diff --git a/crypto/src/crypto/BufferedBlockCipher.cs b/crypto/src/crypto/BufferedBlockCipher.cs
index 3a98798a2..c87d2daf9 100644
--- a/crypto/src/crypto/BufferedBlockCipher.cs
+++ b/crypto/src/crypto/BufferedBlockCipher.cs
@@ -118,7 +118,7 @@ namespace Org.BouncyCastle.Crypto
}
/**
- * process a single byte, producing an output block if neccessary.
+ * process a single byte, producing an output block if necessary.
*
* @param in the input byte.
* @param out the space for any output that might be produced.
@@ -223,13 +223,10 @@ namespace Org.BouncyCastle.Crypto
if (outLength > 0)
{
- if ((outOff + outLength) > output.Length)
- {
- throw new DataLengthException("output buffer too short");
- }
+ Check.OutputLength(output, outOff, outLength, "output buffer too short");
}
- int resultLen = 0;
+ int resultLen = 0;
int gapLen = buf.Length - bufOff;
if (length > gapLen)
{
@@ -339,17 +336,10 @@ namespace Org.BouncyCastle.Crypto
{
if (bufOff != 0)
{
- if (!cipher.IsPartialBlockOkay)
- {
- throw new DataLengthException("data not block size aligned");
- }
-
- if (outOff + bufOff > output.Length)
- {
- throw new DataLengthException("output buffer too short for DoFinal()");
- }
-
- // NB: Can't copy directly, or we may write too much output
+ Check.DataLength(!cipher.IsPartialBlockOkay, "data not block size aligned");
+ Check.OutputLength(output, outOff, bufOff, "output buffer too short for DoFinal()");
+
+ // NB: Can't copy directly, or we may write too much output
cipher.ProcessBlock(buf, 0, buf, 0);
Array.Copy(buf, 0, output, outOff, bufOff);
}
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