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Code Issues Actions 2 Packages Projects Releases Wiki Activity

core: use newSecureRandom() instead of SecureRandom.getInstanceStrong()

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This commit is contained in:
Andras Slemmer 2016-06-16 17:07:07 +01:00
parent 906c100c29
commit 481d2f7151
5 changed files with 14 additions and 10 deletions
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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)

2
core/src/main/kotlin/com/r3corda/core/crypto/CryptoUtilities.kt
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@ -42,7 +42,7 @@ 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
}
}