Allwinner A10/A20 Security System (SS) is an encryption/decryption, hashing and PRNG hardware accelerator.
It supports following features:
- EBC, CBC, CNT modes for AES, DES and 3DES
- SHA1, MD5
- 128 bits, 192 bits and 256 bits key size for AES
- 160 bits PRNG with 192-bits seed
- 32-words RX and TX FIFO
- CPU mode and DMA mode
- Interrupt signaling
This driver currently supports PRNG only.