python 编写SM3算法
import struct
IV="7380166f 4914b2b9 172442d7 da8a0600 a96f30bc 163138aa e38dee4d b0fb0e4e"
IV = int(IV.replace(" ", ""), 16)
a = []
for i in range(0, 8):
a.append(0)
a[i] = (IV >> ((7 - i) * 32)) & 0xFFFFFFFF
IV = a
def out_hex(list1):
for i in list1:
print "%08x" % i,
print "\n",
def rotate_left(a, k):
k = k % 32
return ((a << k) & 0xFFFFFFFF) | ((a & 0xFFFFFFFF) >> (32 - k))
T_j = []
for i in range(0, 16):
T_j.append(0)
T_j[i] = 0x79cc4519
for i in range(16, 64):
T_j.append(0)
T_j[i] = 0x7a879d8a
def FF_j(X, Y, Z, j):
if 0 <= j and j < 16:
ret = X ^ Y ^ Z
elif 16 <= j and j < 64:
ret = (X & Y) | (X & Z) | (Y & Z)
return ret
def GG_j(X, Y, Z, j):
if 0 <= j and j < 16:
ret = X ^ Y ^ Z
elif 16 <= j and j < 64:
#ret = (X | Y) & ((2 ** 32 - 1 - X) | Z)
ret = (X & Y) | ((~ X) & Z)
return ret
def P_0(X):
return X ^ (rotate_left(X, 9)) ^ (rotate_left(X, 17))
def P_1(X):
return X ^ (rotate_left(X, 15)) ^ (rotate_left(X, 23))
def CF(V_i, B_i):
W = []
for j in range(0, 16):
W.append(0)
unpack_list = struct.unpack(">I", B_i[j*4:(j+1)*4])
W[j] = unpack_list[0]
for j in range(16, 68):
W.append(0)
W[j] = P_1(W[j-16] ^ W[j-9] ^ (rotate_left(W[j-3], 15))) ^ (rotate_left(W[j-13], 7)) ^ W[j-6]
str1 = "%08x" % W[j]
W_1 = []
for j in range(0, 64):
W_1.append(0)
W_1[j] = W[j] ^ W[j+4]
str1 = "%08x" % W_1[j]
A, B, C, D, E, F, G, H = V_i
"""
print "00",
out_hex([A, B, C, D, E, F, G, H])
"""
for j in range(0, 64):
SS1 = rotate_left(((rotate_left(A, 12)) + E + (rotate_left(T_j[j], j))) & 0xFFFFFFFF, 7)
SS2 = SS1 ^ (rotate_left(A, 12))
TT1 = (FF_j(A, B, C, j) + D + SS2 + W_1[j]) & 0xFFFFFFFF
TT2 = (GG_j(E, F, G, j) + H + SS1 + W[j]) & 0xFFFFFFFF
D = C
C = rotate_left(B, 9)
B = A
A = TT1
H = G
G = rotate_left(F, 19)
F = E
E = P_0(TT2)
A = A & 0xFFFFFFFF
B = B & 0xFFFFFFFF
C = C & 0xFFFFFFFF
D = D & 0xFFFFFFFF
E = E & 0xFFFFFFFF
F = F & 0xFFFFFFFF
G = G & 0xFFFFFFFF
H = H & 0xFFFFFFFF
"""
str1 = "%02d" % j
if str1[0] == "0":
str1 = ' ' + str1[1:]
print str1,
out_hex([A, B, C, D, E, F, G, H])
"""
V_i_1 = []
V_i_1.append(A ^ V_i[0])
V_i_1.append(B ^ V_i[1])
V_i_1.append(C ^ V_i[2])
V_i_1.append(D ^ V_i[3])
V_i_1.append(E ^ V_i[4])
V_i_1.append(F ^ V_i[5])
V_i_1.append(G ^ V_i[6])
V_i_1.append(H ^ V_i[7])
return V_i_1
def hash_msg(msg):
len1 = len(msg)
reserve1 = len1 % 64
msg = msg + chr(0x80)
reserve1 = reserve1 + 1
for i in range(reserve1, 56):
msg = msg + chr(0x00)
bit_length = (len1) * 8
bit_length_string = struct.pack(">Q", bit_length)
msg = msg + bit_length_string
#print len(msg)
group_count = len(msg) / 64
m_1 = B = []
for i in range(0, group_count):
B.append(0)
B[i] = msg[i*64:(i+1)*64]
V = []
V.append(0)
V[0] = IV
for i in range(0, group_count):
V.append(0)
V[i+1] = CF(V[i], B[i])
return V[i+1]
print "abc"
y = hash_msg("abc")
print "result: ",
out_hex(y)
print "abcd" * 16
y = hash_msg("abcd" * 16)
print "result: ",
out_hex(y)