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FAQ

Is 256 bit SSL encryption technology safe for credit cards?
Yes 256-bit encryption is considered as the Perfect SSL Encryption Today. Recently SSL Industry has adopted many changes; Researchers found 128-bit encryption with SHA-1 algorithm is not much safe today and it seemed easy for attackers to break it. So They have decided to replace 128-bit encryption with its advanced and more secured 256-bit encryption. So Today 128-Bit encryption it globally replaced by 256-bit encryption; Leading web browsers (Chrome Firefox Safari IE Opera etc) Operating Systems (Microsoft MAC OS X Linux etc) Mobile Platforms (Android iOS etc..) has now adopted 256-bit encryption with SHA-2 algorithm as their primary encryption. Read More About - How SHA2 Encryption improved Web Security?
What is the best program or method to encrypt individual files and folders on Mac OS X?
When files are encrypted s they're unusable unless they can be decrypted which is usually only possible with specific software and knowledge of the same password used for encryption. You might encrypt your files if you keep sensitive information that you need to keep private. Maybe you have critical bank information or tax documents or photos and other documents that if stolen could end in identity theft or other problems. The great news is that Apple has already provided you the built-in s password protected folders and files feature on OS X - Disk Utility. To start this file encryption function on Mac s we need to start Disk Utility. Use spotlight and search disk utility if you don't know where it is. Disk Utility will ask you to select a folder. Choose the folder you want to encrypt enter a name for it and select 256 AES encryption . Your selected file will be saved as a .dmg file.
How safe is Windscribe software?
Windscribe is highly secure and safe. You can download Windscribe for Windows Mac Linux and browser extensions for Chrome Firefox and Opera. Windscribe apps for Android iOS and Blackberry are available too. Windscribe uses the safest OpenVPN protocol and strongest AES 256-bit encryption. This shows that Windscribe uses that most advanced technology and that you can safely use its software.
What is the easiest way to transfer big files between two laptops?
Thank you everyone for your fantastic answers. The easiest and fastest way to send information between twoputers is via a USB If theputers are not located in the same geographical area this option may not be possible or very expensive (drive shipping). If youre looking for a strictly software alternative check out Binfer! Disclaimer italic I work for thispany and use the product every day. italic I previously answered this question here ( What free software exists to directly sync files between twoputers via the Internet? question qid 1431297 ) but Ill copy it here for your convenience. Binfer is a cloudless file transfer software that allows you to share files between devices without the data being stored or replicated on any 3rd party systems. Binfer is italic faster than cloud based file transfers italic since only you and the recipient (in this case your otherputer) possess the file thus coupling the upload and download times! italic All file transfers are encrypted on transit with 256 bit encryption it is up to you how you encrypt it at rest. All keys are owned by you and not even Binfer can crack the code since we never touch your data. This is what Binfer Sync looks like You can read more about Binfer Sync here ( Cloudless File Synchronization Sharing & Backup s ) which may solve your replication problems. Off the top of my head you would install Binfer on bothputers then set up a rule that would synchronize the specified folder across the twoputers. Plus You can find us in the App store here ( Binfer on the Mac App Store s )! If this helps you out don't forget to throw me an Upvote ). If you or anyone else has any questions feel free to throw in ament. Cheers! Use code QUORA1 for a free 1GB license! (The code is applied in the app under Settings Licenses)! italic
How secure are AES-256 encrypted files?
