risks when private key control is delegated to third parties. Research on Uruguay's implementation of Public Key Infrastructure under Law 18.600 found that centralized key custody by Trust Service Providers (TSPs) may weaken the principle of private-key secrecy, increasing exposure to man-in-the-middle attacks and raising concerns about legal non-repudiation.

Algorithms

All public key schemes are in theory susceptible to a "brute-force key search attack".

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