本文整理汇总了Python中BitVector.int_val方法的典型用法代码示例。如果您正苦于以下问题：Python BitVector.int_val方法的具体用法？Python BitVector.int_val怎么用？Python BitVector.int_val使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类BitVector的用法示例。
在下文中一共展示了BitVector.int_val方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: des
# 需要导入模块: import BitVector [as 别名]
# 或者: from BitVector import int_val [as 别名]
def des( s_box, input_file, output_file, keys ):
FILEOUT = open( output_file, 'ab' )
bv = BitVector( filename = input_file )
while (bv.more_to_read ):
bitvec = bv.read_bits_from_file( 64 ) ## assumes that your file has an integral
leng = bitvec.length() ## multiple of 8 bytes. If not, you must pad it.
pad = 64 - leng
bitvec.pad_from_right(pad)
[LE, RE] = bitvec.divide_into_two()
for i in range(16):
righty = RE.permute(expansion_permutation)
resultxor = righty ^ keys[i]
#s substitution
temp_bv = BitVector(size = 6)
row_bv = BitVector(size = 2)
col_bv = BitVector(size = 4)
ini=0
fin=6
inf=0
fif=4
final_bv = BitVector(size = 32)
for k in range(8):
temp_bv = resultxor[ini:fin]
row_bv[0:1] = temp_bv[0:1]
row_bv[1:2] = temp_bv[5:6]
col_bv = temp_bv[1:5]
row = row_bv.int_val()#get row
col = col_bv.int_val()#get column
#get stuff from sbox
newd = s_box[k][row][col]
temp = BitVector(intVal = newd)
temp_leng = temp.length()
lpad = 4 - temp_leng
temp.pad_from_left(lpad)
final_bv[inf:fif] = temp
inf = inf + 4
fif = fif + 4
ini = ini + 6#increase to the next thing
fin = fin + 6#increase to th next chunck
#permutation with p box
last_p = final_bv.permute(p_box_permutation)
#xor with le result = RE
temporal = RE
RE = last_p ^ LE
LE = temporal #le equals old re
#for loop done
#put left + right on output file
file_writebv = RE + LE
file_writebv.write_to_file(FILEOUT)示例2: RSA_decrypt
# 需要导入模块: import BitVector [as 别名]
# 或者: from BitVector import int_val [as 别名]
def RSA_decrypt(cipherfile, private_key, p, q):
print ("Decrypt bagin#######################################")
f = open(cipherfile,'r')
hexstr = f.read()
print (hexstr)
m = 0
n = 64
strlis = []
while(n <= len(hexstr)):
strlis.append(hexstr[m:n])
m += 64
n += 64
plains_bv = BitVector(size=0)
for substr in strlis:
package = BitVector(hexstring = substr)
print ("package")
print (package.get_hex_string_from_bitvector())
package_int = package.int_val()
Vp = pow(package_int,private_key[0],p)
Vq = pow(package_int,private_key[0],q)
pbv = BitVector(intVal=p)
qbv = BitVector(intVal=q)
Xp = q * qbv.multiplicative_inverse(pbv).int_val()
Xq = p * pbv.multiplicative_inverse(qbv).int_val()
plain_int = (Vp*Xp + Vq*Xq) % private_key[1]
plain_bv = BitVector(intVal=plain_int,size=128)
print ("plain_bv")
print (plain_bv.get_hex_string_from_bitvector())
plains_bv += plain_bv
fo = open("decrypted.txt",'w')
plains_bv.write_to_file(fo)示例3: print
# 需要导入模块: import BitVector [as 别名]
# 或者: from BitVector import int_val [as 别名]
print("\nBit vector constructed from integer 5678:")
print(bv) # 1011000101110
print("\nBit vector constructed from integer 0:")
bv = BitVector(intVal=0)
print(bv) # 0
print("\nBit vector constructed from integer 2:")
bv = BitVector(intVal=2)
print(bv) # 10
print("\nBit vector constructed from integer 3:")
bv = BitVector(intVal=3)
print(bv) # 11
print("\nBit vector constructed from integer 123456:")
bv = BitVector(intVal=123456)
print(bv) # 11110001001000000
print("\nInt value of the previous bit vector as computed by int_val():")
print(bv.int_val()) # 123456
print("\nInt value of the previous bit vector as computed by int():")
print(int(bv)) # 123456
# Construct a bit vector from a very large integer:
x = 12345678901234567890123456789012345678901234567890123456789012345678901234567890
bv = BitVector(intVal=x)
print("\nHere is a bit vector constructed from a very large integer:")
print(bv)
print("The integer value of the above bit vector is:%d" % int(bv))
# Construct a bit vector directly from a file-like object:
import io
x = "111100001111"
x = ""
if sys.version_info[0] == 3: