caches: don't use deprecated md5 for key calculation.

- md5 isn't a valiable option for compliance reasons

rhodecode/lib/caches.py

@@ -26,7 +26,7 b' import threading'
 from beaker.cache import _cache_decorate, cache_regions, region_invalidate
 from sqlalchemy.exc import IntegrityError
 
-from rhodecode.lib.utils import safe_str, md5
+from rhodecode.lib.utils import safe_str, sha1
 from rhodecode.model.db import Session, CacheKey
 
 log = logging.getLogger(__name__)
@@ -141,7 +141,7 b' def compute_key_from_params(*args):'
     """
     Helper to compute key from given params to be used in cache manager
     """
-    return md5("_".join(map(safe_str, args)))
+    return sha1("_".join(map(safe_str, args)))
 
 
 def get_repo_namespace_key(prefix, repo_name):

rhodecode/lib/utils.py

@@ -48,7 +48,7 b' from rhodecode.lib.vcs.backends.base imp'
 from rhodecode.lib.vcs.exceptions import VCSError
 from rhodecode.lib.vcs.utils.helpers import get_scm, get_scm_backend
 from rhodecode.lib.utils2 import (
-    safe_str, safe_unicode, get_current_rhodecode_user, md5)
+    safe_str, safe_unicode, get_current_rhodecode_user, md5, sha1)
 from rhodecode.model import meta
 from rhodecode.model.db import (
     Repository, User, RhodeCodeUi, UserLog, RepoGroup, UserGroup)

rhodecode/lib/utils2.py

@@ -56,6 +56,14 b' def md5_safe(s):'
     return md5(safe_str(s))
 
 
+def sha1(s):
+    return hashlib.sha1(s).hexdigest()
+
+
+def sha1_safe(s):
+    return sha1(safe_str(s))
+
+
 def __get_lem(extra_mapping=None):
     """
     Get language extension map based on what's inside pygments lexers