Bug 60320 - issue opening password protected xlsx
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1767399 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andreas Beeker
parent
ce826bc967
commit
457100c358
@ -210,6 +210,7 @@ public class TestAllFiles {
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//EXPECTED_FAILURES.add("poifs/extenxls_pwd123.xlsx");
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//EXPECTED_FAILURES.add("poifs/protected_agile.docx");
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EXPECTED_FAILURES.add("spreadsheet/58616.xlsx");
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EXPECTED_FAILURES.add("poifs/60320-protected.xlsx");
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// TODO: fails XMLExportTest, is this ok?
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EXPECTED_FAILURES.add("spreadsheet/CustomXMLMapping-singleattributenamespace.xlsx");
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@ -16,6 +16,9 @@
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==================================================================== */
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package org.apache.poi.poifs.crypt;
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import org.apache.poi.EncryptedDocumentException;
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import org.apache.poi.util.Removal;
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/**
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* Reads and processes OOXML Encryption Headers
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* The constants are largely based on ZIP constants.
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@ -82,8 +85,19 @@ public abstract class EncryptionHeader implements Cloneable {
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protected void setCipherAlgorithm(CipherAlgorithm cipherAlgorithm) {
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this.cipherAlgorithm = cipherAlgorithm;
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if (cipherAlgorithm.allowedKeySize.length == 1) {
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setKeySize(cipherAlgorithm.defaultKeySize);
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}
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}
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public HashAlgorithm getHashAlgorithm() {
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return hashAlgorithm;
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}
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/**
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* @deprecated POI 3.16 beta 1. use {@link #getHashAlgorithm()}
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*/
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@Removal(version="3.18")
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public HashAlgorithm getHashAlgorithmEx() {
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return hashAlgorithm;
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}
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@ -96,8 +110,21 @@ public abstract class EncryptionHeader implements Cloneable {
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return keyBits;
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}
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/**
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* Sets the keySize (in bits). Before calling this method, make sure
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* to set the cipherAlgorithm, as the amount of keyBits gets validated against
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* the list of allowed keyBits of the corresponding cipherAlgorithm
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*
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* @param keyBits
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*/
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protected void setKeySize(int keyBits) {
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this.keyBits = keyBits;
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for (int allowedBits : getCipherAlgorithm().allowedKeySize) {
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if (allowedBits == keyBits) {
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return;
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}
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}
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throw new EncryptedDocumentException("KeySize "+keyBits+" not allowed for cipher "+getCipherAlgorithm());
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}
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public int getBlockSize() {
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@ -16,6 +16,8 @@
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==================================================================== */
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package org.apache.poi.poifs.crypt;
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import org.apache.poi.util.Removal;
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/**
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* Used when checking if a key is valid for a document
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*/
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@ -48,10 +50,17 @@ public abstract class EncryptionVerifier implements Cloneable {
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return spinCount;
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}
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/**
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* @deprecated POI 3.16 beta 1. use {@link #getChainingMode()}
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*/
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@Removal(version="3.18")
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public int getCipherMode() {
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return chainingMode.ecmaId;
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}
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/**
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* @deprecated POI 3.16 beta 1. use {@link #getCipherAlgorithm()}
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*/
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public int getAlgorithm() {
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return cipherAlgorithm.ecmaId;
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}
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@ -108,7 +108,7 @@ public class StandardEncryptionHeader extends EncryptionHeader implements Encryp
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bos.writeInt(getFlags());
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bos.writeInt(0); // size extra
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bos.writeInt(getCipherAlgorithm().ecmaId);
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bos.writeInt(getHashAlgorithmEx().ecmaId);
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bos.writeInt(getHashAlgorithm().ecmaId);
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bos.writeInt(getKeySize());
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bos.writeInt(getCipherProvider().ecmaId);
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bos.writeInt(0); // reserved1
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@ -56,7 +56,7 @@ public class StandardEncryptionVerifier extends EncryptionVerifier implements En
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setCipherAlgorithm(header.getCipherAlgorithm());
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setChainingMode(header.getChainingMode());
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setEncryptedKey(null);
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setHashAlgorithm(header.getHashAlgorithmEx());
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setHashAlgorithm(header.getHashAlgorithm());
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}
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protected StandardEncryptionVerifier(CipherAlgorithm cipherAlgorithm, HashAlgorithm hashAlgorithm, int keyBits, int blockSize, ChainingMode chainingMode) {
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@ -40,13 +40,13 @@ import javax.crypto.spec.RC2ParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import org.apache.poi.EncryptedDocumentException;
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import org.apache.poi.poifs.crypt.ChainingMode;
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import org.apache.poi.poifs.crypt.ChunkedCipherInputStream;
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import org.apache.poi.poifs.crypt.CipherAlgorithm;
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import org.apache.poi.poifs.crypt.CryptoFunctions;
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import org.apache.poi.poifs.crypt.Decryptor;
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import org.apache.poi.poifs.crypt.EncryptionHeader;
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import org.apache.poi.poifs.crypt.EncryptionInfo;
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import org.apache.poi.poifs.crypt.EncryptionVerifier;
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import org.apache.poi.poifs.crypt.HashAlgorithm;
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import org.apache.poi.poifs.crypt.agile.AgileEncryptionVerifier.AgileCertificateEntry;
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import org.apache.poi.poifs.filesystem.DirectoryNode;
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@ -93,10 +93,8 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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public boolean verifyPassword(String password) throws GeneralSecurityException {
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AgileEncryptionVerifier ver = (AgileEncryptionVerifier)getEncryptionInfo().getVerifier();
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AgileEncryptionHeader header = (AgileEncryptionHeader)getEncryptionInfo().getHeader();
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HashAlgorithm hashAlgo = header.getHashAlgorithmEx();
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CipherAlgorithm cipherAlgo = header.getCipherAlgorithm();
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int blockSize = header.getBlockSize();
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int keySize = header.getKeySize()/8;
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byte[] pwHash = hashPassword(password, ver.getHashAlgorithm(), ver.getSalt(), ver.getSpinCount());
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@ -113,9 +111,9 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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* blockSize bytes.
