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JavaCard implementation of Ed25519 signature algorithm for smartcards that do not support EdDSA algorithm introduced in JavaCard API version 3.1.

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dufkan/JCEd25519

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applet
applet
 
 
gradle/wrapper
gradle/wrapper
 
 
libs-sdks @ 282c7f5
libs-sdks @ 282c7f5
 
 
libs
libs
 
 
.gitignore
.gitignore
 
 
.gitmodules
.gitmodules
 
 
LICENSE
LICENSE
 
 
LICENSE-template
LICENSE-template
 
 
README.md
README.md
 
 
build.gradle
build.gradle
 
 
gradlew
gradlew
 
 
gradlew.bat
gradlew.bat
 
 
settings.gradle
settings.gradle
 
 

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JCEd25519

JCEd25519 is a JavaCard implementation of Ed25519 signing using public JavaCard API.

The implementation uses (modified) JCMathLib library to perform necessary operations like EC and BigInt arithmetic. And in case SHA512 is not supported by given JavaCard, its software re-implementation is used.

Structure of this repository is based on JavaCard Gradle Template.

Usage

  • Clone this repository
git clone --recursive https://github.com/dufkan/JCEd25519
  • Build the applet
./gradlew buildJavaCard  --info --rerun-tasks

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JavaCard implementation of Ed25519 signature algorithm for smartcards that do not support EdDSA algorithm introduced in JavaCard API version 3.1.

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cryptography ed25519 javacard

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