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| author | Russ Cox <rsc@swtch.com> | 2010-03-11 18:03:53 -0800 |
|---|---|---|
| committer | Russ Cox <rsc@swtch.com> | 2010-03-11 18:03:53 -0800 |
| commit | ddfc031c3bb99a251eb927a71f7f77288c869de3 (patch) | |
| tree | 1bc0a831704447ef374bf9e8d4401f8715c9dbdd /src/cmd/auth/factotum/dsa.c | |
| parent | 8e4ac5f7fadafb278a0ef31d6082c30d6cdc8494 (diff) | |
| download | plan9port-ddfc031c3bb99a251eb927a71f7f77288c869de3.tar.gz plan9port-ddfc031c3bb99a251eb927a71f7f77288c869de3.tar.bz2 plan9port-ddfc031c3bb99a251eb927a71f7f77288c869de3.zip | |
factotum: double-check RSA/DSA keys when loading
R=rsc
http://codereview.appspot.com/463041
Diffstat (limited to 'src/cmd/auth/factotum/dsa.c')
| -rw-r--r-- | src/cmd/auth/factotum/dsa.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/cmd/auth/factotum/dsa.c b/src/cmd/auth/factotum/dsa.c index c0d199e4..ced10355 100644 --- a/src/cmd/auth/factotum/dsa.c +++ b/src/cmd/auth/factotum/dsa.c @@ -86,6 +86,10 @@ readdsapriv(Key *k) || (priv->pub.q=strtomp(a, nil, 16, nil))==nil) goto Error; strlwr(a); + if(!probably_prime(priv->pub.p, 20) && !probably_prime(priv->pub.q, 20)) { + werrstr("dsa: p or q not prime"); + goto Error; + } if((a=strfindattr(k->attr, "alpha"))==nil || (priv->pub.alpha=strtomp(a, nil, 16, nil))==nil) goto Error; |