Function hacl_sys::Hacl_Ed25519_expand_keys

pub unsafe extern "C" fn Hacl_Ed25519_expand_keys(
    expanded_keys: *mut u8,
    private_key: *mut u8
)

Compute the expanded keys for an Ed25519 signature.

The outparam expanded_keys points to 96 bytes of valid memory, i.e., uint8_t[96]. The argument private_key points to 32 bytes of valid memory, i.e., uint8_t[32].

If one needs to sign several messages under the same private key, it is more efficient to call expand_keys only once and sign_expanded multiple times, for each message.