Github user mridulm commented on a diff in the pull request:
https://github.com/apache/spark/pull/17295#discussion_r106264689
--- Diff:
core/src/main/scala/org/apache/spark/security/CryptoStreamUtils.scala ---
@@ -63,12 +83,40 @@ private[spark] object CryptoStreamUtils extends Logging
{
is: InputStream,
sparkConf: SparkConf,
key: Array[Byte]): InputStream = {
- val properties = toCryptoConf(sparkConf)
val iv = new Array[Byte](IV_LENGTH_IN_BYTES)
- is.read(iv, 0, iv.length)
- val transformationStr = sparkConf.get(IO_CRYPTO_CIPHER_TRANSFORMATION)
- new CryptoInputStream(transformationStr, properties, is,
- new SecretKeySpec(key, "AES"), new IvParameterSpec(iv))
+ var read = 0
+ while (read < iv.length) {
+ val _read = is.read(iv, 0, iv.length)
+ if (_read < 0) {
+ throw new EOFException("Failed to read IV from stream.")
+ }
+ read += _read
+ }
--- End diff --
ByteStreams.readFully instead of the loop
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