lowRISC / lowRISC/opentitan

[cryptolib] RSA currently lacks a key gen based on provided seed

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SW:cryptolib
Dominant language
SystemVerilog
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Description

### Description

RSA key generation uses high quality entropy provided to OTBN from EDN. SW lib currenlty does not support generating a key based on a SW-provided seed

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the cryptolib RSA key-generation path and reviewing how OTBN receives high-quality entropy from EDN. Compare that path with the software library boundary and define the caller-provided seed behavior before implementation; done means software can generate RSA keys from a provided seed, with coverage for the seeded path.

Written by the indexing model from the issue text.

Assessment

Domain
cryptography
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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