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authorRichard Purdie <richard.purdie@linuxfoundation.org>2018-12-17 14:53:06 +0000
committerRichard Purdie <richard.purdie@linuxfoundation.org>2019-01-08 11:15:58 +0000
commit66f1b766997d53b4375fdd25719b1175f3828903 (patch)
tree370a67f7fa3901f6ae10c448d9bc6ee8e59d7b5e
parent4bed7a97198176503fe8c72d8dd7c36b28fc9dd1 (diff)
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data/siggen: Switch md5 -> sha256
Similarly to the codeparser change, change to sha256 hashes due to worries over collisions. The main impact of this change is slightly slower parsing time as well as longer sstate file names. Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--lib/bb/data.py2
-rw-r--r--lib/bb/data_smart.py2
-rw-r--r--lib/bb/siggen.py6
3 files changed, 5 insertions, 5 deletions
diff --git a/lib/bb/data.py b/lib/bb/data.py
index 6bcfcf46cc..29c2388038 100644
--- a/lib/bb/data.py
+++ b/lib/bb/data.py
@@ -436,7 +436,7 @@ def generate_dependency_hash(tasklist, gendeps, lookupcache, whitelist, fn):
if var is not None:
data = data + str(var)
k = fn + "." + task
- basehash[k] = hashlib.md5(data.encode("utf-8")).hexdigest()
+ basehash[k] = hashlib.sha256(data.encode("utf-8")).hexdigest()
taskdeps[task] = alldeps
return taskdeps, basehash
diff --git a/lib/bb/data_smart.py b/lib/bb/data_smart.py
index c342adaa0a..1f45cd975d 100644
--- a/lib/bb/data_smart.py
+++ b/lib/bb/data_smart.py
@@ -1074,4 +1074,4 @@ class DataSmart(MutableMapping):
data.update({i:value})
data_str = str([(k, data[k]) for k in sorted(data.keys())])
- return hashlib.md5(data_str.encode("utf-8")).hexdigest()
+ return hashlib.sha256(data_str.encode("utf-8")).hexdigest()
diff --git a/lib/bb/siggen.py b/lib/bb/siggen.py
index 5508523f2d..66aea79355 100644
--- a/lib/bb/siggen.py
+++ b/lib/bb/siggen.py
@@ -216,7 +216,7 @@ class SignatureGeneratorBasic(SignatureGenerator):
self.taints[k] = taint
logger.warning("%s is tainted from a forced run" % k)
- h = hashlib.md5(data.encode("utf-8")).hexdigest()
+ h = hashlib.sha256(data.encode("utf-8")).hexdigest()
self.taskhash[k] = h
#d.setVar("BB_TASKHASH_task-%s" % task, taskhash[task])
return h
@@ -650,7 +650,7 @@ def calc_basehash(sigdata):
if val is not None:
basedata = basedata + str(val)
- return hashlib.md5(basedata.encode("utf-8")).hexdigest()
+ return hashlib.sha256(basedata.encode("utf-8")).hexdigest()
def calc_taskhash(sigdata):
data = sigdata['basehash']
@@ -668,7 +668,7 @@ def calc_taskhash(sigdata):
else:
data = data + sigdata['taint']
- return hashlib.md5(data.encode("utf-8")).hexdigest()
+ return hashlib.sha256(data.encode("utf-8")).hexdigest()
def dump_sigfile(a):