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* 4. Use base64 to encode the result of step 3.
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*/
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byte verfierInputEnc[] = hashInput(getEncryptionInfo(), pwHash, kVerifierInputBlock, ver.getEncryptedVerifier(), Cipher.DECRYPT_MODE);
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byte verfierInputEnc[] = hashInput(ver, pwHash, kVerifierInputBlock, ver.getEncryptedVerifier(), Cipher.DECRYPT_MODE);
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setVerifier(verfierInputEnc);
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MessageDigest hashMD = getMessageDigest(hashAlgo);
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MessageDigest hashMD = getMessageDigest(ver.getHashAlgorithm());
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byte[] verifierHash = hashMD.digest(verfierInputEnc);
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/**
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@ -130,8 +128,8 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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* blockSize bytes, pad the hash value with 0x00 to an integral multiple of blockSize bytes.
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* 4. Use base64 to encode the result of step 3.
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*/
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byte verifierHashDec[] = hashInput(getEncryptionInfo(), pwHash, kHashedVerifierBlock, ver.getEncryptedVerifierHash(), Cipher.DECRYPT_MODE);
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verifierHashDec = getBlock0(verifierHashDec, hashAlgo.hashSize);
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byte verifierHashDec[] = hashInput(ver, pwHash, kHashedVerifierBlock, ver.getEncryptedVerifierHash(), Cipher.DECRYPT_MODE);
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verifierHashDec = getBlock0(verifierHashDec, ver.getHashAlgorithm().hashSize);
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/**
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* encryptedKeyValue: This attribute MUST be generated by using the following steps:
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@ -146,9 +144,9 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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* blockSize bytes.
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* 4. Use base64 to encode the result of step 3.
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*/
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byte keyspec[] = hashInput(getEncryptionInfo(), pwHash, kCryptoKeyBlock, ver.getEncryptedKey(), Cipher.DECRYPT_MODE);
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keyspec = getBlock0(keyspec, keySize);
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SecretKeySpec secretKey = new SecretKeySpec(keyspec, ver.getCipherAlgorithm().jceId);
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byte keyspec[] = hashInput(ver, pwHash, kCryptoKeyBlock, ver.getEncryptedKey(), Cipher.DECRYPT_MODE);
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keyspec = getBlock0(keyspec, header.getKeySize()/8);
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SecretKeySpec secretKey = new SecretKeySpec(keyspec, header.getCipherAlgorithm().jceId);
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/**
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* 1. Obtain the intermediate key by decrypting the encryptedKeyValue from a KeyEncryptor
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@ -163,10 +161,11 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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* array with 0x00 to the next integral multiple of blockSize bytes.
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* 4. Assign the encryptedHmacKey attribute to the base64-encoded form of the result of step 3.
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*/
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byte vec[] = CryptoFunctions.generateIv(hashAlgo, header.getKeySalt(), kIntegrityKeyBlock, blockSize);
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Cipher cipher = getCipher(secretKey, cipherAlgo, ver.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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byte vec[] = CryptoFunctions.generateIv(header.getHashAlgorithm(), header.getKeySalt(), kIntegrityKeyBlock, blockSize);
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CipherAlgorithm cipherAlgo = header.getCipherAlgorithm();
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Cipher cipher = getCipher(secretKey, cipherAlgo, header.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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byte hmacKey[] = cipher.doFinal(header.getEncryptedHmacKey());
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hmacKey = getBlock0(hmacKey, hashAlgo.hashSize);
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hmacKey = getBlock0(hmacKey, header.getHashAlgorithm().hashSize);
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/**
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* 5. Generate an HMAC, as specified in [RFC2104], of the encrypted form of the data (message),
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@ -177,10 +176,10 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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* 0xa0, 0x67, 0x7f, 0x02, 0xb2, 0x2c, 0x84, and 0x33.
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* 7. Assign the encryptedHmacValue attribute to the base64-encoded form of the result of step 6.
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*/
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vec = CryptoFunctions.generateIv(hashAlgo, header.getKeySalt(), kIntegrityValueBlock, blockSize);
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vec = CryptoFunctions.generateIv(header.getHashAlgorithm(), header.getKeySalt(), kIntegrityValueBlock, blockSize);
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cipher = getCipher(secretKey, cipherAlgo, ver.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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byte hmacValue[] = cipher.doFinal(header.getEncryptedHmacValue());
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hmacValue = getBlock0(hmacValue, hashAlgo.hashSize);
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hmacValue = getBlock0(hmacValue, header.getHashAlgorithm().hashSize);
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if (Arrays.equals(verifierHashDec, verifierHash)) {
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setSecretKey(secretKey);
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@ -206,7 +205,7 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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public boolean verifyPassword(KeyPair keyPair, X509Certificate x509) throws GeneralSecurityException {
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AgileEncryptionVerifier ver = (AgileEncryptionVerifier)getEncryptionInfo().getVerifier();
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AgileEncryptionHeader header = (AgileEncryptionHeader)getEncryptionInfo().getHeader();
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HashAlgorithm hashAlgo = header.getHashAlgorithmEx();
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HashAlgorithm hashAlgo = header.getHashAlgorithm();
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CipherAlgorithm cipherAlgo = header.getCipherAlgorithm();
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int blockSize = header.getBlockSize();
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@ -231,12 +230,12 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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byte certVerifier[] = x509Hmac.doFinal(ace.x509.getEncoded());
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byte vec[] = CryptoFunctions.generateIv(hashAlgo, header.getKeySalt(), kIntegrityKeyBlock, blockSize);
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cipher = getCipher(secretKey, cipherAlgo, ver.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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cipher = getCipher(secretKey, cipherAlgo, header.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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byte hmacKey[] = cipher.doFinal(header.getEncryptedHmacKey());
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hmacKey = getBlock0(hmacKey, hashAlgo.hashSize);
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vec = CryptoFunctions.generateIv(hashAlgo, header.getKeySalt(), kIntegrityValueBlock, blockSize);
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cipher = getCipher(secretKey, cipherAlgo, ver.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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cipher = getCipher(secretKey, cipherAlgo, header.getChainingMode(), vec, Cipher.DECRYPT_MODE);
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byte hmacValue[] = cipher.doFinal(header.getEncryptedHmacValue());
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hmacValue = getBlock0(hmacValue, hashAlgo.hashSize);
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@ -257,18 +256,17 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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return fillSize;
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}
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protected static byte[] hashInput(EncryptionInfo encryptionInfo, byte pwHash[], byte blockKey[], byte inputKey[], int cipherMode) {
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EncryptionVerifier ver = encryptionInfo.getVerifier();
