool-based technology, the Johns Hopkins’ researchers have built a form of memory device or token that spits out and erases secret keys when asked. It takes hundreds of lockboxes to make this construction – at least 256 for a 128-bit secret, a major drawback that the researchers are yet to overcome.
A bastion against brute-force attacks:
Harry Eldridge, from Johns Hopkins University, lead author of the paper, told The Daily Swig that one-time programs could have multiple uses.
“The clearest application of a one-time program (OTP) is preventing brute-force attacks against passwords […] For example, rather than send someone an encrypted file, you could send them an OTP that outputs the file if given the correct password. Then, the person on the other end can input their password to the OTP and retrieve the file.” Eldridge explained. “However, because of the one-time property of the OTP, a malicious actor only gets one chance to guess the password before being locked out forever, meaning that much weaker passwords [such as a four-digit PIN] can actually be pretty secure.”
Furthermore, this could as well be applied to other forms of authentication – for instance, if you wanted to protect a file using some sort of biometric match like a fingerprint or face scan.
‘Autonomous’ Ransomware Risk
One of the drawbacks led via the approach is that threat actors might utilize the technique to develop ‘autonomous’ ransomware.
“Typically, ransomware needs to ‘phone home’ somehow in order to fetch the decryption keys after the bounty has been paid, which adds an element of danger to the group perpetrating the attack,” according to Eldridge. “If they were able to use one-time programs, however, they could include with the ransomware an OTP that outputs the decryption keys when given proof that an amount of bitcoin has been paid to a certain address, completely removing the need to phone home at all.”
Although, the feedback on the work so far has been “generally positive”, according to Eldridge. “[Most agree] with the motivation that OTPs are an interesting but mostly unrealized cryptographic idea, with the most common criticism being that the number of lockboxes required by our construction is still rather high. There is possibly a way to more cleverly use lockboxes that would allow for fewer of them to be used.”
Voice over IP (VoIP), or IP telephony, is one of the services of the IP world that is changing the entire telecommunication’s landscape. It is a real-time service, which enables users to make phone calls through data networks that use an IP protocol.Steganography encompasses various information hiding techniques, whose aim is to embed a secret message(steganogram) into a carrier (image,audio,video). Steganographic methods are aimed at hiding of the very existence of the communication, therefore any third-party observers should remain unaware of the presence of the steganographic exchange.