RSA code: Difference between revisions
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Note: as indicated at http://www.jsoftware.com/help/dictionary/special.htm, <code>N&|@^</code> does not bother with creating the exponential intermediate result. |
Note: as indicated at http://www.jsoftware.com/help/dictionary/special.htm, <code>N&|@^</code> does not bother with creating the exponential intermediate result. |
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=={{header|Kotlin}}== |
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<lang scala>// version 1.1.4-3 |
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import java.math.BigInteger |
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fun main(args: Array<String>) { |
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val n = BigInteger("9516311845790656153499716760847001433441357") |
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val e = BigInteger("65537") |
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val d = BigInteger("5617843187844953170308463622230283376298685") |
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val c = Charsets.UTF_8 |
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val plainText = "Rosetta Code" |
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println("PlainText : $plainText") |
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val bytes = plainText.toByteArray(c) |
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val plainNum = BigInteger(bytes) |
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println("As number : $plainNum") |
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if (plainNum > n) { |
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println("Plaintext is too long") |
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return |
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} |
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val enc = plainNum.modPow(e, n) |
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println("Encoded : $enc") |
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val dec = enc.modPow(d, n) |
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println("Decoded : $dec") |
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val decText = dec.toByteArray().toString(c) |
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println("As text : $decText") |
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}</lang> |
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{{out}} |
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<pre> |
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PlainText : Rosetta Code |
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As number : 25512506514985639724585018469 |
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Encoded : 916709442744356653386978770799029131264344 |
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Decoded : 25512506514985639724585018469 |
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As text : Rosetta Code |
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</pre> |
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=={{header|Mathematica}}== |
=={{header|Mathematica}}== |
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