open-vault/changelog/13991.txt
Alexander Scheel 45c028a2fb
Allow specifying multiple allowed SSH key lengths (#13991)
* Allow specifying multiple allowed SSH key lengths

In the ssh secrets engine, only a single allowed key length was allowed
for each algorithm type. However, many algorithms have multiple safe
values (such as RSA and ECDSA); allowing a single role to have multiple
values for a single algorithm is thus helpful.

On creation or update, roles can now specify multiple types using a list
or comma separated string of allowed values:

    allowed_user_key_lengths: map[string][]int{"rsa": []int{2048, 4096}}

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Add changelog entry

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Break out ssh upgrade logic into separate function

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Update parseutil for optional lists of integers

    go get -u github.com/hashicorp/go-secure-stdlib/parseutil
    go mod tidy

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Simplify parse logic using new parseutil

The newly introduced parseutil.ParseIntSlice handles the more
complicated optional int-like slice logic for us.

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>
2022-02-17 15:36:56 -05:00

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```release-note:improvement
secrets/ssh: Allow specifying multiple approved key lengths for a single algorithm
```