Cherry-picked [PM-115] Cipher key encryption update (#2421)

src/Core/Utilities/VersionHelpers.cs

@@ -0,0 +1,34 @@
+using System;
+
+namespace Bit.Core.Utilities
+{
+    public static class VersionHelpers
+    {
+        private const char SUFFIX_SEPARATOR = '-';
+
+        /// <summary>
+        /// Compares two server versions and gets whether the <paramref name="targetVersion"/>
+        /// is greater than or equal to <paramref name="compareToVersion"/>.
+        /// WARNING: This doesn't take into account hotfix suffix.
+        /// </summary>
+        /// <param name="targetVersion">Version to compare</param>
+        /// <param name="compareToVersion">Version to compare against</param>
+        /// <returns>
+        /// <c>True</c> if <paramref name="targetVersion"/> is greater than or equal to <paramref name="compareToVersion"/>; <c>False</c> otherwise.
+        /// </returns>
+        public static bool IsServerVersionGreaterThanOrEqualTo(string targetVersion, string compareToVersion)
+        {
+            return new Version(RemoveSuffix(targetVersion)).CompareTo(new Version(RemoveSuffix(compareToVersion))) >= 0;
+        }
+
+        public static string RemoveSuffix(string version)
+        {
+            if (string.IsNullOrWhiteSpace(version))
+            {
+                throw new ArgumentNullException(nameof(version));
+            }
+
+            return version.Split(SUFFIX_SEPARATOR)[0];
+        }
+    }
+}