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Is there alternative for Java's ' byte[] decodeFile = Base64.getMimeDecoder().decode(fileBase64); ' in Python?


Is there alternative for Java's ' byte[] decodeFile = Base64.getMimeDecoder().decode(fileBase64); ' in Python?

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Is there alternative for Java's ' byte[] decodeFile = Base64.getMimeDecoder().decode(fileBase64); ' in Python?
Tag : java , By : user181706
Date : December 01 2020, 04:47 PM

wish help you to fix your issue I am rewriting java code in python. The code works with different files through Spring. It opens such formats as JSON, DBF, RAR, XML and converts the data into String. There is always a line in every code: , As per the following line
byte[] decodeFile = Base64.getMimeDecoder().decode(fileBase64); #(1)
encodedValue = quopri.decodestring(<your encoded>, True)

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Is it normal that java.util.Base64.getMimeDecoder() accepts String longer than 76 characters?


Tag : java , By : sgmichelsen
Date : March 29 2020, 07:55 AM
will be helpful for those in need Inspecting the RFC2045 the only place in the Base64-section 6.8 that mentions the 76-char-limit states

base64 decode c++ fail end of line byte


Tag : cpp , By : jehammon
Date : March 29 2020, 07:55 AM
like below fixes the issue SOLVED : Problem solved, the problem was fwrite . Fix with ofstream write function

Decode Base64 string to byte array


Tag : python , By : Chandra P Singh
Date : March 29 2020, 07:55 AM
help you fix your problem You can use bytearray for exactly this. Possibly the binascii module and struct can be helpful, too.
import binascii
import struct

binstr=b"thisisunreadablebytes"

encoded=binascii.b2a_base64(binstr)
print encoded
print binascii.a2b_base64(encoded)

ba=bytearray(binstr)
print list(ba)

print binascii.b2a_hex(binstr)
print struct.unpack("21B",binstr)

Decode base64 encoded byte array to (negative) decimal value (Java to Python)


Tag : java , By : koder
Date : March 29 2020, 07:55 AM
To fix this issue When decoded in base64, '/bfbKNk=' gives the following 5 bytes: 0xfd 0xb7 0xdb 0x28 0xd9. In Python you just take the numeric value of 0xfdb7db28d9, which is indeed 1089711319257 in decimal.
But as the high order bit is set, the BigInteger class processes it as a negative number in two's-complement notation, say 0xfdb7db28d9 - 0x10000000000 = -9800308519
coded_string = "/bfbKNk="
bytes_val = base64.decodestring(coded_string)
bval = "".join("{0:08b}".format(ord(c)) for c in bytes_val)
intval = int(bval, 2)
if ord(bytes_val[0]) & 0x70 != 0:      # manually takes the two's complement
    intval -= int('1' + '00' * len(bytes_val), 16)
print intval
-9800308519
coded_string = "/bfbKNk="
bytes_val = base64.decodesbytes(coded_string.encode())
bval = "".join("{0:08b}".format(c) for c in bytes_val)
intval = int(bval, 2)
if bytes_val[0] & 0x70 != 0:           # manually takes the two's complement
    intval -= int('1' + '00' * len(bytes_val), 16)
print(intval)

Python base64 data decode and byte order convert


Tag : python , By : Steve Jones
Date : March 29 2020, 07:55 AM
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