Assurance of public-key validity – assurance that the public key of the other party (i.e., the claimed owner of the public key) has the (unique) correct representation for a non-identity element of the correct cryptographic subgroup, as determined by the domain parameters (see Sections 5.6.2.2.1 and 5.6.2.2.2). This assurance is required for both static and ephemeral public keys.

Misusing public keys as secrets: It might be tempting to use a pattern with a pre-message public key and assume that a successful handshake implies the other party's knowledge of the public key. Unfortunately, this is not the case, since setting public keys to invalid values might cause predictable DH output. For example, a Noise_NK_25519 initiator might send an invalid ephemeral public key to cause a known DH output of all zeros, despite not knowing the responder's static public key. If the parties want to authenticate with a shared secret, it should be used as a PSK.

Channel binding: Depending on the DH functions, it might be possible for a malicious party to engage in multiple sessions that derive the same shared secret key by setting public keys to invalid values that cause predictable DH output (as in the previous bullet). It might also be possible to set public keys to equivalent values that cause the same DH output for different inputs. This is why a higher-level protocol should use the handshake hash (h) for a unique channel binding, instead of ck, as explained in Section 11.2.

The public_key either encodes some value which is a generator in a large prime-order group (which value may have multiple equivalent encodings), or is an invalid value. Implementations must handle invalid public keys either by returning some output which is purely a function of the public key and does not depend on the private key, or by signaling an error to the caller. The DH function may define more specific rules for handling invalid values.

WireGuard excludes zero Diffie-Hellman shared secrets to avoid points of small order, while Noiserecommends not to perform this check

This check strikes a delicate balance: It checks Y sufficiently to prevent forgery of a (Y, Y^x) pair without knowledge of X, but the rejected values for X are unlikely to be hit by an attacker flipping ciphertext bits in the least-significant portion of X. Stricter checking could easily *WEAKEN* security, e.g. the NIST-mandated subgroup check would provide an oracle on whether a tampered X was square or nonsquare.

X25519 is very close to this ideal, with the exception that public keys have easily-computed equivalent values. (Preventing equivalent values would require a different and more costly check. Instead, protocols should "bind" the exact public keys by MAC'ing them or hashing them into the session key.)

Curve25519 key generation uses scalar multiplication with a private key "clamped" so that it will always produce a valid public key, regardless of RNG behavior.

* Valid points have equivalent "invalid" representations, due to the cofactor, masking of the high bit, and (in a few cases) unreduced coordinates.

With all the talk of "validation", the reader of JP's essay is likely to think this check is equivalent to "full validation" (e.g. [SP80056A]), where only valid public keys are accepted (i.e. public keys which uniquely encode a generator of the correct subgroup).

(1) The proposed check has the goal of blacklisting a few input values. It's nowhere near full validation, does not match existing standards for ECDH input validation, and is not even applied to the input.

If Alice generates all-zero prekeys and identity key, and pushes them to the Signal’s servers, then all the peers who initiate a new session with Alice will encrypt their first message with the same key, derived from all-zero shared secrets—essentially, the first message will be in the clear for an eavesdropper.

arguing that a zero check “adds complexity (const-time code, error-handling, and implementation variance), and is not needed in good protocols.”

While we recognise that analytics can provide you with useful information, they are not part of the functionality that the user requests when they use your online service – for example, if you didn’t have analytics running, the user could still be able to access your service. This is why analytics cookies aren’t strictly necessary and so require consent.

PECR always requires consent for non-essential cookies, such as those used for the purposes of marketing and advertising. Legitimate interests cannot be relied upon for these cookies.

This means genuinely asking for permission — using honesty to win trust by enabling rather than disabling user agency.

“meet the minimal requirements that we set based on European law” — which they define as being “if it has no optional boxes pre-ticked, if rejection is as easy as acceptance, and if consent is explicit.”

All of which means — per EU law — it should be equally easy for website visitors to choose not to be tracked as to agree to their personal data being processed.

Consent to tracking must also be obtained prior to a digital service dropping or accessing a cookie; only service-essential cookies can be deployed without asking first.

When consent is being relied upon as the legal basis for processing web users’ personal data

One of the more clever aspects of the agent is how it can verify a user's identity (or more precisely, possession of a private key) without revealing that private key to anybody.

const setRefs = useRef(new Map()).current; const { children } = props; return ( <div> {React.Children.map(children, child => { return React.cloneElement(child, { // v not innerRef ref: node => { console.log('imHere'); return !node ? setRefs.delete(child.key) : setRefs.set(child.key, node)

Each time the ID changes, the EmailInput will be recreated and its state will be reset to the latest defaultEmail value. (Click here to see a demo of this pattern.) With this approach, you don’t have to add key to every input. It might make more sense to put a key on the whole form instead. Every time the key changes, all components within the form will be recreated with a freshly initialized state. In most cases, this is the best way to handle state that needs to be reset.

