Ocra interface

ochreGen

• ochreGen(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

  Description

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

  Returns

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

  Throws

  If an invalid parameter is entered.

  Throws

  If hsm returns an error.

  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.

  • Optional c: null | bigint

    Synchronized counter between the parties.

  • Optional ph: null | string

    String containing a hash known between the parties during the execution of the algorithm.

  • Optional s: null | string

    Set of strings containing information about the session in ascii encoding.

  • Optional ts: 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>