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Side by Side Diff: srtp/crypto/math/math.c

Issue 889083003: Update libsrtp to upstream 1.5.0 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libsrtp@master
Patch Set: Updated to libsrtp 1.5.1 Created 5 years, 10 months ago
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1 /* 1 /*
2 * math.c 2 * math.c
3 * 3 *
4 * crypto math operations and data types 4 * crypto math operations and data types
5 * 5 *
6 * David A. McGrew 6 * David A. McGrew
7 * Cisco Systems, Inc. 7 * Cisco Systems, Inc.
8 */ 8 */
9 /* 9 /*
10 * 10 *
(...skipping 24 matching lines...) Expand all
35 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 35 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
36 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 36 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
37 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
41 * OF THE POSSIBILITY OF SUCH DAMAGE. 41 * OF THE POSSIBILITY OF SUCH DAMAGE.
42 * 42 *
43 */ 43 */
44 44
45 #ifdef HAVE_CONFIG_H
46 #include <config.h>
47 #endif
48
45 #include "crypto_math.h" 49 #include "crypto_math.h"
46 50
47 int 51 int
48 octet_weight[256] = { 52 octet_weight[256] = {
49 0, 1, 1, 2, 1, 2, 2, 3, 53 0, 1, 1, 2, 1, 2, 2, 3,
50 1, 2, 2, 3, 2, 3, 3, 4, 54 1, 2, 2, 3, 2, 3, 3, 4,
51 1, 2, 2, 3, 2, 3, 3, 4, 55 1, 2, 2, 3, 2, 3, 3, 4,
52 2, 3, 3, 4, 3, 4, 4, 5, 56 2, 3, 3, 4, 3, 4, 4, 5,
53 1, 2, 2, 3, 2, 3, 3, 4, 57 1, 2, 2, 3, 2, 3, 3, 4,
54 2, 3, 3, 4, 3, 4, 4, 5, 58 2, 3, 3, 4, 3, 4, 4, 5,
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624 628
625 void 629 void
626 v128_set_bit_to(v128_t *x, int i, int y){ 630 v128_set_bit_to(v128_t *x, int i, int y){
627 _v128_set_bit_to(x, i, y); 631 _v128_set_bit_to(x, i, y);
628 } 632 }
629 633
630 634
631 #endif /* DATATYPES_USE_MACROS */ 635 #endif /* DATATYPES_USE_MACROS */
632 636
633 637
634 static INLINE void 638 static inline void
635 v128_left_shift2(v128_t *x, int num_bits) { 639 v128_left_shift2(v128_t *x, int num_bits) {
636 int i; 640 int i;
637 int word_shift = num_bits >> 5; 641 int word_shift = num_bits >> 5;
638 int bit_shift = num_bits & 31; 642 int bit_shift = num_bits & 31;
639 643
640 for (i=0; i < (4-word_shift); i++) { 644 for (i=0; i < (4-word_shift); i++) {
641 x->v32[i] = x->v32[i+word_shift] << bit_shift; 645 x->v32[i] = x->v32[i+word_shift] << bit_shift;
642 } 646 }
643 647
644 for ( ; i < word_shift; i++) { 648 for ( ; i < word_shift; i++) {
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793 return -1; 797 return -1;
794 return value + 24; 798 return value + 24;
795 } 799 }
796 800
797 /* high_bit not done yet */ 801 /* high_bit not done yet */
798 802
799 803
800 804
801 805
802 806
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