Editing Schnorr signature (section)

===Notation===
In the following,
*Exponentiation stands for repeated application of the group operation
*Juxtaposition stands for multiplication on the set of congruence classes or application of the group operation (as applicable)
*Subtraction stands for subtraction on the set of congruence classes
*<math>M \in \{0,1\}^*</math>, the set of finite bit strings
*<math>s, e, e_v, x, k \in \mathbb Z/q\mathbb Z</math>, the [[integers mod n|set of congruence classes modulo <math>q</math>]]
*<math>y, r, r_v \in G</math>.