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verification index

Question asked by Antonio Santagiuliana on Mar 16, 2020
Latest reply on Mar 18, 2020 by Yuri Muhin

Hello, 

what is the purpose of "verification index" in the CSF?

I understood SOURCE index is the index of the key in the table file to be installed ( used ).

I understood TARGET index is the index of the key where to install ( in HAB's keystore ).

Is verification index the index of the key in the HAB's keystore to be used for checking the signature of the key to be installed ?

for example, the IMG_KEY here below has a certificate that was signed by the key at index 0 in the HAB.

[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"

Does verification index mean index of a SRK key ? or any key ?

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