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bitbake: data/siggen: Switch md5 -> sha256

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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.

(Bitbake rev: 66f1b766997d53b4375fdd25719b1175f3828903)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2018-12-17 14:53:06 +00:00
parent 941c5ddd19
commit f008c24dab
3 changed files with 5 additions and 5 deletions
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2
bitbake/lib/bb/data.py
View File

@@ -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

2
bitbake/lib/bb/data_smart.py
View File

@@ -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()

6
bitbake/lib/bb/siggen.py
View File

@@ -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):