tpm2: Extend asym key test case data generation script with sm4

Extend the test case data generation script with sm4. Since several
distros' openssl do not support sm4, we need to test for whether sm4
is supported by the installed openssl.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

src/tpm2/gensymtestsdata.sh

@@ -114,6 +114,45 @@ function do_tdes() {
     done
 }
 
+function do_sm4() {
+    local data="$1"
+    local osslflag="$2"
+
+    for keysize in 128; do
+        tmp=SM4_KEY_${keysize}
+        key=$(eval echo \$$tmp)
+        for mode in ecb cbc cfb ofb ctr; do
+            cipher="sm4-${mode}"
+            bs=$((128 / 8))
+            iv=""
+            ivparm=""
+            case $mode in
+            ecb)
+                ;;
+            ctr)
+                v=255
+                for ((c=0; c < bs; c++)); do
+                   iv="$(printf "%02x" $v)${iv}"
+                   v=$((v - 1))
+                done
+                ivparm="-iv ${iv}"
+                ;;
+            *)
+                for ((c=0; c < bs; c++)); do
+                   iv="${iv}$(printf "%02x" $c)"
+                done
+                ivparm="-iv ${iv}"
+                ;;
+            esac
+            echo -n "$cipher: "
+            openssl enc -e -K "${key}" ${ivparm} -${cipher} -in <(echo -en "$data") ${osslflag} | \
+                od -t x1 -w128 -An | \
+                sed -n 's/ \([a-f0-9]\{2\}\)/ 0x\1/pg'
+        done
+    done
+}
+
+
 AES_KEY_128='2b7e151628aed2a6abf7158809cf4f3c'
 AES_KEY_192='8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b'
 AES_KEY_256='603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4'
@@ -145,3 +184,12 @@ CAMELLIA_DATA_IN=${AES_DATA_IN}
 echo "----- CAMELLIA -----"
 do_camellia "${CAMELLIA_DATA_IN}" ""
 echo "--------------------"
+
+if [ -n "$(openssl enc -ciphers | grep sm4)" ]; then
+    SM4_KEY_128='0123456789abcdeffedcba9876543210'
+    SM4_DATA_IN='\xaa\xaa\xaa\xaa\xbb\xbb\xbb\xbb\xcc\xcc\xcc\xcc\xdd\xdd\xdd\xdd\xee\xee\xee\xee\xff\xff\xff\xff\xaa\xaa\xaa\xaa\xbb\xbb\xbb\xbb'
+
+    echo "-------- SM4 -------"
+    do_sm4 "${SM4_DATA_IN}" ""
+    echo "--------------------"
+fi