使用dgrijalva/jwt go包生成jwt令牌RS256时出现问题

为什么我总是在下面的简单代码中出现“key is invalid”错误。 我已经尝试使用不同的私钥，但结果相同。请帮助我，因为我不知道我做错了什么

package main

import (
    "fmt"
    "log"

    "github.com/dgrijalva/jwt-go"
)

var key = `-----BEGIN RSA PRIVATE KEY-----
MIIEowIBAAKCAQEAuMVb3lrWKlmGIzTaJqtVJi2rPIy7/BkRKlAZ7Q1u0VlyOhzI
cXq6zAGsh31uWeJBJFKrZdwA6b2LD5vscnuilHi0nfQZA5l+meQT9LJ7STnfJ7f8
1CniBIhj5g6dOva9o/ljrLCmRSE4MjJRl3LkydvrHNokzicOAvieq4BYgHVJ2DC7
r7cSWrHeIiBIEBb1zAghc1OxtkFkxumva2gmywq0zB0VfzsYrtSpWT77qSNA+UEH
H+UCahefkun1uaBcOrEIPUh/j95N3rFTAdIAzFvDqLvLdQbmm/NT78O7izSGvJ1K
4rM2fSiecALSROZqOeJy3pf2v6Caqlp2gdDHUQIDAQABAoIBAEeOBrnhq7bS3KOd
wC3hhCQ442ubhOFoQ8GDK8clwJjKbvYaV3W69cQzkcEWzjl46YlLipzzyla61LPC
ypq7Tob5B9lzwowmUWT/csr8o8oD42vaUMtJPQJMX4OkfTdsfpyV5AfokTuMVdr6
qaZhFEEoLbEKud4sObzk023PUnbMTMyz2weQsmVLT9gm64K9GHzauoEDWGpr3Boz
+mEKo9rhySeK73qXqJFFATl0IB50GpdKondere/XofLQ2kqUB2fFEWIeRXawFd4u
6yE5nxjhIvn9pqMhW48vPAYtwTUhY8OxpCwk9U+awBYMvkCnFlrO4TwCNFqE8j3/
r6YN5VECgYEA2c0GqQVfwbcgB+8pLmd8H7dq+HqHToTA00pgNAsl/LRFUhkIVyY1
YUJkr7nJ3ogzqyjNBz0K4JeaMbMxJRwbxu4SUBgmvc+3h0oa9ibTKtBH4KWAqwCC
3TLQFoMXJCf+YJOL8ZNeqQz4rEpCVvJj86p9F4iTRhl5bd7mYqiEjusCgYEA2S1U
19iAIEiSETtUWEzj/iAKOUZJKl4Kz6PVfUMT1lqodOHsNHexzcQs+W/LW/Z9Jr7u
JtdC0ZZl2UCQ8PBTirsA/gimisnmVhx3mvKXOOO/Cf8RpN1/faTnQJj/Tu+h3aV7
n53Av2wSQPoWnnNB9W515gTYqwiV//CX44lGS7MCgYEAmjSoj4kniB8hBZ0WOi24
2zfg+/a80CH76F1TieWOysHUBtGEbze1OZxpb2WKgQ1MD9Y+e+6DQgr0eFXX6N9i
51DuFFlVLLThy17zge5xOnHnQi3L0Mb24Kg2XooIG2hZmYU94xelQOnXMx0MpUTO
8dl24e+n3kzxBZJ46cdIu2sCgYBzz5yizazlik16Ku07eSVLasKI8FYr5aJWP8Ok
3JRDhmy2h5NyFzIVzDs/eMI09Cig9MgCpl/XbCA7zhZ8pWunWzmYPfyxniDaYqvV
UPAbQjepmP9Lr2JBGiLHa88ZxOfITmqyH2mdqn/BbpuJO2U8//6W/pab/iQfK6mT
iKyXyQKBgGb49CT+zi1VCa4jh0EH78odTwRb/PleAw25CLVSj35MqQCEA2/jU92g
P8iTDU5mDNEaQMvMYN1fKiAPm6hiKp9/5Q02zQWNVzOywgc0L41Yb9K/SqxGwITa
dFwwxhKgBqzgCeIpvKLCGrhMztzPjUL9o4MSdNa92vajcilr8ld6
-----END RSA PRIVATE KEY-----`

func main() {
    token := jwt.New(jwt.SigningMethodRS256)
    jwt, err := token.SignedString(key)
    if err != nil {
        log.Println(err)
    }
    fmt.Println("jwt=", jwt)
}

输出：

2021/04/06 16:48:52密钥无效

jwt= 我的钥匙怎么了

我用以下方法生成了它：

ssh-keygen -t rsa -P "" -b 2048 -m PEM -f jwtRS256.key
ssh-keygen -e -m PEM -f jwtRS256.key > jwtRS256.key.pub

---

谢谢您

RSA系列算法需要类型为

*RSA.PrivateKey

的密钥。库

dgrijalva/jwt go

有一个助手函数

jwt.parsersaprivatekeyfromfrompem（keyData）

，其中

keyData

是一个

[]字节

切片

回购协议中有一些方便的例子

此外，这些示例已经过时，因为从Go 1.16开始，

ioutil

包已被弃用

---

警告 请注意，

github.com/dgrijalva/jwt go

已经很长时间没有维护，并且有严重的未修复错误。并且不支持Go模块，在版本4之前（这只是一个预览版）。我强烈建议选择不同的库来处理JWT。

正确的代码是：

func main() {
    token := jwt.New(jwt.SigningMethodRS256)
    pkey, err := jwt.ParseRSAPrivateKeyFromPEM([]byte(key))
    if err != nil {
        log.Println(err)
    }
    jwt, err := token.SignedString(pkey)
    if err != nil {
        log.Println(err)
    }
    fmt.Println("jwt=", jwt)
}

