STSAFE-A110 datasheet(23/36 Pages) STMICROELECTRONICS

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DS13039 Rev 1

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STSAFE-A110

Command set

Establish Key

This command can be used to establish a shared secret between two hosts by using

asymmetric cryptography. The STSAFE-A110 chip computes and provides the shared

secret using a private key already in the STSAFE-A110, the provided host’s public key and a

selected ECC.

Query

Used to check how the chip is configured.

Generate Key

This command is used to generate key pairs (asymmetric cryptography) or local envelope

keys (symmetric cryptography).

Wrap Local Envelope

This command is used to wrap data (typically session keys that are entirely managed by the

local host) with a local key envelope using an AES key wrap algorithm.

Unwrap Local Envelope

This command is used to unwrap a local envelope with a local envelope key.

Encrypt

This command is used to encrypt data with one of the AES keys in the symmetric key table.

Decrypt

This command is used to decrypt data with one of the AES keys in the symmetric key table.

Generate MAC

This command is used to sign data with one of the AES keys in the symmetric key table.

Verify MAC

This command is used to verify data with one of the AES keys in the symmetric key table.

Put Attribute

This command is used to put attributes in the STSAFE-A110 chips like keys, a password,

the host’s public key or I²C parameters.

Verify Password

This command performs password verification and remembers the outcome for future

authorization of Put Attribute commands.

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