The thing is that each UI decision depends on countless other UI decisions. A simple example is keybindings. On UNIX/Linux, it’s nearly impossible to pick reasonable default bindings for global desktop navigation because they all conflict with bindings that some app is using. On Windows, the desktop navigation bindings are hardcoded, and no app uses them, because apps know for sure which bindings to avoid.

key challenge is to quantify the functional roles of bacterial taxa in nature to understand how the properties of ecosystems change over time or under different environmental conditions

However, if more control is needed, you can pass any of these pieces of state as a prop (as indicated above) and that state becomes controlled. As soon as this.props[statePropKey] !== undefined, internally, downshift will determine its state based on your prop's value rather than its own internal state.

refKey: if you're rendering a composite component, that component will need to accept a prop which it forwards to the root DOM element. Commonly, folks call this innerRef. So you'd call: getRootProps({refKey: 'innerRef'}) and your composite component would forward like: <div ref={props.innerRef} />

some of the key questions of microbial community assembly, maintenance and function could be answered by intensively studying one (or a few) synthetic model community

I think that if we had this tool in Blackboard we might reach a tipping point among faculty users so that Hypothes.is would bleed back out into folk’s everyday browser use and from there back into the classroom. And from there into the communities we live and share within.

Sakaki's EFI Install Guide/Configuring Secure Boot

Procedure The test aimed to find the relationship of study anxiety and academic performance among engineering students. Immediately participants giving a test, testing also aims to select trainees who have been identified in high anxiety and low academic performance were to participate in this training. The participants came to the lab and fill in the questionnaire include the S-Anxiety scale (STAI Form Y-1) and T-Anxiety scale (STAI Form Y-1). The STAI has 40 items of question and took approximately 20 minutes to complete. The students first read and answered if they had problems the researcher will guide students to answer the questions. This test was based on the faculty, after two weeks who have high levels of anxiety and low academic performance were offered to participate in this study. Result of the test was used to find out correlation between anxiety and academic performance.

But Amazon is barely hiding its goal: It wants to be the operating system for your home.

of key institutions -the family and the education system -in capitalistsociety

Education

Key Institutions and their Roles

818❙Baradtoricity

This will require anunderstanding of the nature of the relationship between discursive prac-tices and material phenomena, an accounting of “nonhuman” as well as“human” forms of agency, and an understanding of the precise causalnature of productive practices that takes account of the fullness of matter’simplication in its ongoing historicity

In this article, I offer an elaboration of performativity—amaterialist, naturalist, and posthumanist elaboration—that allows matter itsdue as an active participant in the world’s becoming, in its ongoing “intra-activity.”4It is vitally important that we understand how matter matters.

“By essentially endorsing Duterte’s murderous war on drugs, Trump is now morally complicit in future killings,” said John Sifton, the Asia advocacy director of Human Rights Watch. “Although the traits of his personality likely make it impossible, Trump should be ashamed of himself.”

discursive

amalgamation

Although thc standard models of rhetorical situation can tell us much about the elements that are involved in a particular situation, these same models can also mask the fluidity of rhetoric.

agglomeration

natureofthosecontextsinwhichspeakersorwriterscreaterhetoricaldiscourse:

rhetoricaladdressgivesexistencetothesituation;onthecon-trary,itisthesituationwhichcallsthediscourseintoexistence.

Parallel universes then, is an inappropriate metaphor; perpendicu~ far universes is perhaps a more accurate visual description.

antanaclasis

vertiginous

Black rhetoric is not utterly divorced from white rhetoric.

specious

sundered

I 1say that I know Jane Austen's intentions with the sentence, at least in its main lines. But can I really call what I know in this sense knowledge? It is clearly subjective, it cannot be proved by any deductive chain of reasoning or by any ordinary laboratory experiment, and it is obviously doubtable both in the sense that many readers will not see it and can doubt it honestly and in the sense that anyone who is determined to doubt what cannot be demonstrated can say he doubts it.

t the goal of all thought and argument is to emulate the purity and objec-tivity and rigor of science, in order to protect oneself from the errors that passion and desire

hermeneutical

hreshold of the existence of signs. Yet even here, things are not so simple, and the meaning of a term like "the existence of signs" requires elu-cidation. What does one mean when one say!, that there are signs, and that it is enough for there to be signs for there to be a statement? What spe-cial status should be given to that verb to be?

scansions

conditions necessary for the appear-ance of an object of discourse, the historical con-ditions required if one is to "say anything" about it, and if several people are to say different things about it, the conditions necessary if it is to exist in relation to other objects, if it is to establish with them relations of resemblance,

The completeness of any reference varies; it is more or less close and clear, it "grasps" its object in greater or Jes~ degree.

So that A may become non-A. But not merely by a leap from one state to the other. Rather, we must take A back into the ground of its existence, the logical substance that is its causal ancestor, and on to a point where it is con-substantial with non-A; then we may return, this time emerging with non-A instead.

and if we consider that the same process must have gone on with the words of our mother tongue from childhood upwards, we shall clearly see that the earliest learnt and of-tenest used words, will, other things equal, call up images with less loss of time and energy than their later learnt synonyms.

