match length of keys to what PF_KEY enforces

src/etc/photuris/attributes.conf

@@ -1,15 +1,15 @@
 # Predefined keywords are AT_AH_ATTRIB, AT_ESP_ATTRIB
 # This is the default list, for VPN you can comment out
 # the AT_AH_ATTRIB section.
-AT_SHA1_IPMAC, 6, ident|auth, 48
-AT_MD5_IPMAC, 5, ident|auth, 48
+AT_SHA1_IPMAC, 6, ident|auth, 20
+AT_MD5_IPMAC, 5, ident|auth, 16
 AT_ESP_ATTRIB
 	AT_HMAC_FLAG, 254, , 
 	AT_BLF_NEW, 16, enc, 56
 	AT_3DES_NEW, 18, enc, 24
 	AT_CAST_NEW, 17, enc, 16
 #	AT_DES_CBC, 8, enc, 8
-#	AT_RIPEMD_IPMAC, 7, auth, 48
+#	AT_RIPEMD_IPMAC, 7, auth, 20
 	AT_SHA1_IPMAC
 	AT_MD5_IPMAC
 AT_AH_ATTRIB