R=IntegerModRing(65536)
express=u"薛鹏翔"
ex_code=get_code(express)
if len(ex_code)%2==1:
ex_code.append(0)
en_key=matrix(R,[[1,2],[3,5]])
de_key=en_key.inverse()
ci_code=[]
for k in range(0,len(ex_code),2):
m=en_key*vector(R,[ex_code[k],ex_code[k+1]])
ci_code.append(int(m[0]))
ci_code.append(int(m[1]))
ci_code
ciphertext=get_string(ci_code)
print ciphertext