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Using CF10 AES-256 (AES/CBC/PKCS5Padding algorithm) I'm trying to store the encrypted string in a MySQL column (BLOB) and getting this error:

java.lang.String cannot be cast to [B

I've tried the default UU and base64 encodings and get the same error (semi-related - any advantages to storing in base64 over UU or vice versa?).

My code right now is just a simple test update query. I've tried setting the cfsqltype to both blob and varchar on my cfqueryparam (and I've tried no cfqueryparam).

Here's my code where I have it now after suggestions from Jason. I'm stuck on getting the decrypted string back though.

<cfset thePlainText = '010101939393923490 this is my string to encrypt'/>
<cfset theKey = application.sec.AESKey256/>
<cfset theAlgorithm  = "AES/CBC/PKCS5Padding" />
<cfset theEncoding  = "base64" />
<cfset encryptedString = toBinary(encrypt(thePlainText, theKey, theAlgorithm, theEncoding)) />

<cfquery name="upd" datasource="#myds#">
  UPDATE table SET
    field = <cfqueryparam cfsqltype="cf_sql_blob" value="#encryptedString#"/>
   WHERE id=1
</cfquery>

After that it's all well and good. I have a blob field in the db and it's storing the data. So now if I want to select it back I'm hitting a snag:

<cfquery name="qry" datasource="#myds#">
  SELECT field
    FROM table
   WHERE id=1
</cfquery>

I thought this would work:

<cfset decryptedString = decrypt(toString(qry.field), theKey, theAlgorithm, theEncoding)/>

But I'm getting "An error occurred while trying to encrypt or decrypt your input string: The input and output encodings are not same"

If I dump the encrypted string var and the qry query the encrypted string vs. the dumped data are indeed different

SOLVED (toBase64 not toString)

<cfset decryptedString = decrypt(toBase64(qry.field), theKey, theAlgorithm, theEncoding)/>
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1 回答 1

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您正在尝试将字符串存储在 BLOB 字段中。ColdFusion 的 encrypt() 方法返回一个字符串，而不是二进制对象。因此，您可以将其存储在 VARCHAR 中，也可以将其转换为二进制对象。

 <cfset cipher = encrypt("... blah blah blah") />
 <cfset binCipher = binaryDecode(cipher, "Base64") />

然后存储 binCipher。

继续在 encrypt() 调用中使用 Base64 编码。

于 2013-05-30T16:27:32.900 回答