def _transform(self, W):
for t in range(16, 80):
W[t] = _rotateLeft(
W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16], 1)
A = self.H0
B = self.H1
C = self.H2
D = self.H3
E = self.H4
"""
This loop is unrolled (via unroll_f_K) to gain some speed
for t in range(0, 80):
TEMP = _rotateLeft(A, 5) + f[t/20] + E + W[t] + K[t/20]
E = D
D = C
C = _rotateLeft(B, 30) & 0xffffffffL
B = A
A = TEMP & 0xffffffffL
"""
t0 = 0
for f, K in unroll_f_K:
if UNROLL_ALL:
rng20 = unroll_range_20
else:
rng20 = range(20)
for t in rng20:
TEMP = _rotateLeft(A, 5) + f(B, C, D) + E + W[t0+t] + K
E = D
D = C
C = _rotateLeft(B, 30)
B = A
A = TEMP
t0 += 20
self.H0 = self.H0 + A
self.H1 = self.H1 + B
self.H2 = self.H2 + C
self.H3 = self.H3 + D
self.H4 = self.H4 + E
def _transform(self, W):
for t in range(16, 80):
W[t] = _rotateLeft(W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16], 1)
A = self.H0
B = self.H1
C = self.H2
D = self.H3
E = self.H4
"""
This loop is unrolled (via unroll_f_K) to gain some speed
for t in range(0, 80):
TEMP = _rotateLeft(A, 5) + f[t/20] + E + W[t] + K[t/20]
E = D
D = C
C = _rotateLeft(B, 30) & 0xffffffffL
B = A
A = TEMP & 0xffffffffL
"""
t0 = 0
for f, K in unroll_f_K:
if UNROLL_ALL:
rng20 = unroll_range_20
else:
rng20 = range(20)
for t in rng20:
TEMP = _rotateLeft(A, 5) + f(B, C, D) + E + W[t0 + t] + K
E = D
D = C
C = _rotateLeft(B, 30)
B = A
A = TEMP
t0 += 20
self.H0 = self.H0 + A
self.H1 = self.H1 + B
self.H2 = self.H2 + C
self.H3 = self.H3 + D
self.H4 = self.H4 + E
def f(n, m):
return _rotateLeft(r_uint(n), m)
def f(n, m):
return _rotateLeft(r_uint(n), m)
