fix(crypto): harden crypto module security and robustness#7

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Federico2014 wants to merge 8 commits intodevelopfrom

feature/optimize_crypto

Commits on Apr 3, 2026

fix(crypto): remove unused topicsList from shielded TRC20 log APIs
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Commits on Apr 4, 2026

Commits on Apr 7, 2026

fix(crypto): harden signature and private key validation
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Commits on Apr 8, 2026

fix(crypto): address review findings
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Commits on Apr 9, 2026

refactor(crypto): simplify SM2 to blockchain-adapted hash-signing model
Federico2014
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fix(crypto): address security review findings on HTTP status, null guards, and key length
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