def enc_file_generator(self, user, decrypter, dFile, fileId=None, publicShareId=None):
endOfFile = False
readData = dFile.read(1024*8)
data = decrypter.decrypt(readData)
#If the data is less than one block long, just process it and send it out
#try:
if len(data) < (1024*8):
padding = int(str(data[-1:]),16)
#A 0 represents that the file had a multiple of 16 bytes, and 16 bytes of padding were added
if padding==0:
padding=16
endOfFile = True
FileService.file_download_complete(user, fileId, publicShareId)
yield data[:len(data)-padding]
else:
#For multiblock files
while True:
if endOfFile:
FileService.file_download_complete(user, fileId, publicShareId)
break
next_data = decrypter.decrypt(dFile.read(1024*8))
if (next_data is not None and next_data != "") and not len(next_data)<(1024*8):
yData = data
data = next_data
yield yData
#This prevents padding going across block boundaries by aggregating the last two blocks and processing
#as a whole if the next block is less than a full block (signifying end of file)
else:
data = data + next_data
padding = int(str(data[-1:]),16)
#A 0 represents that the file had a multiple of 16 bytes, and 16 bytes of padding were added
if padding==0:
padding=16
endOfFile = True
yield data[:len(data)-padding]
def enc_file_generator(self,
user,
decrypter,
dFile,
fileId=None,
publicShareId=None):
endOfFile = False
readData = dFile.read(1024 * 8)
data = decrypter.decrypt(readData)
#If the data is less than one block long, just process it and send it out
#try:
if len(data) < (1024 * 8):
padding = int(str(data[-1:]), 16)
#A 0 represents that the file had a multiple of 16 bytes, and 16 bytes of padding were added
if padding == 0:
padding = 16
endOfFile = True
FileService.file_download_complete(user, fileId, publicShareId)
yield data[:len(data) - padding]
else:
#For multiblock files
while True:
if endOfFile:
FileService.file_download_complete(user, fileId,
publicShareId)
break
next_data = decrypter.decrypt(dFile.read(1024 * 8))
if (next_data is not None and
next_data != "") and not len(next_data) < (1024 * 8):
yData = data
data = next_data
yield yData
#This prevents padding going across block boundaries by aggregating the last two blocks and processing
#as a whole if the next block is less than a full block (signifying end of file)
else:
data = data + next_data
padding = int(str(data[-1:]), 16)
#A 0 represents that the file had a multiple of 16 bytes, and 16 bytes of padding were added
if padding == 0:
padding = 16
endOfFile = True
yield data[:len(data) - padding]
