Added JWK and JWKS support

.gitignore

@@ -5,4 +5,5 @@ Packages
 Package.pins
 Package.resolved
 DerivedData
+.swiftpm
 

Package.swift

@@ -1,20 +1,23 @@
-// swift-tools-version:4.0
+// swift-tools-version:5.0
 import PackageDescription
 
 let package = Package(
-    name: "JWT",
+    name: "jwt-kit",
     products: [
-        .library(name: "JWT", targets: ["JWT"]),
-    ],
-    dependencies: [
-        // 🌎 Utility package containing tools for byte manipulation, Codable, OS APIs, and debugging.
-        .package(url: "https://github.com/vapor/core.git", from: "3.0.0"),
-
-        // 🔑 Hashing (BCrypt, SHA, HMAC, etc), encryption, and randomness.
-        .package(url: "https://github.com/vapor/crypto.git", from: "3.0.0"),
+        .library(name: "JWTKit", targets: ["JWTKit"]),
     ],
+    dependencies: [ ],
     targets: [
-        .target(name: "JWT", dependencies: ["Core", "Crypto"]),
-        .testTarget(name: "JWTTests", dependencies: ["JWT"]),
+        .systemLibrary(
+            name: "CJWTKitOpenSSL",
+            pkgConfig: "openssl",
+            providers: [
+                .apt(["openssl libssl-dev"]),
+                .brew(["openssl"])
+            ]
+        ),
+        .target(name: "CJWTKitCrypto", dependencies: ["CJWTKitOpenSSL"]),
+        .target(name: "JWTKit", dependencies: ["CJWTKitCrypto"]),
+        .testTarget(name: "JWTKitTests", dependencies: ["JWTKit"]),
     ]
 )

README.md

@@ -1,21 +1,21 @@
 <p align="center">
-    <img src="https://user-images.githubusercontent.com/1342803/36768561-e10bba90-1c0d-11e8-85b5-f9d1e605cc8a.png" height="64" alt="JWT">
+    <img src="https://user-images.githubusercontent.com/1342803/59471117-1c77b300-8e08-11e9-838e-441b280855b3.png" alt="JWTKit">
     <br>
     <br>
-    <a href="https://docs.vapor.codes/3.0/jwt/getting-started/">
-        <img src="http://img.shields.io/badge/read_the-docs-2196f3.svg" alt="Documentation">
+    <a href="https://api.vapor.codes/jwt-kit/master/JWTKit/index.html">
+        <img src="http://img.shields.io/badge/api-docs-2196f3.svg" alt="Documentation">
     </a>
     <a href="https://discord.gg/vapor">
         <img src="https://img.shields.io/discord/431917998102675485.svg" alt="Team Chat">
     </a>
     <a href="LICENSE">
         <img src="http://img.shields.io/badge/license-MIT-brightgreen.svg" alt="MIT License">
     </a>
-    <a href="https://circleci.com/gh/vapor/jwt">
-        <img src="https://circleci.com/gh/vapor/jwt.svg?style=shield" alt="Continuous Integration">
+    <a href="https://circleci.com/gh/vapor/jwt-kit">
+        <img src="https://circleci.com/gh/vapor/jwt-kit.svg?style=shield" alt="Continuous Integration">
     </a>
     <a href="https://swift.org">
-        <img src="http://img.shields.io/badge/swift-4.1-brightgreen.svg" alt="Swift 4.1">
+        <img src="http://img.shields.io/badge/swift-5.0-brightgreen.svg" alt="Swift 5.0">
     </a>
 </p>
 

Sources/CJWTKitCrypto/c_jwtkit_crypto.c

@@ -0,0 +1,30 @@
+#include "include/c_jwtkit_crypto.h"
+
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined(LIBRESSL_VERSION_NUMBER)
+EVP_MD_CTX *EVP_MD_CTX_new(void) {
+    return EVP_MD_CTX_create();
+};
+
+void EVP_MD_CTX_free(EVP_MD_CTX *ctx) {
+    EVP_MD_CTX_cleanup(ctx);
+    free(ctx);
+};
+
+int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) {
+    r->n = n;
+    r->e = e;
+    r->d = d;
+    return 0;
+};
+
+HMAC_CTX *HMAC_CTX_new(void) {
+    HMAC_CTX *ptr = malloc(sizeof(HMAC_CTX));
+    HMAC_CTX_init(ptr);
+    return ptr;
+};
+
+void HMAC_CTX_free(HMAC_CTX *ctx) {
+    HMAC_CTX_cleanup(ctx);
+    free(ctx);
+};
+#endif

Sources/CJWTKitCrypto/include/c_jwtkit_crypto.h

@@ -0,0 +1,25 @@
+#ifndef C_JWTKIT_OPENSSL_H
+#define C_JWTKIT_OPENSSL_H
+
+#include <openssl/conf.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/bio.h>
+#include <openssl/ssl.h>
+#include <openssl/sha.h>
+#include <openssl/md5.h>
+#include <openssl/hmac.h>
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/pkcs12.h>
+#include <openssl/x509v3.h>
+
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L) || defined(LIBRESSL_VERSION_NUMBER)
+EVP_MD_CTX *EVP_MD_CTX_new(void);
+void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
+int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
+HMAC_CTX *HMAC_CTX_new(void);
+void HMAC_CTX_free(HMAC_CTX *ctx);
+#endif
+
+#endif

Sources/CJWTKitOpenSSL/module.modulemap

@@ -0,0 +1,4 @@
+module CJWTKitOpenSSL [system] {
+    link "ssl"
+    link "crypto"
+}

Sources/JWT/JWK+KeyOperation.swift

@@ -0,0 +1,22 @@
+import Foundation
+
+public extension JWK {
+    public enum KeyOperation: String, Codable {
+        /// Compute digital signature or MAC.
+        case sign
+        /// Verify digital signature or MAC.
+        case verify
+        /// Encrypt content.
+        case encrypt
+        /// Decrypt content and validate decryption, if applicable.
+        case decrypt
+        /// Encrypt key.
+        case wrapKey
+        /// Decrypt key and validate decryption, if applicable.
+        case unwrapKey
+        /// Derive key.
+        case deriveKey
+        /// Derive bits not to be used as a key.
+        case deriveBits
+    }
+}

Sources/JWT/JWK+PublicKeyUse.swift

@@ -0,0 +1,42 @@
+import Foundation
+
+public extension JWK {
+    public enum PublicKeyUse: RawRepresentable, Codable {
+        case signature
+        case encryption
+        case other(String)
+
+        public var rawValue: String {
+            switch self {
+            case .signature:
+                return "sig"
+            case .encryption:
+                return "enc"
+            case .other(let value):
+                return value
+            }
+        }
+
+        public init(rawValue: String) {
+            switch rawValue {
+            case "sig":
+                self = .signature
+            case "enc":
+                self = .encryption
+            default:
+                self = .other(rawValue)
+            }
+        }
+
+        public init(from decoder: Decoder) throws {
+            let container = try decoder.singleValueContainer()
+            let rawValue = try container.decode(String.self)
+            self.init(rawValue: rawValue)
+        }
+
+        public func encode(to encoder: Encoder) throws {
+            var container = encoder.singleValueContainer()
+            try container.encode(self.rawValue)
+        }
+    }
+}