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As it turns out, I needed to encode all the special characters in the 'oauth', i. Stack Overflow for Teams � Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more about Collectives. Learn more about Teams. Ask Question. Asked 7 years, 1 month ago.
Modified 1 year ago. Viewed 97k times. Can anyone offer me a clue? Improve this question. Mark J. Bobak Mark J. Bobak I would not consider it wise to use online generators for this kind of think. After all, you post all the login information plus the secret to the web.
So everyone finding this info e. Ber, not sure what the issue is here. Ok, but without having any idea what server, what username, what password, the type of account, etc Where is there a security threat? The threat is that you're posting a secret key to a third party which violates a dozen of security best practices, nullifies the assumption of the key being "secret" and most likely violates your organization's security policy.
In authentication all the remaining information can be guessed or derived from other sources - for example Referrer header in case of Google - and this is precisely why secrets should be, well, secret. And yes, you are also conveniently sharing the username Example:alice google. Add a comment. Sorted by: Reset to default. Highest score default Trending recent votes count more Date modified newest first Date created oldest first.
Just use any QR code generator as long as it's processing your data locally. Improve this answer. This post inspired me to create a php library for this. Can be found here - github. Alex Alex 3, 2 2 gold badges 30 30 silver badges 30 30 bronze badges.
Take heed of David Thomas' answer below which truly should be a comment here to include issuer and also of gist. This is much safer than using online generators.
Except this approach shows up in plain text via the command history in the Terminal. DanielHallgren you are right. Software implementations of TOTP are subject to interception by malware on the device running the software code generator. For instance, the Cerberus malware for Android now detects and extracts codes from Google Authenticator.
Hardware implementations are subject to visual interception, as most people seem to hang them from badge lanyards. However, the likelihood of two computers reporting the same time at that granularity, and being able to determine that they are that close in sync, is very low. They cannot transmit the time at run-time because of security concerns, which means the IdP must allow for a time window within which the same code is computed. Many implementations also have a larger window on the server, to accommodate time skew between clients and servers and, of course, time for the user to fumble with their phone to retrieve the code.
However, if the authenticator or client and server clocks are out of sync by several minutes, TOTP will almost certainly fail. The criminal simply has to use the code quickly. To ensure these seeds cannot be leaked most implementations do not store the seeds. You cannot leak that which you do not have. However, this means that you cannot configure another generator app with the same seed later, so if you lose the phone with the software code generator you may be locked out of your account.
To prevent this, some providers, like LastPass, store your seeds. This enables you to set up any number of apps that generate the same sequence of token codes. It does, of course, mean that those seeds are at risk of theft. A simpler way to achieve the same thing would be to simply set up multiple apps on multiple devices with the same QR code while you are setting up the first one.
This is where an RP requires an additional authentication step prior to performing a sensitive transaction. For instance, your bank could let you see your balances merely by opening an app that you have previously logged into. It may let you see individual transactions after logging in using a username, password, and TOTP code.
To initiate an external transfer it could require you to present another TOTP code. This would be step-up authentication. The types of claims and the recency of those claims is based on the sensitivity of the transaction.
However, the lack of context for both HOTP and TOTP codes creates a vulnerability that can be exploited by an attacker when they are used for step-up authentication. An attacker could craft a phishing page that pretended to be the bank and entice the user to type a username and password on that page. The bank now requests a TOTP code to log in.
The attacker simply does the same. The victim types the code, the attacker relays it to the bank, and now the attacker is logged in. However, the attacker wants to transfer money out. To do that, they need an additional code. This is simply obtained. All the attacker has to do is tell the victim that the first code was incorrect, to wait 30 seconds for the code to change, and type the next code. This is perfectly normal. Identity providers do this all the time!
While the user waits for the code to change the attacker tees up the transaction. The user then types the code, the attacker relays it to the bank, and the transaction proceeds. The key here is that the user has no way to know why they are receiving the request for the code.
To the user a code used to log in looks exactly the same as a code used for authorizing a transaction. The attackers were hoping, and were correct, that RSA was holding on to the seeds for tokens it sold. Using stolen seed s the attackers were able to generate codes for RSAs customers. With any authenticator where the seed is generated by the vendor you are completely dependent on the vendor ensuring there is no tampering with the seeds during manufacturing, and that those seeds are not stolen after manufacturing.
This is a question that should be asked of every hardware token vendor. Your account will be more secure as a result. If you combine it with a password manager, such as 1Password, that provides additional phishing resistance, and some vigilance of your own, it is a very strong, and convenient security solution that is well suited to most scenarios both in enterprises and for consumers.
Post a Comment. Popular posts from this blog Single Sign-On - September 16, There are two kinds of organizations. The other day I was in a discussion with a number of security leaders about how important identity management is to your security strategy.
Obviously, everyone agreed that identity is very important. SSO does constitute putting all your eggs in one basket. But, that is a good thing. Because you, as a security leader control that basket. You know where it is. You know how it is configured.
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WebBonus marks if anyone can answer this question for Bitstamp as well as Kraken. Official support is likely to be overwhelmed during the present cryptocurrency boom. EDIT: If . WebA tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. WebTap the Enter Code Manually link at the bottom of the screen. Paste the secret key into the Authenticator Key field and tap Add TOTP. Once set up, Bitwarden authenticator will .