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Java Zip4jConstants.ENC_METHOD_AES屬性代碼示例

本文整理匯總了Java中net.lingala.zip4j.util.Zip4jConstants.ENC_METHOD_AES屬性的典型用法代碼示例。如果您正苦於以下問題：Java Zip4jConstants.ENC_METHOD_AES屬性的具體用法？Java Zip4jConstants.ENC_METHOD_AES怎麽用？Java Zip4jConstants.ENC_METHOD_AES使用的例子？那麽, 這裏精選的屬性代碼示例或許可以為您提供幫助。您也可以進一步了解該屬性所在類net.lingala.zip4j.util.Zip4jConstants的用法示例。


在下文中一共展示了Zip4jConstants.ENC_METHOD_AES屬性的6個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: checkParameters

private void checkParameters(ZipParameters parameters) throws ZipException {
	
	if (parameters == null) {
		throw new ZipException("cannot validate zip parameters");
	}
	
	if ((parameters.getCompressionMethod() != Zip4jConstants.COMP_STORE) && 
			parameters.getCompressionMethod() != Zip4jConstants.COMP_DEFLATE) {
		throw new ZipException("unsupported compression type");
	}
	
	if (parameters.getCompressionMethod() == Zip4jConstants.COMP_DEFLATE) {
		if (parameters.getCompressionLevel() < 0 && parameters.getCompressionLevel() > 9) {
			throw new ZipException("invalid compression level. compression level dor deflate should be in the range of 0-9");
		}
	}
	
	if (parameters.isEncryptFiles()) {
		if (parameters.getEncryptionMethod() != Zip4jConstants.ENC_METHOD_STANDARD && 
				parameters.getEncryptionMethod() != Zip4jConstants.ENC_METHOD_AES) {
			throw new ZipException("unsupported encryption method");
		}
		
		if (parameters.getPassword() == null || parameters.getPassword().length <= 0) {
			throw new ZipException("input password is empty or null");
		}
	} else {
		parameters.setAesKeyStrength(-1);
		parameters.setEncryptionMethod(-1);
	}
	
}
開發者ID:joielechong，項目名稱:Zip4jAndroid，代碼行數:32，代碼來源:ZipEngine.java

示例2: checkCRC

public void checkCRC() throws ZipException {
	if (fileHeader != null) {
		if (fileHeader.getEncryptionMethod() == Zip4jConstants.ENC_METHOD_AES) {
			if (decrypter != null && decrypter instanceof AESDecrypter) {
				byte[] tmpMacBytes = ((AESDecrypter)decrypter).getCalculatedAuthenticationBytes();
				byte[] storedMac = ((AESDecrypter)decrypter).getStoredMac();
				byte[] calculatedMac = new byte[InternalZipConstants.AES_AUTH_LENGTH]; 
				
				if (calculatedMac == null || storedMac == null) {
					throw new ZipException("CRC (MAC) check failed for " + fileHeader.getFileName());
				}
				
				System.arraycopy(tmpMacBytes, 0, calculatedMac, 0, InternalZipConstants.AES_AUTH_LENGTH);
				
				if (!Arrays.equals(calculatedMac, storedMac)) {
					throw new ZipException("invalid CRC (MAC) for file: " + fileHeader.getFileName());
				}
			}
		} else {
			long calculatedCRC = crc.getValue() & 0xffffffffL;
			if (calculatedCRC != fileHeader.getCrc32()) {
				String errMsg = "invalid CRC for file: " + fileHeader.getFileName();
				if (localFileHeader.isEncrypted() && 
						localFileHeader.getEncryptionMethod() == Zip4jConstants.ENC_METHOD_STANDARD) {
					errMsg += " - Wrong Password?";
				}
				throw new ZipException(errMsg);
			}
		}
	}
}
開發者ID:joielechong，項目名稱:Zip4jAndroid，代碼行數:31，代碼來源:UnzipEngine.java

示例3: write

public void write(byte[] b, int off, int len) throws IOException {
	if (len == 0) return;
	
	if (zipParameters.isEncryptFiles() && 
			zipParameters.getEncryptionMethod() == Zip4jConstants.ENC_METHOD_AES) {
		if (pendingBufferLength != 0) {
			if (len >= (InternalZipConstants.AES_BLOCK_SIZE - pendingBufferLength)) {
				System.arraycopy(b, off, pendingBuffer, pendingBufferLength,
								(InternalZipConstants.AES_BLOCK_SIZE - pendingBufferLength));
				encryptAndWrite(pendingBuffer, 0, pendingBuffer.length);
				off = (InternalZipConstants.AES_BLOCK_SIZE - pendingBufferLength);
				len = len - off;
				pendingBufferLength = 0;
			} else {
				System.arraycopy(b, off, pendingBuffer, pendingBufferLength,
						len);
				pendingBufferLength += len;
				return;
			}
		}
		if (len != 0 && len % 16 != 0) {
			System.arraycopy(b, (len + off) - (len % 16), pendingBuffer, 0, len % 16);
			pendingBufferLength = len % 16;
			len = len - pendingBufferLength; 
		}
	}
	if (len != 0)
		encryptAndWrite(b, off, len);
}
開發者ID:joielechong，項目名稱:Zip4jAndroid，代碼行數:29，代碼來源:CipherOutputStream.java

