Total global spending on cybersecurity and associated risk management will exceed $150 billion by year-end, per Gartner—with cloud-based security measures growing fastest.
It's time to upgrade our encryption keys and algorithms, but what comes next? As a cybersecurity expert, I've long advocated Symmetric Key Encryption (SKE) for its superior speed over alternatives and its inherent zero-trust model—essential when small businesses face hacks every 19 seconds (Hiscock, 2018).
Discover why SKE stands out, especially amid rising quantum threats to traditional security. Read on for a detailed breakdown.
What is Symmetric Key Encryption?
Most readers know the basics, but to recap: SKE uses a single private key for both encryption and decryption, shared only among authorized parties. It's faster and often more efficient for large datasets—ideal for enterprises, governments, banks protecting transactions, or securing defense data. Paired with AES (a U.S. government-standard symmetric block cipher), it delivers robust protection, particularly for cloud environments.
SKE vs. Asymmetric Key Encryption (AKE)
AKE employs a public key for encryption and a private key for decryption. While secure due to key separation, it's slower and costlier—unsuited for high-volume data processing common in modern organizations. Savvy teams blend both for optimal coverage, but SKE excels where speed matters.
Post-Quantum Algorithms (PQA): A Viable Alternative?
PQAs aim to counter quantum threats but rely on public keys, making them 1,488 times slower in processing cycles than SKE. This hampers performance for real-world scale, exposing data longer during transmission. While promising, PQAs remain too immature for widespread adoption today.
The ideal solution balances speed, security, and quantum resistance. Enter Arqit.
Arqit and QuantumCloud
With Dr. Taher Elgamal—co-inventor of public-key cryptography and SSL pioneer—on its board, Arqit delivers QuantumCloud™, a PaaS leveraging efficient SKE distribution. “Arqit offers an easier, safer way for applications to use the Internet. Its layered approach is outstanding,” says Elgamal.
This platform addresses SKE's key distribution challenges while preserving speed and quantum-proofing keys via one-time, zero-trust generation. Tailored for cloud, blockchain, and IoT, it's proven secure in tests against quantum attacks—perfect for governments and banks.
Arqit's innovation positions it as the encryption upgrade we need now.
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