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pkg.py: update key with fast crypt implementation #141

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pkg.py: update key with fast crypt implementation #141

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20 changes: 13 additions & 7 deletions tools/ps3py/pkg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -233,13 +233,25 @@ def setContextNum(key, tmpnum):
key[0x3e] = ord(tmpchrs[6:7])
key[0x3f] = ord(tmpchrs[7:8])

def SHA1(data):
m = hashlib.sha1()
m.update(data)
return m.digest()

import pkgcrypt
pkgcrypt.register_sha1_callback(SHA1)

def fastcrypt(key, inbuf, length):
keystr = listToString(key)
result = pkgcrypt.pkgcrypt(keystr, inbuf, length)
key[:] = list(keystr)[:]
return result

def crypt(key, inbuf, length):
if not isinstance(key, list):
return ""
# Call our ultra fast c implemetation
return pkgcrypt.pkgcrypt(listToString(key), inbuf, length);
return fastcrypt(key, inbuf, length)

# Original python (slow) implementation
ret = ""
Expand All @@ -255,13 +267,7 @@ def crypt(key, inbuf, length):
manipulate(key)
length -= bytes_to_dump
return ret
def SHA1(data):
m = hashlib.sha1()
m.update(data)
return m.digest()

pkgcrypt.register_sha1_callback(SHA1)

def listPkg(filename):
with open(filename, 'rb') as fp:
data = fp.read()
Expand Down