Function generateCodeChallenge

internal/auth/oauth.go:122–125

(verifier string)

	if _, err := rand.Read(b); err != nil {
		panic("crypto/rand failed: " + err.Error())
	}
	return base64.RawURLEncoding.EncodeToString(b)
}

func generateCodeChallenge(verifier string) string {
	h := sha256.Sum256([]byte(verifier))
	return base64.RawURLEncoding.EncodeToString(h[:])