The protocol using a single key and separate cipher and MAC is more brittle: it could break catastrophically if you implement it incorrectly. But the chance that you run into practical security issues is minimal.ĭon't change the MAC to CBC-MAC or another MAC based on AES if you use a single key, because that could make your scheme vulnerable to attack. If you use HMAC with a single key then you probably cannot prove that it is secure. Strong Copyleft License, Build available. kandi ratings - Low support, No Bugs, No Vulnerabilities. Thats why more than 40 million users from around the world rely on MOVEit from Ipswitch File.
You could use a mode of authenticated encryption such as AES-GCM. Implement cryptomator-linux with how-to, Q&A, fixes, code snippets. Exchanging files over the Internet shouldnt be complicated. Or you can generate a separate IV: your choice.
Use promo code 'CRYPTORADAR' to get 10 for free if you invest at least 100. Choose from many fiat payment options such as VISA / Mastercard and trade more than 350 cryptocurrencies. You probably don't need to extract an IV if the salt is always different (because the derived keys would then also always be different). Kriptomat is an EU-based and licensed exchange and wallet service that offers a simple way to buy, sell and store crypto. This is also present in the answer of Codes that you linked to.Īnother trick is to extract 256 bits of output from PBKDF2 and then split that into two 128 bit keys (or two 256 bit keys for PBKDF2 with HMAC/SHA-512). You can just use two different labels (identifiers) for the two keys - if two keys are needed. Using HKDF or any other KDF over the output of PBKDF2 is sufficient and much more efficient. Performing PBKDF2 twice or for more output than the hash delivers will double the amount of work you have to do while an attacker has to perform the 50K operations only once (per try). SIMPLICITY Cryptomator has been developed with a strong focus on user-friendliness. Even if a third party gained unauthorized access to your files (e.g., hacker attack), your files are secure from prying eyes. The app encrypts files on your mobile device before they are uploaded to your cloud. This looks like the case for your scheme. Cryptomator makes your cloud storage trustworthy.
That's bad, especially if that is done by using a password derivation twice. EASY-TO-USE Cryptomator is a simple tool for digital self-defense. Afterwards you upload them protected to your favorite cloud service. Cryptomator encrypts your data quickly and easily. the various text encodings of bcrypt store the salt next to the hash (which has the same security consequences as storing it next to the ciphertext).Īnd using two salts implies deriving the key multiple times. With Cryptomator, the key to your data is in your hands.
Yes, that's the definition of a salt, a salt is public (otherwise it is commonly called a pepper). It should as safe as the boxcryptor encryption when I store the salts for the key derivation (for MAC & content) in the ciphertext, is it?