OptionalmodulusOptionalpublicPublic exponent (RSA).
OptionalhashName of the message digest (RSA-PSS).
Optionalmgf1Name of the message digest used by MGF1 (RSA-PSS).
OptionalsaltMinimal salt length in bytes (RSA-PSS).
OptionaldivisorSize of q in bits (DSA).
OptionalnamedName of the curve (EC).
Key size in bits (RSA, DSA).