[英]Why is verification failing for a JWS signature?
我正在嘗試使用 Java 中的 Nimbus JOSE JWT 庫使用分離的有效負載對消息進行簽名。驗證在本地進行,但每當我嘗試使用 Postman 將其發送到服務器時,我得到: "The signature header x-jws-signature was parsed and has a valid JOSE header that complies with the specification. However, the signature itself could not be verified"
JWSSigner signer = new RSASSASigner(privateKey);
HashMap<String, Object> criticalParameters = new HashMap<>();
criticalParameters.put("http://openbanking.org.uk/iat", 1501497671);
criticalParameters.put("http://openbanking.org.uk/iss", orgId);
criticalParameters.put("http://openbanking.org.uk/tan", "openbankingtest.org.uk");
JWSHeader header = new JWSHeader.Builder(JWSAlgorithm.PS256)
.type(JOSEObjectType.JOSE)
.keyID(keyID)
.criticalParams(criticalParameters.keySet())
.customParams(criticalParameters)
.build();
// With encoding the payload
JWSObject jwsObject = new JWSObject(header, payload);
jwsObject.sign(signer);
String jws = jwsObject.serialize(true);
JWSObject parsedJWSObject = JWSObject.parse(jws, payload);
if (parsedJWSObject.verify(new RSASSAVerifier(publicKey, criticalParameters.keySet()))) {
System.out.println(parsedJWSObject.serialize(true));
} else {
System.out.println("Invalid");
}
//=============================
// Without encoding the payload
Base64URL signature = signer.sign(header, (header.toBase64URL().toString() + "." + payload).getBytes());
JWSVerifier verifier = new RSASSAVerifier(publicKey, criticalParameters.keySet());
boolean isValid = verifier.verify(header, (header.toBase64URL().toString() + "." + payload).getBytes(), signature);
System.out.println(header.toBase64URL().toString() + ".." + signature.toString());
System.out.println(isValid);
//=============================
這兩個函數都成功地簽署並驗證了 JWS,但由於某種原因,它不起作用。 如果有幫助,我正在嘗試訪問 Open Banking API。
最近遇到了類似的問題。 我建議您檢查以下內容:
我知道期望有效負載中的 json 屬性按特定順序排列是非常值得懷疑的,但根據經驗,我發現一些開放式銀行實現采用特定順序(甚至不是字母順序),當訂單不是他們期望的。
JWSHeader header = new JWSHeader.Builder(JWSAlgorithm.PS256)
.type(JOSEObjectType.JOSE)
.keyID(keyID)
.criticalParams(criticalParameters.keySet())
.customParams(criticalParameters)
.build();
//simplyfy your payload json string before..remove all spaces.
Gson gson = new GsonBuilder().disableHtmlEscaping().create();
JsonElement el = JsonParser.parseString(payload);
String simplePayload=gson.toJson(el);
// With encoding the payload
Payload detachedPayload =new Payload(new Base64URL(simplePayload).toString());
JWSObject jwsObject = new JWSObject(header, detachedPayload );
jwsObject.sign(signer);
String jws = jwsObject.serialize(true);
JWSObject parsedJWSObject = JWSObject.parse(jws, detachedPayload );
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