sha512_core_final
ATTRIBUTE_WARN_UNUSED_RET int sha512_core_final(sha512_core_context *ctx, u8 *output, u32 output_size);
ret = sha512_core_final(ctx, output, SHA512_224_DIGEST_SIZE); EG(ret, err);
ret = sha512_core_final(ctx, output, SHA512_256_DIGEST_SIZE); EG(ret, err);
ret = sha512_core_final(ctx, output, SHA512_DIGEST_SIZE); EG(ret, err);