本文作者

我刚刚尝试在测试文件的末尾添加您的案例，因此我省略了一些导入，但是jwx似乎可以很好地解析您的密钥：

func TestSO66970208(t *testing.T) {
  var src = `-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`
  key, err := jwk.ParseString(src, jwk.WithPEM(true))
  if !assert.NoError(t, err, `jwk.ParseString should succeed`) {
    return
  }

  buf, _ := json.MarshalIndent(key, "", "  ")
  t.Logf("%s", buf)
}

这将产生：

lestrrat@finch jwk % go test -run TestSO66970208 -v
=== RUN   TestSO66970208
    jwk_test.go:1472: {
          "keys": [
            {
              "d": "R44GueGrttLco53ALeGEJDjja5uE4WhDwYMrxyXAmMpu9hpXdbr1xDORwRbOOXjpiUuKnPPKVrrUs8LKmrtOhvkH2XPCjCZRZP9yyvyjygPja9pQy0k9Akxfg6R9N2x-nJXkB-iRO4xV2vqppmEUQSgtsQq53iw5vOTTbc9SdsxMzLPbB5CyZUtP2Cbrgr0YfNq6gQNYamvcGjP6YQqj2uHJJ4rvepeokUUBOXQgHnQal0qid16t79eh8tDaSpQHZ8URYh5FdrAV3i7rITmfGOEi-f2moyFbjy88Bi3BNSFjw7GkLCT1T5rAFgy-QKcWWs7hPAI0WoTyPf-vpg3lUQ",
              "dp": "mjSoj4kniB8hBZ0WOi242zfg-_a80CH76F1TieWOysHUBtGEbze1OZxpb2WKgQ1MD9Y-e-6DQgr0eFXX6N9i51DuFFlVLLThy17zge5xOnHnQi3L0Mb24Kg2XooIG2hZmYU94xelQOnXMx0MpUTO8dl24e-n3kzxBZJ46cdIu2s",
              "dq": "c8-cos2s5YpNeirtO3klS2rCiPBWK-WiVj_DpNyUQ4ZstoeTchcyFcw7P3jCNPQooPTIAqZf12wgO84WfKVrp1s5mD38sZ4g2mKr1VDwG0I3qZj_S69iQRoix2vPGcTnyE5qsh9pnap_wW6biTtlPP_-lv6Wm_4kHyupk4isl8k",
              "e": "AQAB",
              "kty": "RSA",
              "n": "uMVb3lrWKlmGIzTaJqtVJi2rPIy7_BkRKlAZ7Q1u0VlyOhzIcXq6zAGsh31uWeJBJFKrZdwA6b2LD5vscnuilHi0nfQZA5l-meQT9LJ7STnfJ7f81CniBIhj5g6dOva9o_ljrLCmRSE4MjJRl3LkydvrHNokzicOAvieq4BYgHVJ2DC7r7cSWrHeIiBIEBb1zAghc1OxtkFkxumva2gmywq0zB0VfzsYrtSpWT77qSNA-UEHH-UCahefkun1uaBcOrEIPUh_j95N3rFTAdIAzFvDqLvLdQbmm_NT78O7izSGvJ1K4rM2fSiecALSROZqOeJy3pf2v6Caqlp2gdDHUQ",
              "p": "2c0GqQVfwbcgB-8pLmd8H7dq-HqHToTA00pgNAsl_LRFUhkIVyY1YUJkr7nJ3ogzqyjNBz0K4JeaMbMxJRwbxu4SUBgmvc-3h0oa9ibTKtBH4KWAqwCC3TLQFoMXJCf-YJOL8ZNeqQz4rEpCVvJj86p9F4iTRhl5bd7mYqiEjus",
              "q": "2S1U19iAIEiSETtUWEzj_iAKOUZJKl4Kz6PVfUMT1lqodOHsNHexzcQs-W_LW_Z9Jr7uJtdC0ZZl2UCQ8PBTirsA_gimisnmVhx3mvKXOOO_Cf8RpN1_faTnQJj_Tu-h3aV7n53Av2wSQPoWnnNB9W515gTYqwiV__CX44lGS7M",
              "qi": "Zvj0JP7OLVUJriOHQQfvyh1PBFv8-V4DDbkItVKPfkypAIQDb-NT3aA_yJMNTmYM0RpAy8xg3V8qIA-bqGIqn3_lDTbNBY1XM7LCBzQvjVhv0r9KrEbAhNp0XDDGEqAGrOAJ4im8osIauEzO3M-NQv2jgxJ01r3a9qNyKWvyV3o"
            }
          ]
        }
--- PASS: TestSO66970208 (0.00s)
PASS
ok      github.com/lestrrat-go/jwx/jwk  0.198s

---

现在我发现jwt.ParseRSAPublicKeyFromPEM（keyData）有一个问题，它不能使用我的公钥，但可以与包中的

sample\u key.pub

中的密钥完美结合。在我的例子中，它生成错误：

asn1:structure error:tags不匹配（16 vs{class:0 tag:2 length:257iscompound:false}{optional:false explicit:false application:false private:false defaultValue:tag:stringType:0 timeType:0 set:false省略empty:false}tbsCertificate@4

。“我的公钥有什么问题？”@Pavel不看细节很难说。您正在分析PEM文件吗？你确定这是公钥吗？你看到了吗？如果什么都不管用，也许你最好用细节来提出一个新问题