import com.subgraph.orchid.encoders.Base64; //导入依赖的package包/类
public byte[] parseBase64Data() {
	final StringBuilder string = new StringBuilder(getItem());
	switch(string.length() % 4) {
	case 2:
		string.append("==");
		break;
	case 3:
		string.append("=");
		break;
	default:
		break;
	}
	try {
		return Base64.decode(string.toString().getBytes("ISO-8859-1"));
	} catch (UnsupportedEncodingException e) {
		throw new TorException(e);
	}

}
 

import com.subgraph.orchid.encoders.Base64; //导入依赖的package包/类
private HSDescriptorCookie createFromBase64(String b64) {
	if(b64.length() != 22) {
		throw new IllegalArgumentException();
	}
	final byte[] decoded = Base64.decode(b64 + "A=");
	final byte lastByte = decoded[decoded.length - 1];
	final int flag = (lastByte & 0xFF) >> 4;
	final byte[] cookie = new byte[decoded.length - 1];
	System.arraycopy(decoded, 0, cookie, 0, cookie.length);
	switch(flag) {
	case 0:
		return new HSDescriptorCookie(CookieType.COOKIE_BASIC, cookie);
	case 1:
		return new HSDescriptorCookie(CookieType.COOKIE_STEALTH, cookie);
	default:
		throw new TorException("Illegal cookie descriptor with flag value: "+ flag);
	}
}
 

import com.subgraph.orchid.encoders.Base64; //导入依赖的package包/类
public String toBase64(boolean stripTrailingEquals) {
	final String b64 = new String(Base64.encode(digestBytes), Tor.getDefaultCharset());
	if(stripTrailingEquals) {
		return stripTrailingEquals(b64);
	} else {
		return b64;
	}
}
 

import com.subgraph.orchid.encoders.Base64; //导入依赖的package包/类
private ByteBuffer createIntroductionPointBuffer(DocumentObject ob) {
	final byte[] content = Base64.decode(ob.getContent(false));
	if(content[0] == 'i') {
		return ByteBuffer.wrap(content);
	} else {
		try {
			byte[] decrypted = authentication.decryptIntroductionPoints(content);
			return ByteBuffer.wrap(decrypted);
		} catch (HSAuthenticationException e) {
			throw new TorParsingException("Failed to decrypt introduction points: "+ e.getMessage());
		}
	}
}
 

import com.subgraph.orchid.encoders.Base64; //导入依赖的package包/类
static public TorSignature createFromPEMBuffer(String buffer) {
	BufferedReader reader = new BufferedReader(new StringReader(buffer));
	final String header = nextLine(reader);
	if(!(SIGNATURE_BEGIN.equals(header) || ID_SIGNATURE_BEGIN.equals(header)))
		throw new TorParsingException("Did not find expected signature BEGIN header");
	return new TorSignature(Base64.decode(parseBase64Data(reader)), DigestAlgorithm.DIGEST_SHA1);	
}
 

import com.subgraph.orchid.encoders.Base64; //导入依赖的package包/类
private byte[] decodeAsciiArmoredPEM(String pem) {
	final String trimmed = removeDelimiters(pem);
	return Base64.decode(trimmed);
}