Because the contents of this file are expunged if you ever log out (which can happen unexpectedly, if your session expires, if you change. Also, check out. With the ambiguity in some of the Bitwarden staff responses, it is difficult to say at this time what is going on. 5. TBC I’m a new user so I don’t know but this question was asked 2 days ago and the answer was “your encrypted vault data are completely unaffected by a change to the KDF iterations” I was suprised because I thought increasing the PBKDF2 iterations would give a new master key and therefore a new encryption key. We recommend that you. Also, check out this Help article on Low KDF Iterations: and the KDF Iteration FAQ:. ), creating a persistent vault backup requires you to periodically create copies of the data. If your keyHash. Among other. With the warning of ### WARNING. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. One thing I would like an opinion on: the current PBKDF only needs an Iteration count, and sends this via tha API / stores it. If changing your iteration count triggers a re-encryption, then your encryption key is derived from your password. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on slower or older devices. log file somewhere safe). This is equivalent to the effect of increasing your master password entropy by 2 bits, because log2(2000000/500000) = log2(4) = 2. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. Code Contributions (Archived) pr-inprogress. 2 Likes. The try it again with Argon2id, using the minimum settings for memory (16 MiB) and iterations (2. (or even 1 round of SHA1). Great additional feature for encrypted exports. Not sure if this is already on the @Quexten’s and Bitwarden devs’ list of things to do, but I think it would be very helpful to update the Interactive Cryptography Tool to include an implementation of the new Argon2 KDF Support (including the ability for users to test the settings for iterations, memory, and parallelism parameters). 0 release, Bitwarden increased the default number of KDF iterations for accounts using the PBKDF2 algorithm to 600,000, in accordance with updated OWASP guidelines. Al… Doubt it. I don’t think this replaces an. I think PBKDF2 will remain the default for audits and enterprise where FIPS-140 compliance is an expectation. So I go to log in and it says my password is incorrect. More specifically Argon2id. Code Contributions (Archived) pr-inprogress. Exploring applying this as the minimum KDF to all users. Exploring applying this as the minimum KDF to all users. My account was set to 100000 by default!! To change it log into your WebUI and go to Account > Security > Keys. High kdf iterations aren't necessary if your main password is actually strong, though if your phone struggles with 100k iterations it could be very old and you shouldn't be storing passwords on it. That seems like old advice when retail computers and old phones couldn’t handle high KDF. However, what was more sharply criticized was the failure of LastPass to migrate older accounts to their new default, with many older accounts being left at 5,000 iterations and even reports of accounts with the iterations set to as low as 1. AFAIK KDF iterations count only affects vault unlock speed, not the navigation inside the vault once it's unlocked. Higher KDF iterations can help protect your master password from being brute forced by an attacker. 5. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. My understanding is that a strong master password should still be secure even with a low number of KDF iterations, but for a product like a password manager, the bar should probably be higher than that. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. Bitwarden uses AES- CBC 256-bit encryption for your Vault data, and PBKDF2 SHA-256 to derive your encryption key. Question about KDF Iterations. If the KDF iteration count is set too high, some devices may fail to complete the PBKDF2-HMAC-SHA256 calculation because of insufficient computing power — this is more likely to occur on mobile devices and older hardware. ), creating a persistent vault backup requires you to periodically create copies of the data. 1. With the warning of ### WARNING. 995×807 77. Okay. Also notes in Mastodon thread they are working on Argon2 support. 9,603. Can anybody maybe screenshot (if. Security expert, Dmitry Chestnykh, had mentioned this problem in 2020 , yet it still remains unresolved. 0 update changes the number of default KDF iterations to 600,000, you can change it manually too. the threat actors got into the lastpass system by. Additionally, there are some other configurable factors for scrypt,. 833 bits of. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. I had never heard of increasing only in increments of 50k until this thread. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. If that was so important then it should pop up a warning dialog box when you are making a change. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. Unless there is a threat model under which this could actually be used to break any part of the security. More specifically Argon2id. Bitwarden users have always had the option to specify the number of iterations for their account, and 600,000 is now the default value for new accounts. Therefore, a rogue server could send a reply for. Unless there is a threat model under which this could actually be used to break any part of the security. Whats_Next June 11, 2023, 2:17pm 1. The client has to rely on the server to tell it the correct value, and as long as low settings like 5,000 iterations are supported this issue will remain. For scrypt we could get by, by setting the work factor N (which influences both computation and memory) and store this in the KDF Iterations (although ideally a user could configure the other parameters too). 0 update changes the number of default KDF iterations to 600,000, you can change it manually too. Can anybody maybe screenshot (if. I don’t think this replaces an automatic migration or at least global notifications for iterations set below the default, but it is still a good suggestion. 6. 5 million USD. This is equivalent to the effect of increasing your master password entropy by 2 bits, because log2(2000000/500000) = log2(4) = 2. I think the . OK fine. 6. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. For now only memory is configurable, but in a future pull request me might introduce a kdfOptions object, to expose more configuration options (iterations, parallelism) to the user. Not sure if this is already on the @Quexten’s and Bitwarden devs’ list of things to do, but I think it would be very helpful to update the Interactive Cryptography Tool to include an implementation of the new Argon2 KDF Support (including the ability for users to test the settings for iterations, memory, and parallelism parameters). Exploring applying this as the minimum KDF to all users. Not sure if this is already on the @Quexten’s and Bitwarden devs’ list of things to do, but I think it would be very helpful to update the Interactive Cryptography Tool to include an implementation of the new Argon2 KDF Support (including the ability for users to test the settings for iterations, memory, and parallelism parameters). The user probably wouldn’t even notice. For algorithm, I choose PBKDF2 SHA-256 and set my iterations to 500,000. Among other. all new threads here are locked, but replies will still function for the time being. With the ambiguity in some of the Bitwarden staff responses, it is difficult to say at this time what is going on. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. Did either of the two hashes match the stored Master Password Hash (after the server-side PBKDF2-SHA256 iterations were applied), and if so, which one?” This was their response… The hashing process is a little complex, but in a nutshell, the hashed values you provided were determined to not be relevant in this investigation. Vaultwarden works! More data, on the desktop I downgraded the extension for FF to 2022. Instead of KDF iterations, there is a “Work Factor” which scales linearly with memory and compute. This setting is part of the encryption process and everyone that uses Bitwarden needs to update it. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on. json file (storing the copy in any. Generally, Max. As for me I only use Bitwardon on my desktop. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. KeePassium has suggested 32 MiB as a limit for Argon2 on iOS, but I think that Bitwarden’s default setting of 64 MiB should be OK (since they did do some testing before the release, which presumably included some iOS devices). Argon2 Bitwarden defaults - 16. The user probably wouldn’t even notice. Hi all, Attempting to update the KDF iteration number as suggested and saw it stated that “You will need to log back in and complete two-step login setup. Palant said this flaw meant that the security level of Bitwarden is identical to what LastPass had. So I go to log in and it says my password is incorrect. feature/argon2-kdf. 995×807 77. Unless there is a threat model under which this could actually be used to break any part of the security. Because the contents of this file are expunged if you ever log out (which can happen unexpectedly, if your session expires, if you change your master password or KDF iterations, if Bitwarden resets their servers, etc. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. Regarding brute force difficulty, kdf_iterations is currently hard-coded to 100,000, which is the same default for a Bitwarden account and Bitwarden Send. OK fine. What is your KDF iteration set to, in the bitwarden web vault settings? Reply diamondgoal. Since I don't expect that Bitwarden needs to frequently add new KDF's with new parameters, this pull request simply adds 2 integer columns for the memory consumption, and the parallelism of the KDFs. log file gets wiped (in fact, save a copy of the entire . There are many reasons errors can occur during login. Passwords are chosen by the end users. "The default iteration count used with PBKDF2 is 100,001 iterations on the client (client-side iteration count is configurable from your account settings), and then an additional 100,000 iterations when stored on our servers (for a total of 200,001 iterations by. One of the Hacker News commenters suggestions which sounds reasonable is to upgrade the user to the current default KDF iterations upon a change of the master password. I have created basic scrypt support for Bitwarden. Due to the recent news with LastPass I decided to update the KDF iterations. The user probably wouldn’t even notice. Unless there is a threat model under which this could actually be used to break any part of the security. Bitwarden Community Forums Argon2 KDF Support. I'm curious if anyone has any advice or points of reference when it comes to determining how many iterations is 'good enough' when using PBKDF2 (specifically with SHA-256). Bitwarden Community Forums Master pass stopped working after increasing KDF. Among other. Set the KDF iterations box to 600000. More specifically Argon2id. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. I think the . But it will definitely reduce these values. Once you. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on slower or older devices. Exploring applying this as the minimum KDF to all users. Then edit Line 481 of the HTML file — change the third argument. 3 KB. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. This was mentioned as BWN-01-009 in Bitwarden’s 2018 Security Assessment, yet there we are five years later. a_cute_epic_axis • 6 mo. Bitwarden Community Forums Master pass stopped working after increasing KDF. The user probably wouldn’t even notice. While you are at it, you may want to consider changing the KDF algorithm to Argon2id. Vaultwarden works! More data, on the desktop I downgraded the extension for FF to 2022. It has to be a power of 2, and thus I made the user. The easiest way to explain it is that each doubling adds another bit. They need to have an option to export all attachments, and possibly all sends. Instead of KDF iterations, there is a “Work Factor” which scales linearly with memory and compute. Exploring applying this as the minimum KDF to all users. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. The user probably wouldn’t even notice. Therefore, a rogue server could send a reply for. After changing that it logged me off everywhere. Aug 17, 2014. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. For scrypt there are audited, and fuzzed libraries such as noble-hashes. Additionally, there are some other configurable factors for scrypt, which. We recommend a value of 600,000 or more. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. 3 KB. Can anyone share which part of this diagram changes from 100,000 to 2,000,000. The user probably wouldn’t even notice. The point of argon2 is to make low entropy master passwords hard to crack. After being prompted for and using my yubikey, the vault immediately signed out (didn’t get any sort of confirmation). As for me I only use Bitwardon on my desktop. The user probably wouldn’t even notice. We recommend a value of 600,000 or more. Not sure if this is already on the @Quexten’s and Bitwarden devs’ list of things to do, but I think it would be very helpful to update the Interactive Cryptography Tool to include an implementation of the new Argon2 KDF Support (including the ability for users to test the settings for iterations, memory, and parallelism parameters). So, I changed it by 100000 as suggested in the “Encryption key settings” warning. log file is updated only after a successful login. The negative would be if you have a device with insufficient computing power, setting the KDF iterations too high could cause the login process to slow down so much that you are effectively locked out (this is why Bitwarden recommends. Therefore, a. Go to “Account settings”. Each digit adds ~4 bits. Don't worry about changing any of the knobs or dials: just change KDF algorithm completely. For those sticking with PBKDF2 for the KDF, you can use Bitwarden's interactive cryptography tool to test how your browser performs when you increase the number of KDF iterations. Can anybody maybe screenshot (if. 2 Likes. LastPass uses the standard PBKDF2 (Password-Based Key Derivation Function 2). The password manager service had set the default iterations count to 100,000 for new accounts, but many old accounts. I don’t think this replaces an automatic migration or at least global notifications for iterations set below the default, but it is still a good suggestion. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. From this users perspective, it takes too long for this one step when KDF iterations is set to 56. Question about KDF Iterations. OK, so now your Master Password works again?. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. With the warning of ### WARNING. I think the . Regarding password protected exports, the key is generated through pbkdf2 and stretched using hkdf. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. However, what was more sharply criticized was the failure of LastPass to migrate older accounts to their new default, with many older accounts being left at 5,000 iterations and even reports of accounts with the iterations set to as low as 1. 0 (5786) on Google Pixel 5 running Android 13. Therefore, a rogue server could send a reply for. Please keep in mind that for proper cracking rigs with a lot more GPU power the difference between PBKDF2 cracking and Argon2 cracking will be even greater!The KDF iterations increase the cracking time linearly, so 2,000,000 will take four times as long to crack (on average) than 500,000. log file is updated only after a successful login. We recommend a value of 600,000 or more. Then edit Line 481 of the HTML file — change the third argument. Not sure if this is already on the @Quexten’s and Bitwarden devs’ list of things to do, but I think it would be very helpful to update the Interactive Cryptography Tool to include an implementation of the new Argon2 KDF Support (including the ability for users to test the settings for iterations, memory, and parallelism parameters). Amongst other weak points in the attack, LastPass was found to have set the iterations to a low count, which is considered an insecure practice. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. By default, the iteration count in the client is 5,000 but supports up to 2,000,000. Based on the totality of the evidence available to date (as summarized above), my best guess is that the master password hash stored in the cloud database became corrupted when you changed the KDF iterations. Exploring applying this as the minimum KDF to all users. Bitwarden 2023. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. Set minimum KDF iteration count to 300. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. 12. More specifically Argon2id. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on slower or older devices. Unlike a rotation of the account encryption key, your encrypted vault data are completely unaffected by a change to the KDF iterations, so there is no risk involved in continuing to use devices that are still using a deauthorized token (at most, you may get unexpectedly logged out when trying to update a vault item or sync the vault). Is there a way to find out how many KDF iterations are currently being used? The settings page defaults to 100,000 instead of the current value. Ask the Community. I went into my web vault and changed it to 1 million (simply added 0). By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. If I end up using argon2 would that be safer than PBKDF2 that is being used. I myself switched to using bitwarden_rs, which is compatible with the bitwarden clients. Updating KDF Iterations / Encryption Key Settings. The user probably wouldn’t even notice. Exploring applying this as the minimum KDF to all users. Ask the Community Password Manager. Please (temporarily) set your KDF to 100000 iterations of PBKDF2-HMAC-SHA256, then time the unlock delay on your large production vault. 2 Likes. Vaultwarden works! More data, on the desktop I downgraded the extension for FF to 2022. Bitwarden Community Forums Master pass stopped working after increasing KDF. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. On the typescript-based platforms, argon2-browser with WASM is used. I don’t think this replaces an automatic migration or at least global notifications for iterations set below the default, but it is still a good suggestion. Is at least one of your devices a computer with a modern CPU and adequate RAM? Did you increase the KDF iterations gradually, in. htt. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. ddejohn: but on logging in again in Chrome. Code Contributions (Archived) pr-inprogress. Higher KDF iterations can help protect your master password from being brute forced by an attacker. The keyHash value from the Chrome logs matched using that tool with my old password. All around great news and a perfect example of a product built on open source code actively listening to its community! Mastodon Post: Bitwarden Security Enhancements Respect. OK, so now your Master Password works again?. Then edit Line 481 of the HTML file — change the third argument. . This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. Higher KDF iterations can help protect your master password from being brute forced by an attacker. The KDF iterations increase the cracking time linearly, so 2,000,000 will take four times as long to crack (on average) than 500,000. PBKDF2 100. ” From information found on Keypass that tell me IOS requires low settings. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. PBKDF2 default now apparently 600,000 (for new accounts) In addition to having a strong master password, default client iterations are being increased to 600,000 as well as double-encrypting these fields at rest with keys managed in Bitwarden’s key vault (in addition to existing encryption). Theoretically, key rotation is the most dangerous because the vault has to be entirely re-encrypted, unlike the other operations of which the encryption key has to be re. (for a single 32 bit entropy password). By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. Higher KDF iterations can help protect your master password from being brute forced by an attacker. Next, go to this page, and use your browser to save the HTML file (source code) of that page. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. Honestly, the entire vault is heavily encrypted and the encryption key is your master pass, the ability for a hacker or somebody to decrypt your vault would be nearly impossible especially if you have BitWarden setup with all the proper security settings like 2FA and high enough KDF Iterations to prevent brute force. Among other. Exploring applying this as the minimum KDF to all users. Among other. the time required increases linearly with kdf iterations. The point of argon2 is to make low entropy master passwords hard to crack. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. I have created basic scrypt support for Bitwarden. Provide a way for an admin to configure the number of minimum KDF iterations for users within an organization. Yes, you can increase time cost (iterations) here too. Based on the totality of the evidence available to date (as summarized above), my best guess is that the master password hash stored in the cloud database became corrupted when you changed the KDF iterations. 1. json: csp should be "extension page*s*", and add wasm-unsafe-eval so we can load the wasm. Bitwarden currently has a default setting of 100,001 iterations client-side with an additional 100,000. Click on the box, and change the value to 600000. The KDF iterations increase the cracking time linearly, so 2,000,000 will take four times as long to crack (on average) than 500,000. The user probably wouldn’t even notice. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. Changing my “KDF Iterations” in my Vault UI will change the value of client_kdf_iterations. I had never heard of increasing only in increments of 50k until this thread. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. I went into my web vault and changed it to 1 million (simply added 0). Feature function Allows admins to configure their organizations to comply with. Hey @Quexten we’re switching over to Github discussions to keep the PR chats closer to the code. Higher KDF iterations can help protect your master password from being brute forced by an attacker. 10. (and answer) is fairly old, but BitWarden. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. ), creating a persistent vault backup requires you to periodically create copies of the data. Therefore, a rogue server. My understanding is that a strong master password should still be secure even with a low number of KDF iterations, but for a product like a password manager, the bar should probably be higher than that. The user probably wouldn’t even notice. Not sure if this is already on the @Quexten’s and Bitwarden devs’ list of things to do, but I think it would be very helpful to update the Interactive Cryptography Tool to include an implementation of the new Argon2 KDF Support (including the ability for users to test the settings for iterations, memory, and parallelism parameters). The user probably wouldn’t even notice. Instead of KDF iterations, there is a “Work Factor” which scales linearly with memory and compute. A small summary of the current state of the pull requests: Desktop/Web: Mostly done, still needs qa testing for all platforms. In contrast, Dmitry Chestnykh wrote a well-researched piece in 2020 (with an update in January 2023) that describes exactly how a brute-force attack against a stolen Bitwarden vault would be possible using only 100,000 PBKDF2 iterations (or the KDF iteration value set by the user) per password guess, and even proposed an improved authentication. Aug 17, 2014. anjhdtr January 14, 2023, 12:03am 12. Exploring applying this as the minimum KDF to all users. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. The point of argon2 is to make low entropy master passwords hard to crack. It's set to 100100. I’m writing this to warn against setting to large values. json in a location that depends on your installation, as long as you are logged in. Exploring applying this as the minimum KDF to all users. Therefore, a. Iterations (i) = . My account was set to 100000 by default!! To change it log into your WebUI and go to Account > Security > Keys. 1 was failing on the desktop. For scrypt there are audited, and fuzzed libraries such as noble-hashes. app:all, self-hosting. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on slower or older devices. Following the May update, our end users will be prompted that their KDF iterations are not at the recommended 600,000. #1. Learned just now that for some old accounts the iterations in lastpass where set to 1, unbelievable , i set mine in Bitwarden to 1234567 iterations to stay ahead of the moving train called GPU hacking. Addition info from the team, does this sound like the issue: [Android] When account it set to maximum 2,000,000 PBKDF iterations cannot log on · Issue #2295 · bitwarden/mobile · GitHub I changed my KDF from 100k to 300k, so nowhere near that limit, and I am unable to login to the web vault. Bitwarden has also recently added another KDF option called Argon2id, which defends against GPU-based and side-channel attacks by increasing the memory needed to guess a master password input. log file is updated only after a successful login. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. Yes and it’s the bitwarden extension client that is failing here. Bitwarden currently has a default setting of 100,001 iterations client-side with an additional 100,000. Addition info from the team, does this sound like the issue: [Android] When account it set to maximum 2,000,000 PBKDF iterations cannot log on · Issue #2295 · bitwarden/mobile · GitHub I changed my KDF from 100k to 300k, so nowhere near that limit, and I am unable to login to the web vault. Exploring applying this as the minimum KDF to all users. Increasing iterations from the default 64 MB may result in errors while unlocking the vault with autofill. RE: Increasing KDF Iterations… Are there any inherent problems caused by increasing KDF iterations? That is, any risk of losing data, etc. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. Hi, I currently host Vaultwarden version 2022. Change the ** KDF iterations** to 600000 (Six Hundred Thousand) or higher! Keep in mind that this doesn't do you much good however if you have a weak master password. ## Code changes - manifestv3. We recommend that you increase the value in increments of 100,000 and then test all of your devices. End of story. Now I know I know my username/password for the BitWarden. If your passphrase has fewer than 6 words, then the password entropy and KDF work together to secure your vault. 2 Likes. This article describes how to unlock Bitwarden with biometrics and. Bitwarden's default KDF iterations is actually pretty low, it sits at 5,000 server-side iterations. Among other. •. I think the . wasn’t the whole point of logging me out of all my devices to force me to log back in using the new KDF iterations value? grb January 26, 2023, 3:43am 17. However, what was more sharply criticized was the failure of LastPass to migrate older accounts to their new default, with many older accounts being left at 5,000 iterations and even reports of accounts with the iterations set to as low as 1. Bitwarden also uses the PBKDF2 KDF, but as of this writing, with a more secure minimum of 600,000 iterations. We recommend a value of 600,000 or more. On the typescript-based platforms, argon2-browser with WASM is used. Bitwarden currently has a default setting of 100,001 iterations client-side with an additional 100,000. PBKDF2 600. Quexten (Bernd Schoolmann) January 20, 2023, 6:59am 20. (Goes for Luks too). 5s to 3s delay or practical limit. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. If I end up using argon2 would that be safer than PBKDF2 that is. But they don’t even store the kdf / iterations in the database, so changing it would require another database migration / backend change which I didn’t really feel like taking on considering how low the risk for a send is anyways. For comparison KDF iterations: 4 KDF memory (MB): 256 Concurrency KDF: 4 takes about 5 seconds. For now only memory is configurable, but in a future pull request me might introduce a kdfOptions object, to expose more configuration options (iterations, parallelism) to the user. This operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. Unless there is a threat model under which this could actually be used to break any part of the security. It’s only similar on the surface. Anyways, always increase memory first and iterations second as recommended in the argon2. I was asked for the master password, entered it and was logged out. Password Manager. ddejohn: but on logging in again in Chrome. Yes and it’s the bitwarden extension client that is failing here. ago. LastPass had (and still has) many issues, but one issue was allowing low iterations (1 or 500) on their KDF. I have created basic scrypt support for Bitwarden. If your keyHash value is from later than June 9, 2021, you will need to save a copy of the HTML code of this webpage. According to comments posted by Quexten at Bitwarden's community forums, the company has a 5-week release cycle, so we could expect Argon2 support to be added next month on all platforms if the tests are successful. The client has to rely on the server to tell it the correct value, and as long as low settings like 5,000 iterations are supported this issue will remain. Among other. Exploring applying this as the minimum KDF to all users. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. At our organization, we are set to use 100,000 KDF iterations. I can’t remember if I.