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AgileDecryptor dec = (AgileDecryptor)encryptionInfo.getDecryptor();
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int keySize = dec.getKeySizeInBytes();
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int blockSize = dec.getBlockSizeInBytes();
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/* package */ static byte[] hashInput(AgileEncryptionVerifier ver, byte pwHash[], byte blockKey[], byte inputKey[], int cipherMode) {
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CipherAlgorithm cipherAlgo = ver.getCipherAlgorithm();
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ChainingMode chainMode = ver.getChainingMode();
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int keySize = ver.getKeySize()/8;
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int blockSize = ver.getBlockSize();
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HashAlgorithm hashAlgo = ver.getHashAlgorithm();
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byte[] salt = ver.getSalt();
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byte intermedKey[] = generateKey(pwHash, hashAlgo, blockKey, keySize);
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SecretKey skey = new SecretKeySpec(intermedKey, ver.getCipherAlgorithm().jceId);
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byte[] iv = generateIv(hashAlgo, salt, null, blockSize);
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Cipher cipher = getCipher(skey, ver.getCipherAlgorithm(), ver.getChainingMode(), iv, cipherMode);
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SecretKey skey = new SecretKeySpec(intermedKey, cipherAlgo.jceId);
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byte[] iv = generateIv(hashAlgo, ver.getSalt(), null, blockSize);
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Cipher cipher = getCipher(skey, cipherAlgo, chainMode, iv, cipherMode);
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byte[] hashFinal;
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try {
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@ -281,7 +279,6 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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}
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@Override
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@SuppressWarnings("resource")
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public InputStream getDataStream(DirectoryNode dir) throws IOException, GeneralSecurityException {
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DocumentInputStream dis = dir.createDocumentInputStream(DEFAULT_POIFS_ENTRY);
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_length = dis.readLong();
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@ -307,7 +304,7 @@ public class AgileDecryptor extends Decryptor implements Cloneable {
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byte[] blockKey = new byte[4];
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LittleEndian.putInt(blockKey, 0, block);
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byte[] iv = generateIv(header.getHashAlgorithmEx(), header.getKeySalt(), blockKey, header.getBlockSize());
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byte[] iv = generateIv(header.getHashAlgorithm(), header.getKeySalt(), blockKey, header.getBlockSize());
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AlgorithmParameterSpec aps;
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if (header.getCipherAlgorithm() == CipherAlgorithm.rc2) {
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@ -45,18 +45,18 @@ public class AgileEncryptionHeader extends EncryptionHeader implements Cloneable
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throw new EncryptedDocumentException("Unable to parse keyData");
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}
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setKeySize((int)keyData.getKeyBits());
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setFlags(0);
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setSizeExtra(0);
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setCspName(null);
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setBlockSize(keyData.getBlockSize());
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int keyBits = (int)keyData.getKeyBits();
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CipherAlgorithm ca = CipherAlgorithm.fromXmlId(keyData.getCipherAlgorithm().toString(), keyBits);
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setCipherAlgorithm(ca);
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setCipherProvider(ca.provider);
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setKeySize(keyBits);
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setFlags(0);
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setSizeExtra(0);
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setCspName(null);
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setBlockSize(keyData.getBlockSize());
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switch (keyData.getCipherChaining().intValue()) {
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case STCipherChaining.INT_CHAINING_MODE_CBC:
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setChainingMode(ChainingMode.cbc);
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@ -73,7 +73,7 @@ public class AgileEncryptionHeader extends EncryptionHeader implements Cloneable
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HashAlgorithm ha = HashAlgorithm.fromEcmaId(keyData.getHashAlgorithm().toString());
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setHashAlgorithm(ha);
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if (getHashAlgorithmEx().hashSize != hashSize) {
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if (getHashAlgorithm().hashSize != hashSize) {
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throw new EncryptedDocumentException("Unsupported hash algorithm: " +
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keyData.getHashAlgorithm() + " @ " + hashSize + " bytes");
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}
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@ -21,6 +21,7 @@ import java.security.GeneralSecurityException;
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import java.security.cert.CertificateFactory;
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import java.security.cert.X509Certificate;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.List;
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@ -48,6 +49,8 @@ public class AgileEncryptionVerifier extends EncryptionVerifier implements Clone
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}
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private List<AgileCertificateEntry> certList = new ArrayList<AgileCertificateEntry>();
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private int keyBits = -1;
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private int blockSize = -1;
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public AgileEncryptionVerifier(String descriptor) {
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this(AgileEncryptionInfoBuilder.parseDescriptor(descriptor));
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@ -66,10 +69,14 @@ public class AgileEncryptionVerifier extends EncryptionVerifier implements Clone
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}
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int keyBits = (int)keyData.getKeyBits();
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CipherAlgorithm ca = CipherAlgorithm.fromXmlId(keyData.getCipherAlgorithm().toString(), keyBits);
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setCipherAlgorithm(ca);
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setKeySize(keyBits);
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int blockSize = keyData.getBlockSize();
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setBlockSize(blockSize);
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int hashSize = keyData.getHashSize();
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HashAlgorithm ha = HashAlgorithm.fromEcmaId(keyData.getHashAlgorithm().toString());
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@ -125,6 +132,8 @@ public class AgileEncryptionVerifier extends EncryptionVerifier implements Clone
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setCipherAlgorithm(cipherAlgorithm);
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setHashAlgorithm(hashAlgorithm);
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setChainingMode(chainingMode);
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setKeySize(keyBits);
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setBlockSize(blockSize);
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setSpinCount(100000); // TODO: use parameter
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}
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@ -171,4 +180,60 @@ public class AgileEncryptionVerifier extends EncryptionVerifier implements Clone
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other.certList = new ArrayList<AgileCertificateEntry>(certList);
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return other;
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}
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/**
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* The keysize (in bits) of the verifier data. This usually equals the keysize of the header,
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* but only on a few exceptions, like files generated by Office for Mac, can be
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* different.
