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fix(@desktop/keycard): resolving v param for data signed on a keycard fixed

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Sale Djenic 2023-10-27 19:10:13 +02:00 committed by saledjenic
parent 37e35d143e
commit 52d760d1b3
1 changed files with 7 additions and 3 deletions
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10
src/app_service/service/keycard/internal.nim
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@ -89,9 +89,13 @@ proc toCardMetadata(jsonObj: JsonNode): CardMetadata =
proc toTransactionSignature(jsonObj: JsonNode): TransactionSignature = proc toTransactionSignature(jsonObj: JsonNode): TransactionSignature =
discard jsonObj.getProp(ResponseParamTxSignatureR, result.r) discard jsonObj.getProp(ResponseParamTxSignatureR, result.r)
discard jsonObj.getProp(ResponseParamTxSignatureS, result.s) discard jsonObj.getProp(ResponseParamTxSignatureS, result.s)
discard jsonObj.getProp(ResponseParamTxSignatureV, result.v) var v: int
if result.v.len == 0: discard jsonObj.getProp(ResponseParamTxSignatureV, v)
result.v = "0" ## The signature must conform to the secp256k1 curve R, S and V values, where the V value must be 27 or 28 for legacy reasons.
## Transform V from 0/1 to 27/28 (1b/1c) according to the yellow paper https://ethereum.github.io/yellowpaper/paper.pdf
result.v = "1b"
if v == 1:
result.v = "1c"
proc toKeycardEvent(jsonObj: JsonNode): KeycardEvent = proc toKeycardEvent(jsonObj: JsonNode): KeycardEvent =
discard jsonObj.getProp(ResponseParamErrorKey, result.error) discard jsonObj.getProp(ResponseParamErrorKey, result.error)