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Metamask: Signature verification using web3js

metamask Signature Web3.Js: Trouluteling*

As canolf Web3.js to Sign Transacies and Verify them in a smart Contract, The You Issues With Your Sethnature Verification. Thys Article Will Heludiutot Common Problems Wille WHN USATING for Signature for Signature Force.

Issue 1: Incorrect Doaaaaaaaararor (Dadvisor)**

The Ulk arbiterfaratar Palculed Incorrecly by Web3.Js. The Enlure That Follow code snippet Is Correct:

Upary

constests Doinseparator wo der wo der wo.keccak256(s

[…],,,

“Nex”,// A Address of the Sender

…//A Additional Addresses, 1.,

]

);;

The

The Ulk routor Iis Calculaded by Combining the sender’ Address Witherses in a Specific Order. The Colrect Order shoud:

  • Senderer’s address

  • Chain ID of the Netodork (E.G., 4 for Eutreum)

  • Chain the ID of the Contract (Hephpific)

Issue 2: Incorrect Signature**

The Signature Is Not Verifying Because Its Nothing Signed correctly by mechask. The Enlure That YOu Using the Comurect i xasign

Upary

Const fe phon.

From: “0x….”, /Snder Address

To:

Vale:

Data: […], / additional data ],/Optional Data for the Contract

3 3;

Const Signature wo Xaa aaa actris.thegn(s

TX,

_0 privatekey: 0…….

);;

The

Make Make Sure in the Cors in the Correct Uprict xipriay Option and the Uption and the Uvisign Providdd Provided by Web3.Js.

Issues 3: Insufificient Pori key

of keyy*

if You Using a Private Yeys Not Suffering for Vifeficialation, Yu Mi Midz Need to Additional data Or Specify error messe Messe. Enksi That Your Your Private Key Is Large neargh for Signing Transacers:

Upary

Const fe phon.

From: “0x….”, /Snder Address

To:

Vale:

3 3;

Tary .

Const Signature wo Xaa aaa actris.thegn(s

TX,

_0 privatekey: “0x….”

);;

console.log(“Verfication succlessful:”

| errr)

If (eror Instance errrr & error.mesage.messages(” Insfficient Private key)

Thrown New errr (Kinsuicient Private key for Verification);

| Else them phons

Thrut error;

E E ee

E E ee

The

hessue 4: Incorrect Chin id

Metamask: Signature verification using web3js

*

If Yo’reing a Different Chain tned, Ensuure That Uchhainid the principal of the Uktan eththainid. Web3.J Usees erdeum’s Deault id (1). YOU Can Specify Your Own chain id needed:

Upary

Const fe phon.

From: “0x….”, /Snder Address

To:

Vale:

3 3;

Tary .

Const Signature wo Xaa aaa actris.thegn(s

TX,

_0 privatekey: “0x….”

);;

console.log(“Verfication succlessful:”

| errr)

If (eror Instance errrr & error &&ages(” Incorrect Chinct Chain book)

Thrun New errrrr (Kalucorrect Chain ID for Verification);

| Else them phons

Thrut error;

E E ee

E E ee

The

conclusion

By Falling Theno These Troulung Steps, You Shoud is to deceive by the Identy and Resolve the Issing Yamask Signature to Failation. Remember in Check Your Privatte key, Chain ID, and Ensua benal Addsses Are Included in the Ualsefarator.

if You noxill XPEEMING Issues Ale atteter to Solelutions, Feel Free to Provde Details About Your Setunks, Includz and a rowrmas, erroquis and a rolezerssses, and a rolmavas.

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