Merge pull request #162 from cconlon/rsaKeyPairGenFix

JCE: check RSA KeyPairGenerator key size against Rsa.RSA_MIN_SIZE

Author: rlm2002

src/main/java/com/wolfssl/provider/jce/WolfCryptKeyPairGenerator.java

@@ -232,6 +232,14 @@ else if (keysize == 8192) {
         }
 
         if (type == KeyType.WC_RSA || type == KeyType.WC_RSA_PSS) {
+
+            /* Sanity check on key size */
+            if (keysize < Rsa.RSA_MIN_SIZE) {
+                throw new InvalidParameterException(
+                    "RSA key size too small, min is " +
+                    Rsa.RSA_MIN_SIZE);
+            }
+
             /* Set default RSA exponent for wolfSSL */
             this.publicExponent = Rsa.getDefaultRsaExponent();
         }

src/test/java/com/wolfssl/provider/jce/test/WolfCryptKeyPairGeneratorTest.java

@@ -259,7 +259,7 @@ public void testKeyPairGeneratorRsaInitializeWithKeySize()
             /* bad key size should fail */
             try {
                 kpg.initialize(10);
-            } catch (WolfCryptException e) {}
+            } catch (InvalidParameterException e) {}
         }
     }