SSL Converter ✓
Docs

API Reference

A single POST endpoint that converts an SSL certificate from one format to another.

Endpoint

POST https://ae8.com.br/sslconverter/api/

The legacy URL (/sslconverter/) also accepts POSTs and forwards them to this endpoint, so existing integrations keep working without changes.

Authentication

Each request must carry a valid API key, by any of:

Invalid or missing keys return 401.

Request body (multipart/form-data)

FieldRequiredDescription
certFileyesThe source certificate file.
certTypeFromyesSource format: pfx, pem, der, crt, cer, p7b, key.
certTypeToyesTarget format (same set).
certPasswordwhen neededPFX import password, or export password when producing a PFX.
keyFilewhen neededPrivate key, required only when certTypeTo=pfx and certTypeFrom is not pfx.
jsonnoSet to true/1 to receive a JSON envelope with download links and timing, instead of the binary file.

Supported conversions

pfx  → crt, cer, key, pem, p7b
pem  → crt, cer, der, p7b, pfx*
crt  → pem, cer, der, p7b, pfx*
cer  → pem, crt, der, p7b, pfx*
der  → pem, crt, cer
p7b  → pem, crt, cer

* requires keyFile

Responses

JSON envelope (with json=true)

{
  "status":   "success",
  "elapsed":  0.412,
  "from":     "pfx",
  "to":       "crt",
  "original": {
    "filename": "cert_20260516180000_a1b2c3.pfx",
    "size":     4321,
    "download": "https://…/api/download?file=…&key=…"
  },
  "converted": {
    "filename": "cert_20260516180000_a1b2c3_converted.crt",
    "size":     2156,
    "download": "https://…/api/download?file=…&key=…"
  },
  // present only when the uploaded PFX was a legacy file that we modernised:
  "updated": {
    "filename": "cert_20260516180000_a1b2c3_updated.pfx",
    "size":     4480,
    "download": "https://…/api/download?file=…&key=…"
  }
}

The updated entry only appears when the uploaded PFX was a legacy file (older OpenSSL / RC2-40) that we re-exported with current algorithms. Use it as a drop-in modern replacement for the original.

Error envelope

{ "status": "error", "message": "…" }

Examples

cURL — PFX → CRT

curl -X POST https://ae8.com.br/sslconverter/api/ \
  -H "X-API-Key: $KEY" \
  -F certTypeFrom=pfx \
  -F certTypeTo=crt \
  -F certPassword=secret \
  -F certFile=@cert.pfx \
  -o cert.crt

cURL — JSON mode

curl -X POST https://ae8.com.br/sslconverter/api/ \
  -H "X-API-Key: $KEY" \
  -F certTypeFrom=pfx \
  -F certTypeTo=crt \
  -F certPassword=secret \
  -F certFile=@cert.pfx \
  -F json=true

cURL — PEM + KEY → PFX

curl -X POST "https://ae8.com.br/sslconverter/api/?key=$KEY" \
  -F certTypeFrom=pem \
  -F certTypeTo=pfx \
  -F certPassword=newpass \
  -F certFile=@cert.pem \
  -F keyFile=@cert.key \
  -o cert.pfx

PHP — PFX → CRT

$api = 'https://ae8.com.br/sslconverter/api/';
$post = [
    'certTypeFrom' => 'pfx',
    'certTypeTo'   => 'crt',
    'certFile'     => curl_file_create('certificate.pfx'),
    'certPassword' => 'secret',
];

$ch = curl_init($api . '?key=' . SSL_CONVERTER_KEY);
curl_setopt_array($ch, [
    CURLOPT_POST           => 1,
    CURLOPT_POSTFIELDS     => $post,
    CURLOPT_RETURNTRANSFER => true,
]);
$response = curl_exec($ch);
curl_close($ch);
file_put_contents('certificate.crt', $response);

Notes