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Add newSecureRandom() that uses a non-blocking SecureRandom provider on Linux

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This commit is contained in:
Andras Slemmer 2016-06-16 17:06:01 +01:00
parent 0c325c31a2
commit a7419b116d
8 changed files with 27 additions and 12 deletions
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3
contracts/src/main/kotlin/com/r3corda/contracts/cash/Cash.kt
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@ -3,6 +3,7 @@ package com.r3corda.contracts.cash
import com.r3corda.core.contracts.*
import com.r3corda.core.crypto.Party
import com.r3corda.core.crypto.SecureHash
import com.r3corda.core.crypto.newSecureRandom
import com.r3corda.core.crypto.toStringShort
import com.r3corda.core.utilities.Emoji
import java.security.PublicKey
@ -74,7 +75,7 @@ class Cash : FungibleAsset<Currency>() {
* Allows new cash states to be issued into existence: the nonce ("number used once") ensures the transaction
* has a unique ID even when there are no inputs.
*/
data class Issue(override val nonce: Long = SecureRandom.getInstanceStrong().nextLong()) : FungibleAsset.Commands.Issue
data class Issue(override val nonce: Long = newSecureRandom().nextLong()) : FungibleAsset.Commands.Issue
/**
* A command stating that money has been withdrawn from the shared ledger and is now accounted for

3
core/src/main/kotlin/com/r3corda/core/Utils.kt
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@ -4,6 +4,7 @@ import com.google.common.io.ByteStreams
import com.google.common.util.concurrent.ListenableFuture
import com.google.common.util.concurrent.MoreExecutors
import com.google.common.util.concurrent.SettableFuture
import com.r3corda.core.crypto.newSecureRandom
import org.slf4j.Logger
import java.io.BufferedInputStream
import java.io.InputStream
@ -36,7 +37,7 @@ fun String.abbreviate(maxWidth: Int): String = if (length <= maxWidth) this else
* Returns a random positive long generated using a secure RNG. This function sacrifies a bit of entropy in order to
* avoid potential bugs where the value is used in a context where negative numbers are not expected.
*/
fun random63BitValue(): Long = Math.abs(SecureRandom.getInstanceStrong().nextLong())
fun random63BitValue(): Long = Math.abs(newSecureRandom().nextLong())
// Some utilities for working with Guava listenable futures.
fun <T> ListenableFuture<T>.then(executor: Executor, body: () -> Unit) = addListener(Runnable(body), executor)

10
core/src/main/kotlin/com/r3corda/core/crypto/CryptoUtilities.kt
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@ -10,6 +10,14 @@ import java.security.*
import java.security.interfaces.ECPublicKey
import net.i2p.crypto.eddsa.KeyPairGenerator as EddsaKeyPairGenerator
fun newSecureRandom(): SecureRandom {
if (System.getProperty("os.name") == "Linux") {
return SecureRandom.getInstance("NativePRNGNonBlocking")
} else {
return SecureRandom.getInstanceStrong()
}
}
// "sealed" here means there can't be any subclasses other than the ones defined here.
sealed class SecureHash private constructor(bits: ByteArray) : OpaqueBytes(bits) {
class SHA256(bits: ByteArray) : SecureHash(bits) {
@ -38,7 +46,7 @@ sealed class SecureHash private constructor(bits: ByteArray) : OpaqueBytes(bits)
@JvmStatic fun sha256Twice(bits: ByteArray) = sha256(sha256(bits).bits)
@JvmStatic fun sha256(str: String) = sha256(str.toByteArray())
@JvmStatic fun randomSHA256() = sha256(SecureRandom.getInstanceStrong().generateSeed(32))
@JvmStatic fun randomSHA256() = sha256(newSecureRandom().generateSeed(32))
}
abstract val signatureAlgorithmName: String

