BigAssNumber

Header Only class to handle (most likely quite poorly) cryptographic numbers.

Requirements

C++17

How To

Copy the .h file somewhere. Include it. Profit.

Class is templated over how many bytes you want.

BigInt<8> myBigInt(42) for 42 as an 8 bytes (64 bits) integer.

BigInt64 myBigInt(42) is an alias.

BigInt<16> myBigInt("12345678901234567891234567890123456789")

BigInt<32> myBigInt=BigInt<32>::power_of_two(200)

Nice things

BigInt<BYTES>::pow_mod(a, n, m) to compute a^n[m] with a, n and m of type BigInt<BYTES>.

a.mult_mod(b, m) to compute (a * b) % m

BigInt64::rand(), BigInt64::rand(max), BigInt64::rand(min, max)

Untemplated classes

BigIng64, BigIng128, BigIng256, BigIng512 as aliases for BigInt<8>, BigInt<16>, BigInt<32>, BigInt<64>