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*
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* @return the keysize (in bits) of the verifier.
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*/
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public int getKeySize() {
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return keyBits;
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}
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/**
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* The blockSize (in bytes) of the verifier data.
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* This usually equals the blocksize of the header.
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*
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* @return the blockSize (in bytes) of the verifier,
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*/
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public int getBlockSize() {
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return blockSize;
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}
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/**
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* Sets the keysize (in bits) of the verifier
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*
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* @param keyBits the keysize (in bits)
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*/
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protected void setKeySize(int keyBits) {
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this.keyBits = keyBits;
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for (int allowedBits : getCipherAlgorithm().allowedKeySize) {
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if (allowedBits == keyBits) {
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return;
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}
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}
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throw new EncryptedDocumentException("KeySize "+keyBits+" not allowed for cipher "+getCipherAlgorithm());
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}
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/**
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* Sets the blockSize (in bytes) of the verifier
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*
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* @param blockSize the blockSize (in bytes)
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*/
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protected void setBlockSize(int blockSize) {
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this.blockSize = blockSize;
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}
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@Override
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protected void setCipherAlgorithm(CipherAlgorithm cipherAlgorithm) {
|
||||
super.setCipherAlgorithm(cipherAlgorithm);
|
||||
if (cipherAlgorithm.allowedKeySize.length == 1) {
|
||||
setKeySize(cipherAlgorithm.defaultKeySize);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -86,9 +86,10 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
public void confirmPassword(String password) {
|
||||
// see [MS-OFFCRYPTO] - 2.3.3 EncryptionVerifier
|
||||
Random r = new SecureRandom();
|
||||
int blockSize = getEncryptionInfo().getHeader().getBlockSize();
|
||||
int keySize = getEncryptionInfo().getHeader().getKeySize()/8;
|
||||
int hashSize = getEncryptionInfo().getHeader().getHashAlgorithmEx().hashSize;
|
||||
AgileEncryptionHeader header = (AgileEncryptionHeader)getEncryptionInfo().getHeader();
|
||||
int blockSize = header.getBlockSize();
|
||||
int keySize = header.getKeySize()/8;
|
||||
int hashSize = header.getHashAlgorithm().hashSize;
|
||||
|
||||
byte[] newVerifierSalt = new byte[blockSize]
|
||||
, newVerifier = new byte[blockSize]
|
||||
@ -107,14 +108,14 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
@Override
|
||||
public void confirmPassword(String password, byte keySpec[], byte keySalt[], byte verifier[], byte verifierSalt[], byte integritySalt[]) {
|
||||
AgileEncryptionVerifier ver = (AgileEncryptionVerifier)getEncryptionInfo().getVerifier();
|
||||
ver.setSalt(verifierSalt);
|
||||
AgileEncryptionHeader header = (AgileEncryptionHeader)getEncryptionInfo().getHeader();
|
||||
|
||||
ver.setSalt(verifierSalt);
|
||||
header.setKeySalt(keySalt);
|
||||
HashAlgorithm hashAlgo = ver.getHashAlgorithm();
|
||||
|
||||
int blockSize = header.getBlockSize();
|
||||
|
||||
pwHash = hashPassword(password, hashAlgo, verifierSalt, ver.getSpinCount());
|
||||
pwHash = hashPassword(password, ver.getHashAlgorithm(), verifierSalt, ver.getSpinCount());
|
||||
|
||||
/**
|
||||
* encryptedVerifierHashInput: This attribute MUST be generated by using the following steps:
|
||||
@ -129,7 +130,7 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
* blockSize bytes.
|
||||
* 4. Use base64 to encode the result of step 3.
|
||||
*/
|
||||
byte encryptedVerifier[] = hashInput(getEncryptionInfo(), pwHash, kVerifierInputBlock, verifier, Cipher.ENCRYPT_MODE);
|
||||
byte encryptedVerifier[] = hashInput(ver, pwHash, kVerifierInputBlock, verifier, Cipher.ENCRYPT_MODE);
|
||||
ver.setEncryptedVerifier(encryptedVerifier);
|
||||
|
||||
|
||||
@ -145,9 +146,9 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
* blockSize bytes, pad the hash value with 0x00 to an integral multiple of blockSize bytes.
|
||||
* 4. Use base64 to encode the result of step 3.
|
||||
*/
|
||||
MessageDigest hashMD = getMessageDigest(hashAlgo);
|
||||
MessageDigest hashMD = getMessageDigest(ver.getHashAlgorithm());
|
||||
byte[] hashedVerifier = hashMD.digest(verifier);
|
||||
byte encryptedVerifierHash[] = hashInput(getEncryptionInfo(), pwHash, kHashedVerifierBlock, hashedVerifier, Cipher.ENCRYPT_MODE);
|
||||
byte encryptedVerifierHash[] = hashInput(ver, pwHash, kHashedVerifierBlock, hashedVerifier, Cipher.ENCRYPT_MODE);
|
||||
ver.setEncryptedVerifierHash(encryptedVerifierHash);
|
||||
|
||||
/**
|
||||
@ -163,10 +164,10 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
* blockSize bytes.
|
||||
* 4. Use base64 to encode the result of step 3.
