poi-ooxml/src/test/java/org/apache/poi/poifs/crypt/tests/TestEncryptionInfo.java

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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.poifs.crypt.tests;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.IOException;

import org.apache.poi.POIDataSamples;
import org.apache.poi.poifs.crypt.CipherAlgorithm;
import org.apache.poi.poifs.crypt.CipherProvider;
import org.apache.poi.poifs.crypt.EncryptionInfo;
import org.apache.poi.poifs.crypt.HashAlgorithm;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.junit.jupiter.api.Test;

class TestEncryptionInfo {
    @Test
    void testEncryptionInfo() throws IOException {
        POIFSFileSystem fs = new POIFSFileSystem(POIDataSamples.getPOIFSInstance().openResourceAsStream("protect.xlsx"));

        EncryptionInfo info = new EncryptionInfo(fs);

        assertEquals(3, info.getVersionMajor());
        assertEquals(2, info.getVersionMinor());

        assertEquals(CipherAlgorithm.aes128, info.getHeader().getCipherAlgorithm());
        assertEquals(HashAlgorithm.sha1, info.getHeader().getHashAlgorithm());
        assertEquals(128, info.getHeader().getKeySize());
        assertEquals(32, info.getVerifier().getEncryptedVerifierHash().length);
        assertEquals(CipherProvider.aes, info.getHeader().getCipherProvider());
        assertEquals("Microsoft Enhanced RSA and AES Cryptographic Provider", info.getHeader().getCspName());

        fs.close();
    }

    @Test
    void testEncryptionInfoSHA512() throws Exception {
        POIFSFileSystem fs = new POIFSFileSystem(POIDataSamples.getPOIFSInstance().openResourceAsStream("protected_sha512.xlsx"));

        EncryptionInfo info = new EncryptionInfo(fs);

        assertEquals(4, info.getVersionMajor());
        assertEquals(4, info.getVersionMinor());

        assertEquals(CipherAlgorithm.aes256, info.getHeader().getCipherAlgorithm());
        assertEquals(HashAlgorithm.sha512, info.getHeader().getHashAlgorithm());
        assertEquals(256, info.getHeader().getKeySize());
        assertEquals(64, info.getVerifier().getEncryptedVerifierHash().length);
        assertEquals(CipherProvider.aes, info.getHeader().getCipherProvider());
//        assertEquals("Microsoft Enhanced RSA and AES Cryptographic Provider", info.getHeader().getCspName());

        fs.close();
    }
}