Generating Random Key Numbers C

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I'm looking for a way to generate large random numbers on the order of 2^64 in C. (100000000 - 999999999), to use in a public key encryption algorithm (as p and q). I do not want to generate a number smaller than 2^64 (that is, smaller than 100000000). Is there anything that could help me to do this? Using modulo may introduce bias into the random numbers, depending on the random number generator. See this question for more info. Of course, it's perfectly possible to get repeating numbers in a random sequence. Try some C11 features for better distribution. I know there are a lot of links and tutorials on this topic, but I can't seem to write working code to produce a random number from 1-6 (For a Petals.

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Description

Generating Random Key Numbers C Code

The C library function int rand(void) returns a pseudo-random number in the range of 0 to RAND_MAX.

RAND_MAX is a constant whose default value may vary between implementations but it is granted to be at least 32767.

Random Number C Program

Declaration

Generate license key vb.net. Following is the declaration for rand() function.

Parameters

  • NA

C Random Numbers Between

Return Value

This function returns an integer value between 0 and RAND_MAX.

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Example

Random Number Generator C Program

The following example shows the usage of rand() function.

Generating Random Key Numbers C Language

Let us compile and run the above program that will produce the following result −

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