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redeem process - add replay protection #19

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alexeiZamyatin opened this issue Jan 12, 2019 · 1 comment

Contributor

alexeiZamyatin commented Jan 12, 2019

Add replay protection to redeem protocol, to prevent a vault from re-using the same Bitcoin transaction as proof for multiple redeemRequests.

Require the following digest is included in OP_RETURN of the redeem Bitcoin transaction:

redeemer Eth address
contract address
redeemRequestId

Contributor Author

alexeiZamyatin commented Jan 12, 2019

Requirements:

generate digest in requestRedeem. Emit raw data as event + return digest from function
verify digest is in OP_return in confirmRedeem function

alexeiZamyatin changed the title ~~requestRedeem - replay protection~~ redeem process - add replay protection

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