satunna

satunna is a reproducible pseudo-random code execution hashing algo.
It uses a virtual machine that executes pseudo-random instructions that produce a 256-bit Blake2b cryptographic hash.

Specifications

SPECS ARE WIP AND ARE SUBJECT TO CHANGE

The Virtual Machine

Seed

The seed is used to determine which instructions in what order are used on the inputed data.
The seed is a positive intenger derived from the first 16 bytes of the blake2b hash of the file(or string).

The Instruction Set

The satunnaVM is a CISC, turing complete virtual machine that is designed to compute 64-bit integers and nothing more.

The current VM instruction set is being worked on as satunna is being developed.

instruction	dst	src	src == dst ?	operation
IADD_M	R	R	src = 0	dst = dst + [mem]
ISUB_R	R	R	src = imm32	dst = dst - src
ISUB_M	R	R	src = 0	dst = dst - [mem]
IMUL_R	R	R	src = imm32	dst = dst * src
IMUL_M	R	R	src = 0	dst = dst * [mem]
IMULH_R	R	R	src = dst	dst = (dst * src) >> 64
IMULH_M	R	R	src = 0	dst = (dst * [mem]) >> 64
IMUL_RCP	R	-	-	dst = 2x / imm32 * dst
INEG_R	R	-	-	dst = -dst
IXOR_R	R	R	src = imm32	dst = dst ^ src
IXOR_M	R	R	src = 0	dst = dst ^ [mem]
IROR_R	R	R	src = imm32	dst = dst >>> src
IROL_R	R	R	src = imm32	dst = dst <<< src
ISWAP_R	R	R	src = dst	temp = src; src = dst; dst = temp