Update cheatsheets

jwt

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# jwt
+
+> Work with JSON Web Tokens (JWTs).
+> Encryption algorithms available are HS256, HS384, HS512, RS256, RS384, RS512, ES256, ES384.
+> More information: <https://github.com/mike-engel/jwt-cli>.
+
+- Decode a JWT:
+
+`jwt decode {{jwt_string}}`
+
+- Decode a JWT as a JSON string:
+
+`jwt decode -j {{jwt_string}}`
+
+- Encode a JSON string to a JWT:
+
+`jwt encode --alg {{HS256}} --secret {{1234567890}} '{{json_string}}'`
+
+- Encode key pair payload to JWT:
+
+`jwt encode --alg {{HS256}} --secret {{1234567890}} -P {{key=value}}`