The current implementation was custom and super slow. Since we use Crypto++
anyway, we might as well get use a good implementation.
Change-Id: I761ad7401653471e54000e1c2bc3d9882378112f
Instead of having our own copy of the AES code, use a good library to do that.
Crypto++ is well-maintained, supports a lot of ciphers, works on many OSes, and
is optimized for many architectures.
Change-Id: I7d7d24b47993206d7338c5f9bac8bbdd3915a667
It was a mess, a mix of crypto_* and cbc_mac calls. I made everything call crypto
functions, and also separate key setup from cryptographic operations, this will
be useful to speed up the code in the upcoming commits. Drop support for "usbotp"
key, since the crypto code for that was never mainlined and we can always get the
keys from a device as long as we have code execution (using the DCP debug registers).
Change-Id: I7aa24d12207ffb744225d1b9cc7cb1dc7281dd22
