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core: switch to ed25519

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This commit is contained in:
Andras Slemmer 2016-06-09 14:56:26 +01:00
parent 9930e8d5c7
commit 1fe283c113
1 changed files with 5 additions and 4 deletions
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9
core/src/main/kotlin/com/r3corda/core/crypto/CryptoUtilities.kt
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@ -1,13 +1,14 @@
package com.r3corda.core.crypto
import com.google.common.io.BaseEncoding
import com.r3corda.core.crypto.Party
import com.r3corda.core.serialization.OpaqueBytes
import com.r3corda.core.serialization.SerializedBytes
import com.r3corda.core.serialization.deserialize
import net.i2p.crypto.eddsa.EdDSAEngine
import java.math.BigInteger
import java.security.*
import java.security.interfaces.ECPublicKey
import net.i2p.crypto.eddsa.KeyPairGenerator as EddsaKeyPairGenerator
// "sealed" here means there can't be any subclasses other than the ones defined here.
sealed class SecureHash private constructor(bits: ByteArray) : OpaqueBytes(bits) {
@ -118,7 +119,7 @@ class DummyPublicKey(val s: String) : PublicKey, Comparable<PublicKey> {
/** Utility to simplify the act of signing a byte array */
fun PrivateKey.signWithECDSA(bits: ByteArray): DigitalSignature {
val signer = Signature.getInstance("SHA256withECDSA")
val signer = EdDSAEngine()
signer.initSign(this)
signer.update(bits)
val sig = signer.sign()
@ -140,7 +141,7 @@ fun KeyPair.signWithECDSA(bitsToSign: ByteArray, party: Party): DigitalSignature
/** Utility to simplify the act of verifying a signature */
fun PublicKey.verifyWithECDSA(content: ByteArray, signature: DigitalSignature) {
val verifier = Signature.getInstance("SHA256withECDSA")
val verifier = EdDSAEngine()
verifier.initVerify(this)
verifier.update(content)
if (verifier.verify(signature.bits) == false)
@ -160,4 +161,4 @@ operator fun KeyPair.component1() = this.private
operator fun KeyPair.component2() = this.public
/** A simple wrapper that will make it easier to swap out the EC algorithm we use in future */
fun generateKeyPair() = KeyPairGenerator.getInstance("EC").genKeyPair()
fun generateKeyPair() = EddsaKeyPairGenerator().generateKeyPair()