jjwt lib
https://github.com/jwtk/jjwt
verify JWT
key参考格式如下：
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MIIBIjANBgkqhkiG5w0BAQEFAAOCAQ8AMIIBCgKCAQEAtqEIbojnolofNc39VMoX Wl/9HmCpJsAV3hM8rJFnklPRDpBI5KrymOQXep2yQuETsAoulgScYI7rPl2mp9Gb rnXkwaKOKyvgOeI2W7+xRImgCfGsSzqyK6jgmwtpIr6pDl3FqK09A+5czytAfRa2 kJNm16XnQk+sqO0O1YyUTRC3GzV6Su32v7m+0a31RgZxi+1Yp7Mrue7zlCL55xth n+8LfE5Z/zXG/KRLnKJfNn0zo7TFURPvPkpr8LYh2FrSiOYaQ3A5tZXhXiMjYnwN jKCELB/GbOMJHqae1dInEFGUDb7LZ9OYrQ8HkgyebsX3Z5oZ3CEHLkL9mJaOdEym 1wIDAQAD
JWT参考格式如下：
1
eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6ImRmMzhlMzYyLWY5MzktNDEyMy1hOWUxLTJjYThlZWI1Yjk5YyIsInRzIjoxNTIzNjAzNzk4LCJpYXQiOjE1MjM2MDI1OTd9.qy_UZVRuWcJTClYy5CMQrI4rya1MoKR-WT5mxxOGWbO334tQI2SBYyabWRpaCI2mPY9RNzfDFzmuqOvyTyryIohvWPwge9a1KesWmAyoO8_zGvVY9pt-wsKLww7bouskYJXkuBR7fd0AGganlZARR1u0csQwW27rWsY22gNQyGn1Kxlvik2Z5gV5lBttQS1Q5j0fEqI1a8W5Y3Rv8y3PlmiAoAwmuqS_j-zUygnMkmuXHXB1qnrnTMlmEymRnEbY_MXgHcYOjUT-S5yZt5wbCcSerFo4tkrxz6Um61c7HcuCEbttIV6qEHzqohkH_ksncMRX232U4lrI0lovDWwMYg
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fun (jwt: String, publicKey: String) : Claims { val key = Base64.getDecoder().decode(publicKey.replace("n" , "" )) val keySpec = X509EncodedKeySpec(key) val keyFactory = KeyFactory.getInstance("RSA" ) val public = keyFactory.generatePublic(keySpec) return Jwts.parser().setSigningKey(public ) .parseClaimsJws(jwt).body } fun isValid (token: String, publicKey: String) : Boolean { try { parseJwt(token, publicKey) return true } catch (e: SignatureException) { e.printStackTrace() } return false }
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