|
||||
*/
|
||||
byte encryptedKey[] = hashInput(getEncryptionInfo(), pwHash, kCryptoKeyBlock, keySpec, Cipher.ENCRYPT_MODE);
|
||||
byte encryptedKey[] = hashInput(ver, pwHash, kCryptoKeyBlock, keySpec, Cipher.ENCRYPT_MODE);
|
||||
ver.setEncryptedKey(encryptedKey);
|
||||
|
||||
SecretKey secretKey = new SecretKeySpec(keySpec, ver.getCipherAlgorithm().jceId);
|
||||
SecretKey secretKey = new SecretKeySpec(keySpec, header.getCipherAlgorithm().jceId);
|
||||
setSecretKey(secretKey);
|
||||
|
||||
/*
|
||||
@ -196,17 +197,17 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
this.integritySalt = integritySalt.clone();
|
||||
|
||||
try {
|
||||
byte vec[] = CryptoFunctions.generateIv(hashAlgo, header.getKeySalt(), kIntegrityKeyBlock, header.getBlockSize());
|
||||
Cipher cipher = getCipher(secretKey, ver.getCipherAlgorithm(), ver.getChainingMode(), vec, Cipher.ENCRYPT_MODE);
|
||||
byte filledSalt[] = getBlock0(this.integritySalt, getNextBlockSize(this.integritySalt.length, blockSize));
|
||||
byte encryptedHmacKey[] = cipher.doFinal(filledSalt);
|
||||
byte vec[] = CryptoFunctions.generateIv(header.getHashAlgorithm(), header.getKeySalt(), kIntegrityKeyBlock, header.getBlockSize());
|
||||
Cipher cipher = getCipher(secretKey, header.getCipherAlgorithm(), header.getChainingMode(), vec, Cipher.ENCRYPT_MODE);
|
||||
byte hmacKey[] = getBlock0(this.integritySalt, getNextBlockSize(this.integritySalt.length, blockSize));
|
||||
byte encryptedHmacKey[] = cipher.doFinal(hmacKey);
|
||||
header.setEncryptedHmacKey(encryptedHmacKey);
|
||||
|
||||
cipher = Cipher.getInstance("RSA");
|
||||
for (AgileCertificateEntry ace : ver.getCertificates()) {
|
||||
cipher.init(Cipher.ENCRYPT_MODE, ace.x509.getPublicKey());
|
||||
ace.encryptedKey = cipher.doFinal(getSecretKey().getEncoded());
|
||||
Mac x509Hmac = CryptoFunctions.getMac(hashAlgo);
|
||||
Mac x509Hmac = CryptoFunctions.getMac(header.getHashAlgorithm());
|
||||
x509Hmac.init(getSecretKey());
|
||||
ace.certVerifier = x509Hmac.doFinal(ace.x509.getEncoded());
|
||||
}
|
||||
@ -236,10 +237,12 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
// as the integrity hmac needs to contain the StreamSize,
|
||||
// it's not possible to calculate it on-the-fly while buffering
|
||||
// TODO: add stream size parameter to getDataStream()
|
||||
AgileEncryptionVerifier ver = (AgileEncryptionVerifier)getEncryptionInfo().getVerifier();
|
||||
HashAlgorithm hashAlgo = ver.getHashAlgorithm();
|
||||
AgileEncryptionHeader header = (AgileEncryptionHeader)getEncryptionInfo().getHeader();
|
||||
int blockSize = header.getBlockSize();
|
||||
HashAlgorithm hashAlgo = header.getHashAlgorithm();
|
||||
Mac integrityMD = CryptoFunctions.getMac(hashAlgo);
|
||||
integrityMD.init(new SecretKeySpec(integritySalt, hashAlgo.jceHmacId));
|
||||
byte hmacKey[] = getBlock0(this.integritySalt, getNextBlockSize(this.integritySalt.length, blockSize));
|
||||
integrityMD.init(new SecretKeySpec(hmacKey, hashAlgo.jceHmacId));
|
||||
|
||||
byte buf[] = new byte[1024];
|
||||
LittleEndian.putLong(buf, 0, oleStreamSize);
|
||||
@ -256,12 +259,10 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
}
|
||||
|
||||
byte hmacValue[] = integrityMD.doFinal();
|
||||
|
||||
AgileEncryptionHeader header = (AgileEncryptionHeader)getEncryptionInfo().getHeader();
|
||||
int blockSize = header.getBlockSize();
|
||||
byte iv[] = CryptoFunctions.generateIv(header.getHashAlgorithmEx(), header.getKeySalt(), kIntegrityValueBlock, blockSize);
|
||||
Cipher cipher = CryptoFunctions.getCipher(getSecretKey(), header.getCipherAlgorithm(), header.getChainingMode(), iv, Cipher.ENCRYPT_MODE);
|
||||
byte hmacValueFilled[] = getBlock0(hmacValue, getNextBlockSize(hmacValue.length, blockSize));
|
||||
|
||||
byte iv[] = CryptoFunctions.generateIv(header.getHashAlgorithm(), header.getKeySalt(), kIntegrityValueBlock, blockSize);
|
||||
Cipher cipher = CryptoFunctions.getCipher(getSecretKey(), header.getCipherAlgorithm(), header.getChainingMode(), iv, Cipher.ENCRYPT_MODE);
|
||||
byte encryptedHmacValue[] = cipher.doFinal(hmacValueFilled);
|
||||
|
||||
header.setEncryptedHmacValue(encryptedHmacValue);
|
||||
@ -288,18 +289,21 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
keyPass.setSpinCount(ver.getSpinCount());
|
||||
|
||||
keyData.setSaltSize(header.getBlockSize());
|
||||
keyPass.setSaltSize(header.getBlockSize());
|
||||
keyPass.setSaltSize(ver.getBlockSize());
|
||||
|
||||
keyData.setBlockSize(header.getBlockSize());
|
||||
keyPass.setBlockSize(header.getBlockSize());
|
||||
keyPass.setBlockSize(ver.getBlockSize());
|
||||
|
||||
keyData.setKeyBits(header.getKeySize());
|
||||
keyPass.setKeyBits(header.getKeySize());
