Provide a way for an admin to configure the number of minimum KDF iterations for users within an organization. With the warning of ### WARNING. This is equivalent to the effect of increasing your master password entropy by 2 bits, because log2(2000000/500000) = log2(4) = 2. Exploring applying this as the minimum KDF to all users. 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. Great additional feature for encrypted exports. I have created basic scrypt support for Bitwarden. The point of argon2 is to make low entropy master passwords hard to crack. Code Contributions (Archived) pr-inprogress. 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. My account was set to 100000 by default!! To change it log into your WebUI and go to Account > Security > Keys. One thing I would like an opinion on: the current PBKDF only needs an Iteration count, and sends this via tha API / stores it. (and answer) is fairly old, but BitWarden. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on slower or older devices. htt. Also make sure this is done automatically through client/website for existing users (after they are logged in) to enforce that minimum. Instead of KDF iterations, there is a “Work Factor” which scales linearly with memory and compute. Bitwarden Password Manager will soon support Argon2 KDF. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. Exploring applying this as the minimum KDF to all users. 4. 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. Higher KDF iterations can help protect your master password from being brute forced by an attacker. The recent LastPass breach has put a lot of focus on the number of PBKDF2 hash iterations used to derive the decryption key for the password vault. The user probably wouldn’t even notice. 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. OK, so now your Master Password works again?. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on devices with slower CPUs. The point of argon2 is to make low entropy master passwords hard to crack. 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. Then edit Line 481 of the HTML file — change the third argument. log file is updated only after a successful login. 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. json: csp should be "extension page*s*", and add wasm-unsafe-eval so we can load the wasm. With the warning of ### WARNING. Higher KDF iterations can help protect your master password from being brute forced by an attacker. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. json: csp should be "extension page*s*", and add wasm-unsafe-eval so we can load the wasm. 2. Now I know I know my username/password for the BitWarden. Okay. While you are at it, you may want to consider changing the KDF algorithm to Argon2id. log file is updated only after a successful login. 1. If you want to avoid feelings of inadequacy when Bitwarden ups the default iterations to 600,000 in a month or two, you can go ahead and increase your KDF iteration value to 600k. Feature function Allows admins to configure their organizations to comply with change in recommendations over time (as hash compute capabilities increase, so does the need for increasing KDF iterations). 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. Then edit Line 481 of the HTML file — change the third argument. bw-admin (BW Admin) October 28, 2022, 2:30pm 63. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. 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. ), creating a persistent vault backup requires you to periodically create copies of the data. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. 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. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. Among other. Instead of KDF iterations, there is a “Work Factor” which scales linearly with memory and compute. 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). A question: For purposes of risk/benefit analysis, how does the hashing/encryption process differ from what is done in the regular encrypted export?With the ambiguity in some of the Bitwarden staff responses, it is difficult to say at this time what is going on. We are in the process of onboarding an organization and I would like to be able to set a security baseline by having a default KDF iteration count for all accounts on the organization level. Ask the Community. That seems like old advice when retail computers and old phones couldn’t handle high KDF. Among other. Scroll further down the page till you see Password Iterations. rs I noticed the default client KDF iterations is 5000:. Changed my master password into a four random word passphrase. Mobile: The C implementation of argon2 was held up due to troubles building for iOS. I appreciate all your help. The point of argon2 is to make low entropy master passwords hard to crack. 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. Gotta. I went into my web vault and changed it to 1 million (simply added 0). 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. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. 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. 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. 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. Setting your KDF iterations too high could result in poor performance when logging into (and unlocking) Bitwarden on slower or older devices. No, the OWASP advice is 310,000 iterations, period. Due to the recent news with LastPass I decided to update the KDF iterations. log file is updated only after a successful login. Anyways, always increase memory first and iterations second as recommended in the argon2 paper and iterations only afterwards. 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. 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. 1 was failing on the desktop. Ask the Community. 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. Bitwarden will allow you to set this value as low as 5,000 without even warning you. Hit the Show Advanced Settings button. With Bitwarden's default character set, each completely random password adds 5. