Collaborate Disseminate
The new Kerberos AS-REQ-requested attack is somewhat different from a normal Kerberoast, in that instead of requesting a Service Ticket (for offline cracking) via a normal TGS-REQ, it’s requested via an AS-REQ, which is normally only used … Continue reading Is the AS-REQ Kerberoast attack on AD a violation of Kerberos RFCs?
In a header you can have—for example—"Authorization: Basic " xor "Authorization: Bearer ".
If I use my Bearer token as Basic, then can this endpoint double as a give me fresh tokens for this access token"?
https://… Continue reading Bearer token in header as Basic token? – Does that violate the RFC6749 spec?
I’am trying to get a feel for Elliptic Curve Cryptography. I wrote a small Python program below to generate key material but I don’t get the same result for y_squared and Q.y^2. I’am using the parameters from 256-Bit Random ECP Group (RFC … Continue reading Elliptic Curve Cryptography Key Verification fails [migrated]
I’am trying to get a feel for Elliptic Curve Cryptography. I wrote a small Python program below to generate key material but I don’t get the same result for y_squared and Q.y^2. I’am using the parameters from 256-Bit Random ECP Group (RFC … Continue reading Elliptic Curve Cryptography Key Verification fails [migrated]
In TLS 1.3 (RFC8446), there are many secrets and keys. As far as I’ve understood, every certificate (usually only the server) has a long term key associated with it which is used with HKDF to generate a temporary key for the certificate ve… Continue reading Permanent Keys/Secrets in TLS 1.3
When one peer is trying to negotiate an ESP SA, it sends a security association (SA) payload to the other peer. This SA payload must contain at least one proposal, suggesting at least one encryption and one integrity transform to use. It m… Continue reading Do IKEv2 ESP proposals really require a unquie SPI per proposal?
I’m implementing the Authorization code flow with PKCE and planning to have my redirect_uri as the backend.
In this case, while making the code to token exchange call (in the backend), I won’t be having information like the clientId and co… Continue reading OAuth2: Is it good practice to store multiple information in state parameter then encrypt it?
This is the architecture I want to follow
Source:
https://stackoverflow.com/questions/73075156/what-exactly-is-redirect-uri-in-google-oauth2-request-for-getting-authorization
I’m using a backend to exchange tokens with the authorization c… Continue reading OAuth2: Is PKCE required if the callback is located in the backend?
I’m trying to understand the effect of empty sets in permittedSubtrees in both, RFC 5280 and RFC 3280. There is something that doesn’t compile in my head.
Scenario:
We have a CA certificate with the following Name Constraints setup:
Permit… Continue reading Name Constraints, empty sets in permitted subtree (RFC 3280 vs RFC 5280)
In my search for a comprehensive list of implemented RFC’s as pertaining to TCP/UDP traffic, I’ve come across RFC 7414 – but it only provides links and only for TCP. Is there any project that either meta-analyzed these, or that has been ma… Continue reading Is there a way to filter RFCs for what would constitute minimum allowed TCP/UDP traffic for functioning of web applications? [closed]