sl/mnt OK, lukas.

    Version = 4.2
    Hash Algorithm = sha256
    Engine Configuration = 0
    Certificate Format = X509
    Signature Format = CMS
    Engine = CAAM

[Install SRK]
    # Index of the key location in the SRK table to be installed
    File = "../crts/SRK_1_2_3_4_table.bin"
    Source index = 0

[Install CSFK]
    # Key used to authenticate the CSF data
    File = "../crts/CSF1_1_sha256_2048_65537_v3_usr_crt.pem"

[Authenticate CSF]

[Install Key]
    # Key slot index used to authenticate the key to be installed
    Verification index = 0
    # Target key slot in HAB key store where key will be installed
    Target Index = 2
    # Key to install
    File= "../crts/IMG1_1_sha256_2048_65537_v3_usr_crt.pem"

[Authenticate Data]
    # Key slot index used to authenticate the image data
    Verification index = 2
    # Authenticate Start Address, Offset, Length and file
    Blocks = 0x877ff400 0x00000000 0x0009ec00 "u-boot-dtb.imx"