Fix range check

peterdettman · peterdettman · commit 6690389af4fd · 2022-10-06T18:21:28.000+07:00
diff --git a/core/src/main/java/org/bouncycastle/pqc/crypto/lms/SeedDerive.java b/core/src/main/java/org/bouncycastle/pqc/crypto/lms/SeedDerive.java
@@ -51,7 +51,7 @@ public byte[] getMasterSeed()
 
     public byte[] deriveSeed(byte[] target, int offset)
     {
-        if (target.length < digest.getDigestSize())
+        if (target.length - offset < digest.getDigestSize())
         {
             throw new IllegalArgumentException("target length is less than digest size.");
         }

Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ public byte[] getMasterSeed()`
`51`	`51`
`52`	`52`	`public byte[] deriveSeed(byte[] target, int offset)`
`53`	`53`	`{`
`54`		`- if (target.length < digest.getDigestSize())`
	`54`	`+ if (target.length - offset < digest.getDigestSize())`
`55`	`55`	`{`
`56`	`56`	`throw new IllegalArgumentException("target length is less than digest size.");`
`57`	`57`	`}`