rspec/rules/S5547/kotlin/how-to-fix-it/java-cryptographic-extension.adoc
2023-06-12 15:58:19 +02:00

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== How to fix it in Java Cryptographic Extension
=== Code examples
include::../../common/fix/code-rationale.adoc[]
==== Noncompliant code example
[source,kotlin,diff-id=1,diff-type=noncompliant]
----
import javax.crypto.NoSuchPaddingException
import java.security.NoSuchAlgorithmException
import javax.crypto.Cipher
fun main(args: Array<String>) {
try {
val des = Cipher.getInstance("DES") // Noncompliant
} catch (e: NoSuchAlgorithmException) {
// ...
} catch (e: NoSuchPaddingException) {
// ...
}
}
----
==== Compliant solution
[source,kotlin,diff-id=1,diff-type=compliant]
----
import javax.crypto.NoSuchPaddingException
import java.security.NoSuchAlgorithmException
import javax.crypto.Cipher
fun main(args: Array<String>) {
try {
val aes = Cipher.getInstance("AES/GCM/NoPadding")
} catch (e: NoSuchAlgorithmException) {
// ...
} catch (e: NoSuchPaddingException) {
// ...
}
}
----
=== How does this work?
include::../../common/fix/strong-cryptography.adoc[]