2022-08-19
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#go
Ukeje Goodness
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Aug 19, 2022 ⋅ 6 min read

A guide to JWT authentication in Go

Ukeje Goodness I am a data analyst who writes about cryptocurrencies and decentralized ledger technologies. Find me on Twitter @Goodylili.

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2 Replies to "A guide to JWT authentication in Go"

  1. Your code is incorrect. You should be returning the secret key on the happy path of the jwt.Parse function, not an empty string. Returning an empty string results in getting an error from the jwt.Parse function. Here is the correct implementation for anybody that was stuck on this as me:

    token, err := jwt.Parse(r.Header[“Token”][0], func(token *jwt.Token) (interface{}, error) {
    if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
    return “”, fmt.Errorf(“Unexpected signing method: %v”, token.Header[“alg”])
    }
    return sampleSecretKey, nil
    })

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