As many point out AES is only as safe as the password. If you have a sufficiently long password it can not be remembered and must be stored which then provides new of weakness. At the end of the day even with a password there is still a key stored somewhere or that can be generated with the password that is only 256 bits 32 bytes in length. Stealing the key or the long pass phrase now bes the issue. If the key password or passphrase is on the same device mon) it kind of like leaving your keys in your car and hoping no one steals it. Lastly using a password or phase-phrase reduces theplexity from 2^256 to the number of characters used to generate the phrase. So if we can assume asccii characters and can reduce that to letters numbers and a few special characters we only have 7 or so possibilities not 256 bringing theplexity to roughly 2^7 to guess the passphrasea very responsible number to deal with given today increasedputing power reduced heat output and plummeting power consumption. The important thing to understand is what AES-256 provides a random stream of 32 byte (256 bit) data. Given the reality of that fact AES uses a key(s) that must be stored or calculated from some other data (password) somewhere at some time what is truly perplexing in arguing fore is it easily cracked by lifting the keys; no? You don think the crackers out there doing ransomware can jack public keys or passphrases too? You're kidding yourself. How do you think they breach systems in the first place? The real issue is they know exactly where these actual keys are stored in most cases. The reality is anything that uses keys and known algorithms to create entropy are EXTREMELY vulnerable for the aforementioned reasons. What we need to move to is using entropy the world creates for us every day - the ambient temperature measured a pico level or the voltage of a power source measured at an infinitesimal level. These numbers can not be guessed or solved for and are truly random This is real symmetric encryption where the actual key or pad would be as large as the document itself. Why in the world would anyone want to use AES or any other method calculated from a key or passphrase given the glut of storage and band available? Well right now it the only real choice and were being fooled into a sense of security. The use of symmetric encryption for these s of purposes is starting to be explored. Here are somepanies with products and patents that are starting to change the rules Introspective Networks Zendo - secure messaging app that makes it easy to protect your privacy
Is there a way to add a 2048-bit encryption to a folder on a Mac OS?
The only encryption I know of natively on OSX is creating an encrypted disk and then mounting it so technically doesn encrypt per folder but could be used in place of a folder. FileVault can encrypt an entire disk but again is only 128 or 256 bit. This might be a good place to start looking for 3rd party apps netheril96 s
What is a cardinal rule in cryptography?
Like Thomas Schufcrger user 11377388 said the security must be solely in the keys (the Shannon principle Kerckhoffs's principle - Wikipedia s%27s_principle ). Also 1. Never use a cryptosystem of your own design. Not even a professional cryptographer would do this except as an academic effort that might pay off years later after the algorithm had been tested repeatedly by experts. 2. Never implement a cryptosystem of someone else design. This one might seem strange. The reason is that many algorithms are susceptible to a subtle Side-channel attack - Wikipedia s . For example in RSA if modular exponentiation is implemented by a naive square and multiply algorithm information is leaked by the power usage of theputer. Various naive MAC implementations are vulnerable to timing attacks. Widely used cryptographic libraries will have sound implementations that avoid these issues. 3. Make sure the key has the advertised level of entropy. There are many ways in which a 256 bit key (for example) can fail to have 256 bits of entropy. This basically means that the probability distribution youre using to select from the 2^256 math possible keys is not uniform. Some keys are more likely than others. How can this happen? The hardware TRNG could have low entropy at boot time ( How do I ensure there is sufficient entropy on an system at first boot? s ) or the seeding mechanism could do something dumb like use some variation of the time ( Unix time - Wikipedia s ). You might also be using a TRNG that been backdoored ( RdRand - Wikipedia s ). 4. Don reuse a nonce. This kind of thing can happen What happens if a nonce is reused in ChaCha2-Poly135? s 5. If an ephemeral key is supposed to be random make sure it random. This kind of thing can happen DSA requirements for random k value s 6. Use probabilistic encryption ( Probabilistic encryption - Wikipedia s ). 7. Use authenticated encryption. Authenticated encryption - Wikipedia s
What is the best encryption software you know of?
