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author | Andreas Tobler <a.tobler@schweiz.ch> | 2004-09-21 10:33:35 +0200 |
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committer | Andreas Tobler <andreast@gcc.gnu.org> | 2004-09-21 10:33:35 +0200 |
commit | 6f5ce93bab1c1ce6df0e71aa450f841f3d979bbc (patch) | |
tree | 9ec0d44b2435653b3e450bf4293546636a609d31 /libjava/javax/crypto/CipherInputStream.java | |
parent | c93320c457dc75596c5482cdbef7783ad6cdaf2e (diff) | |
download | gcc-6f5ce93bab1c1ce6df0e71aa450f841f3d979bbc.zip gcc-6f5ce93bab1c1ce6df0e71aa450f841f3d979bbc.tar.gz gcc-6f5ce93bab1c1ce6df0e71aa450f841f3d979bbc.tar.bz2 |
[multiple changes]
2004-09-21 Andreas Tobler <a.tobler@schweiz.ch>
Import the big Crypto/Jessie/Security merge from Classpath.
* Makefile.am: Add imported files.
* Makefile.in: Regenerate.
2004-08-14 Casey Marshall <csm@gnu.org>
The Big Crypto Merge of 2004.
* javax/security/auth/x500/X500Principal.java: Replaced with GNU
Crypto's version.
Files imported from GNU Crypto.
* javax/crypto/BadPaddingException.java
* javax/crypto/Cipher.java
* javax/crypto/CipherInputStream.java
* javax/crypto/CipherOutputStream.java
* javax/crypto/CipherSpi.java
* javax/crypto/EncryptedPrivateKeyInfo.java
* javax/crypto/ExemptionMechanism.java
* javax/crypto/ExemptionMechanismException.java
* javax/crypto/ExemptionMechanismSpi.java
* javax/crypto/IllegalBlockSizeException.java
* javax/crypto/KeyAgreement.java
* javax/crypto/KeyAgreementSpi.java
* javax/crypto/KeyGenerator.java
* javax/crypto/KeyGeneratorSpi.java
* javax/crypto/Mac.java
* javax/crypto/MacSpi.java
* javax/crypto/Makefile.am
* javax/crypto/NoSuchPaddingException.java
* javax/crypto/NullCipher.java
* javax/crypto/NullCipherImpl.java
* javax/crypto/SealedObject.java
* javax/crypto/SecretKey.java
* javax/crypto/SecretKeyFactory.java
* javax/crypto/SecretKeyFactorySpi.java
* javax/crypto/ShortBufferException.java
* javax/crypto/interfaces/DHKey.java
* javax/crypto/interfaces/DHPrivateKey.java
* javax/crypto/interfaces/DHPublicKey.java
* javax/crypto/interfaces/PBEKey.java
* javax/crypto/spec/DESKeySpec.java
* javax/crypto/spec/DESedeKeySpec.java
* javax/crypto/spec/DHGenParameterSpec.java
* javax/crypto/spec/DHParameterSpec.java
* javax/crypto/spec/DHPrivateKeySpec.java
* javax/crypto/spec/DHPublicKeySpec.java
* javax/crypto/spec/IvParameterSpec.java
* javax/crypto/spec/PBEKeySpec.java
* javax/crypto/spec/PBEParameterSpec.java
* javax/crypto/spec/RC2ParameterSpec.java
* javax/crypto/spec/RC5ParameterSpec.java
* javax/crypto/spec/SecretKeySpec.java
* javax/security/auth/AuthPermission.java
* javax/security/auth/DestroyFailedException.java
* javax/security/auth/Destroyable.java
* javax/security/auth/Policy.java
* javax/security/auth/PrivateCredentialPermission.java
* javax/security/auth/RefreshFailedException.java
* javax/security/auth/Refreshable.java
* javax/security/auth/Subject.java
* javax/security/auth/SubjectDomainCombiner.java
* javax/security/auth/callback/Callback.java
* javax/security/auth/callback/CallbackHandler.java
* javax/security/auth/callback/ChoiceCallback.java
* javax/security/auth/callback/ConfirmationCallback.java
* javax/security/auth/callback/LanguageCallback.java
* javax/security/auth/callback/NameCallback.java
* javax/security/auth/callback/PasswordCallback.java
* javax/security/auth/callback/TextInputCallback.java
* javax/security/auth/callback/TextOutputCallback.java
* javax/security/auth/callback/UnsupportedCallbackException.java
* javax/security/auth/login/AccountExpiredException.java
* javax/security/auth/login/AppConfigurationEntry.java
* javax/security/auth/login/Configuration.java
* javax/security/auth/login/CredentialExpiredException.java
* javax/security/auth/login/FailedLoginException.java
* javax/security/auth/login/LoginContext.java
* javax/security/auth/login/LoginException.java
* javax/security/auth/login/NullConfiguration.java
* javax/security/auth/x500/X500PrivateCredential.java
* javax/security/sasl/AuthenticationException.java
* javax/security/sasl/AuthorizeCallback.java
* javax/security/sasl/RealmCallback.java
* javax/security/sasl/RealmChoiceCallback.java
* javax/security/sasl/Sasl.java
* javax/security/sasl/SaslClient.java
* javax/security/sasl/SaslClientFactory.java
* javax/security/sasl/SaslException.java
* javax/security/sasl/SaslServer.java
* javax/security/sasl/SaslServerFactory.java
* org/ietf/jgss/ChannelBinding.java
* org/ietf/jgss/GSSContext.java
* org/ietf/jgss/GSSCredential.java
* org/ietf/jgss/GSSException.java
* org/ietf/jgss/GSSManager.java
* org/ietf/jgss/GSSName.java
* org/ietf/jgss/MessageProp.java
* org/ietf/jgss/Oid.java
* org/ietf/jgss/MessagesBundle.properties
Files imported from Jessie <http://www.nongnu.org/jessie/>
* javax/net/ServerSocketFactory.java
* javax/net/SocketFactory.java
* javax/net/VanillaServerSocketFactory.java
* javax/net/VanillaSocketFactory.java
* javax/net/ssl/HandshakeCompletedEvent.java
* javax/net/ssl/HandshakeCompletedListener.java
* javax/net/ssl/HostnameVerifier.java
* javax/net/ssl/HttpsURLConnection.java
* javax/net/ssl/KeyManager.java
* javax/net/ssl/KeyManagerFactory.java
* javax/net/ssl/KeyManagerFactorySpi.java
* javax/net/ssl/ManagerFactoryParameters.java
* javax/net/ssl/SSLContext.java
* javax/net/ssl/SSLContextSpi.java
* javax/net/ssl/SSLException.java
* javax/net/ssl/SSLHandshakeException.java
* javax/net/ssl/SSLKeyException.java
* javax/net/ssl/SSLPeerUnverifiedException.java
* javax/net/ssl/SSLPermission.java
* javax/net/ssl/SSLProtocolException.java
* javax/net/ssl/SSLServerSocket.java
* javax/net/ssl/SSLServerSocketFactory.java
* javax/net/ssl/SSLSession.java
* javax/net/ssl/SSLSessionBindingEvent.java
* javax/net/ssl/SSLSessionBindingListener.java
* javax/net/ssl/SSLSessionContext.java
* javax/net/ssl/SSLSocket.java
* javax/net/ssl/SSLSocketFactory.java
* javax/net/ssl/TrivialHostnameVerifier.java
* javax/net/ssl/TrustManager.java
* javax/net/ssl/TrustManagerFactory.java
* javax/net/ssl/TrustManagerFactorySpi.java
* javax/net/ssl/X509KeyManager.java
* javax/net/ssl/X509TrustManager.java
* javax/security/cert/Certificate.java
* javax/security/cert/CertificateEncodingException.java
* javax/security/cert/CertificateException.java
* javax/security/cert/CertificateExpiredException.java
* javax/security/cert/CertificateNotYetValidException.java
* javax/security/cert/CertificateParsingException.java
* javax/security/cert/X509CertBridge.java
* javax/security/cert/X509Certificate.java
2004-08-20 Casey Marshall <csm@gnu.org>
* java/security/cert/X509CRLSelector.java: New file.
* java/security/cert/X509CertSelector.java: New file.
