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Handle signatures for chainIds greater than 110#287
Merged
holgerd77 merged 1 commit intoethereumjs:masterfrom Feb 1, 2021
spalladino:handle-large-chainid-on-rpcsig
Merged
Handle signatures for chainIds greater than 110#287holgerd77 merged 1 commit intoethereumjs:masterfrom spalladino:handle-large-chainid-on-rpcsig
holgerd77 merged 1 commit intoethereumjs:masterfrom
spalladino:handle-large-chainid-on-rpcsig
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The signature module was assuming that the `v` recovery value fit in a single byte. With chainIds larger than 110, since `v(110) = 110 * 2 + 35 = 255`, this assumption breaks (see chainid.network for a list of chainIds with large values). This commit changes `fromRpcSig` so the recovery `v` value is not just the 65th byte of the signaure, but all bytes after the 64th.
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Hi Santiago, great find, thanks for the submission! 😄 Also perfect PR with sufficient test coverage together with perfect timing (all too good to be true, hehe 😋 ) since I was just planning to do a bugfix release on the library today. So I will directly merge and prepare a release PR including this PR here. //cc @ryanio |
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The signature module was assuming that the
vrecovery value fit in a single byte. With chainIds larger than 110, sincev(110) = 110 * 2 + 35 = 255, this assumption breaks (see chainid.network for a list of chainIds with large values).This commit changes
fromRpcSigso the recoveryvvalue is not just the 65th byte of the signaure, but all bytes after the 64th.