Parts of curve25519-dalek split across multiple instructions for usage on-chain before crypto syscall primitives are implemented.

The only currently supported operations are decompression and multi-scalar multiplication. These are also implemented in a way that is fairly specific to the original intended use case of checking ciphertext-ciphertext equality under elgamal encryption.

Roughly speaking, usage steps are

1. Write a 'DSL' list of N instructions in buffer A
2. Write inputs into buffer B
3. Initialize compute buffer C that points to A and B
4. Calling the CrankCompute operation with A, B, C as inputs