borr

Ed25519 crypto library based on https://github.com/tink-crypto/tink-java

    
kotlin {
    sourceSets {
        commonMain.dependencies {
            ...
            implementation("io.github.remmerw:borr:0.0.7")
        }
        ...
    }
}
    

    @Test
    fun ed25519() {
        val keys = Ed25519Sign.KeyPair.newKeyPair()

        // sign a msg
        val msg = "moin moin".encodeToByteArray()
        val signer = Ed25519Sign(keys.getPrivateKey())
        val signature = signer.sign(msg)


        // encode
        val privateKeyAsString = Base64.encode(keys.getPrivateKey())
        assertNotNull(privateKeyAsString)
        val publicKeyAsString = Base64.encode(keys.getPublicKey())
        assertNotNull(publicKeyAsString)


        // decode
        val privateKey = Base64.decode(privateKeyAsString)
        assertNotNull(privateKey)
        val publicKey = Base64.decode(publicKeyAsString)

        // verify with public key
        val verifier = Ed25519Verify(publicKey)
        verifier.verify(signature, msg) // throws exception in case is not verified
    }