As Bill Brassfield user 23746421 said the encryption software of Linux OS is pretty fly. Look at his article for the s. But I want to add the reason for to those programs and what the thing is that makes them extreme good and safe they are open source. italic And only with source open software you have the freedom and the ability to control if the software does what it claims to do and only that. That there are no hidden sidefeatures that implement third keys hidden back-doors or bad implementations of the underlying algorithms. It from the very beginning clear that security of encryption can only be done if the underlying algorithms are open and the software is controllable on source-level. And with that not only the encryption software has to be open but the whole tool-chain from entering the codes by keyboard down to the driver that writes the bytes to the hard-drive. If anywhere in that chain of Kernel-level tools is just ONE hidden spot it has to raise suspicion. Do you really know that Skype is P2P encrypted? in Germany has 213 discovered that there is the possibility that Microsoft is able to read the chats. Article is in German and I don know if anybody else has discovered please use an automatic translation service to read it yourself. The problem is that the tool-chain and underlying programs as well as the client is not open source. So all closed-source encryption software MUST italic be considered broken by default. Trust italic is no good concept for things like this. Only open source software can provide the maximum level of security that you want. And with that allmercial available encryption software must be considered broken by default and with that snake-oil level security. Proprietary or not isn important it has to be open source. So don use any non-open tool-chain if you want really good encryption. This out-rules most of the software available and while the underlying tool-chain is not safe only a Linux system remains with it program. Faulty code can be generated onpiler-level so this excludes also the whole Visual C++ of Microsoft out of the race and everything produced with it. It easy for them to include some nasty side-effect into their tool-chain that will break every product. Most likely that not the case but still it possible and you have to trust them. Don trust. Everything else is built upon trust. And I don know those people I never visited thosepanies I didn see the source code and never will and if that the same for you don use it. Don trust closed software. The PR agents and web-designers that create trustworthy websites around those products are just professional liars and confidence tricksters. I don want to talk bad of them but the whole idea to praise closed software and swear that you can trust them is wrong and bad and raises every red flag that there is until the Turkey has a white flag for nationality flag left because there no color red left for any other thing in this universe. So don trust. Use open source and only open source. A good and serious page aboutputer security software is HTML and has a paper of the underlying principles of the software included as well as a tarball archive with the source. If you happen to see a Javascript jQuery and Bootstrap bloated page with lot of by-by and professional appearance that might be good for any other field of product (is it?) but in security this raises flags and if for a manufacturer it is more important to be bling than safe then that a message that most likely also for his product. This is very serious. Don trust. A tank isn a nice thing. It not by it pure metal and the seats are bare. Still if someone throws a grenade at you youll prefer the tank and not the Lotus Esprit. In white you know what I mean. The best security youll possibly get is still available for free. And when I see the the top list of encryption software from Lucy Allen user 19785833 posting I just get a very bad feeling my stomach turns and Im beginning to sweat. That no security. Not at all. That are all trust-packages. The price for security is it has to be open. And with that most likely free.
Can you create password protected notes in Evernote?
Yes Saferoom is an app which lets you encrypt Evernote notes it is available on android ios windows and mac From the website Real zero-knowledge encryption. AES-256 bit encryption To protect your data Saferoom uses the AES-256 encryption algorithm with a key length of 256-bit. Currently it is the most secure algorithm in the world which is used for military-grade confidential documents. Zero-Knowledge Encryption Saferoom is apletely client-based application. This means that Saferoom operates only inside the device where it has been installed. Data is encrypted directly inside the device and only leaves the device in an encrypted format. Further in order to give our users zero-knowledge encryption Saferoom keeps the password inside the device. It means that the password cannot be restored . Hence this ensures that you are in absolute control of your data. Data protection Because Saferoom encrypts data directly inside the device any information that is pushed to cloud services stays in an encrypted format. It means that even if a cloud server is breached and information is stolen your data will remain in an encrypted format. Simplicity Our target is to create software that is seamlessly integrated into existing platforms and adds a 'piggy-back' encryption functionality. We want our users to keep their own flow of things to keep their processes and to receive an option to encrypt data they want. Hence our aim is to build Saferoom in a simple form. I know I didn't need to say that but the Quora CollpaseBot made me