SeKurity
2.0.0indexedOffers utility functions for data encryption and decryption without key management, featuring `StringCipher`, `FileCipher`, and `AESCipher` for byte and stream manipulation.
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SeKurity
Utility functions for data Encryption and Decryption
This library provides a couple of classes for easy encryption and decryption of data without key management for API 23 or above.
Helpers
StringCipherFileCipher
Ciphers
AESCipher(bytes or bytes stream manipulation)
Setup
In your module build.gradle include the following dependency
implementation 'com.msignoretto.sekurity:sekurity:1.1.0'
Usage
Helpers
StringCipher
val appKeyStore = AppKeyStore(this)
val key = appKeyStore.getOrGenerate()
val stringCipher = StringCipher(cipher = AESCipher())
val plainText = "I'm A plain text"
val encryptedData = stringCipher.encrypt(key, plainText)
val plainTextResult = stringCipher.decrypt(key, encryptedData)
FileCipher
val appKeyStore = AppKeyStore(this)
val key = appKeyStore.getOrGenerate()
val text = "I'm a text in a file"
val file = File.createTempFile("test", null)
file.writeText(text, Charset.defaultCharset())
val fileOutput = File.createTempFile("testEncrypt", null)
val fileResult = File.createTempFile("testResult", null)
fileCipher.encrypt(key, file, fileOutput)
fileCipher.decrypt(key, fileOutput, fileResult)
Raw Ciphers
AESCipher
encrypting bytes
val appKeyStore = AppKeyStore(this)
val key = appKeyStore.getOrGenerate()
val plainData = Random.Default.nextBytes(23)
val cipherData = cipher.encrypt(key, plainData)
val plainDataBack = cipher.decrypt(key, cipherData)
encrypting streams
val appKeyStore = AppKeyStore(this)
val key = appKeyStore.getOrGenerate()
val plainData = Random.nextBytes(23)
val plainStream = ByteArrayInputStream(plainData)
val encryptedStream = ByteArrayOutputStream(400)
val plainStreamResult = ByteArrayOutputStream(400)
cipher.encryptStream(key, plainStream, encryptedStream)
cipher.decryptStream(key, ByteArrayInputStream(encryptedStream.toByteArray()), plainStreamResult)
Future improvements
- Support Android API lower than 23
- Add
ParcelableCipher - Allow users to specify key alias
- Support different algorithms