Reports the signature schemes this package implements. The list is fixed, not probed: all of them are implemented in the package's own C++ and none depends on a system library, so a scheme available on one machine is available on every machine.
Value
A character vector of 16 scheme names: "xmss-sha256" first,
then the three ML-DSA sets, the six SLH-DSA SHA-2 sets and the six
SLH-DSA SHAKE sets.
Details
"xmss-sha256" is the stateful hash-based scheme of
pqckg(). The rest are the NIST
standards, taken with fipskg(): ML-DSA
(FIPS 204) at all three parameter sets, and SLH-DSA (FIPS 205) at all
twelve – six over SHAKE and six over SHA-2, which are different schemes
and not merely different code paths. Use it to see which names
fipskg(), fipssz() and
fipskey() accept, or to choose a
parameter set.
The names follow the standards: "ML-DSA-44", "ML-DSA-65" and
"ML-DSA-87" (NIST security categories 2, 3 and 5), then
"SLH-DSA-SHA2-" and "SLH-DSA-SHAKE-" followed by 128, 192
or
256 (the security level in bits) and s (small signatures, slow
signing) or f (fast signing, larger signatures). The function takes
no arguments, has no side effects and returns the same 16 names in the
same order on every platform.
Examples
pqcbknd()
#> [1] "xmss-sha256" "ML-DSA-44" "ML-DSA-65"
#> [4] "ML-DSA-87" "SLH-DSA-SHA2-128s" "SLH-DSA-SHA2-128f"
#> [7] "SLH-DSA-SHA2-192s" "SLH-DSA-SHA2-192f" "SLH-DSA-SHA2-256s"
#> [10] "SLH-DSA-SHA2-256f" "SLH-DSA-SHAKE-128s" "SLH-DSA-SHAKE-128f"
#> [13] "SLH-DSA-SHAKE-192s" "SLH-DSA-SHAKE-192f" "SLH-DSA-SHAKE-256s"
#> [16] "SLH-DSA-SHAKE-256f"
# Every scheme is present in every build.
all(c("xmss-sha256", "ML-DSA-65", "SLH-DSA-SHAKE-128s") %in%
pqcbknd())
#> [1] TRUE
# The SLH-DSA sets with fast signing, and their signature sizes in bytes.
fast <- grep("^SLH-DSA-.*f$", pqcbknd(), value = TRUE)
vapply(fast, function(s) fipssz(s)[["signature"]], integer(1))
#> SLH-DSA-SHA2-128f SLH-DSA-SHA2-192f SLH-DSA-SHA2-256f SLH-DSA-SHAKE-128f
#> 17088 35664 49856 17088
#> SLH-DSA-SHAKE-192f SLH-DSA-SHAKE-256f
#> 35664 49856