Random: Add Crypto.Random.get_random_bytes()

This should allow people to use something like this if they want
backwards-compatibility:

try:
     from Crypto.Random import get_random_bytes
except ImportError:
     try:
         from os import urandom as get_random_bytes
     except ImportError:
         get_random_bytes = open("/dev/urandom", "rb").read

2 files changed, 8 insertions, 0 deletions

diff --git a/lib/Crypto/Random/_UserFriendlyRNG.py b/lib/Crypto/Random/_UserFriendlyRNG.py
index 104750c..58b2246 100644
--- a/lib/Crypto/Random/_UserFriendlyRNG.py
+++ b/lib/Crypto/Random/_UserFriendlyRNG.py
@@ -198,4 +198,8 @@ def new():
 def reinit():
     _get_singleton().reinit()
 
+def get_random_bytes(n):
+    """Return the specified number of cryptographically-strong random bytes."""
+    return _get_singleton().read(n)
+
 # vim:set ts=4 sw=4 sts=4 expandtab:
diff --git a/lib/Crypto/Random/__init__.py b/lib/Crypto/Random/__init__.py
index 6230809..0d0e6f2 100644
--- a/lib/Crypto/Random/__init__.py
+++ b/lib/Crypto/Random/__init__.py
@@ -36,4 +36,8 @@ def atfork():
     """Call this whenever you call os.fork()"""
     _UserFriendlyRNG.reinit()
 
+def get_random_bytes(n):
+    """Return the specified number of cryptographically-strong random bytes."""
+    return _UserFriendlyRNG.get_random_bytes(n)
+
 # vim:set ts=4 sw=4 sts=4 expandtab: