Adding all algorithms

[baentsch]

Fixes #91.

McEliece & Rainbow need to be further debugged.
README needs updating (as to what (should) work and what doesn't).

[dstebila]

Code looks good, Michael, thanks. I made a mental note of the size increase to the one buffer.

What was the rationale for only enabling a few signature schemes? I don't recall there being constraints like in OpenSSL where we had bitmasks with a limited number of bits.

[xvzcf]

What was the rationale for only enabling a few signature schemes? I don't recall there being constraints like in OpenSSL where we had bitmasks with a limited number of bits.

There is a similar constraint here in ssh-keyscan.c: 

openssh/ssh-keyscan.c

Line 98 in 855936f

KT_ECDSA_NISTP384_SPHINCS_HARAKA_192F_ROBUST;

[dstebila]

What was the rationale for only enabling a few signature schemes? I don't recall there being constraints like in OpenSSL where we had bitmasks with a limited number of bits.

There is a similar constraint here in ssh-keyscan.c: 

openssh/ssh-keyscan.c

Line 98 in 855936f

KT_ECDSA_NISTP384_SPHINCS_HARAKA_192F_ROBUST;

Ah, okay, thanks! Looks like we've got a bit more space there—so far using only 18 of 64 bits—so would it be okay to include some of the level 1 schemes as well, since I think there will be interest in those?

[baentsch]

would it be okay to include some of the level 1 schemes as well

Done with the latest commit. Will merge by COB today if I don't hear howls of protests.

[dstebila]

would it be okay to include some of the level 1 schemes as well

Done with the latest commit. Will merge by COB today if I don't hear howls of protests.

Awesome, thanks Michael!