[Pkg-javascript-commits] [node-diffie-hellman] 12/88: generate primes

[Bastien Roucariès]

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rouca pushed a commit to branch master
in repository node-diffie-hellman.

commit f1d7cc3257525be9e1a34338271dc4de27a0196d
Author: Calvin Metcalf <cmetcalf at appgeo.com>
Date:   Wed Nov 5 07:18:46 2014 -0500

    generate primes
---
 .travis.yml      | 4 ++++
 generatePrime.js | 6 +++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..18ae2d8
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,4 @@
+language: node_js
+node_js:
+  - "0.11"
+  - "0.10"
diff --git a/generatePrime.js b/generatePrime.js
index 368eeef..42bb142 100644
--- a/generatePrime.js
+++ b/generatePrime.js
@@ -114,7 +114,11 @@ function findPrime(bits, crypto) {
   function generateRandom(bits) {
     var bytes = bits >> 3;
     bytes = bytes || 1;
-    return new BN(crypto.randomBytes(bits/8));
+    var out = new BN(crypto.randomBytes(bits/8));
+    while (out.bitLength() > bits) {
+      out.ishrn(1);
+    }
+    return out;
   }
   var num = generateRandom(bits);
 

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