package org.thoughtcrime.securesms.util;
import java.io.IOException;
/**
* <p>Encodes and decodes to and from Base64 notation.</p>
* <p>Homepage: <a href="http://iharder.net/base64">http://iharder.net/base64</a>.</p>
*
* <p>Example:</p>
*
* <code>String encoded = Base64.encode( myByteArray );</code>
* <br />
* <code>byte[] myByteArray = Base64.decode( encoded );</code>
*
* <p>The <tt>options</tt> parameter, which appears in a few places, is used to pass
* several pieces of information to the encoder. In the "higher level" methods such as
* encodeBytes( bytes, options ) the options parameter can be used to indicate such
* things as first gzipping the bytes before encoding them, not inserting linefeeds,
* and encoding using the URL-safe and Ordered dialects.</p>
*
* <p>Note, according to <a href="http://www.faqs.org/rfcs/rfc3548.html">RFC3548</a>,
* Section 2.1, implementations should not add line feeds unless explicitly told
* to do so. I've got Base64 set to this behavior now, although earlier versions
* broke lines by default.</p>
*
* <p>The constants defined in Base64 can be OR-ed together to combine options, so you
* might make a call like this:</p>
*
* <code>String encoded = Base64.encodeBytes( mybytes, Base64.GZIP | Base64.DO_BREAK_LINES );</code>
* <p>to compress the data before encoding it and then making the output have newline characters.</p>
* <p>Also...</p>
* <code>String encoded = Base64.encodeBytes( crazyString.getBytes() );</code>
*
*
*
* <p>
* Change Log:
* </p>
* <ul>
* <li>v2.3.4 - Fixed bug when working with gzipped streams whereby flushing
* the Base64.OutputStream closed the Base64 encoding (by padding with equals
* signs) too soon. Also added an option to suppress the automatic decoding
* of gzipped streams. Also added experimental support for specifying a
* class loader when using the
* {@link #decodeToObject(java.lang.String, int, java.lang.ClassLoader)}
* method.</li>
* <li>v2.3.3 - Changed default char encoding to US-ASCII which reduces the internal Java
* footprint with its CharEncoders and so forth. Fixed some javadocs that were
* inconsistent. Removed imports and specified things like java.io.IOException
* explicitly inline.</li>
* <li>v2.3.2 - Reduced memory footprint! Finally refined the "guessing" of how big the
* final encoded data will be so that the code doesn't have to create two output
* arrays: an oversized initial one and then a final, exact-sized one. Big win
* when using the {@link #encodeBytesToBytes(byte[])} family of methods (and not
* using the gzip options which uses a different mechanism with streams and stuff).</li>
* <li>v2.3.1 - Added {@link #encodeBytesToBytes(byte[], int, int, int)} and some
* similar helper methods to be more efficient with memory by not returning a
* String but just a byte array.</li>
* <li>v2.3 - <strong>This is not a drop-in replacement!</strong> This is two years of comments
* and bug fixes queued up and finally executed. Thanks to everyone who sent
* me stuff, and I'm sorry I wasn't able to distribute your fixes to everyone else.
* Much bad coding was cleaned up including throwing exceptions where necessary
* instead of returning null values or something similar. Here are some changes
* that may affect you:
* <ul>
* <li><em>Does not break lines, by default.</em> This is to keep in compliance with
* <a href="http://www.faqs.org/rfcs/rfc3548.html">RFC3548</a>.</li>
* <li><em>Throws exceptions instead of returning null values.</em> Because some operations
* (especially those that may permit the GZIP option) use IO streams, there
* is a possiblity of an java.io.IOException being thrown. After some discussion and
* thought, I've changed the behavior of the methods to throw java.io.IOExceptions
* rather than return null if ever there's an error. I think this is more
* appropriate, though it will require some changes to your code. Sorry,
* it should have been done this way to begin with.</li>
* <li><em>Removed all references to System.out, System.err, and the like.</em>
* Shame on me. All I can say is sorry they were ever there.</li>
* <li><em>Throws NullPointerExceptions and IllegalArgumentExceptions</em> as needed
* such as when passed arrays are null or offsets are invalid.</li>
* <li>Cleaned up as much javadoc as I could to avoid any javadoc warnings.
* This was especially annoying before for people who were thorough in their
* own projects and then had gobs of javadoc warnings on this file.</li>
* </ul>
* <li>v2.2.1 - Fixed bug using URL_SAFE and ORDERED encodings. Fixed bug
* when using very small files (~< 40 bytes).</li>
* <li>v2.2 - Added some helper methods for encoding/decoding directly from
* one file to the next. Also added a main() method to support command line
* encoding/decoding from one file to the next. Also added these Base64 dialects:
* <ol>
* <li>The default is RFC3548 format.</li>
* <li>Calling Base64.setFormat(Base64.BASE64_FORMAT.URLSAFE_FORMAT) generates
* URL and file name friendly format as described in Section 4 of RFC3548.
* http://www.faqs.org/rfcs/rfc3548.html</li>
* <li>Calling Base64.setFormat(Base64.BASE64_FORMAT.ORDERED_FORMAT) generates
* URL and file name friendly format that preserves lexical ordering as described
* in http://www.faqs.org/qa/rfcc-1940.html</li>
* </ol>
* Special thanks to Jim Kellerman at <a href="http://www.powerset.com/">http://www.powerset.com/</a>
* for contributing the new Base64 dialects.
* </li>
*
* <li>v2.1 - Cleaned up javadoc comments and unused variables and methods. Added
* some convenience methods for reading and writing to and from files.</li>
* <li>v2.0.2 - Now specifies UTF-8 encoding in places where the code fails on systems
* with other encodings (like EBCDIC).</li>
* <li>v2.0.1 - Fixed an error when decoding a single byte, that is, when the
* encoded data was a single byte.</li>
* <li>v2.0 - I got rid of methods that used booleans to set options.
