嗨，伙计们，我真的对这么多事情感到困惑。我只知道我必须在一天结束时生成一个令牌。我得到了一些RSA私钥；XYZ。。。。。。。。。。。。dsdsfm"；，(很明显，由于安全问题，我不能透露它(，从那里我必须生成一些令牌，这些令牌将作为我的API http请求授权的头部。
问题是JsonWebKey的这些与互联网相关的东西，所有这些都不在我的领域，但我仍然尝试学习它们，但不是很清楚。我试图在flutter中实现一些由某人用Java编写的代码(那个人只懂Java，不懂flutter(。
对于Flutter的实现，我在pub.dev中尝试了两个插件……但我没有得到正确的输出。
第一个是https://pub.dev/packages/jose>我在它的示例页面中尝试了类似的内容，如图所示：
import 'dart:convert';
import 'dart:io';
import 'package:crypto_keys/crypto_keys.dart';
import 'package:jose/jose.dart';
import 'package:x509/x509.dart';
String pkey="XXXXXXXXXXXXXsfds";
void keyGenerator() async {
//await example1();
await example2();
// await example3();
// await example4();
// await example5();
// await example6();
// await example7();
// await example8();
}
// decode and verify a JWS
void example1() async {
var encoded = pkey;
// create a JsonWebSignature from the encoded string
var jws = JsonWebSignature.fromCompactSerialization(encoded);
// extract the payload
var payload = jws.unverifiedPayload;
print('content of jws: ${payload.stringContent}');
print('protected parameters: ${payload.protectedHeader.toJson()}');
// create a JsonWebKey for verifying the signature
var jwk = JsonWebKey.fromJson({
'kty': 'RSA',
'alg': 'RS256',
});
var keyStore = JsonWebKeyStore()..addKey(jwk);
// verify the signature
var verified = await jws.verify(keyStore);
print('signature verified: $verified');
}
// create a JWS
void example2() async {
// create a builder
var builder = JsonWebSignatureBuilder();
// set the content
builder.stringContent = 'It is me';
// set some protected header
builder.setProtectedHeader('createdAt', DateTime.now().toIso8601String());
// add a key to sign, you can add multiple keys for different recipients
builder.addRecipient(
JsonWebKey.fromJson({
'kty': 'RSA',
'kid': pkey,
}),
algorithm: 'RS256');
// build the jws
var jws = builder.build();
// output the compact serialization
print('jws compact serialization: ${jws.toCompactSerialization()}');
// output the json serialization
print('jws json serialization: ${jws.toJson()}');
}
// decode and decrypt a JWE
void example3() async {
var encoded = 'eyJhbGciOiJSU0ExXzUiLCJlbmMiOiJBMTI4Q0JDLUhTMjU2In0.'
'UGhIOguC7IuEvf_NPVaXsGMoLOmwvc1GyqlIKOK1nN94nHPoltGRhWhw7Zx0-kFm'
'1NJn8LE9XShH59_i8J0PH5ZZyNfGy2xGdULU7sHNF6Gp2vPLgNZ__deLKxGHZ7Pc'
'HALUzoOegEI-8E66jX2E4zyJKx-YxzZIItRzC5hlRirb6Y5Cl_p-ko3YvkkysZIF'
'NPccxRU7qve1WYPxqbb2Yw8kZqa2rMWI5ng8OtvzlV7elprCbuPhcCdZ6XDP0_F8'
'rkXds2vE4X-ncOIM8hAYHHi29NX0mcKiRaD0-D-ljQTP-cFPgwCp6X-nZZd9OHBv'
'-B3oWh2TbqmScqXMR4gp_A.'
'AxY8DCtDaGlsbGljb3RoZQ.'
'KDlTtXchhZTGufMYmOYGS4HffxPSUrfmqCHXaI9wOGY.'
