jetbrains.exodus.crypto.InitializationVektor.kt Maven / Gradle / Ivy

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Xodus is pure Java transactional schema-less embedded database

There is a newer version: 2.0.1

/**
 * Copyright 2010 - 2019 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jetbrains.exodus.crypto

const val LONG_BYTES = java.lang.Long.SIZE / java.lang.Byte.SIZE

/**
 * Converts `Long` initialization vector to a `ByteArray` of size 8.
 */
fun Long.toByteArray(): ByteArray {
    return toByteArray(LONG_BYTES)
}

/**
 * Converts `Long` initialization vector to a `ByteArray` of specified `size`.
 */
fun Long.toByteArray(size: Int): ByteArray {
    val result = ByteArray(size)
    var l = this
    repeat(size) {
        result[it] = (l and 0xff).toByte()
        l = l shr java.lang.Byte.SIZE
    }
    return result
}