diff --git a/gnupg/gpg.conf b/gnupg/gpg.conf
index dc786f6..87d02e5 100644
--- a/gnupg/gpg.conf
+++ b/gnupg/gpg.conf
@@ -4,7 +4,7 @@ no-greeting
 # use the agent for ssh/etc
 use-agent
 
-# key generation
+# key generation preferences
 personal-cipher-preferences AES256 AES192 AES CAST5
 personal-digest-preferences SHA512 SHA384 SHA256 SHA224
 personal-compress-preferences BZIP2 ZLIB ZIP Uncompressed
@@ -13,3 +13,11 @@ personal-compress-preferences BZIP2 ZLIB ZIP Uncompressed
 default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 BZIP2 ZLIB ZIP Uncompressed
 
 cert-digest-algo SHA512
+
+# increase hash count (makes bruteforcing take more time)
+#s2k-count 3538944
+s2k-count 6500000
+s2k-digest-algo SHA512
+
+# use long keyids because the short ones have collisions
+keyid-format 0xlong