The entropy calculator - alias ec -, analyzes a password and calculates its entropy. Entropy calculator requests are billed.

{
  "type": "object",
  "properties": {
    "alphabetSequence": {
      "type": "array",
      "description": "**The penalty applied to each character that has been found to be part of an alphabet sequence.**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "penalty": {
            "type": "number",
            "description": "The penalty applied to this character if it is part of an alphabet sequence.\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n"
          }
        }
      }
    },
    "apiVersion": {
      "type": "string",
      "description": "**This API version number.**\n"
    },
    "detectedKeyboard": {
      "type": "string",
      "description": "**The detected keyboard, QWERTY or Dvorak.**\n"
    },
    "efficiency": {
      "type": "number",
      "description": "**The ratio entropy / idealEntropy.**\n\nIt is a float number in the range [0, 1].\n"
    },
    "entropy": {
      "type": "number",
      "description": "**The entropy calculated for the input password.**\n\nIt is measured in bits.\n"
    },
    "entropyDistribution": {
      "type": "array",
      "description": "**The distribution of the calculated entropy among the password characters.**\n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "percentage": {
            "type": "number",
            "description": "The amount of entropy contributed by this character, expressed as percentage of the total."
          }
        }
      }
    },
    "idealEntropy": {
      "type": "number",
      "description": "**The Shannon entropy.**\n\nThe Shannon entropy is the entropy calculated if no penalizations - words, number sequence, alphabet sequence, etc - were found in the password.\n\nIt is measured in bits.\n"
    },
    "keyboardSequence": {
      "type": "array",
      "description": "**The penalty applied to each character that has been found to be part of a keyboard sequence.**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "penalty": {
            "type": "number",
            "description": "The penalty applied to this character if it is part of a keyboard sequence.\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n"
          }
        }
      }
    },
    "l33tPassword": {
      "type": "string",
      "description": "The analyzed password after the l33t substitution."
    },
    "nonUniformEntropyDistributionPenalty": {
      "type": "number",
      "description": "**The penalty applied to the whole password because of irregular entropy distribution.**\n\nThis penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n"
    },
    "numberSequence": {
      "type": "array",
      "description": "**The penalty applied to each character that has been found to be part of a number sequence.**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "penalty": {
            "type": "number",
            "description": "The penalty applied to this character if it is part of a number sequence.\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n"
          }
        }
      }
    },
    "password": {
      "type": "string",
      "description": "The analyzed password."
    },
    "passwordLength": {
      "type": "integer",
      "description": "The number of characters the password has."
    },
    "penalty": {
      "type": "number",
      "description": "**The penalty applied to each character that has been found to be part of a word, number sequence, alphabet sequence, etc.**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n\nIts value is equal to the value of the input parameter *penalty*.\n"
    },
    "repeatedChars": {
      "type": "array",
      "description": "**The penalty applied to each character that are repeated**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.          \n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "penalty": {
            "type": "number",
            "description": "The penalty applied to this character if it is repeated.\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n"
          }
        }
      }
    },
    "requestId": {
      "type": "string",
      "description": "**The identifier of the request that corresponds to this response.**\n"
    },
    "requestTimestamp": {
      "type": "number",
      "description": "**The timestamp for this response.**\n\nMilliseconds from the epoch of 1970-01-01T00:00:00Z.\n"
    },
    "summary": {
      "type": "array",
      "items": {
        "type": "string",
        "description": "**A human-readable summary of the password analysis.**\n\nThis human readable summary is not intended to be parsed.\n"
      }
    },
    "total": {
      "type": "array",
      "description": "**The total penalty applied to each character.**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "penalty": {
            "type": "number",
            "description": "The total penalty applied to each character.\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.                \n"
          }
        }
      }
    },
    "words": {
      "type": "array",
      "description": "**The penalty applied to each character that has been found to be part of a word.**\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.\n",
      "items": {
        "type": "object",
        "properties": {
          "char": {
            "type": "string",
            "description": "The n-th character."
          },
          "l33tchar": {
            "type": "string",
            "description": "The n-th character after the l33t transformation."
          },
          "penalty": {
            "type": "number",
            "description": "The penalty applied to this character if it is part of a word.\n\nThe penalty is a float number in the range [0, 1]. Full penalty, 0; no penalty, 1.                \n"
          }
        }
      }
    }
  }
}