I want to use chacha20 cypher to encrypt and decrypt a 64 byte message and send it over BLE anyone tried something like this?

[jitu]

I want to use chacha20 cypher to encrypt and decrypt a 64 byte message and send it over BLE. I tried using wolfSSL, cifra both of which provides the implementations but there documentations are not clear for using them on nrf51822.

[Hung Bui]

@Jitu: I'm not very familiar with chacha20 cypher, but the only encryption modules on the nRF51 are AES codebook and AES CCM. Seems that chacha20 won't use these, then you would need to do calculation manually by the chip. I don't think we have a library or documentation on how to do it.