'9hH0vgRfYgPnAHOd8stkvw';
// create a JsonWebEncryption from the encoded string
var jwe = JsonWebEncryption.fromCompactSerialization(encoded);
// create a JsonWebKey for decrypting the signature
var jwk = JsonWebKey.fromJson(
{
'kty': 'RSA',
'n': 'sXchDaQebHnPiGvyDOAT4saGEUetSyo9MKLOoWFsueri23bOdgWp4Dy1Wl'
'UzewbgBHod5pcM9H95GQRV3JDXboIRROSBigeC5yjU1hGzHHyXss8UDpre'
'cbAYxknTcQkhslANGRUZmdTOQ5qTRsLAt6BTYuyvVRdhS8exSZEy_c4gs_'
'7svlJJQ4H9_NxsiIoLwAEk7-Q3UXERGYw_75IDrGA84-lA_-Ct4eTlXHBI'
'Y2EaV7t7LjJaynVJCpkv4LKjTTAumiGUIuQhrNhZLuF_RJLqHpM2kgWFLU'
'7-VTdL1VbC2tejvcI2BlMkEpk1BzBZI0KQB0GaDWFLN-aEAw3vRw',
'e': 'AQAB',
'd': 'VFCWOqXr8nvZNyaaJLXdnNPXZKRaWCjkU5Q2egQQpTBMwhprMzWzpR8Sxq'
'1OPThh_J6MUD8Z35wky9b8eEO0pwNS8xlh1lOFRRBoNqDIKVOku0aZb-ry'
'nq8cxjDTLZQ6Fz7jSjR1Klop-YKaUHc9GsEofQqYruPhzSA-QgajZGPbE_'
'0ZaVDJHfyd7UUBUKunFMScbflYAAOYJqVIVwaYR5zWEEceUjNnTNo_CVSj'
'-VvXLO5VZfCUAVLgW4dpf1SrtZjSt34YLsRarSb127reG_DUwg9Ch-Kyvj'
'T1SkHgUWRVGcyly7uvVGRSDwsXypdrNinPA4jlhoNdizK2zF2CWQ',
'p': '9gY2w6I6S6L0juEKsbeDAwpd9WMfgqFoeA9vEyEUuk4kLwBKcoe1x4HG68'
'ik918hdDSE9vDQSccA3xXHOAFOPJ8R9EeIAbTi1VwBYnbTp87X-xcPWlEP'
'krdoUKW60tgs1aNd_Nnc9LEVVPMS390zbFxt8TN_biaBgelNgbC95sM',
'q': 'uKlCKvKv_ZJMVcdIs5vVSU_6cPtYI1ljWytExV_skstvRSNi9r66jdd9-y'
'BhVfuG4shsp2j7rGnIio901RBeHo6TPKWVVykPu1iYhQXw1jIABfw-MVsN'
'-3bQ76WLdt2SDxsHs7q7zPyUyHXmps7ycZ5c72wGkUwNOjYelmkiNS0',
'dp': 'w0kZbV63cVRvVX6yk3C8cMxo2qCM4Y8nsq1lmMSYhG4EcL6FWbX5h9yuv'
'ngs4iLEFk6eALoUS4vIWEwcL4txw9LsWH_zKI-hwoReoP77cOdSL4AVcra'
'Hawlkpyd2TWjE5evgbhWtOxnZee3cXJBkAi64Ik6jZxbvk-RR3pEhnCs',
'dq': 'o_8V14SezckO6CNLKs_btPdFiO9_kC1DsuUTd2LAfIIVeMZ7jn1Gus_Ff'
'7B7IVx3p5KuBGOVF8L-qifLb6nQnLysgHDh132NDioZkhH7mI7hPG-PYE_'
'odApKdnqECHWw0J-F0JWnUd6D2B_1TvF9mXA2Qx-iGYn8OVV1Bsmp6qU',
'qi': 'eNho5yRBEBxhGBtQRww9QirZsB66TrfFReG_CcteI1aCneT0ELGhYlRlC'
'tUkTRclIfuEPmNsNDPbLoLqqCVznFbvdB7x-Tl-m0l_eFTj2KiqwGqE9PZ'
'B9nNTwMVvH3VRRSLWACvPnSiwP8N5Usy-WRXS-V7TbpxIhvepTfE0NNo'
},
);
var keyStore = JsonWebKeyStore()..addKey(jwk);
// decrypt the payload
var payload = await jwe.getPayload(keyStore);
print('decrypted content: ${payload.stringContent}');
}
// create a JWE
void example4() async {
// create a builder
var builder = JsonWebEncryptionBuilder();
// set the content
builder.stringContent = 'This is my bigest secret';
// set some protected header
