In the blockchain security system, the randomness of the mnemonic is the underlying cornerstone to ensure the security of digital assets.
1. Core technology: EAL6+ certified security chip
UKey uses a security chip certified by EAL6+ (Evaluation Assurance Level 6+).
Hardware True Random Number Generator (TRNG): A dedicated physical-grade TRNG built into the chip that exploits the unpredictability of semiconductor physics, such as electronic thermal noise, to generate native random sequences.
Physical protection performance: EAL6+ components have strong resistance to physical intrusion and electromagnetic analysis, which can effectively prevent malicious interference or illegal reading of the random number generator.
2. Construction of multi-source entropy pool (Entropy Pool)
To further improve the quality of random numbers, UKey combines multiple physical entropy sources to increase the entropy value of the result:
Physical noise collection: The system collects microphysical variables inside the chip and in the environment in real time.
Multi-dimensional mixing: The random bit stream generated by hardware TRNG will perform logical operations with environmental entropy sources (such as temperature fluctuations, clock jitter, etc.) to ensure that the output random seeds have statistically uniform distribution characteristics.
3. Mnemonic phrase generation standards and security
UKey strictly follows the industry-wide BIP-39 standard and converts high-quality random seeds into mnemonic sequences:
Anti-predictability: Random numbers generated based on high-intensity entropy sources make it mathematically impossible to reversely deduce or brute force the mnemonic by computational means.
Compliance and transparency: The generation process fully complies with international security audit standards to ensure the rigor of the private key derivation logic.
Offline generation: All random number generation and mnemonic phrase conversion processes are completed in an isolated environment inside the security chip, ensuring that sensitive information does not touch the Internet throughout the process.
4. Security Overview
By combining EAL6+ certified hardware and multi-source entropy technology, UKey ensures that each set of mnemonics has industry-leading randomness and attack resistance, thereby providing a solid underlying guarantee for user asset security.