Robin P. Clark
a4b3002f75
made it create a bc script for larger keys (rather thn make the web page wait for the long calculations).
49 lines
1023 B
Bash
Executable File
49 lines
1023 B
Bash
Executable File
#!/bin/bash
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# Calculate large exponent
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#echo "cbe.sh called BASH SCRIPT"
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# php in 'safe mode' (god dag yx skaft)
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# passes the parameters sent in one string
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# turning off safe mode in the php.ini file
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# does not seem to change this behaviour.
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# to overcome this sed will extract the variables
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#echo "argument 1:" $1
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#
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c=`echo $1 | sed 's/.*A \([0-9]*\) B.*/\1/'`
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d=`echo $1 | sed 's/.*B \([0-9]*\) C.*/\1/'`
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n=`echo $1 | sed 's/.*C \([0-9]*\) D.*/\1/'`
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args=`echo "<p> c " $c " d " $d " n " $n "</p>"`
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#
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# calculate c^d%n
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date=`date | sed 's\:\_\g' | sed 's\ \_\g'`
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echo "date on this server" $date
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echo "<br><hr>"
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#echo " calc_big_expon.bc > calc_big_expon.$$.$date.bc ";
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echo "<br><hr>"
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echo "created a custom bash script to run to decode using the secret key using residues"
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echo "<br><hr>"
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echo " custom bc script produced "
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echo "<pre>"
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cat calc_big_expon.bc
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echo "r=1;"
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echo "t($c,$d,$n);"
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echo "r;"
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echo "</pre>"
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echo "<br><hr>"
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Use the above bc script to decode the message.
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echo "<br><hr>"
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