test/UseCaseNo2.Tests.ps1
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Import-Module -Name $PSScriptRoot\..\KidRSA.psm1 -Verbose -Force <# AlicesKeys VERBOSE: The value for 'a' is: 67 VERBOSE: The value for 'b' is: 63 VERBOSE: The value for 'a_' is: 2 VERBOSE: The value for 'b_' is: 3 VERBOSE: The value of Private key 'e' (encrypt) is: 8507 VERBOSE: The value of Public key 'd' (decrypt) is: 12723 VERBOSE: The value of 'n' is: 25648 #> $script:AlicesKeys = $(Get-RSAKey -a 67 -b 63 -a_ 2 -b_ 3) <# BobsKeys VERBOSE: The value for 'a' is: 80 VERBOSE: The value for 'b' is: 45 VERBOSE: The value for 'a_' is: 95 VERBOSE: The value for 'b_' is: 69 VERBOSE: The value of Private key 'e' (encrypt) is: 341985 VERBOSE: The value of Public key 'd' (decrypt) is: 248376 VERBOSE: The value of 'n' is: 23601241 #> $script:BobsKeys = $(Get-RSAKey -a 80 -b 45 -a_ 95 -b_ 69) Describe "Bob sends Alice his digital signature." { Context "Bob uses the plain text value of 'BOB' to be his digital signature. A simple-substitution cipher is acheived by ConvertTo-CipherText. The output of passing the value 'BOB' is 10410." { It "Should return cipher value of: 10410" -TestCases @( @{ PlainText = "BOB" }) { Param($PlainText) $Results = ConvertTo-CipherText $PlainText $Results | Should -Be 10410 } } Context "Since he is creating a digital signature, Bob then takes this cipher text and multiples it with his private key and modulate with n. And with that value he multiples it by 'e mod n'. So the equation is: d'*s modulo n' * (e modulo n)." { It "Should return encrypted cipher text in the value of: 111091985737" -TestCases @( @{ CipherText = 10410 APublicKey = $script:AlicesKeys.e AN = $script:AlicesKeys.n BPrivateKey = $script:BobsKeys.d BN = $script:BobsKeys.n }) { Param($CipherText, $APublicKey, $AN, $BPrivateKey, $BN) $Result1 = ($BPrivateKey * $CipherText) % $BN $Results = $Result1 * $($APublicKey % $AN) $Results | Should -Be 111091985737 } } Context "Alice recieves Bob's encrypted message (digital signature) and does similar computation steps. The value that is returned is Bob's digital signature." { It "Should return cipher text in the value of: 55358729197065" -TestCases @( @{ EncryptedCipherText = 111091985737 APrivateKey = $script:AlicesKeys.d AN = $script:AlicesKeys.n BPublicKey = $script:BobsKeys.e BN = $script:BobsKeys.n }) { Param($EncryptedCipherText, $APrivateKey, $AN, $BPublicKey, $BN) $Result1 = $APrivateKey * $($APrivateKey % $AN) $Results = $Result1 * $($BPublicKey % $BN) $Results | Should -Be 55358729197065 } } } |