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119 lines
5.9 KiB
Markdown
119 lines
5.9 KiB
Markdown
# Go JOSE
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[](https://godoc.org/gopkg.in/square/go-jose.v1)
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[](https://godoc.org/gopkg.in/square/go-jose.v2)
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[](https://raw.githubusercontent.com/square/go-jose/master/LICENSE)
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[](https://travis-ci.org/square/go-jose)
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[](https://coveralls.io/r/square/go-jose)
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Package jose aims to provide an implementation of the Javascript Object Signing
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and Encryption set of standards. This includes support for JSON Web Encryption,
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JSON Web Signature, and JSON Web Token standards.
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**Disclaimer**: This library contains encryption software that is subject to
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the U.S. Export Administration Regulations. You may not export, re-export,
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transfer or download this code or any part of it in violation of any United
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States law, directive or regulation. In particular this software may not be
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exported or re-exported in any form or on any media to Iran, North Sudan,
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Syria, Cuba, or North Korea, or to denied persons or entities mentioned on any
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US maintained blocked list.
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## Overview
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The implementation follows the
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[JSON Web Encryption](http://dx.doi.org/10.17487/RFC7516) (RFC 7516),
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[JSON Web Signature](http://dx.doi.org/10.17487/RFC7515) (RFC 7515), and
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[JSON Web Token](http://dx.doi.org/10.17487/RFC7519) (RFC 7519).
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Tables of supported algorithms are shown below. The library supports both
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the compact and full serialization formats, and has optional support for
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multiple recipients. It also comes with a small command-line utility
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([`jose-util`](https://github.com/square/go-jose/tree/v2/jose-util))
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for dealing with JOSE messages in a shell.
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**Note**: We use a forked version of the `encoding/json` package from the Go
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standard library which uses case-sensitive matching for member names (instead
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of [case-insensitive matching](https://www.ietf.org/mail-archive/web/json/current/msg03763.html)).
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This is to avoid differences in interpretation of messages between go-jose and
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libraries in other languages.
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### Versions
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We use [gopkg.in](https://gopkg.in) for versioning.
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[Version 2](https://gopkg.in/square/go-jose.v2)
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([branch](https://github.com/square/go-jose/tree/v2),
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[doc](https://godoc.org/gopkg.in/square/go-jose.v2)) is the current version:
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import "gopkg.in/square/go-jose.v2"
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The old `v1` branch ([go-jose.v1](https://gopkg.in/square/go-jose.v1)) will
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still receive backported bug fixes and security fixes, but otherwise
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development is frozen. All new feature development takes place on the `v2`
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branch. Version 2 also contains additional sub-packages such as the
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[jwt](https://godoc.org/gopkg.in/square/go-jose.v2/jwt) implementation
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contributed by [@shaxbee](https://github.com/shaxbee).
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### Supported algorithms
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See below for a table of supported algorithms. Algorithm identifiers match
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the names in the [JSON Web Algorithms](http://dx.doi.org/10.17487/RFC7518)
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standard where possible. The Godoc reference has a list of constants.
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Key encryption | Algorithm identifier(s)
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:------------------------- | :------------------------------
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RSA-PKCS#1v1.5 | RSA1_5
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RSA-OAEP | RSA-OAEP, RSA-OAEP-256
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AES key wrap | A128KW, A192KW, A256KW
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AES-GCM key wrap | A128GCMKW, A192GCMKW, A256GCMKW
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ECDH-ES + AES key wrap | ECDH-ES+A128KW, ECDH-ES+A192KW, ECDH-ES+A256KW
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ECDH-ES (direct) | ECDH-ES<sup>1</sup>
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Direct encryption | dir<sup>1</sup>
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<sup>1. Not supported in multi-recipient mode</sup>
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Signing / MAC | Algorithm identifier(s)
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:------------------------- | :------------------------------
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RSASSA-PKCS#1v1.5 | RS256, RS384, RS512
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RSASSA-PSS | PS256, PS384, PS512
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HMAC | HS256, HS384, HS512
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ECDSA | ES256, ES384, ES512
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Ed25519 | EdDSA<sup>2</sup>
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<sup>2. Only available in version 2 of the package</sup>
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Content encryption | Algorithm identifier(s)
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:------------------------- | :------------------------------
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AES-CBC+HMAC | A128CBC-HS256, A192CBC-HS384, A256CBC-HS512
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AES-GCM | A128GCM, A192GCM, A256GCM
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Compression | Algorithm identifiers(s)
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:------------------------- | -------------------------------
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DEFLATE (RFC 1951) | DEF
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### Supported key types
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See below for a table of supported key types. These are understood by the
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library, and can be passed to corresponding functions such as `NewEncrypter` or
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`NewSigner`. Each of these keys can also be wrapped in a JWK if desired, which
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allows attaching a key id.
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Algorithm(s) | Corresponding types
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:------------------------- | -------------------------------
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RSA | *[rsa.PublicKey](http://golang.org/pkg/crypto/rsa/#PublicKey), *[rsa.PrivateKey](http://golang.org/pkg/crypto/rsa/#PrivateKey)
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ECDH, ECDSA | *[ecdsa.PublicKey](http://golang.org/pkg/crypto/ecdsa/#PublicKey), *[ecdsa.PrivateKey](http://golang.org/pkg/crypto/ecdsa/#PrivateKey)
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EdDSA<sup>1</sup> | [ed25519.PublicKey](https://godoc.org/golang.org/x/crypto/ed25519#PublicKey), [ed25519.PrivateKey](https://godoc.org/golang.org/x/crypto/ed25519#PrivateKey)
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AES, HMAC | []byte
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<sup>1. Only available in version 2 of the package</sup>
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## Examples
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[](https://godoc.org/gopkg.in/square/go-jose.v1)
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[](https://godoc.org/gopkg.in/square/go-jose.v2)
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Examples can be found in the Godoc
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reference for this package. The
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[`jose-util`](https://github.com/square/go-jose/tree/v2/jose-util)
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subdirectory also contains a small command-line utility which might be useful
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as an example.
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