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Edited ch08_signatures.adoc with Atlas code editor

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claylock 2023-10-26 19:25:20 +00:00
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@ -635,7 +635,7 @@ The preceding protocol has several security problems. Most notable is that one
party might learn the public keys of the other parties before committing
to their own public key. For example, Alice generates her public key
_yG_ honestly and shares it with Bob. Bob generates his public key
using _zG_ – _yG_. When their two keys are combined (_yG_ + _zG_ – _yG_), the
using _zG_ – _yG_. When their two keys are combined [.keep-together]#(_yG_ + _zG_ – _yG_),# the
positive and negative _yG_ terms cancel out so the public key only represents
the private key for _z_ (i.e., Bob's private key). Now Bob can create a
valid signature without any assistance from Alice. This is ((("key cancellation attacks")))called a