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s of ECDSA sign value is not meet EIP-2 valid range (0 < s < secp256k1n / 2 + 1) #263

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stevenchiu7311 opened this issue Aug 31, 2023 · 0 comments
Open

s of ECDSA sign value is not meet EIP-2 valid range (0 < s < secp256k1n / 2 + 1) #263

stevenchiu7311 opened this issue Aug 31, 2023 · 0 comments
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@yycen

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@stevenchiu7311
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stevenchiu7311 commented Aug 31, 2023 •
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I tried using ECDSA entry sample to sign transaction but sometimes get s value not accepted by go-ethereum crypto.ValidateSignatureValues check.
The problem seems s value is not meet EIP-2 specification which define s value should be in range (0 < s < secp256k1n / 2 + 1).

Except resigning, could you kindly provide some advise to avoid this wrong signed result from signing flow (or convert non-EIP-2 signature to a valid EIP-2 one)?
@yycen yycen self-assigned this Sep 20, 2023
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@stevenchiu7311 @yycen