auto import from //depot/cupcake/@135843
diff --git a/fastboot/genkey.sh b/fastboot/genkey.sh
new file mode 100755
index 0000000..011e902
--- /dev/null
+++ b/fastboot/genkey.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+if [ $# -ne 2 ]
+then
+ echo "Usage: $0 alias \"pass phrase\""
+ exit -1
+fi
+
+# Generate a 2048 bit RSA key with public exponent 3.
+# Encrypt private key with provided password.
+openssl genrsa -3 -out $1.pem -passout pass:"$2" 2048
+
+# Create a self-signed cert for this key.
+openssl req -new -x509 -key $1.pem -passin pass:"$2" \
+ -out $1-cert.pem \
+ -batch -days 10000
+
+# Create a PKCS12 store containing the generated private key.
+# Protect the keystore and the private key with the provided password.
+openssl pkcs12 -export -in $1-cert.pem -inkey $1.pem -passin pass:"$2" \
+ -out $1.p12 -name $1 -passout pass:"$2"
+
+rm $1.pem
+rm $1-cert.pem
+