非法基本64字符2D

Question

我正在构建Java Spring Boot Auth Service，该服务创建了JWT和一个使用JWT的资源服务。

我使用以下方式创建了一个公共/私钥对：

keytool -genkeypair -alias myalias -keyalg RSA -keypass password1 -keystore myclient.jks -storepass password1

然后，我使用以下方式导出了公共密钥：

keytool -list -rfc --keystore myclient.jks | openssl x509 -inform pem -pubkey

将公共密钥存储在应用程序中。

    jwt.publicKey = -----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAilGFaGPnAThX75U5w3kd
l+McOglx+wSckiBgvgomO8PkwFX3g8YaKoIsKl4FnBab5o3gylg1X0NEqdadzY/V
4SxCN1ED2y4i55BbHQ2eVAP2fNdsn0kB7GHxJsIu0hlaZSfjO7W9qtOExB4Y9LUx
4UxGckRZFoF8zdtG9gDWgFdRxrWDZ6hfsKTm3aAOhL4GpCafGDiwedM9S6f6HWGJ
BSg+aBFWtafebnei1IRNtnRBvZWND3Etj3K9nqOOwrTs8o9f3fIx5NUd4bHkBBpF
E0IXpkiZKCeLQ3kaEttWwnqUSE2WZKIPfoCc6PNVXX3FVkOJOO5/MPl/RtoOnkqR
4wIDAQAB
-----END PUBLIC KEY-----

之后我

@Value("${jwt.publicKey}")
private String publicKey;

public Claims decodeJWT(String jwt) {

    KeyFactory kf;
    PublicKey key;

    try{
        kf = KeyFactory.getInstance("RSA");
        X509EncodedKeySpec pubKeySpecX509EncodedKeySpec = new X509EncodedKeySpec(Base64.getDecoder().decode(publicKey));
        key = kf.generatePublic(pubKeySpecX509EncodedKeySpec);
    } catch (Exception e) {
        throw new RuntimeException("Failed to generate Public Key", e);
    }

    //This line will throw an exception if it is not a signed JWS (as expected)
    return Jwts.parser()
            .setSigningKey(key)
            .parseClaimsJws(jwt).getBody();
}

因此， ：

java.lang.IllegalArgumentException: Illegal base64 character 2d

谁能在这里发现我做错了什么？

干杯， 克里斯

Answer 1

我有一个问题。我使用以下命令，解决了我的问题。显然，此问题是由于字符串中的负字符而发生的。

new String(Base64.getUrlDecoder().decode());

Answer 2

your public key should not have Illegal character like '-' '\n' ...

your public key is

MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAilGFaGPnAThX75U5w3kdl+McOglx+wSckiBgvgomO8PkwFX3g8YaKoIsKl4FnBab5o3gylg1X0NEqdadzY/V4SxCN1ED2y4i55BbHQ2eVAP2fNdsn0kB7GHxJsIu0hlaZSfjO7W9qtOExB4Y9LUx4UxGckRZFoF8zdtG9gDWgFdRxrWDZ6hfsKTm3aAOhL4GpCafGDiwedM9S6f6HWGJBSg+aBFWtafebnei1IRNtnRBvZWND3Etj3K9nqOOwrTs8o9f3fIx5NUd4bHkBBpFE0IXpkiZKCeLQ3kaEttWwnqUSE2WZKIPfoCc6PNVXX3FVkOJOO5/MPl/RtoOnkqR4wIDAQAB

public static PublicKey getPublicKeyFromX509(String signType, String signKey) throws Exception {
    KeyFactory keyFactory = KeyFactory.getInstance(signType);
    byte[] encodedKey = signKey.getBytes();
    encodedKey = Base64.getDecoder().decode(encodedKey);
    return keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
}

public static void main(String[] args) throws Exception {
    PublicKey rsa = getPublicKeyFromX509("RSA", "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAilGFaGPnAThX75U5w3kd" +
            "l+McOglx+wSckiBgvgomO8PkwFX3g8YaKoIsKl4FnBab5o3gylg1X0NEqdadzY/V" +
            "4SxCN1ED2y4i55BbHQ2eVAP2fNdsn0kB7GHxJsIu0hlaZSfjO7W9qtOExB4Y9LUx" +
            "4UxGckRZFoF8zdtG9gDWgFdRxrWDZ6hfsKTm3aAOhL4GpCafGDiwedM9S6f6HWGJ" +
            "BSg+aBFWtafebnei1IRNtnRBvZWND3Etj3K9nqOOwrTs8o9f3fIx5NUd4bHkBBpF" +
            "E0IXpkiZKCeLQ3kaEttWwnqUSE2WZKIPfoCc6PNVXX3FVkOJOO5/MPl/RtoOnkqR" +
            "4wIDAQAB");
    System.out.println(rsa.toString());
}