Posts Tagged Firmcoin

Deterministic Signatures, Subliminal channels and Hardware wallets

A subliminal channel in a signature scheme allows a signing party to send a covert message to an authorized receiver of signed messages without anyone else noticing it. One property of ECDSA, DSA and many similar digital signature schemes (such as Schnorr) is that they need to produce, for each signature generation, a fresh random […]

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A disturbing idea: BitBanknotes

Prior the hack of bitcointalk.org, I received a personal message from user “btcusr” of bitcointalk asking me to take a look a thread he had started. Soon afterwards the site went down for maintenance, so I was unable to take a look. Today I did, and for my surprise I found one of those powerful […]

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