Additionally generate SHA-1 fingerprints of raw BLISS subjectPublicKey
and subjectPublicKeyInfo objects.
Some basic functions used by the bliss_public_key class are shared
with the bliss_private_key class.
By pre-multiplying the input arrays with a linear phase the
fast multiplication via FFT and inverse FFT computes a negative
wrapped convolution corresponding to a modulus of x^n+1.