DEV Community

kt profile picture
OpenID4VCI Deep Dive: 1.0 Final, the Errata, Interactive Authorization in 1.1, and Server-to-Server

OpenID4VCI Deep Dive: 1.0 Final, the Errata, Interactive Authorization in 1.1, and Server-to-Server

Comments
12 min read

Want to connect with kt?

Create an account to connect with kt. You can also sign in below to proceed if you already have an account.

Already have an account? Sign in
DCHP: One CBOR Request for mdoc and SD-JWT VC, In Person and Online

DCHP: One CBOR Request for mdoc and SD-JWT VC, In Person and Online

Comments
11 min read
Signing What Was in the Context Window: draft-durga-wimse-ctx-isolation and Its Self-Reported Taint

Signing What Was in the Context Window: draft-durga-wimse-ctx-isolation and Its Self-Reported Taint

Comments
10 min read
Zookies Without TrueTime: How SpiceDB, OpenFGA and the Rest Order Their Writes

Zookies Without TrueTime: How SpiceDB, OpenFGA and the Rest Order Their Writes

Comments
13 min read
WIMSE Workload Credentials -03: The WIT Finally Gets a Validation Procedure

WIMSE Workload Credentials -03: The WIT Finally Gets a Validation Procedure

Comments
11 min read
Zanzibar Implementations Compared (Late 2026): SpiceDB, OpenFGA, Permify, Keto, Topaz, Warrant

Zanzibar Implementations Compared (Late 2026): SpiceDB, OpenFGA, Permify, Keto, Topaz, Warrant

Comments
12 min read
SD-JWT VC Deep Dive: vct, Issuer Keys, Type Metadata, and the URLs a Credential Makes You Fetch

SD-JWT VC Deep Dive: vct, Issuer Keys, Type Metadata, and the URLs a Credential Makes You Fetch

Comments
14 min read
WIMSE HTTP Signatures Deep Dive: Proof of Possession That Survives the Load Balancer

WIMSE HTTP Signatures Deep Dive: Proof of Possession That Survives the Load Balancer

Comments
10 min read
identity-deep-dive: A Weekly Briefing and a Sourced Spec Map for OAuth, WIMSE, and OpenID

identity-deep-dive: A Weekly Briefing and a Sourced Spec Map for OAuth, WIMSE, and OpenID

Comments
5 min read
wtfe: Claims About Engineering Culture by Country, Each One Sourced and Rated

wtfe: Claims About Engineering Culture by Country, Each One Sourced and Rated

Comments
4 min read
Lettering Programming Comics in Japanese, Only Where the License Allows It

Lettering Programming Comics in Japanese, Only Where the License Allows It

Comments
5 min read
wtfi3: Who Is Talking to Whom on My WiFi

wtfi3: Who Is Talking to Whom on My WiFi

Comments
4 min read
wtfi2: Find the Hop Where Your Wi-Fi Connection Actually Dies

wtfi2: Find the Hop Where Your Wi-Fi Connection Actually Dies

Comments
4 min read
The Zanzibar Paper, Side by Side With Eight Translations

The Zanzibar Paper, Side by Side With Eight Translations

Comments
3 min read
Why Hackers Don't Get Caught: A Sourced Visual Explainer, Layer by Layer

Why Hackers Don't Get Caught: A Sourced Visual Explainer, Layer by Layer

Comments
5 min read
I Already Had a VHS Tape for Every README GIF. matinee Turns It Into a Narrated Video.

I Already Had a VHS Tape for Every README GIF. matinee Turns It Into a Narrated Video.

Comments
4 min read
whosent: A TUI That Shows Who Sent the Agent

whosent: A TUI That Shows Who Sent the Agent

Comments
5 min read
prpr, a Terminal List of Every Open GitHub Pull Request I Can See

prpr, a Terminal List of Every Open GitHub Pull Request I Can See

Comments
3 min read
I Put Up a php2shell Page Before PHP's Fix Landed. There Is No Exploit on It.

I Put Up a php2shell Page Before PHP's Fix Landed. There Is No Exploit on It.

Comments
4 min read
Disk Viewers Show Sizes. I Wanted One That Says Who Put the Bytes There.

Disk Viewers Show Sizes. I Wanted One That Says Who Put the Bytes There.

Comments
5 min read
trust-me-bro: Reading an Agent Skill Before It Reads Your .env

trust-me-bro: Reading an Agent Skill Before It Reads Your .env

Comments
6 min read
S3 Atlas, Everything I Know About Amazon S3 on One Site

S3 Atlas, Everything I Know About Amazon S3 on One Site

Comments
3 min read
goi: Japanese Words People Know but Rarely Say, Each With Its Sources

goi: Japanese Words People Know but Rarely Say, Each With Its Sources

Comments
3 min read
I Log Every Movie I Watch as a Markdown File, Filed Through GitHub Issues

I Log Every Movie I Watch as a Markdown File, Filed Through GitHub Issues

Comments
4 min read
mcp-opa-authz: Authorization Answers for Coding Agents, from the Policy Instead of a Guess

mcp-opa-authz: Authorization Answers for Coding Agents, from the Policy Instead of a Guess

Comments
5 min read
howbad: What a Prompt-Injected Coding Agent Could Do With the Credentials on Your Machine

howbad: What a Prompt-Injected Coding Agent Could Do With the Credentials on Your Machine

Comments
5 min read
A Repo That Makes Claude Correct My English Instead of Writing It

