mirror of
https://github.com/drwetter/testssl.sh.git
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Merge pull request #1853 from dcooper16/cleanup_hex2binary
Cleanup conversion from ASCII-HEX to binary
This commit is contained in:
Dirk Wetter
GitHub
commit
2a6eb51e1d
135
testssl.sh
135
testssl.sh
@ -357,6 +357,7 @@ HAS_IDN=false
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HAS_IDN2=false
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HAS_AVAHIRESOLVE=false
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HAS_DIG_NOIDNOUT=false
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HAS_XXD=false
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OSSL_CIPHERS_S=""
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PORT=443 # unless otherwise auto-determined, see below
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@ -784,15 +785,6 @@ hex2dec() {
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echo $((16#$1))
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}
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# convert 414243 into ABC
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hex2ascii() {
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for (( i=0; i<${#1}; i+=2 )); do
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# 2>/dev/null added because 'warning: command substitution: ignored null byte in input'
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# --> didn't help though
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printf "\x${1:$i:2}" 2>/dev/null
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done
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}
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# convert decimal number < 256 to hex
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dec02hex() {
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printf "x%02x" "$1"
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@ -1959,7 +1951,7 @@ check_revocation_ocsp() {
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grep -q "\-\-\-\-\-BEGIN CERTIFICATE\-\-\-\-\-" $TEMPDIR/intermediatecerts.pem || return 0
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tmpfile=$TEMPDIR/${NODE}-${NODEIP}.${uri##*\/} || exit $ERR_FCREATE
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if [[ -n "$stapled_response" ]]; then
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asciihex_to_binary "$stapled_response" > "$TEMPDIR/stapled_ocsp_response.dd"
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hex2binary "$stapled_response" > "$TEMPDIR/stapled_ocsp_response.dd"
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$OPENSSL ocsp -no_nonce -respin "$TEMPDIR/stapled_ocsp_response.dd" \
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-issuer $TEMPDIR/hostcert_issuer.pem -verify_other $TEMPDIR/intermediatecerts.pem \
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-CAfile <(cat $ADDTL_CA_FILES "$GOOD_CA_BUNDLE") -cert $HOSTCERT -text &> "$tmpfile"
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@ -2070,35 +2062,41 @@ fi
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# Print $arg1 in binary format. arg1: An ASCII-HEX string
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#
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asciihex_to_binary() {
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local string="$1"
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local -i len
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local -i i ip2 ip4 ip6 ip8 ip10 ip12 ip14
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local -i remainder
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# The string represented by $arg1 may be binary data (a certificate or public
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# key) or a text string (e.g., ASCII-encoded text).
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hex2binary() {
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local s="$1"
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local -i len remainder
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len=${#string}
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len=${#s}
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[[ $len%2 -ne 0 ]] && return 1
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for (( i=0; i <= len-16 ; i+=16 )); do
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ip2=$((i+2)); ip4=$((i+4)); ip6=$((i+6)); ip8=$((i+8)); ip10=$((i+10)); ip12=$((i+12)); ip14=$((i+14))
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printf -- "\x${string:i:2}\x${string:ip2:2}\x${string:ip4:2}\x${string:ip6:2}\x${string:ip8:2}\x${string:ip10:2}\x${string:ip12:2}\x${string:ip14:2}"
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done
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if "$HAS_XXD"; then
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xxd -r -p <<< "$s"
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else
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for (( i=0; i <= len-16 ; i+=16 )); do
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printf -- "\x${s:i:2}\x${s:$((i+2)):2}\x${s:$((i+4)):2}\x${s:$((i+6)):2}\x${s:$((i+8)):2}\x${s:$((i+10)):2}\x${s:$((i+12)):2}\x${s:$((i+14)):2}"
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done
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ip2=$((i+2)); ip4=$((i+4)); ip6=$((i+6)); ip8=$((i+8)); ip10=$((i+10)); ip12=$((i+12)); ip14=$((i+14))
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remainder=$len-$i
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case $remainder in
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2) printf -- "\x${string:i:2}" ;;
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4) printf -- "\x${string:i:2}\x${string:ip2:2}" ;;
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6) printf -- "\x${string:i:2}\x${string:ip2:2}\x${string:ip4:2}" ;;
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8) printf -- "\x${string:i:2}\x${string:ip2:2}\x${string:ip4:2}\x${string:ip6:2}" ;;
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10) printf -- "\x${string:i:2}\x${string:ip2:2}\x${string:ip4:2}\x${string:ip6:2}\x${string:ip8:2}" ;;