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. 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. Security expert, Dmitry Chestnykh, had mentioned this problem in 2020 , yet it still remains unresolved. grb January 26, 2023. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. log file is updated only after a successful login. Do beware, Bitwarden puts a limit of 10 iteration rounds because in QA testing, it was unlimited, which lead to a tester having a 30 minute unlock time (1k+ iterations at 1GiB memory). ” From information found on Keypass that tell me IOS requires low settings. Therefore, a rogue server could send a reply for. json exports. There are many reasons errors can occur during login. , BitwardenDecrypt), so there is nothing standing in the way of. Higher KDF iterations can help protect your master password from being brute forced by an attacker. 1 was failing on the desktop. Therefore, a. The user probably. With the warning of ### WARNING. Warning: Setting your KDF. (or even 1 round of SHA1). This means a 13char password with 100,000 iterations is about 2x stronger than a 12char password with 2,000,000 iterations. One thing I would like an opinion on: the current PBKDF only needs an Iteration count, and sends this via tha API / stores it. This is equivalent to the effect of increasing your master password entropy by 2 bits, because log2(2000000/500000) = log2(4) = 2. 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. json file (storing the copy in any. Bitwarden is abiding by these new recommendations, and when you log into the Bitwarden web app you may see a message saying your KDF Iterations setting is too low. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. I think the . When using one of the Desktop apps, the entire encrypted vault (except for attachments) is stored in a file named data. This is equivalent to the effect of increasing your master password entropy by 2 bits, because log2(2000000/500000) = log2(4) = 2. 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. Exploring applying this as the minimum KDF to all users. I just found out that this affects Self-hosted Vaultwarden as well. I think the . log file is updated only after a successful login. 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. Consider Argon2 but it might not help if your. 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. We recommend a value of 600,000 or more. ## Code changes We just inject the stateservice into the export service to get the KDF type and iterations, and write them into the exported json/use them to encrypt. The user probably wouldn’t even notice. 2 Likes. kwe (Kent England) January 11, 2023, 4:54pm 1. 833 bits of. The user probably wouldn’t even notice. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. Exploring applying this as the minimum KDF to all users. 12. It has also changed the minimum count to 100,000, which is actually low considering the recommendation from OWASP. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. 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 keyHash value from the Chrome logs matched using that tool with my old password. Can anybody maybe screenshot (if. I thought it was the box at the top left. Quexten (Bernd Schoolmann) January 20, 2023, 6:59am 20. (The key itself is encrypted with a second key, and that key is password-based. Remember FF 2022. 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. Can anybody maybe screenshot (if. The increase to 600k iterations is the new default for new accounts. If I end up using argon2 would that be safer than PBKDF2 that is. The point of argon2 is to make low entropy master passwords hard to crack. 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. In this case, we recommend to use a relatively low value for the Argon2 memory parameter (64 MB or less, depending on the app and the database size) and a relatively high number of iterations. Hi, as in for the same reason as in Scrypt KDF Support , I decided to add Argon2 support. Bitwarden currently has a default setting of 100,001 iterations client-side with an additional 100,000. LastPass uses the standard PBKDF2 (Password-Based Key Derivation Function 2). 0 release, Bitwarden increased the default number of KDF iterations for accounts using the PBKDF2 algorithm to 600,000, in accordance with. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. Because the contents of this file are expunged if you ever log out (which can happen unexpectedly, if your session expires, if you change. grb January 26, 2023, 3:43am 17. By default, the iteration count in the client is 5,000 but supports up to 2,000,000. Palant said this flaw meant that the security level of Bitwarden is identical to what LastPass had. Bitwarden is abiding by these new recommendations, and when you log into the Bitwarden web app you may see a message saying your KDF Iterations setting is too low. ddejohn: but on logging in again in Chrome. In the thread that you linked, the issue was that OP was running third-party server software that is not a Bitwarden product, and attempting to use a Bitwarden client app to log in to their self-hosted server that was running incompatible software. 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. Instead of KDF iterations, there is a “Work Factor” which scales linearly with memory and compute. 3 KB. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. Hi, as in for the same reason as in Scrypt KDF Support , I decided to add Argon2 support. Exploring applying this as the minimum KDF to all users. Therefore, a rogue server could send a reply for. I increased KDF from 100k to 600k and then did another big jump. In this case, we recommend to use a relatively low value for the Argon2 memory parameter (64 MB or less, depending on the app and the database size) and a relatively high number of iterations. The user probably wouldn’t even notice. I have created basic scrypt support for Bitwarden. It's in rust and is easy to patch to permit a higher kdf max iteration count, and has the added benefit of not costing anything for use of the server. ago. 