|
||||
keyPass.setKeyBits(ver.getKeySize());
|
||||
|
||||
HashAlgorithm hashAlgo = header.getHashAlgorithmEx();
|
||||
keyData.setHashSize(hashAlgo.hashSize);
|
||||
keyPass.setHashSize(hashAlgo.hashSize);
|
||||
keyData.setHashSize(header.getHashAlgorithm().hashSize);
|
||||
keyPass.setHashSize(ver.getHashAlgorithm().hashSize);
|
||||
|
||||
// header and verifier have to have the same cipher algorithm
|
||||
if (!header.getCipherAlgorithm().xmlId.equals(ver.getCipherAlgorithm().xmlId)) {
|
||||
throw new EncryptedDocumentException("Cipher algorithm of header and verifier have to match");
|
||||
}
|
||||
STCipherAlgorithm.Enum xmlCipherAlgo = STCipherAlgorithm.Enum.forString(header.getCipherAlgorithm().xmlId);
|
||||
if (xmlCipherAlgo == null) {
|
||||
throw new EncryptedDocumentException("CipherAlgorithm "+header.getCipherAlgorithm()+" not supported.");
|
||||
@ -320,12 +324,8 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
throw new EncryptedDocumentException("ChainingMode "+header.getChainingMode()+" not supported.");
|
||||
}
|
||||
|
||||
STHashAlgorithm.Enum xmlHashAlgo = STHashAlgorithm.Enum.forString(hashAlgo.ecmaString);
|
||||
if (xmlHashAlgo == null) {
|
||||
throw new EncryptedDocumentException("HashAlgorithm "+hashAlgo+" not supported.");
|
||||
}
|
||||
keyData.setHashAlgorithm(xmlHashAlgo);
|
||||
keyPass.setHashAlgorithm(xmlHashAlgo);
|
||||
keyData.setHashAlgorithm(mapHashAlgorithm(header.getHashAlgorithm()));
|
||||
keyPass.setHashAlgorithm(mapHashAlgorithm(ver.getHashAlgorithm()));
|
||||
|
||||
keyData.setSaltValue(header.getKeySalt());
|
||||
keyPass.setSaltValue(ver.getSalt());
|
||||
@ -352,6 +352,14 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
|
||||
return ed;
|
||||
}
|
||||
|
||||
private static STHashAlgorithm.Enum mapHashAlgorithm(HashAlgorithm hashAlgo) {
|
||||
STHashAlgorithm.Enum xmlHashAlgo = STHashAlgorithm.Enum.forString(hashAlgo.ecmaString);
|
||||
if (xmlHashAlgo == null) {
|
||||
throw new EncryptedDocumentException("HashAlgorithm "+hashAlgo+" not supported.");
|
||||
}
|
||||
return xmlHashAlgo;
|
||||
}
|
||||
|
||||
protected void marshallEncryptionDocument(EncryptionDocument ed, LittleEndianByteArrayOutputStream os) {
|
||||
XmlOptions xo = new XmlOptions();
|
||||
@ -371,7 +379,7 @@ public class AgileEncryptor extends Encryptor implements Cloneable {
|
||||
try {
|
||||
bos.write("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\r\n".getBytes("UTF-8"));
|
||||
ed.save(bos, xo);
|
||||
os.write(bos.toByteArray());
|
||||
bos.writeTo(os);
|
||||
} catch (IOException e) {
|
||||
throw new EncryptedDocumentException("error marshalling encryption info document", e);
|
||||
}
|
||||
|
||||
@ -37,10 +37,6 @@ import org.apache.poi.util.IOUtils;
|
||||
import org.apache.poi.xssf.XSSFTestDataSamples;
|
||||
import org.junit.Test;
|
||||
|
||||
/**
|
||||
* @author Maxim Valyanskiy
|
||||
* @author Gary King
|
||||
*/
|
||||
public class TestDecryptor {
|
||||
@Test
|
||||
public void passwordVerification() throws IOException, GeneralSecurityException {
|
||||
@ -162,4 +158,22 @@ public class TestDecryptor {
|
||||
//dec.verifyPassword(null);
|
||||
dec.getDataStream(pfs);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void bug60320() throws IOException, GeneralSecurityException {
|
||||
InputStream is = POIDataSamples.getPOIFSInstance().openResourceAsStream("60320-protected.xlsx");
|
||||
POIFSFileSystem fs = new POIFSFileSystem(is);
|
||||
is.close();
|
||||
|
||||
EncryptionInfo info = new EncryptionInfo(fs);
|
||||
|
||||
Decryptor d = Decryptor.getInstance(info);
|
||||
|
||||
boolean b = d.verifyPassword("Test001!!");
|
||||
assertTrue(b);
|
||||
|
||||
zipOk(fs.getRoot(), d);
|
||||
|
||||
fs.close();
|
||||
}
|
||||
}
|
||||
@ -35,7 +35,7 @@ public class TestEncryptionInfo {
|
||||
assertEquals(2, info.getVersionMinor());
|
||||
|
||||
assertEquals(CipherAlgorithm.aes128, info.getHeader().getCipherAlgorithm());
|
||||
assertEquals(HashAlgorithm.sha1, info.getHeader().getHashAlgorithmEx());
|
||||
assertEquals(HashAlgorithm.sha1, info.getHeader().getHashAlgorithm());
|
||||
assertEquals(128, info.getHeader().getKeySize());
|
||||
assertEquals(32, info.getVerifier().getEncryptedVerifierHash().length);
|
||||
assertEquals(CipherProvider.aes, info.getHeader().getCipherProvider());
|
||||
@ -54,7 +54,7 @@ public class TestEncryptionInfo {
|
||||
assertEquals(4, info.getVersionMinor());
|
||||
|
||||
assertEquals(CipherAlgorithm.aes256, info.getHeader().getCipherAlgorithm());
|
||||
assertEquals(HashAlgorithm.sha512, info.getHeader().getHashAlgorithmEx());
|
||||
assertEquals(HashAlgorithm.sha512, info.getHeader().getHashAlgorithm());
|
