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8 |
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9 | sjcl.codec.bytes = {
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10 |
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11 | fromBits: function (arr) {
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12 | var out = [], bl = sjcl.bitArray.bitLength(arr), i, tmp;
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13 | for (i=0; i<bl/8; i++) {
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14 | if ((i&3) === 0) {
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15 | tmp = arr[i/4];
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16 | }
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17 | out.push(tmp >>> 24);
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18 | tmp <<= 8;
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19 | }
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20 | return out;
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21 | },
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22 |
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23 | toBits: function (bytes) {
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24 | var out = [], i, tmp=0;
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25 | for (i=0; i<bytes.length; i++) {
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26 | tmp = tmp << 8 | bytes[i];
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27 | if ((i&3) === 3) {
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28 | out.push(tmp);
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29 | tmp = 0;
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30 | }
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31 | }
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32 | if (i&3) {
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33 | out.push(sjcl.bitArray.partial(8*(i&3), tmp));
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34 | }
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35 | return out;
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36 | }
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37 | };
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