Collaborate Disseminate
According to KMIP user’s guide, when a client application desires to retrieve a 512 bits AES-XTS key, it should request 2 separate KMIP keys of 256 bits each. This is to support the structure of an AES-XTS key, which consists of two keys: … Continue reading Why does KMIP require to request two keys for AES-XTS?
recently I had a look at the capabilities of the Java keytool to create PKCS#12 containers with a protected private key. According to the standard a private key is protected using a PKCS#8 shrouded key bag applying a PKCS#5 password-based … Continue reading Specification of AES-based PKCS#5 Password-Based Encryption (PBE)
I noticed that 7zip provides an option to encrypt the contents of a folder using AES256 (Screenshot Below) and so does GPG using this command:
gpgtar –output <Name_Of_The_Output_File> -v –encrypt –symmetric –gpg-args "–ciph… Continue reading AES256 – 7zip Vs GPG
We provide web redirection based integration with our partners’ web apps. The flow is something like the following, and the password is generated randomly and shared with them during the onboarding process and before any interaction can ta… Continue reading Use pre-computed PBKDF2 key with high iteration count as password
I’ve encrypted a login using BitWarden and have looked at the string that the password is encrypted to and I’m trying to make sense of it. BitWarden is open-source and I’ve been trying to look through the code and can see that it uses AES-… Continue reading Breaking apart string produced from AES-256-CBC encryption
I know about key derivation functions such as PBKDF2 which derive keys from passwords.
That said, I am having hard time wrapping my mind around how AES-256 keys are generated using hardware random number generators.
From Wikipedia:
In com… Continue reading How are AES-256 keys generated using hardware random number generator?
I know about key derivation functions such as PBKDF2 which derive keys from passwords.
Am I wrong in assuming AES-256 keys are essentially unsigned integers between 0 and 2^256-1 padded with zeros?
I plan to encrypt and decrypt a lot high quality images in base64 to only 1 file with aes 256 then rendering it to the client app in an acceptable responsing time and wondering if it is practical to do it all in a today-average computer?
… Continue reading AES256 encryption, decryption time taking?
My plan is to convert a passphrase in UTF-8 ASCII-US to Unit8Array(32) then use it in:
256bitsKey = Unit8Array(32) from passphase
iv = window.crypto.getRandomValues(new Uint8Array(32));
CryptoJS.enc.encrypt(data, 256bitsKey , {iv: iv});
… Continue reading How to convert passphrase to AES256 key?
It is not so difficult to create a password which is exactly 32 characters long.
In this question – AES-256 Key Length Importance @Marc writes:
you absolutely should not be using a password as the raw key
..and in this one @Filip_Franik … Continue reading AES-256 without key stretching