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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,22 +1,30 @@ | ||
| package nl.ictu.controller.v1; | ||
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| import lombok.RequiredArgsConstructor; | ||
| import lombok.SneakyThrows; | ||
| import nl.ictu.psuedoniemenservice.generated.server.api.GetTokenApi; | ||
| import nl.ictu.psuedoniemenservice.generated.server.model.WsGetToken200Response; | ||
| import nl.ictu.psuedoniemenservice.generated.server.model.WsGetTokenRequest; | ||
| import nl.ictu.service.Cryptographer; | ||
| import org.springframework.http.ResponseEntity; | ||
| import org.springframework.web.bind.annotation.RestController; | ||
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| import java.util.UUID; | ||
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| @RestController | ||
| @RequiredArgsConstructor | ||
| public class GetToken implements GetTokenApi, VersionOneController { | ||
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| private final Cryptographer cryptographer; | ||
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| @SneakyThrows | ||
| @Override | ||
| public ResponseEntity<WsGetToken200Response> getToken(final WsGetTokenRequest wsGetTokenRequest) { | ||
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| final WsGetToken200Response wsGetToken200Response = new WsGetToken200Response(); | ||
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| wsGetToken200Response.token(UUID.randomUUID().toString()); | ||
| final String plainTextToken = TokenHelper.encode(wsGetTokenRequest); | ||
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| wsGetToken200Response.token(cryptographer.encrypt(plainTextToken)); | ||
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| return ResponseEntity.ok(wsGetToken200Response); | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package nl.ictu.controller.v1; | ||
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| import nl.ictu.psuedoniemenservice.generated.server.model.WsIdentifier; | ||
| import nl.ictu.psuedoniemenservice.generated.server.model.WsIdentifierTypes; | ||
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| public final class IdentifierHelper { | ||
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| private final static String DELIMITER = ":"; | ||
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| public static String encode(final WsIdentifier wsIdentifier) { | ||
| return wsIdentifier.getIdentifierType().name() + DELIMITER + wsIdentifier.getIdentifierValue(); | ||
| } | ||
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| public static WsIdentifier decode(final String encoded) { | ||
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| final String[] parts = encoded.split(DELIMITER); | ||
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| final WsIdentifier wsIdentifier = new WsIdentifier(); | ||
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| wsIdentifier.identifierType(WsIdentifierTypes.fromValue(parts[0])); | ||
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| wsIdentifier.identifierValue(parts[1]); | ||
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| return wsIdentifier; | ||
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| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| package nl.ictu.controller.v1; | ||
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| import nl.ictu.psuedoniemenservice.generated.server.model.WsGetTokenRequest; | ||
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| import java.util.StringJoiner; | ||
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| public final class TokenHelper { | ||
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| private static final String DELIMITER = "_"; | ||
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| public static String encode(final WsGetTokenRequest wsGetTokenRequest) { | ||
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| final StringJoiner joiner = new StringJoiner(DELIMITER); | ||
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| joiner.add(wsGetTokenRequest.getReceiverOin()); | ||
| joiner.add(wsGetTokenRequest.getIdentifier().getIdentifierType() + wsGetTokenRequest.getIdentifier().getIdentifierValue()); | ||
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| final String encodedToken = wsGetTokenRequest.getRequesterOin() + DELIMITER + IdentifierHelper.encode(wsGetTokenRequest.getIdentifier()) + DELIMITER + wsGetTokenRequest.getReceiverOin(); | ||
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| return encodedToken; | ||
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| } | ||
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| public static WsGetTokenRequest decode(final String encodedToken) { | ||
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| final String[] parts = encodedToken.split(DELIMITER); | ||
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| final WsGetTokenRequest wsGetTokenRequest = new WsGetTokenRequest(); | ||
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| wsGetTokenRequest.setRequesterOin(parts[0]); | ||
| wsGetTokenRequest.setIdentifier(IdentifierHelper.decode(parts[1])); | ||
| wsGetTokenRequest.setReceiverOin(parts[2]); | ||
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| return wsGetTokenRequest; | ||
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| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package nl.ictu.service; | ||
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| import javax.crypto.Cipher; | ||
| import javax.crypto.KeyGenerator; | ||
| import javax.crypto.NoSuchPaddingException; | ||
| import javax.crypto.SecretKey; | ||
| import javax.crypto.spec.GCMParameterSpec; | ||
| import java.security.NoSuchAlgorithmException; | ||
| import java.security.SecureRandom; | ||
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| public final class AESHelper { | ||
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| final private static int KEY_LENGTH = 256; | ||
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| final public static int IV_LENGTH = 12; | ||
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| final private static int TAG_LENGTH = 128; | ||
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| final private static String CIPHER = "AES/GCM/NoPadding"; | ||
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| final private static SecureRandom secureRandom = new SecureRandom(); | ||
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| // Method to generate a random AES key | ||
| public static SecretKey generateKey() throws NoSuchAlgorithmException { | ||
| KeyGenerator keyGenerator = KeyGenerator.getInstance("AES"); | ||
| keyGenerator.init(KEY_LENGTH); // 128-bit AES encryption | ||
| return keyGenerator.generateKey(); | ||
| } | ||
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| // Method to generate a random Initialization Vector (IV) | ||
| public static GCMParameterSpec generateIV() { | ||
| byte[] iv = new byte[IV_LENGTH]; // AES block size is 16 bytes | ||
| secureRandom.nextBytes(iv); | ||
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| final GCMParameterSpec gcmParameterSpec = new GCMParameterSpec(TAG_LENGTH, iv); | ||
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| return gcmParameterSpec; | ||
| } | ||
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| public static GCMParameterSpec createIVfromValues(byte[] iv) { | ||
| final GCMParameterSpec gcmParameterSpec = new GCMParameterSpec(TAG_LENGTH, iv); | ||
| return gcmParameterSpec; | ||
| } | ||
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| public static Cipher createCipher() throws NoSuchPaddingException, NoSuchAlgorithmException { | ||
| return Cipher.getInstance(CIPHER); | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| package nl.ictu.service; | ||
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| import javax.crypto.BadPaddingException; | ||
| import javax.crypto.IllegalBlockSizeException; | ||
| import javax.crypto.NoSuchPaddingException; | ||
| import java.security.InvalidAlgorithmParameterException; | ||
| import java.security.InvalidKeyException; | ||
| import java.security.NoSuchAlgorithmException; | ||
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| public interface Cryptographer { | ||
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| String encrypt(String plaintext) throws IllegalBlockSizeException, BadPaddingException, InvalidAlgorithmParameterException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException; | ||
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| String decrypt(String ciphertext) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException; | ||
| } |
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