add JSON Web Key definitions

Author: CADBIMDeveloper

src/JWT/Jwk/JwtWebKey.cs

@@ -0,0 +1,47 @@
+using Newtonsoft.Json;
+
+#if MODERN_DOTNET
+using System.Text.Json.Serialization;
+#endif
+
+namespace JWT.Jwk
+{
+    /// <summary>
+    /// A JSON Web Key (JWK) is a JavaScript Object Notation (JSON) data structure that represents a cryptographic key
+    /// specifed by RFC 7517, see https://datatracker.ietf.org/doc/html/rfc7517
+    /// </summary>
+    public sealed class JwtWebKey
+    {
+#if MODERN_DOTNET
+        [System.Text.Json.Serialization.JsonConstructor]
+        public JwtWebKey()
+        {
+
+        } 
+#endif
+
+        [JsonProperty("kty")]
+#if MODERN_DOTNET
+        [JsonPropertyName("kty")]
+#endif
+        public string KeyType { get; set; }
+
+        [JsonProperty("kid")]
+#if MODERN_DOTNET
+        [JsonPropertyName("kid")]
+#endif
+        public string KeyId { get; set; }
+
+        [JsonProperty("n")]
+#if MODERN_DOTNET
+        [JsonPropertyName("n")]
+#endif
+        public string Modulus { get; set; }
+
+        [JsonProperty("e")]
+#if MODERN_DOTNET
+        [JsonPropertyName("e")]
+#endif
+        public string Exponent { get; set; }
+    }
+}

src/JWT/Jwk/JwtWebKeySet.cs

@@ -0,0 +1,31 @@
+
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+#if MODERN_DOTNET
+using System.Text.Json.Serialization;
+#endif
+
+namespace JWT.Jwk
+{
+    /// <summary>
+    /// A JWK Set JSON data structure that represents a set of JSON Web Keys
+    /// specifed by RFC 7517, see https://datatracker.ietf.org/doc/html/rfc7517
+    /// </summary>
+    public sealed class JwtWebKeySet
+    {
+#if MODERN_DOTNET
+        [System.Text.Json.Serialization.JsonConstructor]
+        public JwtWebKeySet()
+        {
+
+        } 
+#endif
+
+        [JsonProperty("keys")]
+#if MODERN_DOTNET
+        [JsonPropertyName("keys")]
+#endif
+        public IEnumerable<JwtWebKey> Keys { get; set; } = null!;
+    }
+}