forked from bcgit/bc-java
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
7 changed files
with
604 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
95 changes: 95 additions & 0 deletions
95
pg/src/main/jdk1.1/org/bouncycastle/openpgp/operator/jcajce/JcaJcePGPUtil.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| package org.bouncycastle.openpgp.operator.jcajce; | ||
|
|
||
| import java.io.IOException; | ||
| import java.math.BigInteger; | ||
| import java.security.GeneralSecurityException; | ||
| import java.security.InvalidKeyException; | ||
| import java.security.NoSuchAlgorithmException; | ||
| import java.security.Key; | ||
| import java.security.PublicKey; | ||
| import java.security.spec.AlgorithmParameterSpec; | ||
|
|
||
| import javax.crypto.KeyAgreement; | ||
| import javax.crypto.SecretKey; | ||
| import javax.crypto.spec.SecretKeySpec; | ||
|
|
||
| import org.bouncycastle.asn1.ASN1ObjectIdentifier; | ||
| import org.bouncycastle.asn1.x9.ECNamedCurveTable; | ||
| import org.bouncycastle.asn1.x9.X9ECParameters; | ||
| import org.bouncycastle.bcpg.PublicKeyPacket; | ||
| import org.bouncycastle.crypto.ec.CustomNamedCurves; | ||
| import org.bouncycastle.jcajce.spec.HybridValueParameterSpec; | ||
| import org.bouncycastle.jcajce.spec.UserKeyingMaterialSpec; | ||
| import org.bouncycastle.math.ec.ECCurve; | ||
| import org.bouncycastle.math.ec.ECPoint; | ||
| import org.bouncycastle.openpgp.PGPException; | ||
| import org.bouncycastle.util.Arrays; | ||
| import org.bouncycastle.util.BigIntegers; | ||
| import org.bouncycastle.util.Strings; | ||
|
|
||
| /** | ||
| * Basic utility class | ||
| */ | ||
| class JcaJcePGPUtil | ||
| { | ||
| public static SecretKey makeSymmetricKey( | ||
| int algorithm, | ||
| byte[] keyBytes) | ||
| throws PGPException | ||
| { | ||
| String algName = org.bouncycastle.openpgp.PGPUtil.getSymmetricCipherName(algorithm); | ||
|
|
||
| if (algName == null) | ||
| { | ||
| throw new PGPException("unknown symmetric algorithm: " + algorithm); | ||
| } | ||
|
|
||
| return new SecretKeySpec(keyBytes, algName); | ||
| } | ||
|
|
||
| static ECPoint decodePoint( | ||
| BigInteger encodedPoint, | ||
| ECCurve curve) | ||
| throws IOException | ||
| { | ||
| return curve.decodePoint(BigIntegers.asUnsignedByteArray(encodedPoint)); | ||
| } | ||
|
|
||
| static X9ECParameters getX9Parameters(ASN1ObjectIdentifier curveOID) | ||
| { | ||
| X9ECParameters x9Params = CustomNamedCurves.getByOID(curveOID); | ||
|
|
||
| if (x9Params == null) | ||
| { | ||
| return ECNamedCurveTable.getByOID(curveOID); | ||
| } | ||
|
|
||
| return x9Params; | ||
| } | ||
|
|
||
| static HybridValueParameterSpec getHybridValueParameterSpecWithPrepend(byte[] ephmeralPublicKey, PublicKeyPacket pkp, String algorithmName) | ||
| throws IOException | ||
| { | ||
| return new HybridValueParameterSpec(Arrays.concatenate(ephmeralPublicKey, pkp.getEncoded()), true, new UserKeyingMaterialSpec(Strings.toByteArray("OpenPGP " + algorithmName))); | ||
| } | ||
|
|
||
| static Key getSecret(OperatorHelper helper, PublicKey cryptoPublicKey, String keyEncryptionOID, String agreementName, AlgorithmParameterSpec ukmSpec, Key privKey) | ||
| throws GeneralSecurityException | ||
| { | ||
| try | ||
| { | ||
| KeyAgreement agreement = helper.createKeyAgreement(agreementName); | ||
| agreement.init(privKey, ukmSpec); | ||
| agreement.doPhase(cryptoPublicKey, true); | ||
| return agreement.generateSecret(keyEncryptionOID); | ||
| } | ||
| catch (InvalidKeyException e) | ||
| { | ||
| throw new GeneralSecurityException(e.toString()); | ||
| } | ||
| catch (NoSuchAlgorithmException e) | ||
| { | ||
| throw new GeneralSecurityException(e.toString()); | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.