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- Bartender 10.1 vbscipt array how to#
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The key and IV are specified as follows (Hex format): With a specified 256-bit AES key and 128-bit initialization vector.
Bartender 10.1 vbscipt array code#
NET code that encrypts the string "Hello World!" The third Booleam argument to ImportRawKey ( ReverseBytes) should be set to True.Ĭonsider the following. NET framework stores its key bytes in the Big-endian order and CryptoAPI/AspEncrypt in the Little-endian order,
Bartender 10.1 vbscipt array password#
When the encryption key is not derived from a password but specified in the form of a raw bit sequence (usually Hex- or Base64-encoded), NET code must set the UseSalt property to true, as follows:
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NET code, it is not sufficient to change the C# code snippet above by replacingĪrray.Copy(shahash, keybytes, 16) ' 128-bitĪrray.Copy(shahash, keybytes, 5) ' 40-bitīecause CryptoAPI/AspEncrypt uses a special all-0 "salt" to generate 40-bit keys.įor more information on 40-bit key generation and salt, see the MSDN CryptDeriveKey Function documentation. Response.Write Key.EncryptText("Hello World!").Base64 Set Key = Context.GenerateKeyFromPassword("My password", calgSHA, calgRC2, 40)
Bartender 10.1 vbscipt array windows#
Originally designed for Windows NT and Windows 2000 still use 40-bit RC2 and RC4 keys. IV property results in random output.Ĥ0-bit encryption is extremely weak and should never be used. NET code requires that an initialization vector be specified even if it is all 0s. The output is also 16Ij1qo4gRbfXuaEE3uTtQ=. Response.Write( Convert.ToBase64String(ciphertext) ) ICryptoTransform ctr = rc2.CreateEncryptor() īyte plaintext = ("Hello World!") īyte ciphertext = ctr.TransformFinalBlock(plaintext, 0, (int)plaintext.Length) SHA1CryptoServiceProvider sha = new SHA1CryptoServiceProvider() īyte shahash = sha.ComputeHash(("My password")) RC2CryptoServiceProvider rc2 = new RC2CryptoServiceProvider() NET equivalent of the code above is as follows: The 160-bit hash function generates more data than necessaryįor the key, so the rest of the bits is discarded. To the key bits, and produces a 128-bit RC2 cipher key. The snippet above implicitly uses the SHA hash function to convert the specified text string Set Blob = Key.EncryptText("Hello World!")Īssuming the Strong or Enhanced cryptographic provider is used, this code snippet produces Set Key = Context.GenerateKeyFromPassword("My password") Set CM = Server.CreateObject("Persits.CryptoManager") The Enhanced, Strong cryptographic providers, and 40 for the Base provider.) The other three arguments are the hash algorithm (SHA by default),Ĭipher algorithm (RC2 by default) and key length (128 by default for Takes 4 arguments, of which only the first one, the password string, NET Equivalent 10.2.1 Standard Key Length HandlingĪspEncrypt's CryptoContext. These and other issues will be covered in detail below.ġ0.2 GenerateKeyFromPassword &. Produces different hash values and, therefore, incompatible keys. When converting a text password to an encryption key, using different character encodings.NET use different algorithms for key padding in case the hash function producesĪ shorter value than necessary for the cipher key (such as, MD5 and 3DES.) NET store the key bytes in the opposite orders. CryptoAPI/AspEncrypt handle 40-bit RC2 key generation differently than.Method, but there is no direct equivalent for this method in. Symmetric encryption in AspEncrypt is usually performed with the help of the GenerateKeyFromPassword.The cipher key compatibility issues between CryptoAPI-based AspEncrypt and the.
Bartender 10.1 vbscipt array how to#
How to create cipher keys that are compatible between the two platforms. This chapter is dedicated to addressing many of these issues and providingĬode samples in classic ASP and. NET,ĭevelopers often run into various key compatibility issues that prevent data encrypted with AspEncryptįrom being correctly decrypted with the. When converting legacy ASP applications that use AspEncrypt to.