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12) printf -- "\x${string:i:2}\x${string:ip2:2}\x${string:ip4:2}\x${string:ip6:2}\x${string:ip8:2}\x${string:ip10:2}" ;;
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14) printf -- "\x${string:i:2}\x${string:ip2:2}\x${string:ip4:2}\x${string:ip6:2}\x${string:ip8:2}\x${string:ip10:2}\x${string:ip12:2}" ;;
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esac
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remainder=$((len-i))
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case $remainder in
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2) printf -- "\x${s:i:2}" ;;
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4) printf -- "\x${s:i:2}\x${s:$((i+2)):2}" ;;
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6) printf -- "\x${s:i:2}\x${s:$((i+2)):2}\x${s:$((i+4)):2}" ;;
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8) printf -- "\x${s:i:2}\x${s:$((i+2)):2}\x${s:$((i+4)):2}\x${s:$((i+6)):2}" ;;
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10) printf -- "\x${s:i:2}\x${s:$((i+2)):2}\x${s:$((i+4)):2}\x${s:$((i+6)):2}\x${s:$((i+8)):2}" ;;
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12) printf -- "\x${s:i:2}\x${s:$((i+2)):2}\x${s:$((i+4)):2}\x${s:$((i+6)):2}\x${s:$((i+8)):2}\x${s:$((i+10)):2}" ;;
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14) printf -- "\x${s:i:2}\x${s:$((i+2)):2}\x${s:$((i+4)):2}\x${s:$((i+6)):2}\x${s:$((i+8)):2}\x${s:$((i+10)):2}\x${s:$((i+12)):2}" ;;
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esac
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fi
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return 0
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}
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# convert 414243 into ABC
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hex2ascii() {
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hex2binary $1
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}
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# arg1: text string
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# Output a comma-separated ASCII-HEX string representation of the input string.
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string_to_asciihex() {
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@ -8026,7 +8024,7 @@ compare_server_name_to_cert() {
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j+=2
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fi
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if [[ $len1 -ne 0 ]]; then
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san="$(asciihex_to_binary "${dercert:j:len1}")"
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san="$(hex2binary "${dercert:j:len1}")"
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if [[ "${dercert:i:20}" == "06082B06010505070805" ]]; then
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xmppaddr+="$san "
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else
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@ -8192,7 +8190,7 @@ etsi_ets_visibility_info() {
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# Next is the 10-byte fingerprint, encoded as an OCTET STRING (04)
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[[ "${dercert:j:4}" == 040A ]] || continue
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j+=4
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fingerprint[nr_visnames]="$(asciihex_to_binary "${dercert:j:20}")"
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fingerprint[nr_visnames]="$(hex2binary "${dercert:j:20}")"
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j+=20
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# Finally comes the access description, encoded as a UTF8String (0C).
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[[ "${dercert:j:2}" == 0C ]] || continue
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@ -8209,7 +8207,7 @@ etsi_ets_visibility_info() {
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len1=2*0x${dercert:j:2}
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j+=2
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fi
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access_description[nr_visnames]=""$(asciihex_to_binary "${dercert:j:len1}")""
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access_description[nr_visnames]=""$(hex2binary "${dercert:j:len1}")""
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nr_visnames+=1
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done
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fi
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@ -11319,7 +11317,7 @@ get_dh_ephemeralkey() {
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len1="82$(printf "%04x" $((i/2)))"
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fi
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key_bitstring="30${len1}${dh_param}${dh_y}"
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key_bitstring="$(asciihex_to_binary "$key_bitstring" | $OPENSSL pkey -pubin -inform DER 2> $ERRFILE)"
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key_bitstring="$(hex2binary "$key_bitstring" | $OPENSSL pkey -pubin -inform DER 2> $ERRFILE)"
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[[ -z "$key_bitstring" ]] && return 1
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tm_out "$key_bitstring"
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return 0
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@ -11424,7 +11422,7 @@ parse_sslv2_serverhello() {
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certificate_len=2*$(hex2dec "$v2_hello_cert_length")
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if [[ "$v2_cert_type" == "01" ]] && [[ "$v2_hello_cert_length" != "00" ]]; then
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asciihex_to_binary "${v2_hello_ascii:26:certificate_len}" | \
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hex2binary "${v2_hello_ascii:26:certificate_len}" | \
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$OPENSSL x509 -inform DER -outform PEM -out $HOSTCERT 2>$ERRFILE
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if [[ $? -ne 0 ]]; then
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debugme echo "Malformed certificate in ServerHello."
