Struct cookie::PrivateJar

source ·
pub struct PrivateJar<J> { /* private fields */ }
Available on crate feature private only.
Expand description

A child cookie jar that provides authenticated encryption for its cookies.

A private child jar signs and encrypts all the cookies added to it and verifies and decrypts cookies retrieved from it. Any cookies stored in a PrivateJar are simultaneously assured confidentiality, integrity, and authenticity. In other words, clients cannot discover nor tamper with the contents of a cookie, nor can they fabricate cookie data.

Implementations§

Authenticates and decrypts cookie, returning the plaintext version if decryption succeeds or None otherwise. Authenticatation and decryption always succeeds if cookie was generated by a PrivateJar with the same key as self.

Example
use cookie::{CookieJar, Cookie, Key};

let key = Key::generate();
let mut jar = CookieJar::new();
assert!(jar.private(&key).get("name").is_none());

jar.private_mut(&key).add(Cookie::new("name", "value"));
assert_eq!(jar.private(&key).get("name").unwrap().value(), "value");

let plain = jar.get("name").cloned().unwrap();
assert_ne!(plain.value(), "value");
let decrypted = jar.private(&key).decrypt(plain).unwrap();
assert_eq!(decrypted.value(), "value");

let plain = Cookie::new("plaintext", "hello");
assert!(jar.private(&key).decrypt(plain).is_none());

Returns a reference to the Cookie inside this jar with the name name and authenticates and decrypts the cookie’s value, returning a Cookie with the decrypted value. If the cookie cannot be found, or the cookie fails to authenticate or decrypt, None is returned.

Example
use cookie::{CookieJar, Cookie, Key};

let key = Key::generate();
let jar = CookieJar::new();
assert!(jar.private(&key).get("name").is_none());

let mut jar = jar;
let mut private_jar = jar.private_mut(&key);
private_jar.add(Cookie::new("name", "value"));
assert_eq!(private_jar.get("name").unwrap().value(), "value");

Adds cookie to the parent jar. The cookie’s value is encrypted with authenticated encryption assuring confidentiality, integrity, and authenticity.

Example
use cookie::{CookieJar, Cookie, Key};

let key = Key::generate();
let mut jar = CookieJar::new();
jar.private_mut(&key).add(Cookie::new("name", "value"));

assert_ne!(jar.get("name").unwrap().value(), "value");
assert_eq!(jar.private(&key).get("name").unwrap().value(), "value");

Adds an “original” cookie to parent jar. The cookie’s value is encrypted with authenticated encryption assuring confidentiality, integrity, and authenticity. Adding an original cookie does not affect the CookieJar::delta() computation. This method is intended to be used to seed the cookie jar with cookies received from a client’s HTTP message.

For accurate delta computations, this method should not be called after calling remove.

Example
use cookie::{CookieJar, Cookie, Key};

let key = Key::generate();
let mut jar = CookieJar::new();
jar.private_mut(&key).add_original(Cookie::new("name", "value"));

assert_eq!(jar.iter().count(), 1);
assert_eq!(jar.delta().count(), 0);

Removes cookie from the parent jar.

For correct removal, the passed in cookie must contain the same path and domain as the cookie that was initially set.

This is identical to CookieJar::remove(). See the method’s documentation for more details.

Example
use cookie::{CookieJar, Cookie, Key};

let key = Key::generate();
let mut jar = CookieJar::new();
let mut private_jar = jar.private_mut(&key);

private_jar.add(Cookie::new("name", "value"));
assert!(private_jar.get("name").is_some());

private_jar.remove(Cookie::named("name"));
assert!(private_jar.get("name").is_none());

Auto Trait Implementations§

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Returns the argument unchanged.

Calls U::from(self).

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The type returned in the event of a conversion error.
Performs the conversion.
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Performs the conversion.