Package com.nimbusds.jose

Examples of com.nimbusds.jose.JOSEException

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      return decrypt(encryptedJWT);
     
    } else {
   
      throw new JOSEException("Unexpected JWT type: " + jwt.getClass());
    }
  }
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      encryptedKey = Base64URL.encode(RSA_OAEP_256.encryptCEK(publicKey, cek, keyEncryptionProvider));
     
    } else {

      throw new JOSEException("Unsupported JWE algorithm, must be RSA1_5, RSA-OAEP, or RSA-OAEP-256");
    }


    // Apply compression if instructed
    byte[] plainText = DeflateHelper.applyCompression(header, bytes);

    // Compose the AAD
    byte[] aad = StringUtils.toByteArray(header.toBase64URL().toString());

    // Encrypt the plain text according to the JWE enc
    byte[] iv;
    AuthenticatedCipherText authCipherText;
   
    if (enc.equals(EncryptionMethod.A128CBC_HS256) ||
        enc.equals(EncryptionMethod.A192CBC_HS384) ||
        enc.equals(EncryptionMethod.A256CBC_HS512)    ) {

      iv = AESCBC.generateIV(randomGen);

      authCipherText = AESCBC.encryptAuthenticated(
        cek, iv, plainText, aad,
        contentEncryptionProvider, macProvider);

    } else if (enc.equals(EncryptionMethod.A128GCM) ||
         enc.equals(EncryptionMethod.A192GCM) ||
         enc.equals(EncryptionMethod.A256GCM)    ) {

      iv = AESGCM.generateIV(randomGen);

      authCipherText = AESGCM.encrypt(
        cek, iv, plainText, aad,
        contentEncryptionProvider);

    } else if (enc.equals(EncryptionMethod.A128CBC_HS256_DEPRECATED) ||
         enc.equals(EncryptionMethod.A256CBC_HS512_DEPRECATED)    ) {

      iv = AESCBC.generateIV(randomGen);

      authCipherText = AESCBC.encryptWithConcatKDF(
        header, cek, encryptedKey, iv, plainText,
        contentEncryptionProvider, macProvider);

    } else {

      throw new JOSEException("Unsupported encryption method, must be A128CBC_HS256, A192CBC_HS384, A256CBC_HS512, A128GCM, A192GCM or A256GCM");
    }

    return new JWECryptoParts(encryptedKey, 
                        Base64URL.encode(iv),
                        Base64URL.encode(authCipherText.getCipherText()),
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      // Append "Encryption" label
      baos.write(ENCRYPTION_BYTES);

    } catch (IOException e) {

      throw new JOSEException(e.getMessage(), e);
    }

    // Write out
    byte[] hashInput = baos.toByteArray();

    MessageDigest md;

    try {
      // SHA-256 or SHA-512
      md = MessageDigest.getInstance("SHA-" + hashBitLength);

    } catch (NoSuchAlgorithmException e) {

      throw new JOSEException(e.getMessage(), e);
    }

    byte[] hashOutput = md.digest(hashInput);

    byte[] cekBytes = new byte[hashOutput.length / 2];
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      // Append "Encryption" label
      baos.write(INTEGRITY_BYTES);

    } catch (IOException e) {

      throw new JOSEException(e.getMessage(), e);
    }

    // Write out
    byte[] hashInput = baos.toByteArray();

    MessageDigest md;

    try {
      // SHA-256 or SHA-512
      md = MessageDigest.getInstance("SHA-" + hashBitLength);

    } catch (NoSuchAlgorithmException e) {

      throw new JOSEException(e.getMessage(), e);
    }

    // HMACSHA256 or HMACSHA512
    return new SecretKeySpec(md.digest(hashInput), "HMACSHA" + cikBitLength);
  }
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    JWEAlgorithm alg = readOnlyJWEHeader.getAlgorithm();

    if (! alg.equals(JWEAlgorithm.DIR)) {

      throw new JOSEException("Unsupported JWE algorithm, must be \"dir\"");
    }

    // Check key length matches matches encryption method
    EncryptionMethod enc = readOnlyJWEHeader.getEncryptionMethod();

    if (enc.cekBitLength() != getKey().getEncoded().length * 8) {

      throw new JOSEException("The Content Encryption Key (CEK) length must be " + enc.cekBitLength() + " bits for " + enc + " encryption");
    }

    final Base64URL encryptedKey = null; // The second JWE part


    // Apply compression if instructed
    byte[] plainText = DeflateHelper.applyCompression(readOnlyJWEHeader, bytes);


    // Compose the AAD
    byte[] aad = StringUtils.toByteArray(readOnlyJWEHeader.toBase64URL().toString());
   

    // Encrypt the plain text according to the JWE enc
    byte[] iv;
    AuthenticatedCipherText authCipherText;
    SecureRandom randomGen = getSecureRandom();

    if (enc.equals(EncryptionMethod.A128CBC_HS256) || enc.equals(EncryptionMethod.A192CBC_HS384) || enc.equals(EncryptionMethod.A256CBC_HS512)) {

      iv = AESCBC.generateIV(randomGen);

      authCipherText = AESCBC.encryptAuthenticated(getKey(), iv, plainText, aad, contentEncryptionProvider, macProvider);

    } else if (enc.equals(EncryptionMethod.A128GCM) || enc.equals(EncryptionMethod.A192GCM) || enc.equals(EncryptionMethod.A256GCM)) {

      iv = AESGCM.generateIV(randomGen);

      authCipherText = AESGCM.encrypt(getKey(), iv, plainText, aad, contentEncryptionProvider);

    } else {

      throw new JOSEException("Unsupported encryption method, must be A128CBC_HS256, A192CBC_HS384, A256CBC_HS512, A128GCM, A192GCM or A128GCM");
    }

    return new JWECryptoParts(encryptedKey, 
                        Base64URL.encode(iv),
                        Base64URL.encode(authCipherText.getCipherText()),
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    try {
      outputOffset += gcm.doFinal(output, outputOffset);

    } catch (InvalidCipherTextException e) {

      throw new JOSEException("Couldn't generate GCM authentication tag for key: " + e.getMessage(), e);
    }

    // Split output into cipher text and authentication tag
    int authTagLength = AUTH_TAG_BIT_LENGTH / 8;
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    try {
      keyBytesOffset += gcm.doFinal(keyBytes, keyBytesOffset);

    } catch (InvalidCipherTextException e) {

      throw new JOSEException("Couldn't validate GCM authentication tag: " + e.getMessage(), e);
    }

    if (8 * keyBytes.length != keyLength) {

      throw new JOSEException("CEK key length mismatch: " +
        keyBytes.length + " != " + keyLength);
    }

    return new SecretKeySpec(keyBytes, "AES");

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        cipher.init(Cipher.DECRYPT_MODE, keyspec, ivSpec);
      }

    } catch (Exception e) {

      throw new JOSEException(e.getMessage(), e);
    }

    return cipher;
  }
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    try {
      return cipher.doFinal(plainText); 
   
    } catch (Exception e) {

      throw new JOSEException(e.getMessage(), e);
    }
  }
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    try {
      return cipher.doFinal(cipherText);

    } catch (Exception e) {

      throw new JOSEException(e.getMessage(), e);
    }
  }
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Related Classes of com.nimbusds.jose.JOSEException

  • com.nimbusds.jose.crypto.AES
  • com.nimbusds.jose.crypto.AESCBC
  • com.nimbusds.jose.crypto.AESDecrypter
  • com.nimbusds.jose.crypto.AESEncrypter
  • com.nimbusds.jose.crypto.AESGCM
  • com.nimbusds.jose.crypto.AESGCMKW
  • com.nimbusds.jose.crypto.AESKW
  • com.nimbusds.jose.crypto.CompositeKey
  • com.nimbusds.jose.crypto.ConcatKDF
  • com.nimbusds.jose.crypto.DeflateHelper
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