3
core/src/test/kotlin/com/r3corda/core/contracts/TransactionGraphSearchTests.kt
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@ -1,5 +1,6 @@
package com.r3corda.core.contracts
import com.r3corda.core.crypto.newSecureRandom
import com.r3corda.core.node.services.testing.MockTransactionStorage
import com.r3corda.core.testing.DUMMY_NOTARY
import com.r3corda.core.testing.MEGA_CORP_KEY
@ -16,7 +17,7 @@ class TransactionGraphSearchTests {
}
}
fun random31BitValue(): Int = Math.abs(SecureRandom.getInstanceStrong().nextInt())
fun random31BitValue(): Int = Math.abs(newSecureRandom().nextInt())
/**
* Build a pair of transactions. The first issues a dummy output state, and has a command applied, the second then

3
core/src/test/kotlin/com/r3corda/core/contracts/TransactionGroupTests.kt
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@ -2,6 +2,7 @@ package com.r3corda.core.contracts
import com.r3corda.core.crypto.Party
import com.r3corda.core.crypto.SecureHash
import com.r3corda.core.crypto.newSecureRandom
import com.r3corda.core.node.services.testing.MockStorageService
import com.r3corda.core.testing.*
import org.junit.Test
@ -33,7 +34,7 @@ class TransactionGroupTests {
}
interface Commands : CommandData {
class Move() : TypeOnlyCommandData(), Commands
data class Issue(val nonce: Long = SecureRandom.getInstanceStrong().nextLong()) : Commands
data class Issue(val nonce: Long = newSecureRandom().nextLong()) : Commands
data class Exit(val amount: Amount<Currency>) : Commands
}
}

3
core/src/test/kotlin/com/r3corda/core/serialization/TransactionSerializationTests.kt
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@ -3,6 +3,7 @@ package com.r3corda.core.serialization
import com.r3corda.core.contracts.*
import com.r3corda.core.crypto.Party
import com.r3corda.core.crypto.SecureHash
import com.r3corda.core.crypto.newSecureRandom
import com.r3corda.core.node.services.testing.MockStorageService
import com.r3corda.core.seconds
import com.r3corda.core.testing.*
@ -34,7 +35,7 @@ class TransactionSerializationTests {
}
interface Commands : CommandData {
class Move() : TypeOnlyCommandData(), Commands
data class Issue(val nonce: Long = SecureRandom.getInstanceStrong().nextLong()) : Commands
data class Issue(val nonce: Long = newSecureRandom().nextLong()) : Commands
data class Exit(val amount: Amount<Currency>) : Commands
}
}

1
node/src/main/kotlin/com/r3corda/node/internal/AbstractNode.kt
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@ -44,6 +44,7 @@ import java.nio.file.FileAlreadyExistsException
import java.nio.file.Files
import java.nio.file.Path
import java.security.KeyPair
import java.security.Security
import java.time.Clock
import java.time.Instant
import java.util.*

3
node/src/main/kotlin/com/r3corda/node/services/messaging/ArtemisMessagingService.kt
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@ -3,6 +3,7 @@ package com.r3corda.node.services.messaging
import com.google.common.net.HostAndPort
import com.r3corda.core.RunOnCallerThread
import com.r3corda.core.ThreadBox
import com.r3corda.core.crypto.newSecureRandom
import com.r3corda.core.messaging.*
import com.r3corda.core.serialization.SingletonSerializeAsToken
import com.r3corda.core.utilities.loggerFor
@ -115,7 +116,7 @@ class ArtemisMessagingService(val directory: Path, val myHostPort: HostAndPort,
val config = createArtemisConfig(directory, myHostPort)
mq.setConfiguration(config)
val secConfig = SecurityConfiguration()
val password = BigInteger(128, SecureRandom.getInstanceStrong()).toString(16)
val password = BigInteger(128, newSecureRandom()).toString(16)
secConfig.addUser("internal", password)
secConfig.addRole("internal", "internal")
secConfig.defaultUser = "internal"