builder.setProtectedHeader('createdAt', DateTime.now().toIso8601String());
// add a key to encrypt the Content Encryption Key
var jwk = JsonWebKey.fromJson(
{
'kty': 'RSA',
'n': 'sXchDaQebHnPiGvyDOAT4saGEUetSyo9MKLOoWFsueri23bOdgWp4Dy1Wl'
'UzewbgBHod5pcM9H95GQRV3JDXboIRROSBigeC5yjU1hGzHHyXss8UDpre'
'cbAYxknTcQkhslANGRUZmdTOQ5qTRsLAt6BTYuyvVRdhS8exSZEy_c4gs_'
'7svlJJQ4H9_NxsiIoLwAEk7-Q3UXERGYw_75IDrGA84-lA_-Ct4eTlXHBI'
'Y2EaV7t7LjJaynVJCpkv4LKjTTAumiGUIuQhrNhZLuF_RJLqHpM2kgWFLU'
'7-VTdL1VbC2tejvcI2BlMkEpk1BzBZI0KQB0GaDWFLN-aEAw3vRw',
'e': 'AQAB',
'd': 'VFCWOqXr8nvZNyaaJLXdnNPXZKRaWCjkU5Q2egQQpTBMwhprMzWzpR8Sxq'
'1OPThh_J6MUD8Z35wky9b8eEO0pwNS8xlh1lOFRRBoNqDIKVOku0aZb-ry'
'nq8cxjDTLZQ6Fz7jSjR1Klop-YKaUHc9GsEofQqYruPhzSA-QgajZGPbE_'
'0ZaVDJHfyd7UUBUKunFMScbflYAAOYJqVIVwaYR5zWEEceUjNnTNo_CVSj'
'-VvXLO5VZfCUAVLgW4dpf1SrtZjSt34YLsRarSb127reG_DUwg9Ch-Kyvj'
'T1SkHgUWRVGcyly7uvVGRSDwsXypdrNinPA4jlhoNdizK2zF2CWQ',
'p': '9gY2w6I6S6L0juEKsbeDAwpd9WMfgqFoeA9vEyEUuk4kLwBKcoe1x4HG68'
'ik918hdDSE9vDQSccA3xXHOAFOPJ8R9EeIAbTi1VwBYnbTp87X-xcPWlEP'
'krdoUKW60tgs1aNd_Nnc9LEVVPMS390zbFxt8TN_biaBgelNgbC95sM',
'q': 'uKlCKvKv_ZJMVcdIs5vVSU_6cPtYI1ljWytExV_skstvRSNi9r66jdd9-y'
'BhVfuG4shsp2j7rGnIio901RBeHo6TPKWVVykPu1iYhQXw1jIABfw-MVsN'
'-3bQ76WLdt2SDxsHs7q7zPyUyHXmps7ycZ5c72wGkUwNOjYelmkiNS0',
'dp': 'w0kZbV63cVRvVX6yk3C8cMxo2qCM4Y8nsq1lmMSYhG4EcL6FWbX5h9yuv'
'ngs4iLEFk6eALoUS4vIWEwcL4txw9LsWH_zKI-hwoReoP77cOdSL4AVcra'
'Hawlkpyd2TWjE5evgbhWtOxnZee3cXJBkAi64Ik6jZxbvk-RR3pEhnCs',
'dq': 'o_8V14SezckO6CNLKs_btPdFiO9_kC1DsuUTd2LAfIIVeMZ7jn1Gus_Ff'
'7B7IVx3p5KuBGOVF8L-qifLb6nQnLysgHDh132NDioZkhH7mI7hPG-PYE_'
'odApKdnqECHWw0J-F0JWnUd6D2B_1TvF9mXA2Qx-iGYn8OVV1Bsmp6qU',
'qi': 'eNho5yRBEBxhGBtQRww9QirZsB66TrfFReG_CcteI1aCneT0ELGhYlRlC'
'tUkTRclIfuEPmNsNDPbLoLqqCVznFbvdB7x-Tl-m0l_eFTj2KiqwGqE9PZ'
'B9nNTwMVvH3VRRSLWACvPnSiwP8N5Usy-WRXS-V7TbpxIhvepTfE0NNo'
},
);
builder.addRecipient(jwk, algorithm: 'RSA1_5');
// set the content encryption algorithm to use
builder.encryptionAlgorithm = 'A128CBC-HS256';
// build the jws
var jwe = builder.build();
// output the compact serialization
print('jwe compact serialization: ${jwe.toCompactSerialization()}');
// output the json serialization
print('jwe json serialization: ${jwe.toJson()}');
}
// decode and verify and validate a JWT
void example5() async {
var encoded = 'eyJ0eXAiOiJKV1QiLA0KICJhbGciOiJIUzI1NiJ9.'
'eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFt'
'cGxlLmNvbS9pc19yb290Ijp0cnVlfQ.'
'dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk';
// decode the jwt, note: this constructor can only be used for JWT inside JWS
// structures
var jwt = JsonWebToken.unverified(encoded);
// output the claims
print('claims: ${jwt.claims}');
// create key store to verify the signature
var keyStore = JsonWebKeyStore()
..addKey(JsonWebKey.fromJson({
'kty': 'oct',
'k':
'AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow'
}));
var verified = await jwt.verify(keyStore);
print('verified: $verified');
// alternatively, create and verify the JsonWebToken together, this is also
// applicable for JWT inside JWE
jwt = await JsonWebToken.decodeAndVerify(encoded, keyStore);
// validate the claims
var violations = jwt.claims.validate(issuer: Uri.parse('alice'));
print('violations: $violations');
}
// create a JWT
void example6() async {
var claims = JsonWebTokenClaims.fromJson({
'exp': Duration(hours: 4).inSeconds,
'aud':"live-tv",
'iat':DateTime.now().toString(),
});
// create a builder, decoding the JWT in a JWS, so using a
// JsonWebSignatureBuilder
var builder = JsonWebSignatureBuilder();
// set the content
builder.jsonContent = claims.toJson();
// add a key to sign, can only add one for JWT
builder.addRecipient(
JsonWebKey.fromJson({
'kty': 'RSA',
'kid':pkey,
}),
algorithm: 'HS256');
// build the jws
var jws = builder.build();
// output the compact serialization
print('jwt compact serialization: ${jws.toCompactSerialization()}');
}
// create a JWT, sign with RS512
void example7() async {
var claims = JsonWebTokenClaims.fromJson({
'exp': Duration(hours: 4).inSeconds,
'iss': 'alice',
});
// create a builder, decoding the JWT in a JWS, so using a
// JsonWebSignatureBuilder
var builder = JsonWebSignatureBuilder();
// set the content
builder.jsonContent = claims.toJson();
// add a key to sign, can only add one for JWT
var key = JsonWebKey.fromPem(File('example/jwtRS512.key').readAsStringSync());
builder.addRecipient(key, algorithm: 'RS512');
// build the jws
var jws = builder.build();
// output the compact serialization
print('jwt compact serialization: ${jws.toCompactSerialization()}');
}
// generate a key for use with ES256 signing
void example8() async {
var alg = JsonWebAlgorithm.getByName('ES256');
var key = alg.generateRandomKey();
print(JsonEncoder.withIndent(' ').convert(key));
final hash = utf8.encode('TEST');
var sig = key.sign(hash);
final valid = key.verify(hash, sig);
print('valid? $valid');
}
我一次尝试每一个例子，修改每一个。他们中很少有人说"；紧凑串行化应具有3个部分"；，然后我做了一些研究，意识到要生成的令牌应该有三个部分。示例2中的另一个错误是无法对JSONWebKey进行签名。
我用过另一个图书馆https://pub.dev/packages/corsac_jwt.
