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Fix bug #49378 - correct 1.6ism

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@951048 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2010-06-03 16:13:38 +00:00
parent 65d7431a9f
commit da0c5ad895
2 changed files with 30 additions and 13 deletions
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1
src/documentation/content/xdocs/status.xml
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@ -34,6 +34,7 @@
<changes>
<release version="3.7-SNAPSHOT" date="2010-??-??">
<action dev="POI-DEVELOPERS" type="fix">49378 - correct 1.6ism</action>
<action dev="POI-DEVELOPERS" type="add">Parse the HSMF headers chunk if present, and use it to find Dates in text extraction if needed</action>
<action dev="POI-DEVELOPERS" type="fix">48494 - detect and support time formats like HH:MM;HH:MM</action>
<action dev="POI-DEVELOPERS" type="fix">48494 - have ExcelExtractor make use of HSSFDataFormatter, so that numbers and dates come out closer to how Excel would render them</action>

42
src/java/org/apache/poi/poifs/crypt/Decryptor.java
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@ -16,22 +16,22 @@
==================================================================== */
package org.apache.poi.poifs.crypt;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.util.LittleEndian;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.util.LittleEndian;
/**
* @author Maxim Valyanskiy
@ -104,7 +104,7 @@ public class Decryptor {
System.arraycopy(x1, 0, x3, 0, x1.length);
System.arraycopy(x2, 0, x3, x1.length, x2.length);
return Arrays.copyOf(x3, requiredKeyLength);
return truncateOrPad(x3, requiredKeyLength);
}
public boolean verifyPassword(String password) throws GeneralSecurityException {
@ -117,10 +117,26 @@ public class Decryptor {
MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
byte[] calcVerifierHash = sha1.digest(verifier);
byte[] verifierHash = Arrays.copyOf(cipher.doFinal(info.getVerifier().getVerifierHash()), calcVerifierHash.length);
byte[] verifierHash = truncateOrPad(cipher.doFinal(info.getVerifier().getVerifierHash()), calcVerifierHash.length);
return Arrays.equals(calcVerifierHash, verifierHash);
}
/**
* Returns a byte array of the requested length,
* truncated or zero padded as needed.
* Behaves like Arrays.copyOf in Java 1.6
*/
private byte[] truncateOrPad(byte[] source, int length) {
byte[] result = new byte[length];
System.arraycopy(source, 0, result, 0, Math.min(length, source.length));
if(length > source.length) {
for(int i=source.length; i<length; i++) {
result[i] = 0;
}
}
return result;
}
private Cipher getCipher() throws GeneralSecurityException {
byte[] key = generateKey(0);