Add project files.

MyOffice.Web/Identity/Repositories/AppUserManager.cs

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+namespace MyOffice.Web.Identity.Repositories;
+
+using System.Security.Cryptography;
+using Domain;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.Extensions.Options;
+
+public class PasswordHasher : IPasswordHasher<ApplicationUser<Guid>>
+{
+	public string HashPassword(ApplicationUser<Guid> user, string password)
+	{
+		byte[] salt;
+		salt = RandomNumberGenerator.GetBytes(16);
+
+		var pbkdf2 = new Rfc2898DeriveBytes(password, salt, 100000);
+		var hash = pbkdf2.GetBytes(20);
+
+		var hashBytes = new byte[36];
+		Array.Copy(salt, 0, hashBytes, 0, 16);
+		Array.Copy(hash, 0, hashBytes, 16, 20);
+
+		var passwordHash = Convert.ToBase64String(hashBytes);
+
+		return passwordHash;
+	}
+
+	private bool IsValidHash(string password, string passwordHash)
+	{
+		/* Fetch the stored value */
+		/* Extract the bytes */
+		var hashBytes = Convert.FromBase64String(passwordHash);
+		/* Get the salt */
+		var salt = new byte[16];
+		Array.Copy(hashBytes, 0, salt, 0, 16);
+		/* Compute the hash on the password the user entered */
+		var pbkdf2 = new Rfc2898DeriveBytes(password, salt, 100000);
+		var hash = pbkdf2.GetBytes(20);
+		/* Compare the results */
+		for (var i = 0; i < 20; i++)
+			if (hashBytes[i + 16] != hash[i])
+				return false;
+
+		return true;
+	}
+
+	public PasswordVerificationResult VerifyHashedPassword(
+		ApplicationUser<Guid> user,
+		string hashedPassword,
+		string providedPassword
+	)
+	{
+		if (IsValidHash(providedPassword, hashedPassword)) return PasswordVerificationResult.Success;
+
+		return PasswordVerificationResult.Failed;
+	}
+}
+
+public class AppUserManager : UserManager<ApplicationUser<Guid>>
+{
+	public AppUserManager(
+		IUserStore<ApplicationUser<Guid>> store,
+		IOptions<IdentityOptions> optionsAccessor,
+		IPasswordHasher<ApplicationUser<Guid>> passwordHasher,
+		IEnumerable<IUserValidator<ApplicationUser<Guid>>> userValidators,
+		IEnumerable<IPasswordValidator<ApplicationUser<Guid>>> passwordValidators,
+		ILookupNormalizer keyNormalizer,
+		IdentityErrorDescriber errors,
+		IServiceProvider services,
+		ILogger<UserManager<ApplicationUser<Guid>>> logger) :
+		base(
+			store,
+			optionsAccessor,
+			passwordHasher,
+			userValidators,
+			passwordValidators,
+			keyNormalizer,
+			errors,
+			services,
+			logger
+		)
+	{
+	}
+}