代码如下：
import 'package:corsac_jwt/corsac_jwt.dart';
// ..setClaim('13', {'userId': 'xxxx'})
String pkey="sdfdsfdsfds";
void tokenGenerator() {
var builder = new JWTBuilder();
var token = builder
..audience="live-tv"
..issuedAt= new DateTime.now()
..expiresAt = new DateTime.now().add(new Duration(minutes: 3))
..getToken(); // returns token without signature
var signer = new JWTRsaSha256Signer(privateKey: pkey);
var signedToken = builder.getSignedToken(signer);
print("token");
print(signedToken); // prints encoded JWT
var stringToken = signedToken.toString();
var decodedToken = new JWT.parse(stringToken);
// Verify signature:
print(decodedToken.verify(signer)); // true
// Validate claims:
// var validator = new JWTValidator() ;// uses DateTime.now() by default
// // set claims you wish to validate
// Set<String> errors = validator.validate(decodedToken);
// print(errors); // (empty list)
}
但这里我得到了错误无效的私钥。如果我将其更改为公钥，我也会得到无效的公钥。
老实说，我的精神状态很混乱，时间不多了。我的队友们只知道一件事，我只知道扑腾。
顺便说一下，下面给出了我们试图在flutter中实现的Java代码。基本上，它所做的是获取StringKey，转换为PrivateKey，然后使用令牌
import android.util.Log;
import java.security.GeneralSecurityException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Date;
import java.util.concurrent.TimeUnit;
public class RSAKeyGenerator {
private static PrivateKey getPrivateKey() throws GeneralSecurityException {
String pKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
KeyFactory kf = KeyFactory.getInstance("RSA");
byte[] decode;
decode = android.util.Base64.decode(pKey, android.util.Base64.DEFAULT);
PKCS8EncodedKeySpec keySpecPKCS8 = new PKCS8EncodedKeySpec(decode);
return kf.generatePrivate(keySpecPKCS8);
}
public static String getJwtToken() {
final long VALIDITY_MS = TimeUnit.MINUTES.toMillis(60);
long nowMillis = System.currentTimeMillis();
Date now = new Date(nowMillis);
Date exp = new Date(nowMillis + VALIDITY_MS);
PrivateKey privateKey = null;
try {
privateKey = getPrivateKey();
} catch (GeneralSecurityException e) {
e.printStackTrace();
}
String jws = Jwts.builder()
.claim("version", "13")
.claim("user_id", "xxxxxxxxxxxxxxxxxxx")
.setIssuedAt(now)
.setExpiration(exp)
.signWith(privateKey, SignatureAlgorithm.RS256)
.setAudience("live-tv")
.compact();
Log.d("111__", jws);
SpUtil.Companion.getInstance().putString(J_TOKEN, jws);
return jws;
}
}
经过数小时的研究、反复试验和咨询我的团队成员，我得出了最终结论。这是有效的。我所犯的错误是我将RSA密钥作为类似字符串的密钥="来传递；xxxxxxxxxxxx"；，但它应该是以下的格式
希望这能帮助
import 'package:dart_jsonwebtoken/dart_jsonwebtoken.dart';
String token;
String dartJsonWebTokenGenerator() {
Duration delay = new Duration(minutes: 300);
final jwt = JWT(
payload: {
'version': '13',
'user_id': 'xxxxxxxxxxxxxxxxx',
},
audience: 'live-tv',
);
// Sign it (default with HS256 algorithm)
token = jwt.sign(PrivateKey('''-----BEGIN RSA PRIVATE KEY-----
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx7
wIxAoKDcHD7mv2R//I0QncGzT1I7cccrhIUB1gXH9wWdTXrafhACXrJ2Drfjg/YN
9q4TiKH1k2+zTfdU1IDxd6OX2cPNkwn/vpZeZ1pZqVoimRRJbJg8RhXYvZgd6Nfj
Zdw6LY3Zzm3XbLbTUmbVM5ARDweksnr6cg7HmR2OQ5j5UFuhRyIUTSCDbAmDeyHS
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx70YmgZPR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F2UQrBMRf21aqvvdwJSWiFsCuJ2VJTE/N2iS9A6ISdvYWO+ZJPPqffRmpt6T3tIB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-----END RSA PRIVATE KEY-----'''),
algorithm: JWTAlgorithm.RS256, expiresIn: delay);
print('Signed token: $tokenn');
return token;
}