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| author | Michael van der Westhuizen <michael@smart-africa.com> | 2014-07-02 10:17:26 +0200 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-08-09 11:17:01 -0400 |
| commit | e0f2f15534146729fdf2ce58b740121fd67eea1c (patch) | |
| tree | 87cd55f630088b177050457ed0f3a3059997da17 /test/vboot/vboot_test.sh | |
| parent | 53022c3113a6670d21f55262f511ae6a07bb3dc4 (diff) | |
| download | u-boot-imx-e0f2f15534146729fdf2ce58b740121fd67eea1c.zip u-boot-imx-e0f2f15534146729fdf2ce58b740121fd67eea1c.tar.gz u-boot-imx-e0f2f15534146729fdf2ce58b740121fd67eea1c.tar.bz2 | |
Implement generalised RSA public exponents for verified boot
Remove the verified boot limitation that only allows a single
RSA public exponent of 65537 (F4). This change allows use with
existing PKI infrastructure and has been tested with HSM-based
PKI.
Change the configuration OF tree format to store the RSA public
exponent as a 64 bit integer and implement backward compatibility
for verified boot configuration trees without this extra field.
Parameterise vboot_test.sh to test different public exponents.
Mathematics and other hard work by Andrew Bott.
Tested with the following public exponents: 3, 5, 17, 257, 39981,
50457, 65537 and 4294967297.
Signed-off-by: Andrew Bott <Andrew.Bott@ipaccess.com>
Signed-off-by: Andrew Wishart <Andrew.Wishart@ipaccess.com>
Signed-off-by: Neil Piercy <Neil.Piercy@ipaccess.com>
Signed-off-by: Michael van der Westhuizen <michael@smart-africa.com>
Cc: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'test/vboot/vboot_test.sh')
| -rwxr-xr-x | test/vboot/vboot_test.sh | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/test/vboot/vboot_test.sh b/test/vboot/vboot_test.sh index 8074fc6..6d7abb8 100755 --- a/test/vboot/vboot_test.sh +++ b/test/vboot/vboot_test.sh @@ -54,8 +54,16 @@ echo ${mkimage} -D "${dtc}" echo "Build keys" mkdir -p ${keys} +PUBLIC_EXPONENT=${1} + +if [ -z "${PUBLIC_EXPONENT}" ]; then + PUBLIC_EXPONENT=65537 +fi + # Create an RSA key pair -openssl genrsa -F4 -out ${keys}/dev.key 2048 2>/dev/null +openssl genpkey -algorithm RSA -out ${keys}/dev.key \ + -pkeyopt rsa_keygen_bits:2048 \ + -pkeyopt rsa_keygen_pubexp:${PUBLIC_EXPONENT} 2>/dev/null # Create a certificate containing the public key openssl req -batch -new -x509 -key ${keys}/dev.key -out ${keys}/dev.crt |