RE: Specifying RC2 40-bit encryption
"Colestock, Robert" <[email protected]>
| Newsgroups | gmane.ietf.sfl |
|---|---|
| Message-ID | <[email protected]> |
Jonathan: The SMIME V3 specification dictates these lengths. The SFL does not allow you to change the lengths in either the RSA nor the Free3 CTILs in the construction of messages. You can override these settings if you wish in the source code through the sm_rsa.h (SM_RSA_RC2_DEFAULT_KEYBITS in bits) or sm_free3.h (SM_FREE_RC2_KEYLEN in bytes & SM_FREE_3DES_KEYLEN, I do not believe this can be other than 24 bits???) constants, but be aware you will not be able to use the correct lengths to construct messages. No guarantees on operations with this change; I have not tested this logic with such settings, you are on your own. If you notice some discrepancies, I will fix them in the baseline (so long as I can reconcile such changes with the SMIME V3 requirements). Received messages use the length specified in the message, so an RC2 40 bit encrypted message can be decrypted. Bob Colestock VDA. -----Original Message----- From: Jonathan Schulze-Hewett [mailto:[email protected]] Sent: Tuesday, July 11, 2000 10:48 AM To: [email protected] Subject: Specifying RC2 40-bit encryption I cannot tell how to specify the different sizes for RC2 nor DES in the SFL...Anyone care to enlighten me? For example how do I tell it to to 40 bit RC2 encryption? thanks, jonathan ============================================================================ == Jonathan C. Schulze-Hewett Email: [email protected] Software Engineer Information Security Corporation Voice: 708-445-1704 1011 W. Lake Street, Suite 212 Fax: 708-455-9705 Oak Park, IL 60301 WWW: http://www.infoseccorp.com