> For the complete documentation index, see [llms.txt](https://docs.cypherock.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cypherock.com/design-decisions/using-shamir-secret-sharing-vs.-multi-sig/rejected-key-schemes.md).

# Rejected Key Schemes

## 3-of-5 & 4-of-5 Key Scheme

In the previous section addressing the design decisions for the 2/5 scheme, human error was listed as a reasoning for the 2/5 design. Suppose that a 3/5 or above scheme was used, and cryptographic parts were lost, the risk of losing funds would increase significantly as well.

## 1-of-5 Key Scheme

The 1/5 scheme simply does not work because if one of the cryptographic parts were to be compromised, funds would be lost.