+public_key4="""ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIim+K+tfwI7KcfbtX/FB1DQCWU1RY8eH4b18KywxI3DDuHa4jGvPjeU5WPwfOsUFpWcWMXCmA26TSOmeT2HiiSJNLUKB0keu/PtHAGnn6rFv5YjCF2fa65wZVkEy6eb8buBny+2L5jhFPW0KE4JNTCiueAEbWZInTWmdA1WB8QeTV3USi33NTtYE05I2/x4G2BtFmmzWzCuyRVjkWZQPJY6wIyM1+qGixpbacScxYYDBGA0I9N9VSN9OS2BN3GY8xFJjFSD2+GxsUhDUmUw2bO8ppn2OSl8NUW/U4EQzUTP8VhebI6UqjfIGAv5qHPpe0Yrcrd/QlbWvj2zpqvVtX sfa-user@test.onelab.eu
+"""
+
+private_key4="""
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+"""
+
+
+# the keys for PLC
+def plc_keys (options,index):