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Ken Carpenter

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3 commits1 monitored projects1 candidates0 high-risk analyses

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Passport firmwareFoundation3 commits1 candidates0 high risk

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5 months, 1 week ago

FD FoundationPassport firmware BitcoinHardware wallets

SFT-6378: Fix mnemonic_to_bits() and ct_word_eq() to be constant time.

This commit fixes a timing side-channel weakness in the code that converts a BIP-39 recovery phrase (a list of words) back into the secret digital bits. Before the fix, the code stopped searching the word list as soon as it found a match a…

Timing side-channel mitigation in mnemonic decodingConstant-time string comparison added (`ct_word_eq`)Unconditional full wordlist scan to avoid index-dependent timing

f8311ca7by Ken Carpenter+238−183 files

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