diff options
Diffstat (limited to 'core/src/main/java/org/bouncycastle/math/ec/LongArray.java')
| -rw-r--r-- | core/src/main/java/org/bouncycastle/math/ec/LongArray.java | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/ec/LongArray.java b/core/src/main/java/org/bouncycastle/math/ec/LongArray.java index ad3e6225..4b972fc6 100644 --- a/core/src/main/java/org/bouncycastle/math/ec/LongArray.java +++ b/core/src/main/java/org/bouncycastle/math/ec/LongArray.java @@ -521,35 +521,52 @@ class LongArray long[] c1 = new long[cLen]; long[] c2 = new long[cLen]; long[] c3 = new long[cLen]; + long[] c10 = new long[cLen]; + long[] c32 = new long[cLen]; - long bit1 = 1L << 48; + long bit3 = 1L << 48; for (;;) { - long bit2 = bit1 >>> 16, bit3 = bit2 >>> 16, bit4 = bit3 >>> 16; + long bit2 = bit3 >>> 16, bit1 = bit2 >>> 16, bit0 = bit1 >>> 16; + long bit32 = bit3 | bit2, bit10 = bit1 | bit0; for (int aPos = 0; aPos < aLen; ++aPos) { long aVal = a[aPos]; - if ((aVal & bit1) != 0) + + if ((aVal & bit32) == bit32) + { + addShiftedByWordsQuick(c32, aPos, b); + } + else + if ((aVal & bit3) != 0) { addShiftedByWordsQuick(c3, aPos, b); } + else if ((aVal & bit2) != 0) { addShiftedByWordsQuick(c2, aPos, b); } - if ((aVal & bit3) != 0) + + if ((aVal & bit10) == bit10) + { + addShiftedByWordsQuick(c10, aPos, b); + } + else + if ((aVal & bit1) != 0) { addShiftedByWordsQuick(c1, aPos, b); } - if ((aVal & bit4) != 0) + else + if ((aVal & bit0) != 0) { addShiftedByWordsQuick(c0, aPos, b); } } - if ((bit1 <<= 1) == 0L) + if ((bit3 <<= 1) == 0L) { break; } @@ -557,6 +574,11 @@ class LongArray shiftLeftQuick(b); } + addQuick(c3, c32, cLen); + addQuick(c2, c32, cLen); + addQuick(c1, c10, cLen); + addQuick(c0, c10, cLen); + addShiftedByBitsQuick(c0, c1, cLen, 16); addShiftedByBitsQuick(c0, c2, cLen, 32); addShiftedByBitsQuick(c0, c3, cLen, 48); |