Rail-fence cipher API

Encodes/decodes the rail-fence (zigzag) transposition cipher for a given number of rails, correctly rebuilding the zigzag traversal on decode. Answers 'What is the 3-rail rail-fence of this text?', 'Decrypt this rail-fence ciphertext.'

Price$0.02per request

MethodPOST

Route/v1/encoding/rail-fence

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

rail-fencetranspositioncipherzigzagencodedecodeclassicalencoding

API URLhttps://x402.hexl.dev/v1/encoding/rail-fence

Integration docs

Example request

{
  "value": "WEAREDISCOVEREDFLEEATONCE",
  "rails": 3
}

Example response

{
  "operation": "encode",
  "rails": 3,
  "result": "WECRLTEERDSOEEFEAOCAIVDEN",
  "interpretation": "Rail-fence (3 rails) encoded 25 chars."
}

Input schema

{
  "type": "object",
  "required": [
    "value",
    "rails"
  ],
  "properties": {
    "value": {
      "type": "string",
      "examples": [
        "WEAREDISCOVEREDFLEEATONCE"
      ]
    },
    "rails": {
      "type": "number",
      "examples": [
        3
      ]
    },
    "operation": {
      "type": "string",
      "enum": [
        "encode",
        "decode"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}