After a week, the token will be expired and the user will not be authorized and will have to sign in again to get a new token. And if the user (or a third party) tried to modify the token to change the expiration, you would be able to discover it, because the signatures would not match.

If you want to play with JWT tokens and see how they work, check <a href="https://jwt.io/" class="external-link" target="_blank">https://jwt.io</a>.

## Install `PyJWT`

 *   <li><b>cryptographic:</b> certain hash functions such as {@link Hashing#sha512} are designed to
 *       make it as infeasible as possible to reverse-engineer the input that produced a given hash
 *       code, or even to discover <i>any</i> two distinct inputs that yield the same result. These
 *       are called <i>cryptographic hash functions</i>. But, whenever it is learned that either of

 *   <li><b>cryptographic:</b> certain hash functions such as {@link Hashing#sha512} are designed to
 *       make it as infeasible as possible to reverse-engineer the input that produced a given hash
 *       code, or even to discover <i>any</i> two distinct inputs that yield the same result. These
 *       are called <i>cryptographic hash functions</i>. But, whenever it is learned that either of

	//	$sym±offset(SB)(reg)(index*scale)
	// Exceptions are:
	//
	//	R1
	//	offset
	//	$offset
	// Every piece is optional, so we scan left to right and what
	// we discover tells us where we are.

	// Prefix: $.
	var prefix rune
	switch tok := p.peek(); tok {
	case '$', '*':
		prefix = rune(tok)
		p.next()
	}

	// Symbol: sym±offset(SB)
	tok := p.next()

                        @Override
                        protected void configure() {
                            try {
                                container.lookup(Injector.class).discover(extension.getClassRealm());
                            } catch (Throwable e) {
                                // ignore
                                e.printStackTrace();
                            }

    cache.close()
    createNewCache()

    // The journal has no record that 'a' and 'b' were removed. It will have an entry for both, but
    // when it tries to read the cache files for either entry, it will discover the cache files are
    // missing and remove the entries from the cache.
    assertThat(cache.size()).isEqualTo(4)
    assertThat(cache["a"]).isNull()
    assertThat(cache["b"]).isNull()

In external mode, cmd/link does not process any host object files, in
particular foo.cgo2.o. It links together the gc-generated object
files, along with any other Go code, into a go.o file. While doing
that, cmd/link will discover that there is no definition for
_cgo_gcc_Cfunc_sin, referred to by the gc-compiled source file. This
is okay, because cmd/link also processes the cgo_import_static directive and