[PS-2358] Add kdf configuration options (#2328)

* Implement kdf configuration

* Remove unused import

* Move kdf parameters to kdfConfiguration struct

* Remove unused state migration service keys

* Revert newline changes in PCLCryptoFunctionService

* Update KdfConfiguration.cs

* Add checks for argon2, clean statemigration service

* Update constants

* Clean up code

* Further cleanup

* Change KdfType to non-nullable in SetKeyConnectorKeyRequest

---------

Co-authored-by: Kyle Spearrin <kspearrin@users.noreply.github.com>

src/Core/Models/Domain/Account.cs

@@ -46,6 +46,8 @@ namespace Bit.Core.Models.Domain
                 OrgIdentifier = copy.OrgIdentifier;
                 KdfType = copy.KdfType;
                 KdfIterations = copy.KdfIterations;
+                KdfMemory = copy.KdfMemory;
+                KdfParallelism = copy.KdfParallelism;
                 EmailVerified = copy.EmailVerified;
                 HasPremiumPersonally = copy.HasPremiumPersonally;
                 AvatarColor = copy.AvatarColor;
@@ -59,6 +61,8 @@ namespace Bit.Core.Models.Domain
             public string AvatarColor;
             public KdfType? KdfType;
             public int? KdfIterations;
+            public int? KdfMemory;
+            public int? KdfParallelism;
             public bool? EmailVerified;
             public bool? HasPremiumPersonally;
         }

src/Core/Models/Domain/KdfConfiguration.cs

@@ -0,0 +1,27 @@
+using Bit.Core;
+using Bit.Core.Enums;
+using Bit.Core.Models.Domain;
+public struct KdfConfig
+{
+    public static KdfConfig Default = new KdfConfig(KdfType.PBKDF2_SHA256, 5000, null, null);
+    public KdfConfig(KdfType? type, int? iterations, int? memory, int? parallelism)
+    {
+        Type = type;
+        Iterations = iterations;
+        Memory = memory;
+        Parallelism = parallelism;
+    }
+
+    public KdfConfig(Account.AccountProfile profile)
+    {
+        Type = profile.KdfType;
+        Iterations = profile.KdfIterations;
+        Memory = profile.KdfMemory;
+        Parallelism = profile.KdfParallelism;
+    }
+
+    public KdfType? Type { get; set; }
+    public int? Iterations { get; set; }
+    public int? Memory { get; set; }
+    public int? Parallelism { get; set; }
+}

src/Core/Models/Request/RegisterRequest.cs

@@ -15,6 +15,8 @@ namespace Bit.Core.Models.Request
         public Guid? OrganizationUserId { get; set; }
         public KdfType? Kdf { get; set; }
         public int? KdfIterations { get; set; }
+        public int? KdfMemory { get; set; }
+        public int? KdfParallelism { get; set; }
         public string CaptchaResponse { get; set; }
     }
 }

src/Core/Models/Request/SetKeyConnectorKeyRequest.cs

@@ -9,15 +9,18 @@ namespace Bit.Core.Models.Request
         public KeysRequest Keys { get; set; }
         public KdfType Kdf { get; set; }
         public int? KdfIterations { get; set; }
+        public int? KdfMemory { get; set; }
+        public int? KdfParallelism { get; set; }
         public string OrgIdentifier { get; set; }
 
-        public SetKeyConnectorKeyRequest(string key, KeysRequest keys,
-            KdfType kdf, int? kdfIterations, string orgIdentifier)
+        public SetKeyConnectorKeyRequest(string key, KeysRequest keys, KdfConfig kdfConfig, string orgIdentifier)
         {
             this.Key = key;
             this.Keys = keys;
-            this.Kdf = kdf;
-            this.KdfIterations = kdfIterations;
+            this.Kdf = kdfConfig.Type.GetValueOrDefault(KdfType.PBKDF2_SHA256);
+            this.KdfIterations = kdfConfig.Iterations;
+            this.KdfMemory = kdfConfig.Memory;
+            this.KdfParallelism = kdfConfig.Parallelism;
             this.OrgIdentifier = orgIdentifier;
         }
     }

src/Core/Models/Request/SetPasswordRequest.cs

@@ -10,6 +10,8 @@ namespace Bit.Core.Models.Request
         public KeysRequest Keys { get; set; }
         public KdfType Kdf { get; set; }
         public int KdfIterations { get; set; }
+        public int? KdfMemory { get; set; }
+        public int? KdfParallelism { get; set; }
         public string OrgIdentifier { get; set; }
     }
 }

src/Core/Models/Response/IdentityTokenResponse.cs

@@ -20,7 +20,11 @@ namespace Bit.Core.Models.Response
         public string TwoFactorToken { get; set; }
         public KdfType Kdf { get; set; }
         public int? KdfIterations { get; set; }
+        public int? KdfMemory { get; set; }
+        public int? KdfParallelism { get; set; }
         public bool ForcePasswordReset { get; set; }
         public string KeyConnectorUrl { get; set; }
+        [JsonIgnore]
+        public KdfConfig KdfConfig => new KdfConfig(Kdf, KdfIterations, KdfMemory, KdfParallelism);
     }
 }

src/Core/Models/Response/PreloginResponse.cs

@@ -1,4 +1,5 @@
 using Bit.Core.Enums;
+using Newtonsoft.Json;
 
 namespace Bit.Core.Models.Response
 {
@@ -6,5 +7,9 @@ namespace Bit.Core.Models.Response
     {
         public KdfType Kdf { get; set; }
         public int KdfIterations { get; set; }
+        public int? KdfMemory { get; set; }
+        public int? KdfParallelism { get; set; }
+        [JsonIgnore]
+        public KdfConfig KdfConfig => new KdfConfig(Kdf, KdfIterations, KdfMemory, KdfParallelism);
     }
 }