SYS___MAC_SET_PROC           = 385 // { int __mac_set_proc(struct mac *mac_p); }
	SYS___MAC_GET_FD             = 386 // { int __mac_get_fd(int fd, struct mac *mac_p); }
	SYS___MAC_GET_FILE           = 387 // { int __mac_get_file(const char *path_p, struct mac *mac_p); }
	SYS___MAC_SET_FD             = 388 // { int __mac_set_fd(int fd, struct mac *mac_p); }

	SYS___MAC_SET_PROC           = 385 // { int __mac_set_proc(struct mac *mac_p); }
	SYS___MAC_GET_FD             = 386 // { int __mac_get_fd(int fd, struct mac *mac_p); }
	SYS___MAC_GET_FILE           = 387 // { int __mac_get_file(const char *path_p, struct mac *mac_p); }
	SYS___MAC_SET_FD             = 388 // { int __mac_set_fd(int fd, struct mac *mac_p); }

	SYS___MAC_SET_PROC           = 385 // { int __mac_set_proc(struct mac *mac_p); }
	SYS___MAC_GET_FD             = 386 // { int __mac_get_fd(int fd, struct mac *mac_p); }
	SYS___MAC_GET_FILE           = 387 // { int __mac_get_file(const char *path_p, struct mac *mac_p); }
	SYS___MAC_SET_FD             = 388 // { int __mac_set_fd(int fd, struct mac *mac_p); }

	SYS___MAC_SET_PROC           = 385 // { int __mac_set_proc(struct mac *mac_p); }
	SYS___MAC_GET_FD             = 386 // { int __mac_get_fd(int fd, struct mac *mac_p); }
	SYS___MAC_GET_FILE           = 387 // { int __mac_get_file(const char *path_p, struct mac *mac_p); }
	SYS___MAC_SET_FD             = 388 // { int __mac_set_fd(int fd, struct mac *mac_p); }

	SYS___MAC_SET_PROC           = 385 // { int __mac_set_proc(struct mac *mac_p); }
	SYS___MAC_GET_FD             = 386 // { int __mac_get_fd(int fd, struct mac *mac_p); }
	SYS___MAC_GET_FILE           = 387 // { int __mac_get_file(const char *path_p, struct mac *mac_p); }
	SYS___MAC_SET_FD             = 388 // { int __mac_set_fd(int fd, struct mac *mac_p); }

	SYS___MAC_SET_PROC           = 385 // { int __mac_set_proc(struct mac *mac_p); }
	SYS___MAC_GET_FD             = 386 // { int __mac_get_fd(int fd, struct mac *mac_p); }
	SYS___MAC_GET_FILE           = 387 // { int __mac_get_file(const char *path_p, struct mac *mac_p); }
	SYS___MAC_SET_FD             = 388 // { int __mac_set_fd(int fd, struct mac *mac_p); }

// mechanism, as well as the cipher+MAC pair or the AEAD.
type cipherSuite struct {
	id uint16
	// the lengths, in bytes, of the key material needed for each component.
	keyLen int
	macLen int
	ivLen  int
	ka     func(version uint16) keyAgreement
	// flags is a bitmask of the suite* values, above.
	flags  int
	cipher func(key, iv []byte, isRead bool) any
	mac    func(key []byte) hash.Hash

		return err
	}

	var partIDbin [4]byte
	binary.LittleEndian.PutUint32(partIDbin[:], uint32(partID)) // marshal part ID

	mac := hmac.New(sha256.New, objectEncryptionKey) // derive part encryption key from part ID and object key
	mac.Write(partIDbin[:])
	partEncryptionKey := mac.Sum(nil)

	// Limit the reader, so the decryptor doesn't receive bytes
	// from the next part (different DARE stream)

## Notes

### Running on a Mac

* Currently some _native_ tests fail when being run on a Mac with an error like:

```plain
unable to locate an Envoy binary
```

This is documented in this [PR](https://github.com/istio/istio/issues/13677). Once the Envoy binary is available for the Mac,
these tests will hopefully succeed.

### Ngắn gọn

FastAPI có các giá trị mặc định hợp lý cho mọi thứ, với các cấu hình tùy chọn ở mọi nơi. Tất cả các tham số có thể được tinh chỉnh để thực hiện những gì bạn cần và để định nghĩa API bạn cần.

Nhưng mặc định, tất cả **đều hoạt động**.

### Validation

* Validation cho đa số (hoặc tất cả?) **các kiểu dữ liệu** Python, bao gồm: