Parsing Bitcoin binary data file with Python
1
$begingroup$
The script parses Bitcoin database (blkXXXXX.dat) files directly from raw binary to txt human readable view. And I think about how to encrease the speed of processing.
Can anyone suggest how to improve the performance? I know that the best way to encrease performance is to write this on C or C++, but what about Python? Also, is this style of programming is good?
Example cut from code (full code avaible here):
import os
import hashlib
def reverse(input):
L = len(input)
if (L % 2) != 0:
return None
else:
Res = ''
L = L // 2
for i in range(L):
T = input[i*2] + input[i*2+1]
Res = T + Res
T = ''
return (Res);
f = open('blk01234.dat','rb')
tmpHex = ''
fSize = os.path.getsize(t)
while f.tell() != fSize:
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Block size = ' + tmpHex)
tmpHex = ''
tmpPos3 = f.tell()
while f.tell() != tmpPos3 + 80:
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = tmpHex + b
tmpHex = tmpHex.decode('hex')
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = tmpHex.encode('hex')
tmpHex = tmpHex.upper()
tmpHex = reverse(tmpHex)
resList.append('SHA256 hash of the current block hash = ' + tmpHex)
f.seek(tmpPos3,0)
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Version number = ' + tmpHex)
tmpHex = ''
#.....next part of code
f.close()
f = open('blk01234.txt','w')
for j in resList:
f.write(j + 'n')
f.close()
python performance serialization file-structure cryptocurrency
edited 11 mins ago
200_success
129k15153415
asked 19 mins ago
Norman VoltNorman Volt
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
1
$begingroup$
The script parses Bitcoin database (blkXXXXX.dat) files directly from raw binary to txt human readable view. And I think about how to encrease the speed of processing.
Can anyone suggest how to improve the performance? I know that the best way to encrease performance is to write this on C or C++, but what about Python? Also, is this style of programming is good?
Example cut from code (full code avaible here):
import os
import hashlib
def reverse(input):
L = len(input)
if (L % 2) != 0:
return None
else:
Res = ''
L = L // 2
for i in range(L):
T = input[i*2] + input[i*2+1]
Res = T + Res
T = ''
return (Res);
f = open('blk01234.dat','rb')
tmpHex = ''
fSize = os.path.getsize(t)
while f.tell() != fSize:
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Block size = ' + tmpHex)
tmpHex = ''
tmpPos3 = f.tell()
while f.tell() != tmpPos3 + 80:
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = tmpHex + b
tmpHex = tmpHex.decode('hex')
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = tmpHex.encode('hex')
tmpHex = tmpHex.upper()
tmpHex = reverse(tmpHex)
resList.append('SHA256 hash of the current block hash = ' + tmpHex)
f.seek(tmpPos3,0)
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Version number = ' + tmpHex)
tmpHex = ''
#.....next part of code
f.close()
f = open('blk01234.txt','w')
for j in resList:
f.write(j + 'n')
f.close()
python performance serialization file-structure cryptocurrency
edited 11 mins ago
200_success
129k15153415
asked 19 mins ago
Norman VoltNorman Volt
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
1
1
1
$begingroup$
The script parses Bitcoin database (blkXXXXX.dat) files directly from raw binary to txt human readable view. And I think about how to encrease the speed of processing.
Can anyone suggest how to improve the performance? I know that the best way to encrease performance is to write this on C or C++, but what about Python? Also, is this style of programming is good?
Example cut from code (full code avaible here):
import os
import hashlib
def reverse(input):
L = len(input)
if (L % 2) != 0:
return None
else:
Res = ''
L = L // 2
for i in range(L):
T = input[i*2] + input[i*2+1]
Res = T + Res
T = ''
return (Res);
f = open('blk01234.dat','rb')
tmpHex = ''
fSize = os.path.getsize(t)
while f.tell() != fSize:
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Block size = ' + tmpHex)
tmpHex = ''
tmpPos3 = f.tell()
while f.tell() != tmpPos3 + 80:
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = tmpHex + b
tmpHex = tmpHex.decode('hex')
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = tmpHex.encode('hex')
tmpHex = tmpHex.upper()
tmpHex = reverse(tmpHex)
resList.append('SHA256 hash of the current block hash = ' + tmpHex)
f.seek(tmpPos3,0)
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Version number = ' + tmpHex)
tmpHex = ''
#.....next part of code
f.close()
f = open('blk01234.txt','w')
for j in resList:
f.write(j + 'n')
f.close()
python performance serialization file-structure cryptocurrency
edited 11 mins ago
200_success
129k15153415
asked 19 mins ago
Norman VoltNorman Volt
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
The script parses Bitcoin database (blkXXXXX.dat) files directly from raw binary to txt human readable view. And I think about how to encrease the speed of processing.
Can anyone suggest how to improve the performance? I know that the best way to encrease performance is to write this on C or C++, but what about Python? Also, is this style of programming is good?
Example cut from code (full code avaible here):
import os
import hashlib
def reverse(input):
L = len(input)
if (L % 2) != 0:
return None
else:
Res = ''
L = L // 2
for i in range(L):
T = input[i*2] + input[i*2+1]
Res = T + Res
T = ''
return (Res);
f = open('blk01234.dat','rb')
tmpHex = ''
fSize = os.path.getsize(t)
while f.tell() != fSize:
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Block size = ' + tmpHex)
tmpHex = ''
tmpPos3 = f.tell()
while f.tell() != tmpPos3 + 80:
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = tmpHex + b
tmpHex = tmpHex.decode('hex')
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = hashlib.new('sha256', tmpHex).digest()
tmpHex = tmpHex.encode('hex')
tmpHex = tmpHex.upper()
tmpHex = reverse(tmpHex)
resList.append('SHA256 hash of the current block hash = ' + tmpHex)
f.seek(tmpPos3,0)
tmpHex = ''
for j in range(4):
b = f.read(1)
b = b.encode('hex').upper()
tmpHex = b + tmpHex
resList.append('Version number = ' + tmpHex)
tmpHex = ''
#.....next part of code
f.close()
f = open('blk01234.txt','w')
for j in resList:
f.write(j + 'n')
f.close()
python performance serialization file-structure cryptocurrency
python performance serialization file-structure cryptocurrency
edited 11 mins ago
200_success
129k15153415
asked 19 mins ago
Norman VoltNorman Volt
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 11 mins ago
200_success
129k15153415
asked 19 mins ago
Norman VoltNorman Volt
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 11 mins ago
200_success
129k15153415
edited 11 mins ago
200_success
129k15153415
edited 11 mins ago
200_success
129k15153415
129k15153415
asked 19 mins ago
Norman VoltNorman Volt
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 19 mins ago
Norman VoltNorman Volt
1063
asked 19 mins ago
Norman VoltNorman Volt
1063
1063
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Norman Volt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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