||||
assertEquals(256, info.getHeader().getKeySize());
|
||||
assertEquals(64, info.getVerifier().getEncryptedVerifierHash().length);
|
||||
assertEquals(CipherProvider.aes, info.getHeader().getCipherProvider());
|
||||
|
||||
@ -36,7 +36,9 @@ import javax.crypto.Cipher;
|
||||
import org.apache.poi.POIDataSamples;
|
||||
import org.apache.poi.openxml4j.opc.ContentTypes;
|
||||
import org.apache.poi.openxml4j.opc.OPCPackage;
|
||||
import org.apache.poi.poifs.crypt.agile.AgileDecryptor;
|
||||
import org.apache.poi.poifs.crypt.agile.AgileEncryptionHeader;
|
||||
import org.apache.poi.poifs.crypt.agile.AgileEncryptionVerifier;
|
||||
import org.apache.poi.poifs.filesystem.DirectoryNode;
|
||||
import org.apache.poi.poifs.filesystem.DocumentNode;
|
||||
import org.apache.poi.poifs.filesystem.Entry;
|
||||
@ -87,7 +89,7 @@ public class TestEncryptor {
|
||||
|
||||
assertArrayEquals(payloadExpected.toByteArray(), payloadActual.toByteArray());
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
public void agileEncryption() throws Exception {
|
||||
int maxKeyLen = Cipher.getMaxAllowedKeyLength("AES");
|
||||
@ -379,4 +381,142 @@ public class TestEncryptor {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* this test simulates the generation of bugs 60320 sample file
|
||||
* as the padding bytes of the EncryptedPackage stream are random or in POIs case PKCS5-padded
|
||||
* one would need to mock those bytes to get the same hmacValues - see diff below
|
||||
*
|
||||
* this use-case is experimental - for the time being the setters of the encryption classes
|
||||
* are spreaded between two packages and are protected - so you would need to violate
|
||||
* the packages rules and provide a helper class in the *poifs.crypt package-namespace.
|
||||
* the default way of defining the encryption settings is via the EncryptionInfo class
|
||||
*/
|
||||
@Test
|
||||
public void bug60320CustomEncrypt() throws Exception {
|
||||
// --- src/java/org/apache/poi/poifs/crypt/ChunkedCipherOutputStream.java (revision 1766745)
|
||||
// +++ src/java/org/apache/poi/poifs/crypt/ChunkedCipherOutputStream.java (working copy)
|
||||
// @@ -208,6 +208,13 @@
|
||||
// protected int invokeCipher(int posInChunk, boolean doFinal) throws GeneralSecurityException {
|
||||
// byte plain[] = (_plainByteFlags.isEmpty()) ? null : _chunk.clone();
|
||||
//
|
||||
// + if (posInChunk < 4096) {
|
||||
// + _cipher.update(_chunk, 0, posInChunk, _chunk);
|
||||
// + byte bla[] = { (byte)0x7A,(byte)0x0F,(byte)0x27,(byte)0xF0,(byte)0x17,(byte)0x6E,(byte)0x77,(byte)0x05,(byte)0xB9,(byte)0xDA,(byte)0x49,(byte)0xF9,(byte)0xD7,(byte)0x8E,(byte)0x03,(byte)0x1D };
|
||||
// + System.arraycopy(bla, 0, _chunk, posInChunk-2, bla.length);
|
||||
// + return posInChunk-2+bla.length;
|
||||
// + }
|
||||
// +
|
||||
// int ciLen = (doFinal)
|
||||
// ? _cipher.doFinal(_chunk, 0, posInChunk, _chunk)
|
||||
// : _cipher.update(_chunk, 0, posInChunk, _chunk);
|
||||
//
|
||||
// --- src/ooxml/java/org/apache/poi/poifs/crypt/agile/AgileDecryptor.java (revision 1766745)
|
||||
// +++ src/ooxml/java/org/apache/poi/poifs/crypt/agile/AgileDecryptor.java (working copy)
|
||||
//
|
||||
// @@ -300,7 +297,7 @@
|
||||
// protected static Cipher initCipherForBlock(Cipher existing, int block, boolean lastChunk, EncryptionInfo encryptionInfo, SecretKey skey, int encryptionMode)
|
||||
// throws GeneralSecurityException {
|
||||
// EncryptionHeader header = encryptionInfo.getHeader();
|
||||
// - String padding = (lastChunk ? "PKCS5Padding" : "NoPadding");
|
||||
// + String padding = "NoPadding"; // (lastChunk ? "PKCS5Padding" : "NoPadding");
|
||||
// if (existing == null || !existing.getAlgorithm().endsWith(padding)) {
|
||||
// existing = getCipher(skey, header.getCipherAlgorithm(), header.getChainingMode(), header.getKeySalt(), encryptionMode, padding);
|
||||
// }
|
||||
|
||||
InputStream is = POIDataSamples.getPOIFSInstance().openResourceAsStream("60320-protected.xlsx");
|
||||
POIFSFileSystem fsOrig = new POIFSFileSystem(is);
|
||||
is.close();
|
||||
EncryptionInfo infoOrig = new EncryptionInfo(fsOrig);
|
||||
Decryptor decOrig = infoOrig.getDecryptor();
|
||||
boolean b = decOrig.verifyPassword("Test001!!");
|
||||
assertTrue(b);
|
||||
InputStream decIn = decOrig.getDataStream(fsOrig);
|
||||
byte[] zipInput = IOUtils.toByteArray(decIn);
|
||||
decIn.close();
|
||||
|
||||
InputStream epOrig = fsOrig.getRoot().createDocumentInputStream("EncryptedPackage");
|
||||
// ignore the 16 padding bytes
|
||||
byte[] epOrigBytes = IOUtils.toByteArray(epOrig, 9400);
|
||||
epOrig.close();
|
||||
|
||||
EncryptionInfo eiNew = new EncryptionInfo(EncryptionMode.agile);
|
