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我想用JSON Web簽名(JWS)做一個項目,並且我想發送用於簽名的證書的公鑰,以便一旦收到消息就可以驗證消息用這個公鑰。我正在使用Ninbus JOS JWT庫。我可以簽署JSON對象,我可以看到公鑰,但我無法正確驗證它。 這是代碼:JSON Web簽名(Ninbus-JOSE-JWT)
// Create RSA-signer with the private key
JWSSigner signer = new RSASSASigner(_signatureKey_); // PrivateKey
com.nimbusds.jose.util.Base64 b64 = new com.nimbusds.jose.util.Base64(_x509certificate.toString()); // X509Certificate
ArrayList<com.nimbusds.jose.util.Base64> certificados = new ArrayList<com.nimbusds.jose.util.Base64>();
certificados.add(b64);
RSAPublicKey _rsaPublicKey = (RSAPublicKey)_x509certificate.getPublicKey(); // Get the public key of the X509Certificate
RSAKey jwk = new com.nimbusds.jose.jwk.RSAKey.Builder(new Base64URL(_rsaPublicKey.getModulus().toString()), new Base64URL(_rsaPublicKey.getPublicExponent().toString()))
.x509CertChain(certificados)
.build();
JWSHeader _jwsHeader = new JWSHeader.Builder(JWSAlgorithm.RS256).
x509CertChain(certificados).
jwk(jwk).
build();
// Prepare JWS object with simple string as payload
JWSObject jwsObject = new JWSObject(_jwsHeader, new Payload(_jsonObject));
// Compute the RSA signature
jwsObject.sign(signer);
// Validation OK : This validation works
JWSVerifier verifier = new RSASSAVerifier(_rsaPublicKey);
boolean signatureValid = jwsObject.verify(verifier); // ---> True, OK
// Now I want to validate the JWSObject getting the public key from the same JWSObject. This validation Fails
JWK _jwk = jwsObject.getHeader().getJWK();
RSAKey _rsakey = (RSAKey)_jwk;
RSAPublicKey _rsaPublicKey2 = _rsakey.toRSAPublicKey();
JWSVerifier verifier2 = new RSASSAVerifier(_rsakey.toRSAPublicKey());
boolean verificado2 = jwsObject.verify(verifier2); // False!
// Another option, this fails too
RSAKey __rsaKey2 = new com.nimbusds.jose.jwk.RSAKey.Builder(_rsakey.toRSAPublicKey()).x509CertChain(_jwk.getX509CertChain()).build();
JWSVerifier verifier3 = new RSASSAVerifier(__rsaKey2);
boolean verificado3 = jwsObject.verify(verifier3); // False!
的_rsaPublicKey是:「孫RSA公共密鑰,2048位」,但是當我從JWK(_rsaPublicKey2)得到它,我得到「孫RSA公共密鑰,3696位」我不知道爲什麼。
謝謝!
謝謝,我認爲問題在於從RSAKey到RSAPublicKey的轉換。從RSAKey到RSAPublicKey(帶有_rsakey.toRSAPublicKey()),我得到了不同的模數和指數。 – jandres
JWK _jwk = jwsObject.getHeader()。getJWK(); 'RSAKey _rsakey =(RSAKey)_jwk;' //// - >模數和指數ok 'RSAPublicKey _rsaPublicKey2 = _rsakey.toRSAPublicKey();' /// - > – jandres
我認爲我的問題可以概括:一旦我有了JWSObject對象,並且我可以訪問它的頭文件和x509CertChain(它是一個com.nimbusds.jose.util.Base64對象列表),那麼怎麼能我得到了X509CertChain的公鑰?我可以看到它的調試,但我無法正確驗證簽名。 – jandres