DecryptBinary

DecryptBinary(input,key,[algorithm, prefix, iterations])

<h3>DecryptBinary Example</h3> 
< !--- Do the following if the form has been submitted. ---> 
<cfif IsDefined("Form.myfile")> 
<cffile file="#Form.myfile#" action="readBinary" variable="myData"> 
<cfscript> 
/* GenerateSecretKey does not generate key for the CFMX_COMPAT algorithm, 
so use the key from the form. 
*/ 
if (Form.myAlgorithm EQ "CFMX_COMPAT") 
theKey=Form.MyKey; 
// For all other encryption techniques, generate a secret key. 
else 
theKey=generateSecretKey(Form.myAlgorithm); 
//Encrypt the string 
encrypted=encryptBinary(myData, theKey, Form.myAlgorithm); 
//Decrypt it 
decrypted=decryptBinary(encrypted, theKey, Form.myAlgorithm); 
</cfscript> 
<cfset encfile="#Form.myfile#" & "_enc"> 
<cfset decfile="#Form.myfile#" & "_dec"> 
<cffile file="#encfile#" action="write" output="#encrypted#"> 
<cffile file="#decfile#" action="write" output="#decrypted#"> 
<!--- Display the values used for encryption and decryption, 
and the results. ---> 
<cfoutput> 
<b>The algorithm:</b> #Form.myAlgorithm#<br> 
<b>The key:</B> #theKey#<br> 
<br> 
<b>The InputFile:</b> #Form.myfile# <br> 
<br> 
<b>Encrypted:</b> #encfile#<br> 
<br> 
<b>Decrypted:</b> #decfile#<br> 
</cfoutput> 
</cfif> 
<!--- The input form. ---> 
<form action="#CGI.SCRIPT_NAME#" method="post"> 
<b>Select the algorithm</b><br> 
<select size="1" name="myAlgorithm"> 
<option selected>CFMX_COMPAT</option> 
<option>AES</option> 
<option>DES</option> 
<option>DESEDE</option> 
</select><br> 
<br> 
<b>Input your key</b> (used for CFMX_COMPAT encryption only)<br> 
<input type = "Text" name = "myKey" value = "MyKey"><br> 
<br> 
<b>Enter filename to encrypt</b><br> 
<input type="text" name="myfile" value="Enter the path of the file to encrypt"><br> 
<input type = "Submit" value = "Encrypt file "> 
</form>

<cfscript>  
    // binary data  
    b = ToBinary("abcd")  
    // generate the key  
    key = GenerateSecretKey("AES")  
    iterations="AssoicatedData"  
    randomIntegers = [];  
    // generate the SALT value  
    for ( i = 1 ; i <= 12 ; i++ ) {  
        arrayAppend( randomIntegers, randRange( -128, 127, "SHA1PRNG" ) );  
    }  
    initializationVector = javaCast( "byte[]", randomIntegers )  
    // encrypt binary  
    enc1 = EncryptBinary(binaryData=b,   
                   key=key,   
                   algorithm="AES/GCM/NoPadding",  
                   IV_Salt=initializationVector,   
                   iterations=iterations)  
    // decrypt binary  
    dec1=DecryptBinary(binaryData=enc1,   
                key=key,   
                algorithm="AES/GCM/NoPadding",  
                prefix=initializationVector,  
                iterations=iterations)  
    writeDump(dec1)      
</cfscript>