In cryptography, the Double Ratchet Algorithm (previously referred to as the Axolotl Ratchet) is a key management algorithm that was developed by and Moxie Marlinspike in 2013. It can be used as part of a cryptographic protocol to provide end-to-end encryption for instant messaging. After an initial key exchange it manages the ongoing renewal and maintenance of short-lived session keys. It combines a cryptographic so-called "ratchet" based on the Diffie–Hellman key exchange (DH) and a ratchet based on a key derivation function (KDF), such as a hash function, and is therefore called a double ratchet. The algorithm is considered self-healing because under certain conditions it prevents an attacker from accessing the cleartext of future messages after having compromised one of the user's keys. New session keys are exchanged after a few rounds of communication. This effectively forces the attacker to intercept all communication between the honest parties, since they lose access as soon as a key exchange occurs that is not intercepted. This property was later named Future Secrecy, or Post-Compromise Security. (Wikipedia).
Solving an equation with variable on the same side
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations with Two Variables
Solving and equation with the variable on the same side ex 3, 17=p–3–3p
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations with Two Variables
Solving an equation by combining like terms
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations with Two Variables
DEFCON 18: The Search for Perfect Handcuffs and the Perfect Handcuff Key 1/4
Speaker: Deviant Ollam The few handcuff talks which have appeared at conferences in the past have focused mostly on how these restraints function and how to open them without a key. While this talk is no exception (going into great detail about the specialized anti-pick protections u
From playlist DEFCON 18-2
Modeling a Ratchet Mechanism with Leadscrew
Get a Free Trial: https://goo.gl/C2Y9A5 Get Pricing Info: https://goo.gl/kDvGHt Ready to Buy: https://goo.gl/vsIeA5 Model a ratchet mechanism driving a leadscrew. The screw turns in one direction and the leadscrew cannot be back-driven by the mechanical load. For more videos, visit http:
From playlist Physical Modeling
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations
Solve all solutions with a double angle by dividing by 2
👉 Learn how to use the double angle identities to solve trigonometric equations. When we have equations with a double angle we will apply the identities to create an equation that can help solve by inverse operations or factoring. We explore the double angles for sine, cosine and tangent
From playlist Double Angle Formulas
Levels of selection (3), the evolution of sex.
This video looks at the evolution of sexual reproduction and the reason for its widespread occurrence despite the "two-fold cost" associated with it. Three advantages of sex are identified: production of increased variation in offspring, increased rate of population evolution, and the redu
From playlist TAMU: Bio 312 - Evolution | CosmoLearning Biology
Solving a two step equation with negative variable
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations
Lab evolution with e coli and yeast (Lecture - 02) by Paul Sniegowski
Winter School on Quantitative Systems Biology DATE:04 December 2017 to 22 December 2017 VENUE:Ramanujan Lecture Hall, ICTS, Bengaluru The International Centre for Theoretical Sciences (ICTS) and the Abdus Salam International Centre for Theoretical Physics (ICTP), are organizing a Winter S
From playlist Winter School on Quantitative Systems Biology
Solving an equation by combining like terms 6=5c–9–2c
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations with Two Variables
Forged in Fire: *DOUBLE-EDGED* Assassin's Creed Sword is DOUBLE the TROUBLE (Season 4) | History
Watch all new episodes of Forged in Fire, returning soon, and stay up to date on all of your favorite History Channel shows at http://history.com/schedule. Bladesmith finalists recreate the Cinquedea, a lethal double-edged sword featured in the popular video game Assassin's Creed, in this
From playlist Forged in Fire: Season 4 | History
Stochastic resonance and ratchet effect in sinusoidal... by Mangal Chandra Mahato
Indian Statistical Physics Community Meeting 2016 URL: https://www.icts.res.in/discussion_meeting/details/31/ DATES Friday 12 Feb, 2016 - Sunday 14 Feb, 2016 VENUE Ramanujan Lecture Hall, ICTS Bangalore This is an annual discussion meeting of the Indian statistical physics community wh
From playlist Indian Statistical Physics Community Meeting 2016
Thermodynamique et information - Bourbaphy - 17/11/18
"Kirone Mallick (IPhT Saclay) / 17.11.2018 Thermodynamique et information ---------------------------------- Vous pouvez nous rejoindre sur les réseaux sociaux pour suivre nos actualités. Facebook : https://www.facebook.com/InstitutHenriPoincare/ Twitter : https://twitter.com/InHenriPo
From playlist Bourbaphy - 17/11/18 - L'information
How to solve simple two step equations
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations with a Fraction
Deciphering the workings of molecules, building blocks of life by Joachim Frank
SPEAKER: Joachim Frank (Columbia University, New York, USA) DATE & TIME: 01 November 2017, 16:00 to 17:30 VENUE: Chandrasekhar Auditorium, ICTS, Bangalore We stand at the culmination of a technological development that lasted for decades, and went largely unnoticed until recently. It in
From playlist Public Lectures
From playlist Courses and Series
How to solve a linear equation using only two steps inverse operations
👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse operations (addition or subtraction) to move like terms to
From playlist Solve Two Step Equations
From playlist Courses and Series
Solving an equation with a variable on both sides infinite solutions
👉 Learn how to solve multi-step equations with parenthesis and variable on both sides of the equation. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the solution. To
From playlist Solve Multi-Step Equations......Help!