keygen.c


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#include<stdio.h>
#include<openssl/rand.h>

int main(int argc, char* argv[]) {
	long long int len = strtoll(argv[1], NULL, 10);
	unsigned char key[len];
	RAND_bytes(key, len);
	FILE* file = fopen(argv[2], "w");
	fwrite(key, len, 1, file);
	fclose(file);
	printf("Created key file %s of %lli bytes \n", argv[2], len);

	return 0;
}