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https://github.com/cristalhq/jwt
Safe, simple and fast JSON Web Tokens for Go
https://github.com/cristalhq/jwt
dependency-free go golang golang-library jose jwe jwk jws jwt jwt-claims jwt-token
Last synced: about 16 hours ago
JSON representation
Safe, simple and fast JSON Web Tokens for Go
- Host: GitHub
- URL: https://github.com/cristalhq/jwt
- Owner: cristalhq
- License: mit
- Created: 2019-07-20T18:14:58.000Z (over 5 years ago)
- Default Branch: main
- Last Pushed: 2024-07-10T08:11:23.000Z (5 months ago)
- Last Synced: 2024-12-09T08:55:29.985Z (3 days ago)
- Topics: dependency-free, go, golang, golang-library, jose, jwe, jwk, jws, jwt, jwt-claims, jwt-token
- Language: Go
- Homepage:
- Size: 302 KB
- Stars: 673
- Watchers: 15
- Forks: 46
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# jwt
[![build-img]][build-url]
[![pkg-img]][pkg-url]
[![reportcard-img]][reportcard-url]
[![coverage-img]][coverage-url]
[![version-img]][version-url]
JSON Web Token for Go [RFC 7519](https://tools.ietf.org/html/rfc7519), also see [jwt.io](https://jwt.io) for more.
The latest version is `v5`.
## Rationale
There are many JWT libraries, but many of them are hard to use (unclear or fixed API), not optimal (unneeded allocations + strange API). This library addresses all these issues. It's simple to read, to use, memory and CPU conservative.
## Features
* Simple API.
* Clean and tested code.
* Optimized for speed.
* Concurrent-safe.
* Dependency-free.
* All well-known algorithms are supported
* HMAC (HS)
* RSA (RS)
* RSA-PSS (PS)
* ECDSA (ES)
* EdDSA (EdDSA)
* or your own!
See [GUIDE.md](https://github.com/cristalhq/jwt/blob/main/GUIDE.md) for more details.
## Install
Go version 1.17+
```
go get github.com/cristalhq/jwt/v5
```
## Example
Build new token:
```go
// create a Signer (HMAC in this example)
key := []byte(`secret`)
signer, err := jwt.NewSignerHS(jwt.HS256, key)
checkErr(err)
// create claims (you can create your own, see: ExampleBuilder_withUserClaims)
claims := &jwt.RegisteredClaims{
Audience: []string{"admin"},
ID: "random-unique-string",
}
// create a Builder
builder := jwt.NewBuilder(signer)
// and build a Token
token, err := builder.Build(claims)
checkErr(err)
// here is token as a string
var _ string = token.String()
```
Parse and verify token:
```go
// create a Verifier (HMAC in this example)
key := []byte(`secret`)
verifier, err := jwt.NewVerifierHS(jwt.HS256, key)
checkErr(err)
// parse and verify a token
tokenBytes := token.Bytes()
newToken, err := jwt.Parse(tokenBytes, verifier)
checkErr(err)
// or just verify it's signature
err = verifier.Verify(newToken)
checkErr(err)
// get Registered claims
var newClaims jwt.RegisteredClaims
errClaims := json.Unmarshal(newToken.Claims(), &newClaims)
checkErr(errClaims)
// or parse only claims
errParseClaims := jwt.ParseClaims(tokenBytes, verifier, &newClaims)
checkErr(errParseClaims)
// verify claims as you wish
var _ bool = newClaims.IsForAudience("admin")
var _ bool = newClaims.IsValidAt(time.Now())
```
Also see examples: [example_test.go](https://github.com/cristalhq/jwt/blob/main/example_test.go).
## Documentation
See [these docs][pkg-url].
## License
[MIT License](LICENSE).
[build-img]: https://github.com/cristalhq/jwt/workflows/build/badge.svg
[build-url]: https://github.com/cristalhq/jwt/actions
[pkg-img]: https://pkg.go.dev/badge/cristalhq/jwt/v5
[pkg-url]: https://pkg.go.dev/github.com/cristalhq/jwt/v5
[reportcard-img]: https://goreportcard.com/badge/cristalhq/jwt
[reportcard-url]: https://goreportcard.com/report/cristalhq/jwt
[coverage-img]: https://codecov.io/gh/cristalhq/jwt/branch/main/graph/badge.svg
[coverage-url]: https://codecov.io/gh/cristalhq/jwt
[version-img]: https://img.shields.io/github/v/release/cristalhq/jwt
[version-url]: https://github.com/cristalhq/jwt/releases