||||
AgileEncryptionHeader aehHeader = (AgileEncryptionHeader)eiNew.getHeader();
|
||||
aehHeader.setCipherAlgorithm(CipherAlgorithm.aes128);
|
||||
aehHeader.setHashAlgorithm(HashAlgorithm.sha1);
|
||||
AgileEncryptionVerifier aehVerifier = (AgileEncryptionVerifier)eiNew.getVerifier();
|
||||
|
||||
// this cast might look strange - if the setters would be public, it will become obsolete
|
||||
// see http://stackoverflow.com/questions/5637650/overriding-protected-methods-in-java
|
||||
((EncryptionVerifier)aehVerifier).setCipherAlgorithm(CipherAlgorithm.aes256);
|
||||
aehVerifier.setHashAlgorithm(HashAlgorithm.sha512);
|
||||
|
||||
Encryptor enc = eiNew.getEncryptor();
|
||||
enc.confirmPassword("Test001!!",
|
||||
infoOrig.getDecryptor().getSecretKey().getEncoded(),
|
||||
infoOrig.getHeader().getKeySalt(),
|
||||
infoOrig.getDecryptor().getVerifier(),
|
||||
infoOrig.getVerifier().getSalt(),
|
||||
infoOrig.getDecryptor().getIntegrityHmacKey()
|
||||
);
|
||||
NPOIFSFileSystem fsNew = new NPOIFSFileSystem();
|
||||
OutputStream os = enc.getDataStream(fsNew);
|
||||
os.write(zipInput);
|
||||
os.close();
|
||||
|
||||
ByteArrayOutputStream bos = new ByteArrayOutputStream();
|
||||
fsNew.writeFilesystem(bos);
|
||||
fsNew.close();
|
||||
|
||||
NPOIFSFileSystem fsReload = new NPOIFSFileSystem(new ByteArrayInputStream(bos.toByteArray()));
|
||||
InputStream epReload = fsReload.getRoot().createDocumentInputStream("EncryptedPackage");
|
||||
byte[] epNewBytes = IOUtils.toByteArray(epReload, 9400);
|
||||
epReload.close();
|
||||
|
||||
assertArrayEquals(epOrigBytes, epNewBytes);
|
||||
|
||||
EncryptionInfo infoReload = new EncryptionInfo(fsOrig);
|
||||
Decryptor decReload = infoReload.getDecryptor();
|
||||
b = decReload.verifyPassword("Test001!!");
|
||||
assertTrue(b);
|
||||
|
||||
AgileEncryptionHeader aehOrig = (AgileEncryptionHeader)infoOrig.getHeader();
|
||||
AgileEncryptionHeader aehReload = (AgileEncryptionHeader)infoReload.getHeader();
|
||||
assertEquals(aehOrig.getBlockSize(), aehReload.getBlockSize());
|
||||
assertEquals(aehOrig.getChainingMode(), aehReload.getChainingMode());
|
||||
assertEquals(aehOrig.getCipherAlgorithm(), aehReload.getCipherAlgorithm());
|
||||
assertEquals(aehOrig.getCipherProvider(), aehReload.getCipherProvider());
|
||||
assertEquals(aehOrig.getCspName(), aehReload.getCspName());
|
||||
assertArrayEquals(aehOrig.getEncryptedHmacKey(), aehReload.getEncryptedHmacKey());
|
||||
// this only works, when the paddings are mocked to be the same ...
|
||||
// assertArrayEquals(aehOrig.getEncryptedHmacValue(), aehReload.getEncryptedHmacValue());
|
||||
assertEquals(aehOrig.getFlags(), aehReload.getFlags());
|
||||
assertEquals(aehOrig.getHashAlgorithm(), aehReload.getHashAlgorithm());
|
||||
assertArrayEquals(aehOrig.getKeySalt(), aehReload.getKeySalt());
|
||||
assertEquals(aehOrig.getKeySize(), aehReload.getKeySize());
|
||||
|
||||
AgileEncryptionVerifier aevOrig = (AgileEncryptionVerifier)infoOrig.getVerifier();
|
||||
AgileEncryptionVerifier aevReload = (AgileEncryptionVerifier)infoReload.getVerifier();
|
||||
assertEquals(aevOrig.getBlockSize(), aevReload.getBlockSize());
|
||||
assertEquals(aevOrig.getChainingMode(), aevReload.getChainingMode());
|
||||
assertEquals(aevOrig.getCipherAlgorithm(), aevReload.getCipherAlgorithm());
|
||||
assertArrayEquals(aevOrig.getEncryptedKey(), aevReload.getEncryptedKey());
|
||||
assertArrayEquals(aevOrig.getEncryptedVerifier(), aevReload.getEncryptedVerifier());
|
||||
assertArrayEquals(aevOrig.getEncryptedVerifierHash(), aevReload.getEncryptedVerifierHash());
|
||||
assertEquals(aevOrig.getHashAlgorithm(), aevReload.getHashAlgorithm());
|
||||
assertEquals(aevOrig.getKeySize(), aevReload.getKeySize());
|
||||
assertArrayEquals(aevOrig.getSalt(), aevReload.getSalt());
|
||||
assertEquals(aevOrig.getSpinCount(), aevReload.getSpinCount());
|
||||
|
||||
AgileDecryptor adOrig = (AgileDecryptor)infoOrig.getDecryptor();
|
||||
AgileDecryptor adReload = (AgileDecryptor)infoReload.getDecryptor();
|
||||
|
||||
assertArrayEquals(adOrig.getIntegrityHmacKey(), adReload.getIntegrityHmacKey());
|
||||
// doesn't work without mocking ... see above
|
||||
// assertArrayEquals(adOrig.getIntegrityHmacValue(), adReload.getIntegrityHmacValue());
|
||||
assertArrayEquals(adOrig.getSecretKey().getEncoded(), adReload.getSecretKey().getEncoded());
|
||||
assertArrayEquals(adOrig.getVerifier(), adReload.getVerifier());
|
||||
|
||||
fsReload.close();
|
||||
}
|
||||
}
|
||||
|
||||
BIN
test-data/poifs/60320-protected.xlsx
Normal file
BIN
test-data/poifs/60320-protected.xlsx
Normal file
Binary file not shown.
Loading…
Reference in New Issue
Block a user