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authorlloyd <[email protected]>2014-04-10 14:01:17 +0000
committerlloyd <[email protected]>2014-04-10 14:01:17 +0000
commit5dc3912cc5cc11ef48c08c608c5724b25413c861 (patch)
tree0e9d0d14c59402d2383a50246135fc68fb22e38a /doc
parentda2efcb6e07677cc8b0860508efb5d07c4f8171d (diff)
Fix a bug in Miller-Rabin primality testing introduced in 1.8.3
where we chose a single random nonce and tested it repeatedly, rather than choosing new nonces each time. Reported by Jeff Marrison. Also remove a pointless comparison (also pointed out by Jeff) and add an initial test using a witness of 2.
Diffstat (limited to 'doc')
-rw-r--r--doc/relnotes/1_11_9.rst9
1 files changed, 8 insertions, 1 deletions
diff --git a/doc/relnotes/1_11_9.rst b/doc/relnotes/1_11_9.rst
index de88987eb..9bbeb1ba4 100644
--- a/doc/relnotes/1_11_9.rst
+++ b/doc/relnotes/1_11_9.rst
@@ -1,6 +1,13 @@
-Version 1.11.9, Not Yet Released
+Version 1.11.9, 2014-04-10
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ * Fix a bug in primality testing introduced in 1.8.3 which caused
+ only a single random base, rather than a sequence of random bases,
+ to be used in the Miller-Rabin test. This increased the probability
+ that a non-prime would be accepted, for instance a 1024 bit number
+ would be incorrectly classed as prime with probability around
+ 2^-40. Reported by Jeff Marrison.
+
* X.509 path validation now returns a set of all errors that occurred
during validation, rather than immediately returning the first
detected error. This prevents a seemingly innocuous error (such as