# P12 Password Changer

Safely change the password of a PKCS#12 (.p12) certificate file.

## Endpoint

`POST /api/p12passwordchanger`

## Description

This endpoint accepts a P12 file, its current password, and a desired new password. It decrypts the file and re-encrypts it with the new password. The response includes a temporary secure download link for the modified `.p12` file.

## Headers

| Header | Value | Required |
|---|---|---|
| `Authorization` | `Bearer <your_api_token>` | Yes |
| `Accept` | `application/json` | Yes |
| `Content-Type` | `multipart/form-data` | Yes |

## Body Parameters

| Parameter | Type | Required | Description |
|---|---|---|---|
| `p12_file` | File | Yes | The .p12 or .pfx file to modify. |
| `old_password` | String | Yes | The current password of the P12 file. |
| `new_password` | String | Yes | The new password to set for the file. |

## Example Request

```bash
curl -X POST https://developer.nabzclan.vip/api/p12passwordchanger \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Accept: application/json" \
  -F "p12_file=@certificate.p12" \
  -F "old_password=oldpass123" \
  -F "new_password=newpass456"
```

## Responses

### Success (200 OK)

Returns a JSON object with download URLs.

```json
{
  "success": true,
  "error": null,
  "data": {
    "message": "Password changed successfully",
    "download_url": "https://developer.nabzclan.vip/api/p12passwordchanger/download/...",
    "password": "newpass456",
    "filename": "modified_certificate.p12",
    "warning": "Download URL is valid for one-time use only. File will be deleted after first download."
  }
}
```

### Error (400 Bad Request)

Returned if the old password is incorrect or the file is invalid.

```json
{
    "error": "Incorrect old password."
}
```

### Error (500 Internal Server Error)

Returned if the encryption or processing failed.

```json
{
    "error": "Internal server error: ..."
}
```