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(PowerShell) Blowfish Encryption, ECB, CBC, CFB modesBlowfish encryption. The Chilkat encryption component supports Blowfish key sizes ranging from 32-bits to 448-bits. Chilkat's blowfish implementation supports ECB (Electronic Cookbook) , CBC (Cipher-Block Chaining), and CFB (Cipher Feedback) modes.
Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll" # This example assumes the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. $crypt = New-Object Chilkat.Crypt2 # Attention: use "blowfish2" for the algorithm name: $crypt.CryptAlgorithm = "blowfish2" # CipherMode may be "ecb", "cbc", or "cfb" $crypt.CipherMode = "cbc" # KeyLength (in bits) may be a number between 32 and 448. # 128-bits is usually sufficient. The KeyLength must be a # multiple of 8. $crypt.KeyLength = 128 # The padding scheme determines the contents of the bytes # that are added to pad the result to a multiple of the # encryption algorithm's block size. Blowfish has a block # size of 8 bytes, so encrypted output is always # a multiple of 8. $crypt.PaddingScheme = 0 # EncodingMode specifies the encoding of the output for # encryption, and the input for decryption. # It may be "hex", "url", "base64", or "quoted-printable". $crypt.EncodingMode = "hex" # An initialization vector is required if using CBC or CFB modes. # ECB mode does not use an IV. # The length of the IV is equal to the algorithm's block size. # It is NOT equal to the length of the key. $ivHex = "0001020304050607" $crypt.SetEncodedIV($ivHex,"hex") # The secret key must equal the size of the key. For # 256-bit encryption, the binary secret key is 32 bytes. # For 128-bit encryption, the binary secret key is 16 bytes. $keyHex = "000102030405060708090A0B0C0D0E0F" $crypt.SetEncodedKey($keyHex,"hex") # Encrypt a string... # The input string is 44 ANSI characters (i.e. 44 bytes), so # the output should be 48 bytes (a multiple of 8). # Because the output is a hex string, it should # be 96 characters long (2 chars per byte). $encStr = $crypt.EncryptStringENC("The quick brown fox jumps over the lazy dog.") $($encStr) # Now decrypt: $decStr = $crypt.DecryptStringENC($encStr) $($decStr) |
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