Virgil Double Ratchet Java/Kotlin SDK 0.1.4

Virgil Security is presenting an implementation of the [Double Ratchet](https://signal.org/docs/specifications/doubleratchet/) algorithm, which is used by parties to exchange encrypted messages based on a shared secret key. The implementation includes: - **Virgil Perfect Forward Secrecy (PFS) service** – a standalone web-service that is dedicated to managing one-time keys and long-time keys that are based on their Identity Public Keys (public keys that are contained in user cards published on Virgil Cards service); - **Ratchet SDK** – interacts with PFS service for publishing and managing one-time keys and long-time keys and interacts with Virgil Cards service for retrieving user's indentity cards which the OTK and LTK are based on. The parties derive new keys for every Double Ratchet message so that previous private keys cannot be calculated from new ones. The parties that participate in the communication also send Diffie-Hellman public values attached to their messages. The results of Diffie-Hellman calculations are mixed into the derived keys so that the new private keys cannot be calculated from the previous ones.

License	Virgil Security, Inc. license
Categories	Security
GroupId	com.virgilsecurity
ArtifactId	ratchet
Version	0.1.4
Type	jar
Description	Virgil Double Ratchet Java/Kotlin SDK Virgil Security is presenting an implementation of the [Double Ratchet](https://signal.org/docs/specifications/doubleratchet/) algorithm, which is used by parties to exchange encrypted messages based on a shared secret key. The implementation includes: - **Virgil Perfect Forward Secrecy (PFS) service** – a standalone web-service that is dedicated to managing one-time keys and long-time keys that are based on their Identity Public Keys (public keys that are contained in user cards published on Virgil Cards service); - **Ratchet SDK** – interacts with PFS service for publishing and managing one-time keys and long-time keys and interacts with Virgil Cards service for retrieving user's indentity cards which the OTK and LTK are based on. The parties derive new keys for every Double Ratchet message so that previous private keys cannot be calculated from new ones. The parties that participate in the communication also send Diffie-Hellman public values attached to their messages. The results of Diffie-Hellman calculations are mixed into the derived keys so that the new private keys cannot be calculated from the previous ones.
Project URL	https://www.virgilsecurity.com/
Source Code Management	https://github.com/VirgilSecurity/virgil-ratchet-kotlin

Download ratchet 0.1.4

Filename	Size
ratchet-0.1.4.pom
ratchet-0.1.4.jar	104 KB
ratchet-0.1.4-sources.jar	45 KB
ratchet-0.1.4-javadoc.jar	200 KB

Apache Maven

<!-- https://jarcasting.com/artifacts/com.virgilsecurity/ratchet/ -->
<dependency>
    <groupId>com.virgilsecurity</groupId>
    <artifactId>ratchet</artifactId>
    <version>0.1.4</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/com.virgilsecurity/ratchet/
implementation 'com.virgilsecurity:ratchet:0.1.4'

Gradle Kotlin

// https://jarcasting.com/artifacts/com.virgilsecurity/ratchet/
implementation ("com.virgilsecurity:ratchet:0.1.4")

Apache Buildr

'com.virgilsecurity:ratchet:jar:0.1.4'

Apache Ivy

<dependency org="com.virgilsecurity" name="ratchet" rev="0.1.4">
  <artifact name="ratchet" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='com.virgilsecurity', module='ratchet', version='0.1.4')
)

Scala SBT

libraryDependencies += "com.virgilsecurity" % "ratchet" % "0.1.4"

Leiningen

[com.virgilsecurity/ratchet "0.1.4"]

Dependencies

compile (3)

Group / Artifact	Type	Version
com.virgilsecurity.sdk : crypto	jar	7.3.1
com.virgilsecurity.sdk : sdk	jar	7.3.1
com.virgilsecurity.crypto : ratchet	jar	0.15.2

runtime (4)

Group / Artifact	Type	Version
com.google.code.gson : gson	jar	2.8.5
com.github.kittinunf.fuel : fuel	jar	1.15.1
org.jetbrains.kotlin : kotlin-stdlib-jdk8	jar	1.3.61
org.jetbrains.kotlinx : kotlinx-coroutines-core	jar	1.3.2

Project Modules

There are no modules declared in this project.