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Resolved Using Triple DES Encryption

  1. How-to
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  1. Jeff Gilpin
    Jeff Gilpin
  2. PowerBuilder
  3. Monday, 14 January 2019 21:05 PM UTC

I am having issues using the new CrypterObject.  I am unable to get SymmetricEncrypt to work with Triple DES (TDES!).  It keeps raising an error with the key size being invalid.  I have tried using keys (BLOB) with both 128 characters and 192 characters.  Both raise errors. 

I have no trouble testing AES encryption with a 16 character (blob) key.  (Sample provided in Appeon docs)

Does anyone have a simple code snippet that works using Triple DES?

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Responses (3)
Jeff Gilpin
Jeff Gilpin Accepted Answer Pending Moderation
  1. Monday, 14 January 2019 23:44 PM UTC
  2. PowerBuilder
  3. # 1

Thanks Chris,

That did the trick.

I appreciate your help.

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Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Monday, 14 January 2019 21:40 PM UTC
  2. PowerBuilder
  3. # 2

Hi Jeff;

   The 3DES key must be 192 bits (not bytes). That would be 24 bytes (as per the PB help).

HTH

Regards ... Chris

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Jeff Gilpin
Jeff Gilpin Accepted Answer Pending Moderation
  1. Monday, 14 January 2019 21:33 PM UTC
  2. PowerBuilder
  3. # 3

Here is an example of my TDES sample that is failing,

Blob lb_data
Blob lb_key
Blob lb_encrypt
// ls_key is 128 characters in length
String ls_key = 'iHZ/QB6EZvNPAzTUnkVqVFszCtDgDiqDjJvuXFM6o6w=iHZ/QB6EZvNPAzTUnkVqVFszCtDgDiqDjJvuXFM6o6w=iHZ/QB6EZvNPAzTUnkVqVFszCtDgDiqDjJvuXFM6'
String ls_data = 'The rain in Spain falls mainly on the plain'

lb_data = Blob(ls_data, EncodingANSI!)
lb_key = Blob(ls_key, EncodingANSI!)

CrypterObject lnv_CrypterObject
lnv_CrypterObject = Create CrypterObject

messagebox('len b', string(len(lb_key)))

lb_encrypt = lnv_CrypterObject.SymmetricEncrypt(TDES!, lb_data, lb_key)

messagebox('Triple Des', string(lb_encrypt, EncodingANSI!))

 

Error Raised

 

 

 

 

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