GlobalSCAPE Knowledge Base

AS2 Signature and Encryption Algorithms for Inbound Transactions

Karla Marsh


  • EFT v7.4.11 and later

EFT v8.0 and later store Advanced Properties in a JSON file. When you upgrade from EFT v7.4.x to EFT v8, the non-default settings that you have defined in the registry will be added to the Advanced Properties file during upgrade. (Default settings become part of the EFT configuration files.) For a more on how to use advanced properties, and a spreadsheet of the advanced properties, please refer to the "Advanced Properties" topic in the help for your version of EFT.


EFT v7.4.11 was updated to use the /n 2016 EDI Integrator component, which includes the option to specify allowed signature/ encryption algorithms for inbound transactions. The MDN (Message Disposition Notification) is signed using the specified algorithm. Which algorithms to use can be configured in the registry, as described below.

Available signature algorithms for inbound transactions include:

  • 0 As Requested
  • 1 As Requested Or SHA1
  • 2 SHA1
  • 3 MD5
  • 4 None
  • 5 SHA-256
  • 6 SHA-384
  • 7 SHA-512
  • 8 SHA-224
  • 9 As Requested Or SHA-256 (default)

Available encryption algorithms include:

  • 3DES
  • DES
  • AESCBC128
  • AESCBC192
  • AESCBC256

All available algorithms except "DES" are selected by default.

To specify one or more algorithms

In EFT v8 and later:

Add the name:value pair to the AdvancedProperties.JSON file in EFT's \ProgramData\ directory as described in the "Advanced Properties" topic in the online help for your version of EFT.

"AS2EncryptionAlgorithm": AESCBC256,
"AS2SignatureAlgorightm": SHA-256

In versions prior to v8.0:

Create the following registry settings:

HKEY_LOCAL_MACHINE\Software\WOW6432Node\GlobalSCAPE Inc.\EFT Server 7.4\


Value names:

  • AS2EncryptionAlgorithm
  • AS2SignatureAlgorithm

Restart Required: yes

Backup/Restore: yes

In the COM API, these options are configurable via the COM API properties "Signature Algorithm" and "Encryption Algorithm".

Last Modified: 3 Months Ago
Last Modified By: kmarsh
Type: INFO
Rated 2 stars based on 10 votes.
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