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Problem with RSA

grarungrarun Posts: 40Member
I am trying to implement RSA algorithm.

But I am not able to implement the step

x = (a^b)mod(n)

because the value exceeds the maximum limit of 'long' data type for large values of a and b. Is there any method to optimise this step?
Please help me with that.

Comments

  • IDKIDK Posts: 1,784Member
    : I am trying to implement RSA algorithm.
    :
    : But I am not able to implement the step
    :
    : x = (a^b)mod(n)
    :
    : because the value exceeds the maximum limit of 'long' data type for large values of a and b. Is there any method to optimise this step?
    : Please help me with that.
    :
    Think of it like (a^3)%n == (a^1)%n + (a^2)%n
    I've done this, but I can't really remember the code or if the above is right...
  • grarungrarun Posts: 40Member
    : : I am trying to implement RSA algorithm.
    : :
    : : But I am not able to implement the step
    : :
    : : x = (a^b)mod(n)
    : :
    : : because the value exceeds the maximum limit of 'long' data type for large values of a and b. Is there any method to optimise this step?
    : : Please help me with that.
    : :
    : Think of it like (a^3)%n == (a^1)%n + (a^2)%n
    : I've done this, but I can't really remember the code or if the above is right...
    :

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