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https://github.com/seamapi/prefixed-api-key
Module for generating a prefixed API Key
https://github.com/seamapi/prefixed-api-key
Last synced: 11 days ago
JSON representation
Module for generating a prefixed API Key
- Host: GitHub
- URL: https://github.com/seamapi/prefixed-api-key
- Owner: seamapi
- License: mit
- Created: 2022-05-10T22:08:18.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-02-29T05:23:55.000Z (8 months ago)
- Last Synced: 2024-09-19T07:11:19.655Z (about 2 months ago)
- Language: TypeScript
- Size: 58.6 KB
- Stars: 292
- Watchers: 7
- Forks: 13
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome - seamapi/prefixed-api-key - Module for generating a prefixed API Key (TypeScript)
- awesome-github-repos - seamapi/prefixed-api-key - Module for generating a prefixed API Key (TypeScript)
README
# Prefixed API Key (Seam-style)
> Example key: `mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG`
>
> [Discussion on Hacker News](https://news.ycombinator.com/item?id=31333933#31336542) · [Awesome Seam Open-Source](https://github.com/seamapi/awesome-seam)
Seam-style API Keys have many advantages:
- Double clicking the api key selects the entire api key
- The alphabet is standard across languages thanks [to the base58 RFC](https://datatracker.ietf.org/doc/html/draft-msporny-base58) and its usage in cryptocurrencies
- They are shorter than hex and base32 api keys
- They have prefixes [allowing secret scanning by github](https://docs.github.com/en/code-security/secret-scanning/about-secret-scanning)
- They have a hashed component so the server doesn't need to store the api key (reducing attack surface)
- They have unhashed short tokens which can be mutually used by the server and key bearer/customer to identify the api key
- They default to roughly the same number of entropy bits as UUIDv4
## The Format
Seam-style api keys look like this:
```
mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG
```
Let's break down each component of the API key...
```
mycompany ..._... BRTRKFsL ..._... 51FwqftsmMDHHbJAMEXXHCgG
^ ^ ^
Prefix Short Token Long Token
```
- The Prefix is used to identify the company or service creating the API Key.
This is very helpful in secret scanning.
- The Short Token is stored by both the server and the key bearer/customer, it
can be used to identify an API key in logs or displayed on a customer's
dashboard. A token can be blocklisted by its short token.
- The Long Token is how we authenticate this key. The long token is never stored
on the server, but a hash of it is stored on the server. When we receive an
incoming request, we search our database for `short_token` and `hash(long_token)`.
## Getting Started
```ts
import { generateAPIKey } from "prefixed-api-key"
const key = await generateAPIKey({ keyPrefix: 'mycompany' })
// Store the key.longTokenHash and key.shortToken in your database and give
// key.token to your customer.
console.log(key)
/*
{
shortToken: 'BRTRKFsL',
longToken: '51FwqftsmMDHHbJAMEXXHCgG',
longTokenHash: 'd70d981d87b449c107327c2a2afbf00d4b58070d6ba571aac35d7ea3e7c79f37',
token: 'mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG'
}
*/
```
## Utility Methods
```ts
import {
hashLongToken,
extractLongToken,
extractShortToken,
checkAPIKey,
getTokenComponents,
} from "prefixed-api-key"
hashLongToken("51FwqftsmMDHHbJAMEXXHCgG")
// "d70d981d87b449c107327c2a2afbf00d4b58070d6ba571aac35d7ea3e7c79f37"
extractLongToken("mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG")
// "51FwqftsmMDHHbJAMEXXHCgG"
})
extractShortToken("mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG")
// "BRTRKFsL"
getTokenComponents("mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG")
/*
{
shortToken: 'BRTRKFsL',
longToken: '51FwqftsmMDHHbJAMEXXHCgG',
longTokenHash: 'd70d981d87b449c107327c2a2afbf00d4b58070d6ba571aac35d7ea3e7c79f37',
token: 'mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG'
}
*/
await checkAPIKey(
"mycompany_BRTRKFsL_51FwqftsmMDHHbJAMEXXHCgG",
"d70d981d87b449c107327c2a2afbf00d4b58070d6ba571aac35d7ea3e7c79f37"
)
// true
```