diff --git a/common.sh b/common.sh
new file mode 100644
index 0000000..bc9747f
--- /dev/null
+++ b/common.sh
@@ -0,0 +1,88 @@
+#!/bin/bash
+## from OpenSC/src/tests/p11test/runtest.sh
+
+SOPIN="12345678"
+PIN="123456"
+PKCS11_TOOL="../src/tools/pkcs11-tool"
+
+softhsm_paths="/usr/local/lib/softhsm/libsofthsm2.so \
+	/usr/lib64/pkcs11/libsofthsm2.so \
+	/usr/lib/x86_64-linux-gnu/softhsm/libsofthsm2.so"
+
+for LIB in $softhsm_paths; do
+	echo "Testing $LIB"
+	if [[ -f $LIB ]]; then
+		P11LIB=$LIB
+		echo "Setting P11LIB=$LIB"
+		break
+	fi
+done
+if [[ -z "$P11LIB" ]]; then
+	echo "Warning: Could not find the softhsm pkcs11 module"
+fi
+
+ERRORS=0
+function assert() {
+	if [[ $1 != 0 ]]; then
+		echo "====> ERROR: $2"
+		ERRORS=1
+	fi
+}
+
+function generate_key() {
+	TYPE="$1"
+	ID="$2"
+	LABEL="$3"
+
+	# Generate key pair
+	$PKCS11_TOOL --keypairgen --key-type="$TYPE" --login --pin=$PIN \
+		--module="$P11LIB" --label="$LABEL" --id=$ID
+
+	if [[ "$?" -ne "0" ]]; then
+		echo "Couldn't generate $TYPE key pair"
+		return 1
+	fi
+
+	# Extract public key from the card
+	$PKCS11_TOOL --read-object --id $ID --type pubkey --output-file $ID.der \
+		--module="$P11LIB"
+
+	# convert it to more digestible PEM format
+	if [[ ${TYPE:0:3} == "RSA" ]]; then
+		openssl rsa -inform DER -outform PEM -in $ID.der -pubin > $ID.pub
+	else
+		openssl ec -inform DER -outform PEM -in $ID.der -pubin > $ID.pub
+	fi
+	rm $ID.der
+}
+
+function softhsm_initialize() {
+	echo "directories.tokendir = .tokens/" > .softhsm2.conf
+	mkdir ".tokens"
+	export SOFTHSM2_CONF=".softhsm2.conf"
+	# Init token
+	softhsm2-util --init-token --slot 0 --label "SC test" --so-pin="$SOPIN" --pin="$PIN"
+}
+
+function card_setup() {
+	softhsm_initialize
+
+	# Generate 1024b RSA Key pair
+	generate_key "RSA:1024" "01" "RSA_auth"
+	# Generate 2048b RSA Key pair
+	generate_key "RSA:2048" "02" "RSA2048"
+	# Generate 256b ECC Key pair
+	generate_key "EC:secp256r1" "03" "ECC_auth"
+	# Generate 521b ECC Key pair
+	generate_key "EC:secp521r1" "04" "ECC521"
+}
+
+function softhsm_cleanup() {
+	rm .softhsm2.conf
+	rm -rf ".tokens"
+}
+
+function card_cleanup() {
+	softhsm_cleanup
+	rm 0{1,2,3,4}.pub
+}