Crypto: Alterations to OpenSSL cipher algorithms to use new fixed keysize predicate.

java/ql/lib/experimental/quantum/JCA.qll

@@ -353,7 +353,7 @@ module JCAModel {
       else result instanceof KeyOpAlg::TUnknownKeyOperationAlgorithmType
     }
 
-    override string getKeySizeFixed() {
+    override int getKeySizeFixed() {
       none() // TODO: implement to handle variants such as AES-128
     }
 
@@ -1104,7 +1104,7 @@ module JCAModel {
       KeyGeneratorFlowAnalysisImpl::getInitFromUse(this, _, _).getKeySizeArg() = result.asExpr()
     }
 
-    override string getKeySizeFixed() { none() }
+    override int getKeySizeFixed() { none() }
   }
 
   class KeyGeneratorCipherAlgorithm extends CipherStringLiteralAlgorithmInstance {
@@ -1310,7 +1310,7 @@ module JCAModel {
       result.asExpr() = this.getKeySpecInstantiation().(PBEKeySpecInstantiation).getKeyLengthArg()
     }
 
-    override string getKeySizeFixed() { none() }
+    override int getKeySizeFixed() { none() }
 
     override string getOutputKeySizeFixed() { none() }