From-SVN: r87795
Diffstat (limited to 'libjava/javax/crypto/CipherInputStream.java')
-rw-r--r-- | libjava/javax/crypto/CipherInputStream.java | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/libjava/javax/crypto/CipherInputStream.java b/libjava/javax/crypto/CipherInputStream.java new file mode 100644 index 0000000..c01cb47 --- /dev/null +++ b/libjava/javax/crypto/CipherInputStream.java @@ -0,0 +1,383 @@ +/* CipherInputStream.java -- Filters input through a cipher. + Copyright (C) 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package javax.crypto; + +import java.io.FilterInputStream; +import java.io.IOException; +import java.io.InputStream; + +/** + * This is an {@link java.io.InputStream} that filters its data + * through a {@link Cipher} before returning it. The <code>Cipher</code> + * argument must have been initialized before it is passed to the + * constructor. + * + * @author Casey Marshall (csm@gnu.org) + */ +public class CipherInputStream extends FilterInputStream +{ + + // Constants and variables. + // ------------------------------------------------------------------------ + + /** + * The underlying {@link Cipher} instance. + */ + private Cipher cipher; + + /** + * Data that has been transformed but not read. + */ + private byte[] outBuffer; + + /** + * The offset into {@link #outBuffer} where valid data starts. + */ + private int outOffset; + + /** + * The number of valid bytes in the {@link #outBuffer}. + */ + private int outLength; + + /** + * Byte buffer that is filled with raw data from the underlying input + * stream. + */ + private byte[][] inBuffer; + + /** + * The amount of bytes in inBuffer[0] that may be input to the cipher. + */ + private int inLength; + + /** + * We set this when the cipher block size is 1, meaning that we can + * transform any amount of data. + */ + private boolean isStream; + + private static final int VIRGIN = 0; // I am born. + private static final int LIVING = 1; // I am nailed to the hull. + private static final int DYING = 2; // I am eaten by sharks. + private static final int DEAD = 3; + private int state; + + // Constructors. + // ------------------------------------------------------------------------ + + /** + * Creates a new input stream with a source input stream and cipher. + * + * @param in The underlying input stream. + * @param cipher The cipher to filter data through. + */ + public CipherInputStream(InputStream in, Cipher cipher) + { + this(in); + this.cipher = cipher; + if (!(isStream = cipher.getBlockSize() == 1)) + { + inBuffer = new byte[2][]; + inBuffer[0] = new byte[cipher.getBlockSize()]; + inBuffer[1] = new byte[cipher.getBlockSize()]; + inLength = 0; + outBuffer = new byte[cipher.getBlockSize()]; + outOffset = outLength = 0; + state = VIRGIN; + } + } + + /** + * Creates a new input stream without a cipher. This constructor is + * <code>protected</code> because this class does not work without an + * underlying cipher. + * + * @param in The underlying input stream. + */ + protected CipherInputStream(InputStream in) + { + super(in); + } + + // Instance methods overriding java.io.FilterInputStream. + // ------------------------------------------------------------------------ + + /** + * Returns the number of bytes available without blocking. The value + * returned by this method is never greater than the underlying + * cipher's block size. + * + * @return The number of bytes immediately available. + * @throws java.io.IOException If an I/O exception occurs. + */ + public int available() throws IOException + { + if (isStream) + return super.available(); + return outLength - outOffset; + } + + /** + * Close this input stream. This method merely calls the {@link + * java.io.InputStream#close()} method of the underlying input stream. + * + * @throws java.io.IOException If an I/O exception occurs. + */ + public void close() throws IOException + { + super.close(); + } + + /** + * Read a single byte from this input stream; returns -1 on the + * end-of-file. + * + * @return The byte read, or -1 if there are no more bytes. + * @throws java.io.IOExcpetion If an I/O exception occurs. + */ + public int read() throws IOException + { + if (isStream) + { + byte[] buf = new byte[1]; + int in = super.read(); + if (in == -1) + return -1; + buf[0] = (byte) in; + try + { + cipher.update(buf, 0, 1, buf, 0); + } + catch (ShortBufferException shouldNotHappen) + { + throw new IOException(shouldNotHappen.getMessage()); + } + return buf[0] & 0xFF; + } + if (state == DEAD) return -1; + if (available() == 0) nextBlock(); + if (state == DEAD) return -1; + return outBuffer[outOffset++] & 0xFF; + } + + /** + * Read bytes into an array, returning the number of bytes read or -1 + * on the end-of-file. + * + * @param buf The byte array to read into. + * @param off The offset in <code>buf</code> to start. + * @param len The maximum number of bytes to read. + * @return The number of bytes read, or -1 on the end-of-file. + * @throws java.io.IOException If an I/O exception occurs. + */ + public int read(byte[] buf, int off, int len) throws IOException + { + if (isStream) + { + len = super.read(buf, off, len); + try + { + cipher.update(buf, off, len, buf, off); + } + catch (ShortBufferException shouldNotHappen) + { + throw new IOException(shouldNotHappen.getMessage()); + } + return len; + } + + int count = 0; + while (count < len) + { + if (available() == 0) + nextBlock(); + if (state == DEAD) + { + if (count > 0) return count; + else return -1; + } + int l = Math.min(available(), len - count); + System.arraycopy(outBuffer, outOffset, buf, count+off, l); + count += l; + outOffset = outLength = 0; + } + return count; + } + + /** + * Read bytes into an array, returning the number of bytes read or -1 + * on the end-of-file. + * + * @param buf The byte arry to read into. + * @return The number of bytes read, or -1 on the end-of-file. + * @throws java.io.IOException If an I/O exception occurs. + */ + public int read(byte[] buf) throws IOException + { + return read(buf, 0, buf.length); + } + + /** + * Skip a number of bytes. This class only supports skipping as many + * bytes as are returned by {@link #available()}, which is the number + * of transformed bytes currently in this class's internal buffer. + * + * @param bytes The number of bytes to skip. + * @return The number of bytes skipped. + */ + public long skip(long bytes) throws IOException + { + if (isStream) + { + return super.skip(bytes); + } + long ret = 0; + if (bytes > 0 && available() > 0) + { + ret = available(); + outOffset = outLength = 0; + } + return ret; + } + + /** + * Returns whether or not this input stream supports the {@link + * #mark(long)} and {@link #reset()} methods; this input stream does + * not, however, and invariably returns <code>false</code>. + * + * @return <code>false</code> + */ + public boolean markSupported() + { + return false; + } + + /** + * Set the mark. This method is unsupported and is empty. + * + * @param mark Is ignored. + */ + public void mark(long mark) + { + } + + /** + * Reset to the mark. This method is unsupported and is empty. + */ + public void reset() throws IOException + { + throw new IOException("reset not supported"); + } + + // Own methods. + // ------------------------------------------------------------------------- + + private void nextBlock() throws IOException + { + byte[] temp = inBuffer[0]; + inBuffer[0] = inBuffer[1]; + inBuffer[1] = temp; + int count = 0; + boolean eof = false; + + if (state == VIRGIN || state == LIVING) + { + do + { + int l = in.read(inBuffer[1], count, inBuffer[1].length - count); + if (l == -1) + { + eof = true; + break; + } + count += l; + } + while (count < inBuffer[1].length); + } + + try + { + switch (state) + { + case VIRGIN: + state = LIVING; + nextBlock(); + break; + case LIVING: + if (eof) + { + if (count > 0) + { + outOffset = cipher.update(inBuffer[0], 0, inLength, outBuffer, 0); + state = DYING; + } + else + { + outOffset = cipher.doFinal(inBuffer[0], 0, inLength, outBuffer, 0); + state = DEAD; + } + } + else + { + outOffset = cipher.update(inBuffer[0], 0, inLength, outBuffer, 0); + } + break; + case DYING: + outOffset = cipher.doFinal(inBuffer[0], 0, inLength, outBuffer, 0); + state = DEAD; + break; + case DEAD: + } + } + catch (ShortBufferException sbe) + { + throw new IOException(sbe.toString()); + } + catch (BadPaddingException bpe) + { + throw new IOException(bpe.toString()); + } + catch (IllegalBlockSizeException ibse) + { + throw new IOException(ibse.toString()); + } + inLength = count; + } +} |