jetbrains.exodus.crypto.Krypt.kt Maven / Gradle / Ivy
/**
* Copyright 2010 - 2022 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
*
* https://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
import jetbrains.exodus.InvalidSettingException
import jetbrains.exodus.util.HexUtil
import java.io.InputStream
import java.io.OutputStream
fun newCipherProvider(cipherId: String) = StreamCipherProvider.getProvider(cipherId) ?:
throw ExodusCryptoException("Failed to load StreamCipherProvider with id = $cipherId")
fun newCipher(cipherId: String): StreamCipher = newCipherProvider(cipherId).newCipher()
fun StreamCipher.with(key: ByteArray, iv: Long) = this.apply { init(key, iv) }
fun toBinaryKey(cipherKey: String): ByteArray {
if (cipherKey.length and 1 == 1) {
throw InvalidSettingException("Odd length of hex representation of cipher key")
}
return HexUtil.stringToByteArray(cipherKey)
}
infix fun OutputStream.encryptBy(cipher: StreamCipher) = StreamCipherOutputStream(this, cipher)
infix fun InputStream.decryptBy(cipherGetter: () -> StreamCipher) = StreamCipherInputStream(this, cipherGetter)
internal fun StreamCipher.cryptAsInt(b: Byte) = this.crypt(b).toInt() and 0xff