Ocra interface

ochreGen

• ocraGen(
      sk: string,
      q: string,
      suite: string,
      len: null | number,
      c?: null | bigint,
      ph?: null | string,
      s?: null | string,
      ts?: null | bigint,
  ): Promise<string>

  OCRA: OATH Challenge-Response Algorithm

  It generates a challenge-response based on OCRA: OATH Challenge-Response Algorithm.

  Parameters

  • sk: string

    Cryptographic key shared by both parties.
  • q: string

    Challenge shared between the parties coded in hexadecimal.
  • suite: string

    String containing the value that represents the suite of operations to calculate an OCRA response.
  • len: null | number

    Output csp size, values must be in the range 6 to 8.
  • Optionalc: null | bigint

    Synchronized counter between the parties.
  • Optionalph: null | string

    String containing a hash known between the parties during the execution of the algorithm.
  • Optionals: null | string

    Set of strings containing information about the session in ascii encoding.
  • Optionalts: null | bigint

    Number of time intervals (seconds, minutes, hours or days, depending on the granularity specified) since midnight UTC on January 1, 1970 [UT].

  Returns Promise<string>

  Returns a safety-critical parameter with the size entered in P.

  Throws

  If an invalid parameter is entered.

  Throws

  If hsm returns an error.

  See

  Example code: Creating a One Time Password (OTP) with OCRA function