added use of intValueExact()

dghgit · dghgit · commit c5bc01b5aba4 · 2022-03-20T09:55:39.000+11:00
diff --git a/core/src/main/java/org/bouncycastle/math/field/FiniteFields.java b/core/src/main/java/org/bouncycastle/math/field/FiniteFields.java
@@ -2,6 +2,8 @@
 
 import java.math.BigInteger;
 
+import org.bouncycastle.util.BigIntegers;
+
 public abstract class FiniteFields
 {
     static final FiniteField GF_2 = new PrimeField(BigInteger.valueOf(2));
@@ -39,7 +41,7 @@ public static FiniteField getPrimeField(BigInteger characteristic)
 
         if (bitLength < 3)
         {
-            switch (characteristic.intValue())
+            switch (BigIntegers.intValueExact(characteristic))
             {
             case 2:
                 return GF_2;

Original file line number	Diff line number	Diff line change
`@@ -2,6 +2,8 @@`
`2`	`2`
`3`	`3`	`import java.math.BigInteger;`
`4`	`4`
	`5`	`+import org.bouncycastle.util.BigIntegers;`
	`6`	`+`
`5`	`7`	`public abstract class FiniteFields`
`6`	`8`	`{`
`7`	`9`	`static final FiniteField GF_2 = new PrimeField(BigInteger.valueOf(2));`
`@@ -39,7 +41,7 @@ public static FiniteField getPrimeField(BigInteger characteristic)`
`39`	`41`
`40`	`42`	`if (bitLength < 3)`
`41`	`43`	`{`
`42`		`- switch (characteristic.intValue())`
	`44`	`+ switch (BigIntegers.intValueExact(characteristic))`
`43`	`45`	`{`
`44`	`46`	`case 2:`
`45`	`47`	`return GF_2;`