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@ -11457,11 +11455,11 @@ hmac() {
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local -i ret
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if [[ ! "$OSSL_NAME" =~ LibreSSL ]] && [[ $OSSL_VER_MAJOR.$OSSL_VER_MINOR == 3.0.0* ]]; then
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output="$(asciihex_to_binary "$text" | $OPENSSL mac -macopt digest:"${hash_fn/-/}" -macopt hexkey:"$key" HMAC 2>/dev/null)"
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output="$(hex2binary "$text" | $OPENSSL mac -macopt digest:"${hash_fn/-/}" -macopt hexkey:"$key" HMAC 2>/dev/null)"
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ret=$?
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tm_out "$(strip_lf "$output")"
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else
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output="$(asciihex_to_binary "$text" | $OPENSSL dgst "$hash_fn" -mac HMAC -macopt hexkey:"$key" 2>/dev/null)"
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output="$(hex2binary "$text" | $OPENSSL dgst "$hash_fn" -mac HMAC -macopt hexkey:"$key" 2>/dev/null)"
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ret=$?
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tm_out "${output#*= }"
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fi
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@ -11478,13 +11476,13 @@ hmac-transcript() {
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local -i ret
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if [[ ! "$OSSL_NAME" =~ LibreSSL ]] && [[ $OSSL_VER_MAJOR.$OSSL_VER_MINOR == 3.0.0* ]]; then
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output="$(asciihex_to_binary "$transcript" | \
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output="$(hex2binary "$transcript" | \
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$OPENSSL dgst "$hash_fn" -binary 2>/dev/null | \
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$OPENSSL mac -macopt digest:"${hash_fn/-/}" -macopt hexkey:"$key" HMAC 2>/dev/null)"
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ret=$?
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tm_out "$(toupper "$(strip_lf "$output")")"
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else
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output="$(asciihex_to_binary "$transcript" | \
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output="$(hex2binary "$transcript" | \
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$OPENSSL dgst "$hash_fn" -binary 2>/dev/null | \
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$OPENSSL dgst "$hash_fn" -mac HMAC -macopt hexkey:"$key" 2>/dev/null)"
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ret=$?
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@ -11578,7 +11576,7 @@ derive-secret() {
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*) return 7
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esac
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hash_messages="$(asciihex_to_binary "$messages" | $OPENSSL dgst "$hash_fn" 2>/dev/null)"
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hash_messages="$(hex2binary "$messages" | $OPENSSL dgst "$hash_fn" 2>/dev/null)"
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hash_messages="${hash_messages#*= }"
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hkdf-expand-label "$hash_fn" "$secret" "$label" "$hash_messages" "$hash_len"
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return $?
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@ -11623,7 +11621,7 @@ create-initial-transcript() {
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else
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return 1
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fi
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hash_clienthello1="$(asciihex_to_binary "$clienthello1" | $OPENSSL dgst "$hash_fn" 2>/dev/null)"
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hash_clienthello1="$(hex2binary "$clienthello1" | $OPENSSL dgst "$hash_fn" 2>/dev/null)"
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hash_clienthello1="${hash_clienthello1#*= }"
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msg_transcript="FE0000$(printf "%02x" $((${#hash_clienthello1}/2)))$hash_clienthello1$hrr$clienthello2$serverhello"
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else
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@ -12018,7 +12016,7 @@ chacha20() {
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local keystream plaintext=""
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if "$HAS_CHACHA20"; then
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plaintext="$(asciihex_to_binary "$ciphertext" | \
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plaintext="$(hex2binary "$ciphertext" | \
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$OPENSSL enc -chacha20 -K "$key" -iv "01000000$nonce" 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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tm_out "$(strip_spaces "$plaintext")"
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return 0
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@ -12273,17 +12271,17 @@ chacha20_aead_encrypt() {
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# See Section 6.1, Section 6.2, and Appendix A.3 of NIST SP 800-38C and
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# Section 5.3 of RFC 5116.
