diff options
Diffstat (limited to 'prov/src/main/java/org/bouncycastle/jcajce/provider/symmetric/util/BaseWrapCipher.java')
| -rw-r--r-- | prov/src/main/java/org/bouncycastle/jcajce/provider/symmetric/util/BaseWrapCipher.java | 394 |
1 files changed, 0 insertions, 394 deletions
diff --git a/prov/src/main/java/org/bouncycastle/jcajce/provider/symmetric/util/BaseWrapCipher.java b/prov/src/main/java/org/bouncycastle/jcajce/provider/symmetric/util/BaseWrapCipher.java deleted file mode 100644 index 42ab6217..00000000 --- a/prov/src/main/java/org/bouncycastle/jcajce/provider/symmetric/util/BaseWrapCipher.java +++ /dev/null @@ -1,394 +0,0 @@ -package org.bouncycastle.jcajce.provider.symmetric.util; - -import java.security.AlgorithmParameters; -import java.security.InvalidAlgorithmParameterException; -import java.security.InvalidKeyException; -import java.security.Key; -import java.security.KeyFactory; -import java.security.NoSuchAlgorithmException; -import java.security.NoSuchProviderException; -import java.security.PrivateKey; -import java.security.SecureRandom; -import java.security.spec.AlgorithmParameterSpec; -import java.security.spec.InvalidKeySpecException; -import java.security.spec.PKCS8EncodedKeySpec; -import java.security.spec.X509EncodedKeySpec; - -import javax.crypto.BadPaddingException; -import javax.crypto.Cipher; -import javax.crypto.CipherSpi; -import javax.crypto.IllegalBlockSizeException; -import javax.crypto.NoSuchPaddingException; -import javax.crypto.ShortBufferException; -import javax.crypto.spec.IvParameterSpec; -import javax.crypto.spec.PBEParameterSpec; -import javax.crypto.spec.RC2ParameterSpec; -import javax.crypto.spec.RC5ParameterSpec; -import javax.crypto.spec.SecretKeySpec; - -import org.bouncycastle.asn1.pkcs.PrivateKeyInfo; -import org.bouncycastle.crypto.CipherParameters; -import org.bouncycastle.crypto.InvalidCipherTextException; -import org.bouncycastle.crypto.Wrapper; -import org.bouncycastle.crypto.params.KeyParameter; -import org.bouncycastle.crypto.params.ParametersWithIV; -import org.bouncycastle.crypto.params.ParametersWithRandom; -import org.bouncycastle.jce.provider.BouncyCastleProvider; - -public abstract class BaseWrapCipher - extends CipherSpi - implements PBE -{ - // - // specs we can handle. - // - private Class[] availableSpecs = - { - IvParameterSpec.class, - PBEParameterSpec.class, - RC2ParameterSpec.class, - RC5ParameterSpec.class - }; - - protected int pbeType = PKCS12; - protected int pbeHash = SHA1; - protected int pbeKeySize; - protected int pbeIvSize; - - protected AlgorithmParameters engineParams = null; - - protected Wrapper wrapEngine = null; - - private int ivSize; - private byte[] iv; - - protected BaseWrapCipher() - { - } - - protected BaseWrapCipher( - Wrapper wrapEngine) - { - this(wrapEngine, 0); - } - - protected BaseWrapCipher( - Wrapper wrapEngine, - int ivSize) - { - this.wrapEngine = wrapEngine; - this.ivSize = ivSize; - } - - protected int engineGetBlockSize() - { - return 0; - } - - protected byte[] engineGetIV() - { - return (byte[])iv.clone(); - } - - protected int engineGetKeySize( - Key key) - { - return key.getEncoded().length; - } - - protected int engineGetOutputSize( - int inputLen) - { - return -1; - } - - protected AlgorithmParameters engineGetParameters() - { - return null; - } - - protected void engineSetMode( - String mode) - throws NoSuchAlgorithmException - { - throw new NoSuchAlgorithmException("can't support mode " + mode); - } - - protected void engineSetPadding( - String padding) - throws NoSuchPaddingException - { - throw new NoSuchPaddingException("Padding " + padding + " unknown."); - } - - protected void engineInit( - int opmode, - Key key, - AlgorithmParameterSpec params, - SecureRandom random) - throws InvalidKeyException, InvalidAlgorithmParameterException - { - CipherParameters param; - - if (key instanceof BCPBEKey) - { - BCPBEKey k = (BCPBEKey)key; - - if (params instanceof PBEParameterSpec) - { - param = PBE.Util.makePBEParameters(k, params, wrapEngine.getAlgorithmName()); - } - else if (k.getParam() != null) - { - param = k.getParam(); - } - else - { - throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set."); - } - } - else - { - param = new KeyParameter(key.getEncoded()); - } - - if (params instanceof IvParameterSpec) - { - IvParameterSpec iv = (IvParameterSpec) params; - param = new ParametersWithIV(param, iv.getIV()); - } - - if (param instanceof KeyParameter && ivSize != 0) - { - iv = new byte[ivSize]; - random.nextBytes(iv); - param = new ParametersWithIV(param, iv); - } - - if (random != null) - { - param = new