I rejoice, because I am persuaded that the rights of woman, like the rights of slaves, need only be examined to he un-derstood and asserted, even hy some of those, who arc now endeavoring lo smother the irre-pressible desire for mental and spiritual freedom which glows in the breast of many, who hardly dare to speak their sentiments.

Until our inlercourse is purified by the \ \ forgelfulness of sex,-until we rise above the present low and sordid views which entwine themselves around our social and domestic inter-change of senliment and feelings, we never can derive lhat benefit from each other's society which it is the design of our Creacor that we should.

Wherefore, my respected friends, let us no longer talk of prejudice, till prejudice becomes extinct at home. Let us no longer talk of opposition, till we cease to oppose our own. For while these evils exist. to talk is like giving breath to the air, and labor to the wind.

f such women as are here described have t-.... once existed, be no longer astonished then, my s brethren and friends, that God at this eventful pe-5~ riod should raise up your own females to strive, ~' by their example both in public and private, to · assist those who arc endeavoring stop the strong current of prejudice that flows so profusely against us at present. No longer ridicule their ef-forts, it will be counted for sin. For God makes use of feeble means sometimes, to bring about his most exalted purposes.

Take us generally as a people, we arc neither lazy nor idle; and considering how Huie we have to excite or stimulate us, I am almost astonished that there arc so many industrious and ambitious ones to be found; although I acknowledge, with extreme sorrow, that there arc some who never were and never will be serviceable lo society. And have you not a similar class among your· selves'!

franchise

SERIOUS GROWTH

Build Muscle Mass, Strength, And Power!

Dumbledore

I first give you the Key that will unlock every mystery that now hides from you the secret of MyBeing.This Key, when you once know how to use it, will open the door to all Wisdom and all Power inheaven and Earth. Yea, it will open the door to the Kingdom of Heaven, and then you have but toenter in to become consciously One with Me.This Key is"To THINK is to CREATE", or"As you THINK in your HEART, so is it with you."Stop and meditate on this that it may get firmly fixed in your mind.A Thinker is a Creator.A Thinker lives in a world of his own conscious creation.When you once know how "to think," you can create at will anything you wish, -- whether it be anew personality, a new environment, or a new world.

the educational affordances of the medium

Therefore, I learned — and learned well — that forgiveness is an essential key to healing. The opposite of forgiveness is judgment, and judgment always creates separation and guilt. Judgment will evoke a sense of guilt in the one who has been judged, unless, of course, they are perfectly awake. But more than this, each time that you judge anything or anyone, you have literally elicited guilt within yourself, because there is a place within you, yet still, that knows the perfect purity of your brother and sister, and sees quite clearly that all things within the human realm are either the extension of Love, or a cry for help and healing.

Interdependence and Regeneration2c5c7 A very important feature to be noted from the discussion in this section bears upon the interdependence among the various types of structuring which are involved in the H-LAM/T system, where the capability for doing each type of structuring is dependent upon the capability for doing one or more of the other types of structuring. (Assuming that the physical structuring of the system remains basically unchanged during the system's operation, we exclude its dependence upon other factors in this discussion.) 2c5c7a This interdependence actually has a cyclic, regenerative nature to it which is very significant to us. We have seen how the capability for mental structuring is finally dependent, down the chain, upon the process structuring (human, artifact, composite) that enables symbol-structure manipulation. But it also is evident that the process structuring is dependent not only upon basic human and artifact process capabilities, but upon the ability of the human to learn how to execute processes--and no less important, upon the ability of the human to select, organize, and modify processes from his repertoire to structure a higher-order process that he can execute. Thus, a capability for structuring and executing processes is partially dependent upon the human's mental structuring, which in turn is partially dependent upon his process structuring (through concept and symbol structuring), which is partially dependent upon his mental structuring, etc. 2c5c7b All of this means that a significant improvement in symbol-structure manipulation through better process structuring (initially perhaps through much better artifacts) should enable us to develop improvements in concept and mental-structure manipulations that can in turn enable us to organize and execute symbol-manipulation processes of increased power. To most people who initially consider the possibilities for computer-like devices augmenting the human intellect, it is only the one-pass improvement that comes to mind, which presents a picture that is relatively barren compared to that which emerges when one considers this regenerative interaction. 2c5c7c We can confidently expect the development of much more powerful concepts pertaining to the manner in which symbol structures can be manipulated and portrayed, and correspondingly more complex manipulation processes that in the first pass would have been beyond the human's power to organize and execute without the better symbol, concept, and mental structuring which his augmented system provided him. These new concepts and processes, beyond our present capabilities to use and thus never developed, will provide a tremendous increased-capability payoff in the future development of our augmentation means.

A key component of data management is the comprehensive description of the data and contextual information that future researchers need to understand and use the data. This description is particularly important because the natural tendency is for the information content of a data set or database to undergo entropy over time (i.e. data entropy ), ultimately becoming meaningless to scientists and others [ 2 ].

Researchers may be underestimating the need for help using archival storage systems and dealing with attendant metadata issues.