org.bouncycastle.crypto.test
Class SICPositionTest

java.lang.Object
  org.bouncycastle.util.test.SimpleTest
      org.bouncycastle.crypto.test.SICPositionTest

All Implemented Interfaces:

Test

public class SICPositionTest

extends SimpleTest

Regression test for SICBlockCipher position tracking (getPosition/seekTo/skip) around counter-increment carries. getPosition() used to apply the borrow in its counter-minus-IV subtraction as a raw byte decrement, dropping the borrow when the decremented byte wrapped 0x00 to 0xFF - i.e. once an increment had carried across consecutive 0xFF IV bytes - and it never subtracted IV[0], so 8-byte block ciphers with a full-length IV reported a position offset by IV[0] * 2^56 blocks. Also covers skip() from mid-block positions: a backward skip smaller than the intra-block offset used to rewind to the block start instead of moving exactly |n| bytes.

Also covers the full-block IV counter-range bound: the advance since init is limited to 2^64 blocks (one carry past the low 8-byte lane is legal, reaching 2^64 blocks throws), a backward move below the initial counter throws, and the short-IV counter-space check fires on the processBlock() path as well as processBytes().

Nested Class Summary

Nested classes inherited from class org.bouncycastle.util.test.SimpleTest

SimpleTest.TestExceptionOperation

Constructor Summary

SICPositionTest()

Method Summary

java.lang.String	getName()
static void	main(java.lang.String[] args)
void	performTest()

Methods inherited from class org.bouncycastle.util.test.SimpleTest

areEqual, areEqual, areEqual, fail, fail, fail, isEquals, isEquals, isEquals, isEquals, isEquals, isEquals, isEquals, isTrue, isTrue, perform, runTest, runTest, runTests, runTests, testException

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SICPositionTest

public SICPositionTest()

Method Detail

getName

public java.lang.String getName()

Specified by:

getName in interface Test

Specified by:

getName in class SimpleTest

performTest

public void performTest()

Specified by:

performTest in class SimpleTest

main

public static void main(java.lang.String[] args)