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node: Add JSON EdDSA pubkey serialisation/parsing

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This commit is contained in:
Andras Slemmer 2016-06-20 11:48:40 +01:00
parent 795fba1165
commit ea27910d51
1 changed files with 30 additions and 1 deletions
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31
node/src/main/kotlin/com/r3corda/node/utilities/JsonSupport.kt
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@ -10,9 +10,13 @@ import com.fasterxml.jackson.databind.deser.std.StringArrayDeserializer
import com.fasterxml.jackson.databind.module.SimpleModule
import com.fasterxml.jackson.module.kotlin.KotlinModule
import com.r3corda.core.contracts.BusinessCalendar
import com.r3corda.core.crypto.Base58
import com.r3corda.core.crypto.Party
import com.r3corda.core.crypto.SecureHash
import com.r3corda.core.node.services.IdentityService
import net.i2p.crypto.eddsa.EdDSAPublicKey
import net.i2p.crypto.eddsa.spec.EdDSANamedCurveTable
import net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec
import java.math.BigDecimal
import java.time.LocalDate
import java.time.LocalDateTime
@ -22,6 +26,7 @@ import java.time.LocalDateTime
* the java.time API, some core types, and Kotlin data classes.
*/
object JsonSupport {
fun createDefaultMapper(identities: IdentityService): ObjectMapper {
val mapper = ServiceHubObjectMapper(identities)
mapper.enable(SerializationFeature.INDENT_OUTPUT);
@ -45,6 +50,10 @@ object JsonSupport {
cordaModule.addDeserializer(SecureHash.SHA256::class.java, SecureHashDeserializer())
cordaModule.addDeserializer(BusinessCalendar::class.java, CalendarDeserializer)
// For ed25519 pubkeys
cordaModule.addSerializer(EdDSAPublicKey::class.java, PublicKeySerializer)
cordaModule.addDeserializer(EdDSAPublicKey::class.java, PublicKeyDeserializer)
mapper.registerModule(timeModule)
mapper.registerModule(cordaModule)
mapper.registerModule(KotlinModule())
@ -126,4 +135,24 @@ object JsonSupport {
}
}
}
}
private val ed25519Curve = EdDSANamedCurveTable.getByName(EdDSANamedCurveTable.CURVE_ED25519_SHA512)
object PublicKeySerializer : JsonSerializer<EdDSAPublicKey>() {
override fun serialize(obj: EdDSAPublicKey, generator: JsonGenerator, provider: SerializerProvider) {
check(obj.params == ed25519Curve)
generator.writeString(Base58.encode(obj.abyte))
}
}
object PublicKeyDeserializer : JsonDeserializer<EdDSAPublicKey>() {
override fun deserialize(parser: JsonParser, context: DeserializationContext): EdDSAPublicKey {
return try {
val A = Base58.decode(parser.text)
EdDSAPublicKey(EdDSAPublicKeySpec(A, ed25519Curve))
} catch (e: Exception) {
throw JsonParseException("Invalid public key ${parser.text}: ${e.message}", parser.currentLocation)
}
}
}
}