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. I think the . 1 Like. The amount of KDF parallelism you can use depends on your machine's CPU. I have created basic scrypt support for Bitwarden. Due to the recent news with LastPass I decided to update the KDF iterations. More recently, Bitwarden users raised their voices asking the company to not make the same mistake. If all of your devices can handle it (looking at you, Android), you could just bump up to 2,000,000 and be done second-guessing yourself. 12. ), creating a persistent vault backup requires you to periodically create copies of the data. Bitwarden client applications (web, browser extension, desktop, and. Feb 4, 2023. I have created basic scrypt support for Bitwarden. Bitwarden Community Forums Argon2 KDF Support. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. This is equivalent to the effect of increasing your master password entropy by 2 bits, because log2(2000000/500000) =. log file is updated only after a successful login. Hit the Show Advanced Settings button. 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. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. It’s only similar on the surface. We recommend a value of 600,000 or more. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. With the ambiguity in some of the Bitwarden staff responses, it is difficult to say at this time what is going on. The password manager service had set the default iterations count to 100,000 for new accounts, but many old accounts. Kyle managed to get the iOS build working now,. GitHub - quexten/clients at feature/argon2-kdf. Password Manager. 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. Feature function Allows admins to configure their organizations to comply with. Therefore, a. Click the update button, and LastPass will prompt you to enter your master password. Kyle managed to get the iOS build working now,. 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 Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. I set my PBKDF2 Iterations to 2 million as I like to be on the safe side. 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. 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. Among other. g. No performance issue once the vault is finally unlocked. Bitwarden Community Forums Master pass stopped working after increasing KDF. Can anybody maybe screenshot (if. The number of KDF iterations is cached in your local vault, so none of this applies unless you are logging in to a Bitwarden client. 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. 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. Low KDF iterations. 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. Under “Security”. If that is not insanely low compared to the default then wow. However, the format and encryption algorithm are open source, and there are third-party tools that can decrypt these files (e. Increased default KDF iterations for PBKDF2: New Bitwarden accounts will use 600,000 KDF iterations for PBKDF2, as recommended by OWASP. 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. Your master password is used to derive a master key, using the specified number of. Good to. higher kdf iterations make it harder to brute force your password. 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 operation logs the user out of all accounts in any event so it should be relatively low friction to update the KDF iterations simultaneously. Can anybody maybe screenshot (if. The feature will be opt-in, and should be available on the same page as the. 2 Likes. log file is updated only after a successful login. We recommend a value of 600,000 or more. Hi, I currently host Vaultwarden version 2022. Exploring applying this as the minimum KDF to all users. The point of argon2 is to make low entropy master passwords hard to crack. The user probably wouldn’t even notice. After changing that it logged me off everywhere. We recommend a value of 600,000 or more. After changing that it logged me off everywhere. Dear Community I searched this community and the web in general, but I did not find a solution for my problem yet, no matter what I tried. Exploring applying this as the minimum KDF to all users. Yes and it’s the bitwarden extension client that is failing here. Among other. 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. Low KDF alert: A new alert will appear in the web app when a user's KDF iterations are lower than. The point of argon2 is to make low entropy master passwords hard to crack. If you want to do manual brute-force guesses, go to Bitwarden’s interactive cryptography tool. 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. ”. The user probably wouldn’t even notice. It is recommended to backup your vault before changing your KDF configuration. There's just no option (from BW itself) at all to do this other than to go manually and download each one. Steps To Reproduce Set minimum KDF iteration count to 300. Feature function Allows admins to configure their organizations to comply with change in recommendations over time (as hash compute capabilities increase, so does the need for increasing KDF iterations). Among other. The feature will be opt-in, and should be available on the same page as the password iteration settings in Bitwarden's 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. 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. If a user has a device that does not work well with Argon2 they can use PBKDF2. ddejohn: but on logging in again in Chrome. log file somewhere safe). The point of argon2 is to make low entropy master passwords hard to crack. 9,603. I. 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. This setting is part of the encryption. There are many reasons errors can occur during login. Higher KDF iterations can help protect your master password from being brute forced by an attacker. Bitwarden Increases KDF iterations to 600k for new accounts and double-encrypts data at rest. anjhdtr January 14, 2023, 12:50am 14. The hash credential to login to Bitwarden servers is only 1 PBKDF2 iteration from the vault master key. You can just change the KDF in the. But it will definitely reduce these values. Can anybody maybe screenshot (if. Bitwarden has never crashed, none. The user probably wouldn’t even notice. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. Also, check out. Additionally, there are some other configurable factors for scrypt, which. I think the . Expand to provide an encryption and mac key parts. Generally, Max. 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. Provide a way for an admin to configure the number of minimum KDF iterations for users within an organization. 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. 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. I increased KDF from 100k to 600k and then did another big jump. LastPass uses the standard PBKDF2 (Password-Based Key Derivation Function 2). In contrast, increasing the length of your master password increases the. 1. 000+ in line with OWASP recommendation. Unless there is a threat model under which this could actually be used to break any part of the security. Keep in mind having a strong master password and 2FA is still the most important security aspect than adding additional bits of. The user probably wouldn’t even notice. That seems like old advice when retail computers and old phones couldn’t handle high KDF. Mobile: The C implementation of argon2 was held up due to troubles building for iOS. pub const CLIENT_KDF_ITER_DEFAULT: i32 = 5_000; Was wondering if there was a reason its set so low by default, and if it shouldn't be 100,000 like Bitwarden now uses for their default? Or possibly a configurable option like how PASSWORD_ITERATIONS is. On mobile, I just looked for the C# argon2 implementation with the most stars. log file is updated only after a successful login. (and answer) is fairly old, but BitWarden. 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. Palant said this flaw meant that the security level of Bitwarden is identical to what LastPass had. My account was set to 100000 by default!! To change it log into your WebUI and go to Account > Security > Keys. Exploring applying this as the minimum KDF to all users. Ask the Community. 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). If it does not, that means that you have a cryptographically secure random key, which is wrapped using your password. Note:. 5. Unless there is a threat model under which this could actually be used to break any part of the security. 512 (MB) Second, increase until 0. 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. Check the upper-right corner, and press the down arrow. We recommend a value of 600,000 or more. Also, to cover all the bases, are you sure that what you were using every day to unlock your vault. The user probably wouldn’t even notice. The default parameters provide stronger protection than 600,000 PBKDF2 iterations, and you may get the additional protection without any performance loss. If you don’t have a locked vault on your device and you are logging in, then there is an unauthentication prelogin in which fetches the number of KDF iterations from the server, that part is true. 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 was asked for the master password, entered it and was logged out. 0 (5786) on Google Pixel 5 running Android 13. 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. Went to change my KDF. Bitwarden 2023. Among other. Security Now podcast did a follow-up to the last episode on the LastPass debacle and one of the things that Steve Gibson mentioned is that vault providers need to move away from PBKDF2 and the number of hash iterations to an algorithm that is resistant to GPU attacks. I think the . The user probably wouldn’t even notice. cksapp (Kent) January 24, 2023, 5:23pm 24. 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. When you change the iteration count, you'll be logged out of all clients. 3 KB. 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. Exploring applying this as the minimum KDF to all users. 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's default KDF iterations is actually pretty low, it sits at 5,000 server-side iterations. A small summary of the current state of the pull requests: Desktop/Web: Mostly done, still needs qa testing for all platforms. Also notes in Mastodon thread they are working on Argon2 support. Hey @l0rdraiden see earlier comments, including Encryption suggestions (including Argon2) - #24 by cscharf for more information. Vaultwarden works! More data, on the desktop I downgraded the extension for FF to 2022. Unless there is a threat model under which this could actually be used to break any part of the security. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. Unless there is a threat model under which this could actually be used to break any part of the security. alfonsojon (Jonathan Alfonso) May 4, 2023, 2:46pm 1. 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. Higher KDF iterations can help protect your master password from being brute forced by an attacker. 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. Question about KDF Iterations. Ask the Community Password Manager. 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. The user probably wouldn’t even notice. 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. 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. 0 update changes the number of default KDF iterations to 600,000, you can change it manually too. So I go to log in and it says my password is incorrect. Then edit Line 481 of the HTML file — change the third argument. For scrypt there are audited, and fuzzed libraries such as noble-hashes. By the way, Sends (which I don’t really use) also have 100K fixed pbkdf2. 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. I went into my web vault and changed it to 1 million (simply added 0). With the ambiguity in some of the Bitwarden staff responses, it is difficult to say at this time what is going on.