Update: JWT Token validity set to a day (coscine/issues#2066)

src/JwtHandler/JwtHandler.cs

@@ -25,8 +25,8 @@ namespace Coscine.JwtHandler
             Configuration = configuration;
             _jwtSecurityTokenHandler = new JwtSecurityTokenHandler();
             _symmetricSecurityKey = GetSecurityKey();
-            _centuryBegin = new DateTime(1970, 1, 1);
-            _defaultExpiration = 30;
+            _centuryBegin = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+            _defaultExpiration = 1440;
             _issuer = "https://coscine.rwth-aachen.de";
             _audience = "https://coscine.rwth-aachen.de";
         }
@@ -52,7 +52,9 @@ namespace Coscine.JwtHandler
                 ValidateIssuerSigningKey = true,
                 IssuerSigningKey = _symmetricSecurityKey,
                 ValidateIssuer = false,
-                ValidateAudience = false
+                ValidateAudience = false,
+                // set clockskew to zero so tokens expire exactly at token expiration time (instead of 5 minutes later)
+                ClockSkew = TimeSpan.Zero
             };
 
             _jwtSecurityTokenHandler.ValidateToken(token, tokenValidationParameters, out _);
@@ -66,7 +68,7 @@ namespace Coscine.JwtHandler
 
         public string GenerateJwtToken(JwtPayload payload, string signatureAlgorithm = "HS256")
         {
-            var issuedAt = DateTime.Now;
+            var issuedAt = DateTime.UtcNow;
             var expires = issuedAt.AddMinutes(_defaultExpiration);
             return GenerateJwtToken(payload, _issuer, _audience, issuedAt, expires, signatureAlgorithm);
         }

src/JwtHandler/Properties/AssemblyInfo.cs

@@ -6,11 +6,11 @@
 using System.Reflection;
 
 [assembly: AssemblyTitle("JwtHandler")]
-[assembly: AssemblyDescription("JwtHandler is a part of the CoScInE group.")]
+[assembly: AssemblyDescription("JwtHandler is a part of the Coscine group.")]
 [assembly: AssemblyCompany("IT Center, RWTH Aachen University")]
 [assembly: AssemblyProduct("JwtHandler")]
 [assembly: AssemblyVersion("1.2.0")]
 [assembly: AssemblyFileVersion("1.2.0")]
 [assembly: AssemblyInformationalVersion("1.2.0-topic-1125-apito0005")]
-[assembly: AssemblyCopyright("2020 IT Center, RWTH Aachen University")]
+[assembly: AssemblyCopyright("2022 IT Center, RWTH Aachen University")]