transactions

back/controllers/CryptoController.cs

@@ -0,0 +1,21 @@
+using back.services.engine.Crypto;
+using Microsoft.AspNetCore.Mvc;
+using System.Net;
+
+namespace back.controllers;
+
+[ApiController, Route("api/[controller]")]
+public class CryptoController(ICryptoService cryptoService) : ControllerBase
+{
+    [HttpGet("[action]")] public async Task<IActionResult> RSA([FromHeader(Name = "X-client-thumbprint")] string clientId) 
+    {
+        if (string.IsNullOrWhiteSpace(clientId)) 
+        {
+            return BadRequest("Client ID is required.");
+        }
+        var key = cryptoService.GetPublicCertificate(clientId);
+        if (key == null)
+            return StatusCode((int)HttpStatusCode.InternalServerError, "Failed to generate RSA keys.");
+        return Ok(new { PublicKey = key });
+    }
+}