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Default to 4096 bit for OEM factory reset (fixes #831) #906

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merged 1 commit into from
Dec 2, 2020
Merged

Default to 4096 bit for OEM factory reset (fixes #831) #906

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21 changes: 21 additions & 0 deletions initrd/bin/oem-factory-reset
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@ ADMIN_PIN_DEF=12345678
TPM_PASS_DEF=12345678
CUSTOM_PASS=""

RSA_KEY_LENGTH=4096

GPG_USER_NAME="OEM Key"
GPG_KEY_NAME=`date +%Y%m%d%H%M%S`
GPG_USER_MAIL="oem-${GPG_KEY_NAME}@example.com"
Expand Down Expand Up @@ -76,6 +78,25 @@ gpg_key_reset()
if lsusb | grep -q "20a0:4109" && [ -x /bin/hotp_verification ] ; then
/bin/hotp_verification regenerate ${ADMIN_PIN_DEF}
fi
# Set RSA key length
{
echo admin
echo key-attr
echo 1 # RSA
echo ${RSA_KEY_LENGTH} #Signing key size set to RSA_KEY_LENGTH
echo ${ADMIN_PIN_DEF}
echo 1 # RSA
echo ${RSA_KEY_LENGTH} #Encryption key size set to RSA_KEY_LENGTH
echo ${ADMIN_PIN_DEF}
echo 1 # RSA
echo ${RSA_KEY_LENGTH} #Authentication key size set to RSA_KEY_LENGTH
echo ${ADMIN_PIN_DEF}
} | gpg --command-fd=0 --status-fd=1 --pinentry-mode=loopback --card-edit \
> /tmp/gpg_card_edit_output 2>/dev/null
if [ $? -ne 0 ]; then
ERROR=`cat /tmp/gpg_card_edit_output`
whiptail_error_die "Setting key attributed to RSA ${RSA_KEY_LENGTH} bits in USB security dongle failed."
fi
# Generate OEM GPG keys
{
echo admin
Expand Down