Update sss-rs requirement from 0.8.1 to 0.9.0 in /dione-lib

Created by: dependabot[bot]

Updates the requirements on sss-rs to permit the latest version.

Changelog

Sourced from sss-rs's changelog.

sss-rs 0.9.0 07/09/2021

• Move out reconstruction functions out of Secret impl block, for consistency with the sharing functions.
  • reconstruct, reconstruct_from_srcs no longer belong to Secret struct and instead take it as its first argument.
• RustFmt pass, have not used RustFmt up to this point, and fixed a lot of non-idiomatic code.

sss-rs 0.8.1 09/06/2021

• Remove rust-crypto dependency since it is no longer maintained (thank you umgefahren for pointing that out to me)
• Fix improper license setting in Cargo.toml that caused it to be listed as non-standard in crates.io

sss-rs 0.8.0 03/27/2021

• Rework wrapped_sharing to use wrapped_sharing::Error instead of returning Box<dyn Error> so it can be matched against to gain more information. This shouldn't be a breaking change, but the API did change.

sss-rs 0.7.2 10/12/2020

• Add 'verifiable' flag to sharing/reconstruction functions in wrapped_sharing
• This allows the use of wrapped_sharing without being forced to place a verfiable hash at the end of the shares.
• Developer Note: It was a bit of an oversight to assume verifiable sharing be not optional. There are definitely situations where one would not want the reconstruction to be verifiable.

sss-rs 0.7.1 07/16/2020

• Update README.md to reflect recent 0.7.0 changes

sss-rs 0.7.0 07/14/2020

• A LOT of cleanup:
• Documentation formatting cleaned up and made more consistent
• References to old arguments/api removed
• Made geometry and utils module private
• Removed re-exports of both primary modules to avoid confusion between their functions

sharer.rs (Renamed to wrapped_sharing.rs)

• Removed 'Sharer' struct and moved its functionality to standalone functions, similar to raw_share
• Shares generated by sharer functions are now (secret length) + (hash length) + 1 due to the first byte of every share being the corresponding X value for those share points.
• Simplified Sharer Usage:
• Made base share/reconstruct functions use Vec's
• Path-related args now properly ask for AsRef
• Added many convenient unwrap methods for Secret to get the bytes.
• MAJOR bug fix regarding sharer share reconstruction, if they were to be reconstructed out of order, or if more shares were generated than needed and only the required but out-of-order shares were used, would cause incorrect reconstruction.
  • Now, if you generate with N shares, M required for reconstruction, then any X number of shares, M <= X <= N, and in any order, can be used for reconstruction. (This goes for raw_share functions as well)

raw_share.rs: (Renamed to basic_sharing.rs):

• Greatly shortened names
• Sharing functions have also been added to raw_share that include some of this functionality

... (truncated)

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