Security
Esteganografia de imagem: embutir e detectar
Esconde texto nos bits menos significativos de um PNG, extrai de volta e roda a estegoanálise chi-quadrado de Westfeld–Pfitzmann com curva p deslizante e prévia do plano LSB.
html· Resultado HTMLAbrir ferramenta
Início rápido
Chame esta ferramenta a partir do seu código em três idiomas.
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/image-steganography-embed-detect' \
-H 'Content-Type: application/json' \
-d '{"filename":"imageFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/pt/api/tools/image-steganography-embed-detect' \
-F 'imageFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'mode=embed' \
-F 'secretText=Meet at the old harbor at 9pm — bring the blue key.' \
-F 'scatterSeed=harbor-2026' \
-F 'channels=rgb' \
-F 'skipTransparent=true'