問(wèn)題描述
我在嘗試使用 SAML 2.0 解密加密斷言時(shí)遇到問(wèn)題.我使用的庫(kù)是 OpenSAML Java 庫(kù) 2.5.2.
I have a problem while trying to decrypt encrypted assertion using SAML 2.0. The library I am using is OpenSAML Java libraries 2.5.2.
加密的斷言如下所示:
<EncryptedAssertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion">
<enc:EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Element"
xmlns:enc="http://www.w3.org/2001/04/xmlenc#">
<enc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#aes256-cbc" />
<KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#">
<e:EncryptedKey xmlns:e="http://www.w3.org/2001/04/xmlenc#">
<e:EncryptionMethod
Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p">
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
</e:EncryptionMethod>
<KeyInfo>
<o:SecurityTokenReference
xmlns:o="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-
1.0.xsd">
<o:KeyIdentifier
ValueType="http://docs.oasis-open.org/wss/oasis-wss-soap-message-security-
1.1#ThumbprintSHA1"
EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-
message-security-1.0#Base64Binary">
1H3mV/pJAlVZAst/Dt0rqbBd67g=
</o:KeyIdentifier>
</o:SecurityTokenReference>
</KeyInfo>
<e:CipherData>
<e:CipherValue>
... ENCRYPTED KEY HERE ...
</e:CipherValue>
</e:CipherData>
</e:EncryptedKey>
</KeyInfo>
<enc:CipherData>
<enc:CipherValue>
... ENCRYPTED ASSERTIONS HERE ...
</enc:CipherValue>
</enc:CipherData>
</enc:EncryptedData>
</EncryptedAssertion>
我確實(shí)使用以下 openssl 命令將 PEM 格式的私鑰轉(zhuǎn)換為 pkcs8 格式:
I did convert my private key that is in PEM format to pkcs8 format using the following openssl command:
openssl pkcs8 -topk8 -nocrypt -inform PEM -in rsa_private_key.key -outform DER -out rsa_private_key.pk8
然后我準(zhǔn)備嘗試解密加密的斷言.這是我的 Java 代碼:
I am then ready to try to decrypt the encrypted assertion. Here is my Java code:
...
// Load the XML file and parse it.
File xmlFile = new File("data\token.xml");
InputStream inputStream = new FileInputStream(xmlFile);
Document document = parserPoolManager.parse(inputStream);
Element metadataRoot = document.getDocumentElement();
// Unmarshall
UnmarshallerFactory unmarshallerFactory = Configuration.getUnmarshallerFactory();
Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(metadataRoot);
EncryptedAssertion encryptedAssertion = (EncryptedAssertion)unmarshaller.unmarshall(metadataRoot);
// Load the private key file.
File privateKeyFile = new File("data\rsa_private_key.pk8");
FileInputStream inputStreamPrivateKey = new FileInputStream(privateKeyFile);
byte[] encodedPrivateKey = new byte[(int)privateKeyFile.length()];
inputStreamPrivateKey.read(encodedPrivateKey);
inputStreamPrivateKey.close();
// Create the private key.
PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedPrivateKey);
RSAPrivateKey privateKey = (RSAPrivateKey)KeyFactory.getInstance("RSA").generatePrivate(privateKeySpec);
// Create the credentials.
BasicX509Credential decryptionCredential = new BasicX509Credential();
decryptionCredential.setPrivateKey(privateKey);
// Create a decrypter.
Decrypter decrypter = new Decrypter(null, new StaticKeyInfoCredentialResolver(decryptionCredential), new InlineEncryptedKeyResolver());
// Decrypt the assertion.
Assertion decryptedAssertion;
try
{
decryptedAssertion = decrypter.decrypt(encryptedAssertion);
}
...