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generate-ccm-counter-blocks() {
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local ctr="02${1}000000" ctr_msb ctr_lsb1
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local ctr="02${1}000000" ctr_msb blocks=""
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local -i i ctr_lsb n="$2"
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ctr_msb="${ctr:0:24}"
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ctr_lsb=0x${ctr:24:8}
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for (( i=0; i <= n; i+=1 )); do
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ctr_lsb1="$(printf "%08X" "$ctr_lsb")"
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printf "\x${ctr_msb:0:2}\x${ctr_msb:2:2}\x${ctr_msb:4:2}\x${ctr_msb:6:2}\x${ctr_msb:8:2}\x${ctr_msb:10:2}\x${ctr_msb:12:2}\x${ctr_msb:14:2}\x${ctr_msb:16:2}\x${ctr_msb:18:2}\x${ctr_msb:20:2}\x${ctr_msb:22:2}\x${ctr_lsb1:0:2}\x${ctr_lsb1:2:2}\x${ctr_lsb1:4:2}\x${ctr_lsb1:6:2}"
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blocks+="${ctr_msb}$(printf "%08X" "$ctr_lsb")"
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ctr_lsb+=1
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done
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hex2binary "$blocks"
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return 0
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}
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@ -12359,8 +12357,7 @@ ccm-compute-tag() {
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[[ $i -ne 0 ]] &&
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tag="$(printf "%08X%08X%08X%08X" "$((0x${b:0:8} ^ 0x${tag:0:8}))" "$((0x${b:8:8} ^ 0x${tag:8:8}))" "$((0x${b:16:8} ^ 0x${tag:16:8}))" "$((0x${b:24:8} ^ 0x${tag:24:8}))")"
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tag="$(printf "\x${tag:0:2}\x${tag:2:2}\x${tag:4:2}\x${tag:6:2}\x${tag:8:2}\x${tag:10:2}\x${tag:12:2}\x${tag:14:2}\x${tag:16:2}\x${tag:18:2}\x${tag:20:2}\x${tag:22:2}\x${tag:24:2}\x${tag:26:2}\x${tag:28:2}\x${tag:30:2}" | $OPENSSL enc "$cipher" -K "$key" -nopad 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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tag="$(hex2binary "$tag" | $OPENSSL enc "$cipher" -K "$key" -nopad 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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b="${b:32}"
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done
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@ -12562,13 +12559,13 @@ gcm_mult() {
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generate_gcm_ctr() {
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local -i nr_blocks="$1"
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local nonce="$2"
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local i
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local lsb ctr=""
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local -i i
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local ctr=""
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for (( i=1; i <= nr_blocks; i++ )); do
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lsb="$(printf "%08X" "$i")"
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printf "\x${nonce:0:2}\x${nonce:2:2}\x${nonce:4:2}\x${nonce:6:2}\x${nonce:8:2}\x${nonce:10:2}\x${nonce:12:2}\x${nonce:14:2}\x${nonce:16:2}\x${nonce:18:2}\x${nonce:20:2}\x${nonce:22:2}\x${lsb:0:2}\x${lsb:2:2}\x${lsb:4:2}\x${lsb:6:2}"
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ctr+="${nonce}$(printf "%08X" "$i")"
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done
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hex2binary "$ctr"
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return 0
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}
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@ -12727,12 +12724,12 @@ gcm-decrypt() {
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[[ ${#nonce} -ne 24 ]] && return 7
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if [[ "$cipher" == TLS_AES_128_GCM_SHA256 ]] && "$HAS_AES128_GCM" && ! "$compute_tag"; then
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plaintext="$(asciihex_to_binary "$ciphertext" | \
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plaintext="$(hex2binary "$ciphertext" | \
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$OPENSSL enc -aes-128-gcm -K "$key" -iv "$nonce" 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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tm_out "$(strip_spaces "$plaintext")"
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return 0
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elif [[ "$cipher" == TLS_AES_256_GCM_SHA384 ]] && "$HAS_AES256_GCM" && ! "$compute_tag"; then
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plaintext="$(asciihex_to_binary "$ciphertext" | \
