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What Is poi-5.2.3.jar?
What Is poi-5.2.3.jar?
✍: FYIcenter.com
poi-5.2.3.jar is one of the JAR files for Apache POI 5.2.3, which provides an API for Microsoft document files of Word, Excel, PowerPoint, and Visio.
poi-5.2.3.jar supports Apache POI components that read and write Microsoft's OLE 2 Compound document format, which is used in early versions of Microsoft Office tools like Word 97, Excel 97, PowerPoint 97, etc.
poi-5.2.3.jar is distributed as part of the poi-bin-5.2.3-20220909.zip download file.
JAR File Size and Download Location:
JAR name: poi-5.2.3.jar Target JDK version: 9 File name: poi.jar, poi-5.2.3.jar File size: 2964641 bytes Release date: 09-09-2022 Download: Apache POI Website
Here are Java Source Code files for poi-5.2.3.jar:
⏎ org/apache/poi/poifs/crypt/standard/StandardEncryptionVerifier.java
/* ==================================================================== Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ==================================================================== */ package org.apache.poi.poifs.crypt.standard; import org.apache.poi.EncryptedDocumentException; import org.apache.poi.poifs.crypt.ChainingMode; import org.apache.poi.poifs.crypt.CipherAlgorithm; import org.apache.poi.poifs.crypt.EncryptionVerifier; import org.apache.poi.poifs.crypt.HashAlgorithm; import org.apache.poi.util.LittleEndianByteArrayOutputStream; import org.apache.poi.util.LittleEndianInput; /** * Used when checking if a key is valid for a document */ public class StandardEncryptionVerifier extends EncryptionVerifier implements EncryptionRecord { private static final int SPIN_COUNT = 50000; private final int verifierHashSize; protected StandardEncryptionVerifier(LittleEndianInput is, StandardEncryptionHeader header) { int saltSize = is.readInt(); if (saltSize != 16) { throw new IllegalArgumentException("Salt size != 16: " + saltSize); } byte[] salt = new byte[16]; is.readFully(salt); setSalt(salt); byte[] encryptedVerifier = new byte[16]; is.readFully(encryptedVerifier); setEncryptedVerifier(encryptedVerifier); verifierHashSize = is.readInt(); byte[] encryptedVerifierHash = new byte[header.getCipherAlgorithm().encryptedVerifierHashLength]; is.readFully(encryptedVerifierHash); setEncryptedVerifierHash(encryptedVerifierHash); setSpinCount(SPIN_COUNT); setCipherAlgorithm(header.getCipherAlgorithm()); setChainingMode(header.getChainingMode()); setEncryptedKey(null); setHashAlgorithm(header.getHashAlgorithm()); } protected StandardEncryptionVerifier(CipherAlgorithm cipherAlgorithm, HashAlgorithm hashAlgorithm, int keyBits, int blockSize, ChainingMode chainingMode) { setCipherAlgorithm(cipherAlgorithm); setHashAlgorithm(hashAlgorithm); setChainingMode(chainingMode); setSpinCount(SPIN_COUNT); verifierHashSize = hashAlgorithm.hashSize; } protected StandardEncryptionVerifier(StandardEncryptionVerifier other) { super(other); verifierHashSize = other.verifierHashSize; } // make method visible for this package @Override public void setSalt(byte[] salt) { if (salt == null || salt.length != 16) { throw new EncryptedDocumentException("invalid verifier salt"); } super.setSalt(salt); } // make method visible for this package @Override public void setEncryptedVerifier(byte[] encryptedVerifier) { super.setEncryptedVerifier(encryptedVerifier); } // make method visible for this package @Override public void setEncryptedVerifierHash(byte[] encryptedVerifierHash) { super.setEncryptedVerifierHash(encryptedVerifierHash); } @Override public void write(LittleEndianByteArrayOutputStream bos) { // see [MS-OFFCRYPTO] - 2.3.4.9 byte[] salt = getSalt(); assert(salt.length == 16); bos.writeInt(salt.length); // salt size bos.write(salt); // The resulting Verifier value MUST be an array of 16 bytes. byte[] encryptedVerifier = getEncryptedVerifier(); assert(encryptedVerifier.length == 16); bos.write(encryptedVerifier); // The number of bytes used by the decrypted Verifier hash is given by // the VerifierHashSize field, which MUST be 20 bos.writeInt(20); // EncryptedVerifierHash: An array of bytes that contains the encrypted form of the hash of // the randomly generated Verifier value. The length of the array MUST be the size of the // encryption block size multiplied by the number of blocks needed to encrypt the hash of the // Verifier. If the encryption algorithm is RC4, the length MUST be 20 bytes. If the encryption // algorithm is AES, the length MUST be 32 bytes. After decrypting the EncryptedVerifierHash // field, only the first VerifierHashSize bytes MUST be used. byte[] encryptedVerifierHash = getEncryptedVerifierHash(); assert(encryptedVerifierHash.length == getCipherAlgorithm().encryptedVerifierHashLength); bos.write(encryptedVerifierHash); } public int getVerifierHashSize() { return verifierHashSize; } @Override public StandardEncryptionVerifier copy() { return new StandardEncryptionVerifier(this); } }
⏎ org/apache/poi/poifs/crypt/standard/StandardEncryptionVerifier.java
Or download all of them as a single archive file:
File name: poi-5.2.3-src.zip File size: 2479830 bytes Release date: 2022-09-09 Download
⇒ What Is poi-ooxml-5.2.3.jar?
⇐ What Is poi-bin-5.2.3-20220909.zip?
2017-04-04, 54050👍, 0💬
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