[PATCH ima-evm-utils v2 2/2] examples: Add examples for elliptic curve key and certs generation

[Stefan Berger <stefanb@linux.ibm.com>]

Add example scripts for ECC key and certificate creation and reference
them from the README.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
---
 README                           |  3 +++
 examples/ima-gen-local-ca-ecc.sh | 29 ++++++++++++++++++++++++++++
 examples/ima-genkey-ecc.sh       | 33 ++++++++++++++++++++++++++++++++
 examples/ima-genkey-self-ecc.sh  | 29 ++++++++++++++++++++++++++++
 4 files changed, 94 insertions(+)
 create mode 100755 examples/ima-gen-local-ca-ecc.sh
 create mode 100755 examples/ima-genkey-ecc.sh
 create mode 100755 examples/ima-genkey-self-ecc.sh

diff --git a/README b/README
index fd12680..ef7f475 100644
--- a/README
+++ b/README
@@ -469,6 +469,9 @@ Examples of scripts to generate X509 public key certificates:
  /usr/share/doc/ima-evm-utils/ima-genkey-self.sh
  /usr/share/doc/ima-evm-utils/ima-genkey.sh
  /usr/share/doc/ima-evm-utils/ima-gen-local-ca.sh
+ /usr/share/doc/ima-evm-utils/ima-genkey-self-ecc.sh
+ /usr/share/doc/ima-evm-utils/ima-genkey-ecc.sh
+ /usr/share/doc/ima-evm-utils/ima-gen-local-ca-ecc.sh
 
 
 AUTHOR
diff --git a/examples/ima-gen-local-ca-ecc.sh b/examples/ima-gen-local-ca-ecc.sh
new file mode 100755
index 0000000..ee2aeb6
--- /dev/null
+++ b/examples/ima-gen-local-ca-ecc.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+GENKEY=ima-local-ca.genkey
+
+cat << __EOF__ >$GENKEY
+[ req ]
+distinguished_name = req_distinguished_name
+prompt = no
+string_mask = utf8only
+x509_extensions = v3_ca
+
+[ req_distinguished_name ]
+O = IMA-CA
+CN = IMA/EVM certificate signing key
+emailAddress = ca@ima-ca
+
+[ v3_ca ]
+basicConstraints=CA:TRUE
+subjectKeyIdentifier=hash
+authorityKeyIdentifier=keyid:always,issuer
+# keyUsage = cRLSign, keyCertSign
+__EOF__
+
+openssl req -new -x509 -utf8 -sha1 -days 3650 -batch -config $GENKEY \
+		-outform DER -out ima-local-ca.x509 -keyout ima-local-ca.priv \
+		-newkey ec -pkeyopt ec_paramgen_curve:prime256v1
+
+openssl x509 -inform DER -in ima-local-ca.x509 -out ima-local-ca.pem
+
diff --git a/examples/ima-genkey-ecc.sh b/examples/ima-genkey-ecc.sh
new file mode 100755
index 0000000..735c665
--- /dev/null
+++ b/examples/ima-genkey-ecc.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+GENKEY=ima.genkey
+
+cat << __EOF__ >$GENKEY
+[ req ]
+distinguished_name = req_distinguished_name
+prompt = no
+string_mask = utf8only
+x509_extensions = v3_usr
+
+[ req_distinguished_name ]
+O = `hostname`
+CN = `whoami` signing key
+emailAddress = `whoami`@`hostname`
+
+[ v3_usr ]
+basicConstraints=critical,CA:FALSE
+#basicConstraints=CA:FALSE
+keyUsage=digitalSignature
+#keyUsage = nonRepudiation, digitalSignature, keyEncipherment
+subjectKeyIdentifier=hash
+authorityKeyIdentifier=keyid
+#authorityKeyIdentifier=keyid,issuer
+__EOF__
+
+openssl req -new -nodes -utf8 -sha1 -days 365 -batch -config $GENKEY \
+		-out csr_ima.pem -keyout privkey_ima.pem \
+		-newkey ec -pkeyopt ec_paramgen_curve:prime256v1
+openssl x509 -req -in csr_ima.pem -days 365 -extfile $GENKEY -extensions v3_usr \
+		-CA ima-local-ca.pem -CAkey ima-local-ca.priv -CAcreateserial \
+		-outform DER -out x509_ima.der
+
diff --git a/examples/ima-genkey-self-ecc.sh b/examples/ima-genkey-self-ecc.sh
new file mode 100755
index 0000000..3d8f11f
--- /dev/null
+++ b/examples/ima-genkey-self-ecc.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+GENKEY=x509_evm.genkey
+
+cat << __EOF__ >$GENKEY
+[ req ]
+distinguished_name = req_distinguished_name
+prompt = no
+string_mask = utf8only
+x509_extensions = myexts
+
+[ req_distinguished_name ]
+O = `hostname`
+CN = `whoami` signing key
+emailAddress = `whoami`@`hostname`
+
+[ myexts ]
+basicConstraints=critical,CA:FALSE
+keyUsage=digitalSignature
+subjectKeyIdentifier=hash
+authorityKeyIdentifier=keyid
+__EOF__
+
+openssl req -x509 -new -nodes -utf8 -sha1 -days 3650 -batch -config $GENKEY \
+		-outform DER -out x509_evm.der -keyout privkey_evm.pem \
+		-newkey ec -pkeyopt ec_paramgen_curve:prime256v1
+
+openssl ec -pubout -in privkey_evm.pem -out pubkey_evm.pem
+
-- 
2.39.2