Welcome to José!

José is a C-language implementation of the Javascript Object Signing and Encryption standards. Specifically, José aims towards implementing the following standards:

• RFC 7515 - JSON Web Signature (JWS)
• RFC 7516 - JSON Web Encryption (JWE)
• RFC 7517 - JSON Web Key (JWK)
• RFC 7518 - JSON Web Algorithms (JWA)
• RFC 7519 - JSON Web Token (JWT)
• RFC 7520 - Examples of ... JOSE
• RFC 7638 - JSON Web Key (JWK) Thumbprint

José is extensively tested against the RFC test vectors.

Supported Algorithms

Algorithm	Supported	Algorithm Type	JWK Type
HS256	YES	Signature	oct
HS384	YES	Signature	oct
HS512	YES	Signature	oct
RS256	YES	Signature	RSA
RS384	YES	Signature	RSA
RS512	YES	Signature	RSA
ES256	YES	Signature	EC
ES384	YES	Signature	EC
ES512	YES	Signature	EC
ES256K	YES	Signature	EC
PS256	YES	Signature	RSA
PS384	YES	Signature	RSA
PS512	YES	Signature	RSA
none	NO	Signature	N/A
RSA1_5	YES	Key Wrap	RSA
RSA-OAEP	YES	Key Wrap	RSA
RSA-OAEP-256	YES	Key Wrap	RSA
A128KW	YES	Key Wrap	oct
A192KW	YES	Key Wrap	oct
A256KW	YES	Key Wrap	oct
dir	YES	Key Wrap	oct
ECDH-ES	YES	Key Wrap	EC
ECDH-ES+A128KW	YES	Key Wrap	EC
ECDH-ES+A192KW	YES	Key Wrap	EC
ECDH-ES+A256KW	YES	Key Wrap	EC
A128GCMKW	YES	Key Wrap	oct
A192GCMKW	YES	Key Wrap	oct
A256GCMKW	YES	Key Wrap	oct
PBES2-HS256+A128KW	YES	Key Wrap	N/A
PBES2-HS384+A192KW	YES	Key Wrap	N/A
PBES2-HS512+A256KW	YES	Key Wrap	N/A
A128CBC-HS256	YES	Encryption	oct
A192CBC-HS384	YES	Encryption	oct
A256CBC-HS512	YES	Encryption	oct
A128GCM	YES	Encryption	oct
A192GCM	YES	Encryption	oct
A256GCM	YES	Encryption	oct

José Command-Line Utility

José provides a command-line utility which encompasses most of the JOSE features. This allows for easy integration into your project and one-off scripts. Below you will find examples of the common commands.

Key Management

José can generate keys, remove private keys and show thumbprints. For example:

# Generate three different kinds of keys
$ jose jwk gen -i '{"alg": "A128GCM"}' -o oct.jwk
$ jose jwk gen -i '{"alg": "RSA1_5"}' -o rsa.jwk
$ jose jwk gen -i '{"alg": "ES256"}' -o ec.jwk

# Remove the private keys
$ jose jwk pub -i oct.jwk -o oct.pub.jwk
$ jose jwk pub -i rsa.jwk -o rsa.pub.jwk
$ jose jwk pub -i ec.jwk -o ec.pub.jwk

# Calculate thumbprints
$ jose jwk thp -i oct.jwk
9ipMcxQLsI56Mqr3yYS8hJguJ6Mc8Zh6fkufoiKokrM
$ jose jwk thp -i rsa.jwk
rS6Yno3oQYRIztC6np62nthbmdydhrWmK2Zn_Izmerw
$ jose jwk thp -i ec.jwk
To8yMD92X82zvGoERAcDzlPP6awMYGM2HYDc1G5xOtc

Signatures

José can sign and verify data. For example:

$ echo hi | jose jws sig -i- -k ec.jwk -o msg.jws
$ jose jws ver -i msg.jws -k ec.pub.jwk
hi
$ jose jws ver -i msg.jws -k oct.jwk
No signatures validated!

Encryption

José can encrypt and decrypt data. For example:

$ echo hi | jose jwe enc -i- -k rsa.pub.jwk -o msg.jwe
$ jose jwe dec -i msg.jwe -k rsa.jwk
hi
$ jose jwe dec -i msg.jwe -k oct.jwk
Decryption failed!

Building and Installing from Source

Building Jose is fairly straightforward:

$ mkdir build && cd build
$ meson setup .. --prefix=/usr
$ ninja
$ sudo ninja install

You can even run the tests if you'd like:

$ meson test

To build a FreeBSD, HardenedBSD or OPNsense package use:

(as root) # pkg install meson pkgconf jansson openssl asciidoc jq

$ mkdir build && cd build
$ meson setup .. --prefix=/usr/local
$ ninja
$ meson test
(as root) # ninja install

Once built it does not require meson and pkgconf, but still requires jansson and openssl.