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Code Duplication    Length = 2-2 lines in 4 locations

src/BitcoinPHP/BitcoinECDSA/BitcoinECDSA.php 4 locations

@@ 520-521 (lines=2) @@
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        else if($derEvenOrOddCode === '02') // even
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        {
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            $resY = null;
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            if(gmp_strval(gmp_mod($y[0], gmp_init(2, 10)), 10) === '0')
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                $resY = gmp_strval($y[0], 16);
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            if(gmp_strval(gmp_mod($y[1], gmp_init(2, 10)), 10) === '0')
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                $resY = gmp_strval($y[1], 16);
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            if($resY !== null)
@@ 522-523 (lines=2) @@
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            $resY = null;
520 
            if(gmp_strval(gmp_mod($y[0], gmp_init(2, 10)), 10) === '0')
521 
                $resY = gmp_strval($y[0], 16);
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            if(gmp_strval(gmp_mod($y[1], gmp_init(2, 10)), 10) === '0')
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                $resY = gmp_strval($y[1], 16);
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            if($resY !== null)
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            {
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                while(strlen($resY) < 64)
@@ 536-537 (lines=2) @@
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        else if($derEvenOrOddCode === '03') // odd
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        {
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            $resY = null;
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            if(gmp_strval(gmp_mod($y[0], gmp_init(2, 10)), 10) === '1')
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                $resY = gmp_strval($y[0], 16);
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            if(gmp_strval(gmp_mod($y[1], gmp_init(2, 10)), 10) === '1')
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                $resY = gmp_strval($y[1], 16);
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            if($resY !== null)
@@ 538-539 (lines=2) @@
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            $resY = null;
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            if(gmp_strval(gmp_mod($y[0], gmp_init(2, 10)), 10) === '1')
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                $resY = gmp_strval($y[0], 16);
538 
            if(gmp_strval(gmp_mod($y[1], gmp_init(2, 10)), 10) === '1')
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                $resY = gmp_strval($y[1], 16);
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            if($resY !== null)
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            {
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                while(strlen($resY) < 64)