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plaintext="$(hex2binary "$ciphertext" | \
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$OPENSSL enc -aes-256-gcm -K "$key" -iv "$nonce" 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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tm_out "$(strip_spaces "$plaintext")"
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return 0
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@ -13414,7 +13411,7 @@ parse_tls_serverhello() {
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tls_certificate_ascii_len=2*0x${tls_handshake_ascii:offset:6}
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offset=$((i+16))
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len1=$((msg_len-16))
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tls_certificate_ascii="$(asciihex_to_binary "${tls_handshake_ascii:offset:len1}" | $OPENSSL zlib -d 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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tls_certificate_ascii="$(hex2binary "${tls_handshake_ascii:offset:len1}" | $OPENSSL zlib -d 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
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tls_certificate_ascii="${tls_certificate_ascii%%[!0-9A-F]*}"
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if [[ ${#tls_certificate_ascii} -ne $tls_certificate_ascii_len ]]; then
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debugme tmln_warning "Length of uncompressed certificates did not match specified length."
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@ -13602,7 +13599,7 @@ parse_tls_serverhello() {
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return 1
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fi
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offset=$((offset+2))
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asciihex_to_binary "${tls_serverhello_ascii:offset:j}" >> "$TMPFILE"
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hex2binary "${tls_serverhello_ascii:offset:j}" >> "$TMPFILE"
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echo "" >> $TMPFILE
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echo "===============================================================================" >> $TMPFILE
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fi
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@ -13698,7 +13695,7 @@ parse_tls_serverhello() {
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key_bitstring="3082${len1}$key_bitstring"
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fi
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if [[ -n "$key_bitstring" ]]; then
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key_bitstring="$(asciihex_to_binary "$key_bitstring" | $OPENSSL pkey -pubin -inform DER 2>$ERRFILE)"
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key_bitstring="$(hex2binary "$key_bitstring" | $OPENSSL pkey -pubin -inform DER 2>$ERRFILE)"
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if [[ -z "$key_bitstring" ]] && [[ $DEBUG -ge 2 ]]; then
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if [[ -n "$named_curve_str" ]]; then
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prln_warning "Your $OPENSSL doesn't support $named_curve_str"
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@ -13745,7 +13742,7 @@ parse_tls_serverhello() {
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return 1
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fi
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offset=$((offset+2))
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asciihex_to_binary "${tls_serverhello_ascii:offset:protocol_len}" >> "$TMPFILE"
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hex2binary "${tls_serverhello_ascii:offset:protocol_len}" >> "$TMPFILE"
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offset=$((offset+protocol_len))
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[[ $j+$protocol_len+2 -lt $extension_len ]] && echo -n ", " >> $TMPFILE
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done
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@ -14002,7 +13999,7 @@ parse_tls_serverhello() {
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tmpfile_handle ${FUNCNAME[0]}.txt
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return 1
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fi
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asciihex_to_binary "${tls_certificate_ascii:12:certificate_len}" | \
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hex2binary "${tls_certificate_ascii:12:certificate_len}" | \
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$OPENSSL x509 -inform DER -outform PEM -out "$HOSTCERT" 2>$ERRFILE
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if [[ $? -ne 0 ]]; then
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debugme echo "Malformed certificate in Certificate Handshake message in ServerHello."