ParametersWithRandom(param, random); - } - - switch (opmode) - { - case Cipher.WRAP_MODE: - wrapEngine.init(true, param); - break; - case Cipher.UNWRAP_MODE: - wrapEngine.init(false, param); - break; - case Cipher.ENCRYPT_MODE: - case Cipher.DECRYPT_MODE: - throw new IllegalArgumentException("engine only valid for wrapping"); - default: - System.out.println("eeek!"); - } - } - - protected void engineInit( - int opmode, - Key key, - AlgorithmParameters params, - SecureRandom random) - throws InvalidKeyException, InvalidAlgorithmParameterException - { - AlgorithmParameterSpec paramSpec = null; - - if (params != null) - { - for (int i = 0; i != availableSpecs.length; i++) - { - try - { - paramSpec = params.getParameterSpec(availableSpecs[i]); - break; - } - catch (Exception e) - { - // try next spec - } - } - - if (paramSpec == null) - { - throw new InvalidAlgorithmParameterException("can't handle parameter " + params.toString()); - } - } - - engineParams = params; - engineInit(opmode, key, paramSpec, random); - } - - protected void engineInit( - int opmode, - Key key, - SecureRandom random) - throws InvalidKeyException - { - try - { - engineInit(opmode, key, (AlgorithmParameterSpec)null, random); - } - catch (InvalidAlgorithmParameterException e) - { - throw new IllegalArgumentException(e.getMessage()); - } - } - - protected byte[] engineUpdate( - byte[] input, - int inputOffset, - int inputLen) - { - throw new RuntimeException("not supported for wrapping"); - } - - protected int engineUpdate( - byte[] input, - int inputOffset, - int inputLen, - byte[] output, - int outputOffset) - throws ShortBufferException - { - throw new RuntimeException("not supported for wrapping"); - } - - protected byte[] engineDoFinal( - byte[] input, - int inputOffset, - int inputLen) - throws IllegalBlockSizeException, BadPaddingException - { - return null; - } - - protected int engineDoFinal( - byte[] input, - int inputOffset, - int inputLen, - byte[] output, - int outputOffset) - throws IllegalBlockSizeException, BadPaddingException, ShortBufferException - { - return 0; - } - - protected byte[] engineWrap( - Key key) - throws IllegalBlockSizeException, InvalidKeyException - { - byte[] encoded = key.getEncoded(); - if (encoded == null) - { - throw new InvalidKeyException("Cannot wrap key, null encoding."); - } - - try - { - if (wrapEngine == null) - { - return engineDoFinal(encoded, 0, encoded.length); - } - else - { - return wrapEngine.wrap(encoded, 0, encoded.length); - } - } - catch (BadPaddingException e) - { - throw new IllegalBlockSizeException(e.getMessage()); - } - } - - protected Key engineUnwrap( - byte[] wrappedKey, - String wrappedKeyAlgorithm, - int wrappedKeyType) - throws InvalidKeyException, NoSuchAlgorithmException - { - byte[] encoded; - try - { - if (wrapEngine == null) - { - encoded = engineDoFinal(wrappedKey, 0, wrappedKey.length); - } - else - { - encoded = wrapEngine.unwrap(wrappedKey, 0, wrappedKey.length); - } - } - catch (InvalidCipherTextException e) - { - throw new InvalidKeyException(e.getMessage()); - } - catch (BadPaddingException e) - { - throw new InvalidKeyException(e.getMessage()); - } - catch (IllegalBlockSizeException e2) - { - throw new InvalidKeyException(e2.getMessage()); - } - - if (wrappedKeyType == Cipher.SECRET_KEY) - { - return new SecretKeySpec(encoded, wrappedKeyAlgorithm); - } - else if (wrappedKeyAlgorithm.equals("") && wrappedKeyType == Cipher.PRIVATE_KEY) - { - /* - * The caller doesn't know the algorithm as it is part of - * the encrypted data. - */ - try - { - PrivateKeyInfo in = PrivateKeyInfo.getInstance(encoded); - - PrivateKey privKey = BouncyCastleProvider.getPrivateKey(in); - - if (privKey != null) - { - return privKey; - } - else - { - throw new InvalidKeyException("algorithm " + in.getPrivateKeyAlgorithm().getAlgorithm() + " not supported"); - } - } - catch (Exception e) - { - throw new InvalidKeyException("Invalid key encoding."); - } - } - else - { - try - { - KeyFactory kf = KeyFactory.getInstance(wrappedKeyAlgorithm, BouncyCastleProvider.PROVIDER_NAME); - - if (wrappedKeyType == Cipher.PUBLIC_KEY) - { - return kf.generatePublic(new X509EncodedKeySpec(encoded)); - } - else if (wrappedKeyType == Cipher.PRIVATE_KEY) - { - return kf.generatePrivate(new PKCS8EncodedKeySpec(encoded)); - } - } - catch (NoSuchProviderException e) - { - throw new InvalidKeyException("Unknown key type " + e.getMessage()); - } - catch (InvalidKeySpecException e2) - { - throw new InvalidKeyException("Unknown key type " + e2.getMessage()); - } - - throw new InvalidKeyException("Unknown key type " + wrappedKeyType); - } - } - -} |