Java: add SHA384 to list of secure algorithms

Author: Jami Cogswell

java/ql/lib/semmle/code/java/security/Encryption.qll

@@ -246,7 +246,7 @@ string getInsecureAlgorithmRegex() {
 string getASecureAlgorithmName() {
   result =
     [
-      "RSA", "SHA-?256", "SHA-?512", "CCM", "GCM", "AES(?![^a-zA-Z](ECB|CBC/PKCS[57]Padding))",
+      "RSA", "SHA-?(256|384|512)", "CCM", "GCM", "AES(?![^a-zA-Z](ECB|CBC/PKCS[57]Padding))",
       "Blowfish", "ECIES", "SHA3-(256|384|512)"
     ]
 }

java/ql/src/change-notes/2024-11-24-sha2.md

@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* Added SHA-384 to the list of secure hashing algorithms. As a result the `java/potentially-weak-cryptographic-algorithm` query should no longer flag up uses of SHA-384.

java/ql/test/query-tests/security/CWE-327/semmle/tests/WeakHashing.java

@@ -19,7 +19,7 @@ void hashing() throws NoSuchAlgorithmException, IOException {
 
         // BAD: Using a strong hashing algorithm but with a weak default
         MessageDigest bad3 = MessageDigest.getInstance(props.getProperty("hashAlg2", "MD5"));
-        
+
         // GOOD: Using a strong hashing algorithm
         MessageDigest ok = MessageDigest.getInstance(props.getProperty("hashAlg2"));
 
@@ -28,5 +28,8 @@ void hashing() throws NoSuchAlgorithmException, IOException {
 
         // GOOD: Using a strong hashing algorithm
         MessageDigest ok3 = MessageDigest.getInstance("SHA3-512");
+
+         // GOOD: Using a strong hashing algorithm
+        MessageDigest ok4 = MessageDigest.getInstance("SHA384");
     }
 }