diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/gmss/util/GMSSUtil.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/gmss/util/GMSSUtil.java | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/gmss/util/GMSSUtil.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/gmss/util/GMSSUtil.java deleted file mode 100644 index 57678d854..000000000 --- a/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/crypto/gmss/util/GMSSUtil.java +++ /dev/null @@ -1,151 +0,0 @@ -package org.spongycastle.pqc.crypto.gmss.util; - -/** - * This class provides several methods that are required by the GMSS classes. - */ -public class GMSSUtil -{ - /** - * Converts a 32 bit integer into a byte array beginning at - * <code>offset</code> (little-endian representation) - * - * @param value the integer to convert - */ - public byte[] intToBytesLittleEndian(int value) - { - byte[] bytes = new byte[4]; - - bytes[0] = (byte)((value) & 0xff); - bytes[1] = (byte)((value >> 8) & 0xff); - bytes[2] = (byte)((value >> 16) & 0xff); - bytes[3] = (byte)((value >> 24) & 0xff); - return bytes; - } - - /** - * Converts a byte array beginning at <code>offset</code> into a 32 bit - * integer (little-endian representation) - * - * @param bytes the byte array - * @return The resulting integer - */ - public int bytesToIntLittleEndian(byte[] bytes) - { - - return ((bytes[0] & 0xff)) | ((bytes[1] & 0xff) << 8) - | ((bytes[2] & 0xff) << 16) | ((bytes[3] & 0xff)) << 24; - } - - /** - * Converts a byte array beginning at <code>offset</code> into a 32 bit - * integer (little-endian representation) - * - * @param bytes the byte array - * @param offset the integer offset into the byte array - * @return The resulting integer - */ - public int bytesToIntLittleEndian(byte[] bytes, int offset) - { - return ((bytes[offset++] & 0xff)) | ((bytes[offset++] & 0xff) << 8) - | ((bytes[offset++] & 0xff) << 16) - | ((bytes[offset] & 0xff)) << 24; - } - - /** - * This method concatenates a 2-dimensional byte array into a 1-dimensional - * byte array - * - * @param arraycp a 2-dimensional byte array. - * @return 1-dimensional byte array with concatenated input array - */ - public byte[] concatenateArray(byte[][] arraycp) - { - byte[] dest = new byte[arraycp.length * arraycp[0].length]; - int indx = 0; - for (int i = 0; i < arraycp.length; i++) - { - System.arraycopy(arraycp[i], 0, dest, indx, arraycp[i].length); - indx = indx + arraycp[i].length; - } - return dest; - } - - /** - * This method prints the values of a 2-dimensional byte array - * - * @param text a String - * @param array a 2-dimensional byte array - */ - public void printArray(String text, byte[][] array) - { - System.out.println(text); - int counter = 0; - for (int i = 0; i < array.length; i++) - { - for (int j = 0; j < array[0].length; j++) - { - System.out.println(counter + "; " + array[i][j]); - counter++; - } - } - } - - /** - * This method prints the values of a 1-dimensional byte array - * - * @param text a String - * @param array a 1-dimensional byte array. - */ - public void printArray(String text, byte[] array) - { - System.out.println(text); - int counter = 0; - for (int i = 0; i < array.length; i++) - { - System.out.println(counter + "; " + array[i]); - counter++; - } - } - - /** - * This method tests if an integer is a power of 2. - * - * @param testValue an integer - * @return <code>TRUE</code> if <code>testValue</code> is a power of 2, - * <code>FALSE</code> otherwise - */ - public boolean testPowerOfTwo(int testValue) - { - int a = 1; - while (a < testValue) - { - a <<= 1; - } - if (testValue == a) - { - return true; - } - - return false; - } - - /** - * This method returns the least integer that is greater or equal to the - * logarithm to the base 2 of an integer <code>intValue</code>. - * - * @param intValue an integer - * @return The least integer greater or equal to the logarithm to the base 2 - * of <code>intValue</code> - */ - public int getLog(int intValue) - { - int log = 1; - int i = 2; - while (i < intValue) - { - i <<= 1; - log++; - } - return log; - } -} |