運(yùn)行此代碼始終導(dǎo)致無(wú)法解密斷言.我確實(shí)收到以下錯(cuò)誤:
Running this code always results as being unable to decrypt the assertion. I do get the following errors:
5473 [main] ERROR org.opensaml.xml.encryption.Decrypter - Error decrypting encrypted key
org.apache.xml.security.encryption.XMLEncryptionException: Key is too long for unwrapping
Original Exception was java.security.InvalidKeyException: Key is too long for unwrapping
at org.apache.xml.security.encryption.XMLCipher.decryptKey(Unknown Source)
at org.opensaml.xml.encryption.Decrypter.decryptKey(Decrypter.java:681)
at org.opensaml.xml.encryption.Decrypter.decryptKey(Decrypter.java:612)
at org.opensaml.xml.encryption.Decrypter.decryptUsingResolvedEncryptedKey(Decrypter.java:762)
at org.opensaml.xml.encryption.Decrypter.decryptDataToDOM(Decrypter.java:513)
at org.opensaml.xml.encryption.Decrypter.decryptDataToList(Decrypter.java:440)
at org.opensaml.xml.encryption.Decrypter.decryptData(Decrypter.java:401)
at org.opensaml.saml2.encryption.Decrypter.decryptData(Decrypter.java:141)
at org.opensaml.saml2.encryption.Decrypter.decrypt(Decrypter.java:69)
at DecrypterTool.main(DecrypterTool.java:121)
java.security.InvalidKeyException: Key is too long for unwrapping
at com.sun.crypto.provider.RSACipher.engineUnwrap(DashoA13*..)
at javax.crypto.Cipher.unwrap(DashoA13*..)
at org.apache.xml.security.encryption.XMLCipher.decryptKey(Unknown Source)
at org.opensaml.xml.encryption.Decrypter.decryptKey(Decrypter.java:681)
at org.opensaml.xml.encryption.Decrypter.decryptKey(Decrypter.java:612)
at org.opensaml.xml.encryption.Decrypter.decryptUsingResolvedEncryptedKey(Decrypter.java:762)
at org.opensaml.xml.encryption.Decrypter.decryptDataToDOM(Decrypter.java:513)
at org.opensaml.xml.encryption.Decrypter.decryptDataToList(Decrypter.java:440)
at org.opensaml.xml.encryption.Decrypter.decryptData(Decrypter.java:401)
at org.opensaml.saml2.encryption.Decrypter.decryptData(Decrypter.java:141)
at org.opensaml.saml2.encryption.Decrypter.decrypt(Decrypter.java:69)
at DecrypterTool.main(DecrypterTool.java:121)
5477 [main] ERROR org.opensaml.xml.encryption.Decrypter - Failed to decrypt EncryptedKey, valid decryption key could not be resolved
5477 [main] ERROR org.opensaml.xml.encryption.Decrypter - Failed to decrypt EncryptedData using either EncryptedData KeyInfoCredentialResolver or EncryptedKeyResolver + EncryptedKey KeyInfoCredentialResolver
5478 [main] ERROR org.opensaml.saml2.encryption.Decrypter - SAML Decrypter encountered an error decrypting element content
org.opensaml.xml.encryption.DecryptionException: Failed to decrypt EncryptedData
at org.opensaml.xml.encryption.Decrypter.decryptDataToDOM(Decrypter.java:524)
at org.opensaml.xml.encryption.Decrypter.decryptDataToList(Decrypter.java:440)
at org.opensaml.xml.encryption.Decrypter.decryptData(Decrypter.java:401)
at org.opensaml.saml2.encryption.Decrypter.decryptData(Decrypter.java:141)
at org.opensaml.saml2.encryption.Decrypter.decrypt(Decrypter.java:69)
at DecrypterTool.main(DecrypterTool.java:121)
我真的不知道在這種情況下我做錯(cuò)了什么.我將我的私鑰轉(zhuǎn)換為 pkcs8，我加載了我的 SAML XML 數(shù)據(jù)并將其解組為有效類型 (EncryptedAssertion)，然后我根據(jù)我的私鑰創(chuàng)建了一個(gè)解密.
I really don't know what I'm doing wrong in this case. I converted my private key to pkcs8, I loaded my SAML XML data and unmarshalled it into the valid type (EncryptedAssertion) and I created a decrypted based on my private key.
是否可能與 RSA 的 oaep 格式有關(guān)?我正在使用默認(rèn)的 java 加密庫(kù).
Is it possible that it is related to the oaep format for RSA? I'm using the default java cryptography library.
謝謝！
推薦答案
對(duì)于遇到此問(wèn)題的人來(lái)說(shuō)，這與未安裝 Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 和它并沒有讓我使用比 AES-128 更好的加密.用 JCE 策略文件替換策略文件，我能夠成功解密我的加密斷言.
For those of you who will get this problem, it was related to the fact that the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files was not installed and it was not letting me use encryption better than AES-128. Replacing the policy files with the JCE policy files, I was able to successfully decrypt my encrypted assertion.
這篇關(guān)于使用 OpenSAML 在 Java 中使用 SAML 2.0 解密加密斷言的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！