示例4: PartInputStream

public PartInputStream(RandomAccessFile raf, long start, long len, UnzipEngine unzipEngine) {
    this.raf = raf;
    this.unzipEngine = unzipEngine;
    this.decrypter = unzipEngine.getDecrypter();
    this.bytesRead = 0;
    this.length = len;
    this.isAESEncryptedFile = unzipEngine.getFileHeader().isEncrypted() && 
		unzipEngine.getFileHeader().getEncryptionMethod() == Zip4jConstants.ENC_METHOD_AES;
}
開發者ID:joielechong，項目名稱:Zip4jAndroid，代碼行數:9，代碼來源:PartInputStream.java

示例5: zip

/**
 * 使用給定密碼壓縮指定文件或文件夾到指定位置.
 * @param srcFiles				要壓縮的文件或文件夾File
 * @param destFile				壓縮文件存放File
 * @param charset				編碼方式
 * @param passwd				密碼
 * @param compressionMethod		壓縮方式【Zip4jConstants類參數】
 * @param compressionLevel		壓縮級別【Zip4jConstants類參數】
 * @param encryptionMethod		加密方式【Zip4jConstants類參數】
 * @throws ZipException
 */
private static void zip(File[] srcFiles,File destFile, String charset,
		String passwd, int compressionMethod, int compressionLevel,
		int encryptionMethod) throws ZipException {
	
	//創建目標文件父級目錄
	FastFile.createParentDirectory(destFile);
	
	ZipParameters parameters = new ZipParameters();
	parameters.setCompressionMethod(compressionMethod); // 壓縮方式
	parameters.setCompressionLevel(compressionLevel); // 壓縮級別
	if (StringUtils.isNotBlank(passwd)) {
		parameters.setEncryptFiles(true);
		parameters.setEncryptionMethod(encryptionMethod); // 加密方式
		
		if(encryptionMethod==Zip4jConstants.ENC_METHOD_AES){//如果加密方式為AES

			parameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);
		}
		
		
		parameters.setPassword(passwd.toCharArray());
	}
	
	ZipFile zipFile = new ZipFile(destFile);
	zipFile.setFileNameCharset(charset);
	
	for(File srcFile : srcFiles){
		if (srcFile.isDirectory()) {
			zipFile.addFolder(srcFile, parameters);
		} else {
			zipFile.addFile(srcFile, parameters);
		}
	}
}
開發者ID:Mr-Po，項目名稱:Fast，代碼行數:45，代碼來源:FastZip.java

示例6: closeEntry

public void closeEntry() throws IOException, ZipException {
	
	if (this.pendingBufferLength != 0) {
		encryptAndWrite(pendingBuffer, 0, pendingBufferLength);
		pendingBufferLength = 0;
	}
	
	if (this.zipParameters.isEncryptFiles() && 
			this.zipParameters.getEncryptionMethod() == Zip4jConstants.ENC_METHOD_AES) {
		if (encrypter instanceof AESEncrpyter) {
			outputStream.write(((AESEncrpyter)encrypter).getFinalMac());
			bytesWrittenForThisFile += 10;
			totalBytesWritten += 10;
		} else {
			throw new ZipException("invalid encrypter for AES encrypted file");
		}
	}
	fileHeader.setCompressedSize(bytesWrittenForThisFile);
	localFileHeader.setCompressedSize(bytesWrittenForThisFile);
	
	if (zipParameters.isSourceExternalStream()) {
		fileHeader.setUncompressedSize(totalBytesRead);
		if (localFileHeader.getUncompressedSize() != totalBytesRead) {
			localFileHeader.setUncompressedSize(totalBytesRead);
		}
	}
	
	long crc32 = crc.getValue();
	if (fileHeader.isEncrypted()) {
		if (fileHeader.getEncryptionMethod() == Zip4jConstants.ENC_METHOD_AES) {
			crc32 = 0;
		}
	}
	
	if (zipParameters.isEncryptFiles() && 
			zipParameters.getEncryptionMethod() == Zip4jConstants.ENC_METHOD_AES) {
		fileHeader.setCrc32(0);
		localFileHeader.setCrc32(0);
	} else {
		fileHeader.setCrc32(crc32);
		localFileHeader.setCrc32(crc32);
	}
	
	zipModel.getLocalFileHeaderList().add(localFileHeader);
	zipModel.getCentralDirectory().getFileHeaders().add(fileHeader);
	
	HeaderWriter headerWriter = new HeaderWriter();
	totalBytesWritten += headerWriter.writeExtendedLocalHeader(localFileHeader, outputStream);
	
	crc.reset();
	bytesWrittenForThisFile = 0;
	encrypter = null;
	totalBytesRead = 0;
}
開發者ID:joielechong，項目名稱:Zip4jAndroid，代碼行數:54，代碼來源:CipherOutputStream.java


注：本文中的net.lingala.zip4j.util.Zip4jConstants.ENC_METHOD_AES屬性示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。