A Repo That Makes Claude Correct My English Instead of Writing It

Comments
5 min read
aws-credentials: STS and SigV4 as a Site You Can Click Through

aws-credentials: STS and SigV4 as a Site You Can Click Through

Comments
4 min read
a2claude Is Now a2acode: Any ACP Coding Agent Behind A2A

a2claude Is Now a2acode: Any ACP Coding Agent Behind A2A

Comments
5 min read
AWS Connectivity: Every Road From Your Network Into AWS, on One Map

AWS Connectivity: Every Road From Your Network Into AWS, on One Map

Comments
6 min read
ccretro: A Monthly Claude Code Retro That Checks Last Month's Suggestions

ccretro: A Monthly Claude Code Retro That Checks Last Month's Suggestions

Comments
5 min read
What Coding Agents Leave in Public Git Repos

What Coding Agents Leave in Public Git Repos

2
Comments
3 min read
Secret Scanners Look for Credentials. I Wanted One That Looks for Me.

Secret Scanners Look for Credentials. I Wanted One That Looks for Me.

Comments
3 min read
Ransomware in Japan: 61 of 92 Known Entry Points in 2025 Were VPN Appliances

Ransomware in Japan: 61 of 92 Known Entry Points in 2025 Were VPN Appliances

Comments
4 min read
Mandatum: Making an AI Agent's Authority a Chain You Can Verify

Mandatum: Making an AI Agent's Authority a Chain You Can Verify

1
Comments
5 min read
I Made Four Authorization Engines Answer the Same Questions

I Made Four Authorization Engines Answer the Same Questions

1
Comments 1
3 min read
Envoy AI Gateway: A Hands-On Tour You Can Run Before Touching Kubernetes

Envoy AI Gateway: A Hands-On Tour You Can Run Before Touching Kubernetes

Comments
28 min read
Let's Play Shogi: I Turned My GitHub Profile README Into a Playable Board

Let's Play Shogi: I Turned My GitHub Profile README Into a Playable Board

Comments
5 min read
Mapping MCP, A2A, and ACP: Telling AI Agent Protocols Apart in 2026

Mapping MCP, A2A, and ACP: Telling AI Agent Protocols Apart in 2026

1
Comments
12 min read
The Day client_id Becomes a URL: Client ID Metadata Documents vs Dynamic Client Registration (DCR)

The Day client_id Becomes a URL: Client ID Metadata Documents vs Dynamic Client Registration (DCR)

1
Comments
15 min read
AgentAuth Deep Dive: Reading the Self-Authenticating UUID for AI Agents from the Source

AgentAuth Deep Dive: Reading the Self-Authenticating UUID for AI Agents from the Source

Comments
14 min read
JWT (Access Token) vs X.509 Deep Dive: How to Choose What You Present as a Credential

JWT (Access Token) vs X.509 Deep Dive: How to Choose What You Present as a Credential

Comments
10 min read
a2claude: Turn Claude Code Into a Server Other AI Agents Can Call

a2claude: Turn Claude Code Into a Server Other AI Agents Can Call

Comments
9 min read
A2A Protocol Auth, Taken Apart: Why the Spec Is Thin and Where That Leaves Holes

A2A Protocol Auth, Taken Apart: Why the Spec Is Thin and Where That Leaves Holes

Comments
17 min read
gRPC Deep Dive: Stubs, HTTP/2 Frames, and Why Netflix, Spotify, and Mercari Switched

gRPC Deep Dive: Stubs, HTTP/2 Frames, and Why Netflix, Spotify, and Mercari Switched

Comments
20 min read
What xDS Actually Ships: Your Control Plane Sends protobuf, Not YAML

What xDS Actually Ships: Your Control Plane Sends protobuf, Not YAML

Comments
20 min read
xDS Deep Dive, Part 2: Designing What You Ship Over the Universal Data Plane API

xDS Deep Dive, Part 2: Designing What You Ship Over the Universal Data Plane API

Comments
32 min read
Why AWS IAM Is So Hard

Why AWS IAM Is So Hard

Comments
15 min read
Transaction Tokens Deep Dive: The OAuth Spec That Carries 'Who, and Why' Across Your Microservices

Transaction Tokens Deep Dive: The OAuth Spec That Carries 'Who, and Why' Across Your Microservices

1
Comments
11 min read
ID-JAG, Transaction Tokens, WIF: The Three Layers of AI Agent Auth

ID-JAG, Transaction Tokens, WIF: The Three Layers of AI Agent Auth

2
Comments 1
21 min read
SPIFFE Compliance Deep Dive

SPIFFE Compliance Deep Dive

Comments
15 min read
AWS SigV4 and SigV4A Deep Dive

AWS SigV4 and SigV4A Deep Dive

1
Comments
14 min read
AWS IAM Roles Anywhere Deep Dive

AWS IAM Roles Anywhere Deep Dive

Comments
12 min read
Microsegmentation Deep Dive

Microsegmentation Deep Dive

Comments
14 min read
AWS IAM Roles Anywhere Hands-On

AWS IAM Roles Anywhere Hands-On

1
Comments
14 min read
AWS STS Deep Dive

AWS STS Deep Dive

Comments
18 min read
WORM (Write Once Read Many) Deep Dive

WORM (Write Once Read Many) Deep Dive

Comments
17 min read
AWS S3 Deep Dive

AWS S3 Deep Dive

Comments
9 min read
AWS IAM Deep Dive

AWS IAM Deep Dive

1
Comments
9 min read
AWS Free Hands-On

AWS Free Hands-On

3
Comments
16 min read
loading...