LittleNellie/cipherscan
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don't retry protocols we know don't work

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When connection is unsuccessful with a given protocol, don't try it again
since we probably exhausted the ciphers supported by the protocol

makes scanning about 10% faster
This commit is contained in:
Hubert Kario 2014-07-12 01:30:17 +02:00 committed by Hubert Kario
parent 0e6c40ad83
commit 2e9c3fcc90
1 changed files with 8 additions and 0 deletions
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cipherscan
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@ -52,6 +52,8 @@ unset known_certs
declare -A known_certs
unset cert_checksums
declare -A cert_checksums
unset ok_protocols
declare -A ok_protocols
usage() {
echo -e "usage: $0 [-a|--allciphers] [-b|--benchmark] [--capath directory] [--saveca] [--savecrt directory] [-d|--delay seconds] [-D|--debug] [-j|--json] [-v|--verbose] [-o|--openssl file] [openssl s_client args] <target:port>
@ -126,6 +128,9 @@ test_cipher_on_target() {
certificates=""
for tls_version in "-ssl2" "-ssl3" "-tls1" "-tls1_1" "-tls1_2"
do
if [[ ${ok_protocols[$tls_version]} -eq 1 ]]; then
continue
fi
# sslv2 client hello doesn't support SNI extension
# in SSLv3 mode OpenSSL just ignores the setting so it's ok
# -status exception is ignored in SSLv2, go figure
@ -250,6 +255,7 @@ test_cipher_on_target() {
# parsing finished, report result
if [[ -z "$current_protocol" || "$current_cipher" == '(NONE)' ]]; then
ok_protocols["$tls_version"]=1
# connection failed, try again with next TLS version
continue
else
@ -617,6 +623,8 @@ results=()
# Call to the recursive loop that retrieves the cipher preferences
get_cipher_pref $CIPHERSUITE
unset ok_protocols
declare -A ok_protocols
test_serverside_ordering