Are Quantum-Resistant Wallets Slower Than Regular Wallets?

Quantum-resistant wallets using post-quantum algorithms have different performance characteristics than ECDSA-based wallets. Some operations take longer due to algorithmic complexity, while others remain comparable. For typical user workflows, any differences are imperceptible.

Key generation in quantum-resistant wallets takes moderately longer. Generating Kyber-768 and SPHINCS+ key pairs involves more complex mathematical operations than ECDSA key generation. However, this is a one-time operation during wallet creation, completing in seconds on modern hardware.

Transaction signing with SPHINCS+ is slower than ECDSA signing. SPHINCS+ involves generating hash-based signature components across multiple tree levels. Depending on parameter selection, signing may take tens to hundreds of milliseconds versus sub-millisecond ECDSA signatures. For interactive wallet use, this difference is negligible.

Signature verification speed varies by algorithm. SPHINCS+ verification is faster than signing, typically completing quickly enough for real-time transaction validation. Kyber-768 encapsulation and decapsulation operations are highly efficient, often comparable to ECDH performance.

Data size differences affect network operations. SPHINCS+ signatures (7KB-49KB depending on parameters) are substantially larger than ECDSA signatures (64 bytes). This increases transaction size and associated fees, though efficient parameter selection minimizes impact.

Storage requirements increase modestly. Wallets must store larger public keys and manage larger transaction records. Modern devices handle these requirements without issue.

SynX implements Kyber-768 and SPHINCS+ with optimized parameters balancing security and performance. Users experience responsive wallet operations suitable for regular cryptocurrency management, with security benefits far outweighing minor performance differences.