Considering a case, when modulus is large and hard to factor, exponent
e=3 and there is a cipher-text which is created by padding plain-text with
A's from left and the ride side such that the real plain-text lies in the very center.
Which attacks could apply in such case. Low-Exponent Cube root attack fails. Does the knowledge of some part of the plain-text such as
A's become helpful ?