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(PowerShell) RSA Encrypt with SHA-256 hash function and SHA-1 mask functionHow can this Javascript be duplicated using Chilkat? function a(e, t) { var r = s.pki.publicKeyFromPem(e) , n = r.encrypt(t, "RSA-OAEP", { md: s.md.sha256.create(), mgf1: { md: s.md.sha1.create() } }); return s.util.encode64(n) } Note: The OAEP padding uses random bytes in the padding, and therefore each time encryption happens, even using the same data and key, the result will be different -- but still valid. One should not expect to get the same output.
Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll" # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. $pubkey = New-Object Chilkat.PublicKey $sbPem = New-Object Chilkat.StringBuilder $bCrlf = $true $sbPem.AppendLine("-----BEGIN PUBLIC KEY-----",$bCrlf) $sbPem.AppendLine("MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA33TqqLR3eeUmDtHS89qF",$bCrlf) $sbPem.AppendLine("3p4MP7Wfqt2Zjj3lZjLjjCGDvwr9cJNlNDiuKboODgUiT4ZdPWbOiMAfDcDzlOxA",$bCrlf) $sbPem.AppendLine("04DDnEFGAf+kDQiNSe2ZtqC7bnIc8+KSG/qOGQIVaay4Ucr6ovDkykO5Hxn7OU7s",$bCrlf) $sbPem.AppendLine("Jp9TP9H0JH8zMQA6YzijYH9LsupTerrY3U6zyihVEDXXOv08vBHk50BMFJbE9iwF",$bCrlf) $sbPem.AppendLine("wnxCsU5+UZUZYw87Uu0n4LPFS9BT8tUIvAfnRXIEWCha3KbFWmdZQZlyrFw0buUE",$bCrlf) $sbPem.AppendLine("f0YN3/Q0auBkdbDR/ES2PbgKTJdkjc/rEeM0TxvOUf7HuUNOhrtAVEN1D5uuxE1W",$bCrlf) $sbPem.AppendLine("SwIDAQAB",$bCrlf) $sbPem.AppendLine("-----END PUBLIC KEY-----",$bCrlf) # Load the public key object from the PEM. $success = $pubkey.LoadFromString($sbPem.GetAsString()) if ($success -ne $true) { $($pubkey.LastErrorText) exit } $originalData = "This is the original data to be SHA-256 hashed and RSA encrypted." # First we SHA-256 hash the original data. $crypt = New-Object Chilkat.Crypt2 $crypt.HashAlgorithm = "SHA-256" $hashBytes = $crypt.HashString($originalData) # Now to RSA encrypt using OAEP padding with SHA-1 for the mask function. $rsa = New-Object Chilkat.Rsa $rsa.OaepPadding = $true $rsa.OaepHash = "SHA1" $rsa.ImportPublicKeyObj($pubkey) $rsa.EncodingMode = "base64" # Note: The OAEP padding uses random bytes in the padding, and therefore each time encryption happens, # even using the same data and key, the result will be different -- but still valid. One should not expect # to get the same output. $bUsePrivateKey = $false $encryptedStr = $rsa.EncryptBytesENC($hashBytes,$bUsePrivateKey) if ($rsa.LastMethodSuccess -ne $true) { $($rsa.LastErrorText) exit } $("Base64 RSA encrypted output: " + $encryptedStr) |
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