Chris Chen
23 lines
814 B
C#
23 lines
814 B
C#
using Microsoft.AspNetCore.DataProtection;
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namespace ROLAC.API.Services.Security;
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public class TinProtector : ITinProtector
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{
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private readonly IDataProtector _protector;
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public TinProtector(IDataProtectionProvider provider)
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=> _protector = provider.CreateProtector("Payee1099.Tin");
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public string Protect(string plaintext) => _protector.Protect(plaintext);
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public string Unprotect(string ciphertext) => _protector.Unprotect(ciphertext);
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/// <summary>Last four digits of a TIN (ignoring dashes/spaces); null/empty in => null.</summary>
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public static string? Last4(string? raw)
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{
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if (string.IsNullOrWhiteSpace(raw)) return null;
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var digits = new string(raw.Where(char.IsDigit).ToArray());
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return digits.Length <= 4 ? digits : digits[^4..];
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}
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}
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