ios - Objective-C:JWT - 使用私钥的字符串数据使用 RS256 编码

Question

我正在使用这个库来编码一个 RS256 token https://github.com/yourkarma/JWT

在文档中有一个处理RS256编码的例子

NSDictionary *payload = @{@"payload" : @"hidden_information"};
NSString *algorithmName = @"RS256";

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"secret_key" ofType:@"p12"];
NSData *privateKeySecretData = [NSData dataWithContentsOfFile:filePath];

NSString *passphraseForPrivateKey = @"secret";

JWTBuilder *builder = [JWTBuilder encodePayload:payload].secretData(privateKeySecretData).privateKeyCertificatePassphrase(passphraseForPrivateKey).algorithmName(algorithmName);
NSString *token = builder.encode;

现在，因为我只有一串类似这样的私钥:

"-----BEGIN RSA PRIVATE KEY-----\nMIIEpAIBAAKCAQEAtN7LQq7l9a9....SUug==\n-----END RSA PRIVATE KEY-----\n"

我想知道如何实现它？显然我不需要密码。

提前致谢

Answer 1

在同事的帮助下，事实证明这并不难 ;-)

解决方法如下:

NSDictionary *payload = @{@"payload" : @"hidden_information"};

id <JWTAlgorithmDataHolderProtocol> holder = [JWTAlgorithmRSFamilyDataHolder new]
    .keyExtractorType([JWTCryptoKeyExtractor privateKeyWithPEMBase64].type)
    .privateKeyCertificatePassphrase(nil)
    .algorithmName(JWTAlgorithmNameRS256)
    .secret(<string of the private key as above>);

JWTCodingResultType *result = [JWTEncodingBuilder encodePayload:payload]
    .addHolder(holder)
    .result;

NSString *token = result.successResult.encoded;
NSError *error = result.errorResult.error;