sha512_final
sha512_final(SHA512_CTX(desc), out);
sha512_final(&sha_ctx, ses->preauth_sha_hash);
sha512_final(&sha_ctx, pi_hash);
sha512_final(&ctx.sha512, out);
void sha512_final(struct sha512_ctx *ctx, u8 out[at_least SHA512_DIGEST_SIZE]);
EXPORT_SYMBOL_GPL(sha512_final);
sha512_final(&ctx, out);
#define HASH_FINAL sha512_final