Encrypts a string. Encrypt uses a symmetric key-based algorithm in which the same key is used to encrypt and decrypt a string. The security of the encrypted string depends on maintaining the secrecy of the key. Encrypt uses an XOR-based algorithm that uses a pseudo-random 32-bit key based on a seed passed by the user as a parameter to the function. The resultant data is UUencoded and may be as much as three times the original size.
Encrypt(string, seed)
Parameter |
Description |
---|---|
string |
String to encrypt |
seed |
String that specifies the seed used to generate the 32-bit key needed to encrypt the string |
<!--- This example shows the use of Encrypt and Decrypt ---> <html> <head> <title>Encrypt Example</title> </head> <body bgcolor = silver> <H3>Encrypt Example</H3> <P>This function allows for the encryption and decryption of a string. Try it out by entering your own string and a key of your own choosing and seeing the results. <cfif IsDefined("FORM.myString")> <cfset string = FORM.myString> <cfset key = FORM.myKey> <cfset encrypted = encrypt(string, key)> <cfset decrypted = decrypt(encrypted, key)> <cfoutput> <H4><B>The string:</B></H4> #string# <BR> <H4><B>The key:</B></H4> #key#<BR> <H4><B>Encrypted:</B></H4> #encrypted#<BR> <H4><B>Decrypted:</B></H4> #decrypted#<BR> </cfoutput> </cfif> <form action = "encrypt.cfm" method = "post"> <P>Input your key: <P><input type = "Text" name = "myKey" value = "foobar"> <P>Input your string to be encrypted: <P><textArea name = "myString" cols = "40" rows = "5" WRAP = "VIRTUAL"> This string will be encrypted (try typing some more) </textArea> <input type = "Submit" value = "Encrypt my String"> </FORM> </body> </html>