[Cryptech-Commits] [sw/libhal] branch master updated: Can't write bytes to JSON, only str

[git at cryptech.is]

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sra at hactrn.net pushed a commit to branch master
in repository sw/libhal.

The following commit(s) were added to refs/heads/master by this push:
     new fe62a7a  Can't write bytes to JSON, only str
fe62a7a is described below

commit fe62a7a3bfa0829c367433659d4bdf2a2b004d77
Author: Rob Austein <sra at hactrn.net>
AuthorDate: Sun Sep 6 00:06:57 2020 -0400

    Can't write bytes to JSON, only str
---
 cryptech_backup | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/cryptech_backup b/cryptech_backup
index 4292eaf..def2a31 100755
--- a/cryptech_backup
+++ b/cryptech_backup
@@ -149,10 +149,10 @@ def defcmd(subparsers, func):
 
 
 def b64(der):
-    return base64.b64encode(der).splitlines()
+    return base64.b64encode(der).decode().splitlines()
 
 def b64join(lines):
-    return base64.b64decode("".join(lines))
+    return base64.b64decode("".join(lines).encode())
 
 
 def cmd_setup(args, hsm):
@@ -350,7 +350,7 @@ class AESKeyWrapWithPadding(object):
         if len(C) % 8 != 0:
             raise self.UnwrapError("Ciphertext length {} is not an integral number of blocks"
                                    .format(len(C)))
-        n = (len(C) / 8) - 1
+        n = (len(C) // 8) - 1
         R = [C[i : i + 8] for i in range(0, len(C), 8)]
         if n == 1:
             R[0], R[1] = self._decrypt(R[0], R[1])
@@ -368,9 +368,8 @@ class AESKeyWrapWithPadding(object):
             raise self.UnwrapError("Length encoded in AIV out of range: m {}, n {}".format(m, n))
         R = b"".join(R[1:])
         assert len(R) ==  8 * n
-        if any(r != b"\x00" for r in R[m:]):
-            raise self.UnwrapError("Nonzero trailing bytes {}".format(
-                binascii.hexlify(R[m:]).decode("ascii")))
+        if R[m:].strip(b"\x00"):
+            raise self.UnwrapError("Nonzero trailing bytes 0x{}".format(binascii.hexlify(R[m:]).decode("ascii")))
         return R[:m]
 
 
@@ -415,7 +414,7 @@ class SoftKEKEK(object):
         return AESKeyWrapWithPadding(PBKDF2(
             password = getpass.getpass("KEKEK Passphrase: "),
             salt     = salt,
-            dkLen    = keylen/8,
+            dkLen    = keylen//8,
             count    = iterations,
             prf      = lambda p, s: HMAC.new(p, s, SHA256).digest()))
 

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