* Now everything is more consolidated and cleaner. The code now detects
* when data that's being decoded is gzip-compressed and will decompress it
* automatically. Generally things are cleaner. You'll probably have to
* change some method calls that you were making to support the new
* options format (<tt>int</tt>s that you "OR" together).</li>
* <li>v1.5.1 - Fixed bug when decompressing and decoding to a
* byte[] using <tt>decode( String s, boolean gzipCompressed )</tt>.
* Added the ability to "suspend" encoding in the Output Stream so
* you can turn on and off the encoding if you need to embed base64
* data in an otherwise "normal" stream (like an XML file).</li>
* <li>v1.5 - Output stream pases on flush() command but doesn't do anything itself.
* This helps when using GZIP streams.
* Added the ability to GZip-compress objects before encoding them.</li>
* <li>v1.4 - Added helper methods to read/write files.</li>
* <li>v1.3.6 - Fixed OutputStream.flush() so that 'position' is reset.</li>
* <li>v1.3.5 - Added flag to turn on and off line breaks. Fixed bug in input stream
* where last buffer being read, if not completely full, was not returned.</li>
* <li>v1.3.4 - Fixed when "improperly padded stream" error was thrown at the wrong time.</li>
* <li>v1.3.3 - Fixed I/O streams which were totally messed up.</li>
* </ul>
*
* <p>
* I am placing this code in the Public Domain. Do with it as you will.
* This software comes with no guarantees or warranties but with
* plenty of well-wishing instead!
* Please visit <a href="http://iharder.net/base64">http://iharder.net/base64</a>
* periodically to check for updates or to contribute improvements.
* </p>
*
* @author Robert Harder
* @author rob@iharder.net
*
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小程序 下的加密信息客户端 WhisperSystems-TextSecure.zip
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小程序 下的加密信息客户端 WhisperSystems-TextSecure.zip (397个子文件)
disclaimer 232B
eula 31KB
padlock.gif 1KB
.gitignore 59B
package.html 81B
package.html 25B
package.html 25B
Base64.java 85KB
PduParser.java 72KB
ECFieldElement.java 39KB
PduComposer.java 38KB
SecureSMS.java 34KB
ComposeMessageActivity.java 33KB
PduHeaders.java 31KB
Tnaf.java 26KB
MmsDatabase.java 25KB
ECCurve.java 21KB
ConversationItem.java 21KB
ECPoint.java 17KB
RecipientsEditor.java 14KB
ContactAccessorNewApi.java 14KB
SmsDatabase.java 13KB
IntArray.java 13KB
PduPart.java 12KB
PartDatabase.java 12KB
IntentIntegrator.java 12KB
MasterSecretUtil.java 12KB
ApplicationPreferencesActivity.java 11KB
ASN1InputStream.java 11KB
SessionCipher.java 11KB
ContactAccessorOldApi.java 11KB
ContactSelectionListActivity.java 11KB
DecryptingQueue.java 10KB
SendReq.java 10KB
ThreadDatabase.java 10KB
ContentType.java 9KB
MultipartMessageHandler.java 9KB
ReceiveKeyActivity.java 9KB
KeyCachingService.java 9KB
ASN1Set.java 9KB
NotificationInd.java 9KB
EncodedStringValue.java 9KB
RetrieveConf.java 8KB
SendReceiveService.java 8KB
ContactSelectionRecentActivity.java 8KB
DERGeneralizedTime.java 8KB
VerifyIdentityActivity.java 8KB
MessageNotifier.java 8KB
DERObjectIdentifier.java 8KB
SmsReceiver.java 8KB
MmsSender.java 8KB
SmsMigrator.java 8KB
MasterCipher.java 8KB
IdentityKeyUtil.java 7KB
SmsSender.java 7KB
WNafMultiplier.java 7KB
PngTransport.java 7KB
GroupSelectionListActivity.java 7KB
ConversationAdapter.java 7KB
SessionRecord.java 7KB
RecipientFactory.java 7KB
MmsDownloader.java 7KB
SimpleBigDecimal.java 7KB
ReviewIdentitiesActivity.java 7KB
ConversationHeaderView.java 6KB
Strings.java 6KB
DERUTCTime.java 6KB
DERBitString.java 6KB
PduContentTypes.java 6KB
VerifyKeysActivity.java 6KB
MmsCommunication.java 6KB
VerifyImportedIdentityActivity.java 6KB
KeyUtil.java 6KB
CharacterSets.java 6KB
AsymmetricMasterCipher.java 6KB
KeyExchangeProcessor.java 6KB
Message.java 6KB
DecryptingPartInputStream.java 6KB
ASN1Sequence.java 6KB
RecipientsAdapter.java 6KB
DatabaseFactory.java 6KB
LedBlinkPatternListPreference.java 6KB
Eula.java 6KB
PartProvider.java 6KB
ContactAccessor.java 5KB
DERApplicationSpecific.java 5KB
ASN1TaggedObject.java 5KB
ImageSlide.java 5KB
CanonicalAddressDatabase.java 5KB
AttachmentManager.java 5KB
PduBody.java 5KB
Base64.java 5KB
KeyExchangeMessage.java 5KB
Conversions.java 5KB
MmsSmsDatabase.java 5KB
MmsAddressDatabase.java 5KB
ArrayListCursor.java 5KB
SmsTransportDetails.java 5KB
SendKeyActivity.java 5KB
IdentityDatabase.java 5KB
共 397 条
- 1
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