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| author | CGantert345 <57003061+CGantert345@users.noreply.github.com> | 2022-01-25 13:33:37 +0100 |
|---|---|---|
| committer | CGantert345 <57003061+CGantert345@users.noreply.github.com> | 2022-01-25 13:33:37 +0100 |
| commit | 7af6c4ca50322258bbd23214920c4c9122482966 (patch) | |
| tree | 83be3be35d497fbdc00bc5c10a7dc0bad2bd8aad /src/main/java/org/uic/barcode/asn1/uper | |
| parent | signature validation changed to work with teh dynamic header version 2. (diff) | |
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Diffstat (limited to 'src/main/java/org/uic/barcode/asn1/uper')
| -rw-r--r-- | src/main/java/org/uic/barcode/asn1/uper/AsnUtils.java | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/main/java/org/uic/barcode/asn1/uper/AsnUtils.java b/src/main/java/org/uic/barcode/asn1/uper/AsnUtils.java index dbb95c9..414f181 100644 --- a/src/main/java/org/uic/barcode/asn1/uper/AsnUtils.java +++ b/src/main/java/org/uic/barcode/asn1/uper/AsnUtils.java @@ -1,5 +1,7 @@ package org.uic.barcode.asn1.uper;
+import java.math.BigInteger;
+
public class AsnUtils {
@@ -55,5 +57,19 @@ public class AsnUtils { boolean result = (bytes[index / 8] & mask[index % 8]) != 0;
return result;
}
+
+ public static byte[] shiftBytesToLeft(byte[] bytes, int shift) {
+
+ // create from array
+ BigInteger bigInt = new BigInteger(bytes);
+
+ // shift
+ BigInteger shiftInt = bigInt.shiftLeft(shift);
+
+ // back to array
+ return shiftInt.toByteArray();
+
+ }
+
}
|