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@ -14036,7 +14033,7 @@ parse_tls_serverhello() {
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tmpfile_handle ${FUNCNAME[0]}.txt
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return 1
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fi
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pem_certificate="$(asciihex_to_binary "${tls_certificate_ascii:i:certificate_len}" | \
|
||||
pem_certificate="$(hex2binary "${tls_certificate_ascii:i:certificate_len}" | \
|
||||
$OPENSSL x509 -inform DER -outform PEM 2>$ERRFILE)"
|
||||
if [[ $? -ne 0 ]]; then
|
||||
debugme echo "Malformed certificate in Certificate Handshake message in ServerHello."
|
||||
@ -14104,10 +14101,10 @@ parse_tls_serverhello() {
|
||||
echo "OCSP response:" >> $TMPFILE
|
||||
echo "===============================================================================" >> $TMPFILE
|
||||
if [[ -n "$hostcert_issuer" ]]; then
|
||||
asciihex_to_binary "$STAPLED_OCSP_RESPONSE" | \
|
||||
hex2binary "$STAPLED_OCSP_RESPONSE" | \
|
||||
$OPENSSL ocsp -no_nonce -CAfile $TEMPDIR/intermediatecerts.pem -issuer $hostcert_issuer -cert $HOSTCERT -respin /dev/stdin -resp_text >> $TMPFILE 2>$ERRFILE
|
||||
else
|
||||
asciihex_to_binary "$STAPLED_OCSP_RESPONSE" | \
|
||||
hex2binary "$STAPLED_OCSP_RESPONSE" | \
|
||||
$OPENSSL ocsp -respin /dev/stdin -resp_text >> $TMPFILE 2>$ERRFILE
|
||||
fi
|
||||
echo "===============================================================================" >> $TMPFILE
|
||||
@ -15477,7 +15474,7 @@ receive_app_data() {
|
||||
[[ -z "$ciphertext" ]] && break
|
||||
done
|
||||
APP_TRAF_KEY_INFO="$tls_version $cipher $server_key $server_iv $server_seq $client_key $client_iv $client_seq"
|
||||
asciihex_to_binary "$plaintext" > "$TMPFILE"
|
||||
hex2binary "$plaintext" > "$TMPFILE"
|
||||
return 0
|
||||
}
|
||||
|
||||
@ -18781,7 +18778,7 @@ run_robot() {
|
||||
esac
|
||||
|
||||
# Encrypt the padded premaster secret using the server's public key.
|
||||
encrypted_pms="$(asciihex_to_binary "$padded_pms" | \
|
||||
encrypted_pms="$(hex2binary "$padded_pms" | \
|
||||
$OPENSSL pkeyutl -encrypt -certin -inkey $HOSTCERT -pkeyopt rsa_padding_mode:none 2>/dev/null | \
|
||||
hexdump -v -e '16/1 "%02x"')"
|
||||
if [[ -z "$encrypted_pms" ]]; then
|
||||
@ -19534,6 +19531,7 @@ HAS_IDN: $HAS_IDN
|
||||
HAS_IDN2: $HAS_IDN2
|
||||
HAS_AVAHIRESOLVE: $HAS_AVAHIRESOLVE
|
||||
HAS_DIG_NOIDNOUT: $HAS_DIG_NOIDNOUT
|
||||
HAS_XXD: $HAS_XXD
|
||||
|
||||
PATH: $PATH
|
||||
PROG_NAME: $PROG_NAME
|
||||
@ -20416,7 +20414,7 @@ print_dn() {
|
||||
fi
|
||||
# Use the LDAP String Representation of Distinguished Names (RFC 2253),
|
||||
# The current specification is in RFC 4514.
|
||||
name="$(asciihex_to_binary "$cert" | $OPENSSL x509 -issuer -noout -inform DER -nameopt RFC2253 2>/dev/null)"
|
||||
name="$(hex2binary "$cert" | $OPENSSL x509 -issuer -noout -inform DER -nameopt RFC2253 2>/dev/null)"
|
||||
name="${name#issuer=}"
|
||||
tm_out "$(strip_leading_space "$name")"
|
||||
return 0
|
||||
@ -22011,6 +22009,11 @@ check_base_requirements() {
|
||||
fatal "${binary} is from busybox. Please install a regular binary" $ERR_RESOURCE
|
||||
fi
|
||||
done
|
||||
# testssl.sh works without xxd, but using xxd is faster. The following checks that the xxd
|
||||
# binary is available and (just to be safe) that "xxd -r -p" works as expected.
|
||||
if type -p xxd &> /dev/null && [[ "$(xxd -r -p <<< "30313233343536373839" 2>/dev/null)" == 0123456789 ]]; then
|
||||
HAS_XXD=true
|
||||
fi
|
||||
}
|
||||
|
||||
parse_cmd_line() {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user