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→Commands
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|v
|v01v\n|Select Check protocol version (00 = original, 01 = 1no reply on v1.0; ACK on v1.1)
|In
|Y|Y
|-
|x
|xxxxxx\n
|Clears Buffers (resets to 'IDLE' state), does not clear any variables.
|In
== Encryption Application ==
The encryption application provides a simple method to encrypt a plaintext into a ciphertext. This application was the original "simple serial". The following operations are performed:
# Load encryption key with 'k' command (for example, k2b7e151628aed2a6abf7158809cf4f3c\n sets key to k2b7e151628aed2a6abf7158809cf4f3c2b7e151628aed2a6abf7158809cf4f3c).
# Set input text to encryption module with 'p' command. Device encrypts input text, and toggles the I/O trigger line during the encryption operation.
# The ciphertext is returned with the 'r' command.
== Authentication Application ==
The authentication application does not expose the result of the encryption. Instead, the result is used only in authentication mode, where the following operations are performed:
# Load encryption key with 'k' command (for example, k2b7e151628aed2a6abf7158809cf4f3c\n sets key to k2b7e151628aed2a6abf7158809cf4f3c2b7e151628aed2a6abf7158809cf4f3c).
# Set the authentication challenge with 't' command.
# Set input text to encryption module with 'p' command. Device encrypts input text, and toggles the I/O trigger line during the encryption operation.
