Ed25519ctx is not fips approved

[simo5]

Description

And OpenSSL completely removed it from the FIPs module. So fail early.

Fixes #380

Checklist

• Test suite updated with functionality tests
• Test suite updated with negative tests
• Rustdoc string were added or updated
• CHANGELOG and/or other documentation added or updated
• This is not a code change

Reviewer's checklist:

• Any issues marked for closing are fully addressed
• There is a test suite reasonably covering new functionality or modifications
• This feature/change has adequate documentation added
• A changelog entry is added if the change is significant
• Code conform to coding style that today cannot yet be enforced via the check style test
• Commits have short titles and sensible text
• Doc string are properly updated

[Jakuje]

Could we have at least a simple test or should we put it under the #288?

[simo5]

Could we have at least a simple test or should we put it under the #288?

Well we have a test failure that indicates to me we already test for this, and actually need to catch it :)

[Jakuje]

Could we have at least a simple test or should we put it under the #288?

Well we have a test failure that indicates to me we already test for this, and actually need to catch it :)

oh. Good point. I see now. Its the issue that I do not run the kryoptic tests in the rust-cryptoki testsuite that I did not catch it in there.

[simo5]

Could we have at least a simple test or should we put it under the #288?

Well we have a test failure that indicates to me we already test for this, and actually need to catch it :)

oh. Good point. I see now. Its the issue that I do not run the kryoptic tests in the rust-cryptoki testsuite that I did not catch it in there.

The odd thing is that it doesn't fail locally for me, I am ... intrigued.

[simo5]

Could we have at least a simple test or should we put it under the #288?

Well we have a test failure that indicates to me we already test for this, and actually need to catch it :)

oh. Good point. I see now. Its the issue that I do not run the kryoptic tests in the rust-cryptoki testsuite that I did not catch it in there.

The odd thing is that it doesn't fail locally for me, I am ... intrigued.

Nevermind, as usual when CI complains and local test don't it is 99% a PEBCAK problem ... and it was :-D

[simo5]

@Jakuje tests have been changed to expect a failure in FIPS builds.