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diff --git a/pipermail/pycrypto/2009q3/000127.html b/pipermail/pycrypto/2009q3/000127.html new file mode 100644 index 0000000..224843a --- /dev/null +++ b/pipermail/pycrypto/2009q3/000127.html @@ -0,0 +1,106 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML> + <HEAD> + <TITLE> [pycrypto] ERROR: testRsaUnversionedSignAndVerify failed + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:pycrypto%40lists.dlitz.net?Subject=%5Bpycrypto%5D%20ERROR%3A%20testRsaUnversionedSignAndVerify%20failed&In-Reply-To=20090821015543.GA22301%40rivest.dlitz.net"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="000116.html"> + <LINK REL="Next" HREF="000117.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[pycrypto] ERROR: testRsaUnversionedSignAndVerify failed</H1> + <B>Dwayne C. Litzenberger</B> + <A HREF="mailto:pycrypto%40lists.dlitz.net?Subject=%5Bpycrypto%5D%20ERROR%3A%20testRsaUnversionedSignAndVerify%20failed&In-Reply-To=20090821015543.GA22301%40rivest.dlitz.net" + TITLE="[pycrypto] ERROR: testRsaUnversionedSignAndVerify failed">dlitz at dlitz.net + </A><BR> + <I>Fri Aug 28 10:33:05 CST 2009</I> + <P><UL> + <LI>Previous message: <A HREF="000116.html">[pycrypto] ERROR: testRsaUnversionedSignAndVerify failed +</A></li> + <LI>Next message: <A HREF="000117.html">[pycrypto] ERROR: testRsaUnversionedSignAndVerify failed +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#127">[ date ]</a> + <a href="thread.html#127">[ thread ]</a> + <a href="subject.html#127">[ subject ]</a> + <a href="author.html#127">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>On Thu, Aug 20, 2009 at 09:55:43PM -0400, Dwayne C. Litzenberger wrote: +><i>You can use this code. I hereby release it into the public domain: +</I>><i> +</I>><i>try: +</I>><i> from Crypto import Random +</I>><i> _rng_instance = Random.new() +</I>><i>except ImportError: +</I>><i> class RandomStub: +</I>><i> def read(n): +</I>><i> return os.urandom(n) +</I>><i> _rng_instance = RandomStub() +</I>><i> +</I>><i>def RandBytes(n): +</I>><i> """Return n random bytes.""" +</I>><i> return _rng_instance.read(n) +</I> +Correction: You need not create a global _rng_instance singleton, since +Random.new() already does this for you. Use this code instead: + + # Define the RandBytes function using one of the following + # random sources (in preferential order): + # 1. Crypto.Random + # 2. os.urandom + try: + from Crypto.Random import get_random_bytes as RandBytes + except ImportError: + from os import urandom as RandBytes + +If you want support for versions of Python prior to 2.4 on Unix, you can do +this: + + # Define the RandBytes function using one of the following + # random sources (in preferential order): + # 1. Crypto.Random + # 2. os.urandom + # 3. /dev/urandom + try: + from Crypto.Random import get_random_bytes as RandBytes + except ImportError: + try: + from os import urandom as RandBytes + except ImportError: + RandBytes = open("/dev/urandom", "rb").read + +In any case, RandomPool should not be used at all, ever. + +The code above is released into the public domain (copyright abandoned). + +-- +Dwayne C. Litzenberger <<A HREF="http://lists.dlitz.net/cgi-bin/mailman/listinfo/pycrypto">dlitz at dlitz.net</A>> + Key-signing key - 19E1 1FE8 B3CF F273 ED17 4A24 928C EC13 39C2 5CF7 +</PRE> + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="000116.html">[pycrypto] ERROR: testRsaUnversionedSignAndVerify failed +</A></li> + <LI>Next message: <A HREF="000117.html">[pycrypto] ERROR: testRsaUnversionedSignAndVerify failed +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#127">[ date ]</a> + <a href="thread.html#127">[ thread ]</a> + <a href="subject.html#127">[ subject ]</a> + <a href="author.html#127">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="http://lists.dlitz.net/cgi-bin/mailman/listinfo/pycrypto">More information about the pycrypto +mailing list</a><br> +</body></html> |