**Exhibit      31.2**

**Rule      13a - 14(a) / 15a - 14(a)Certification of Chief Financial      Officer**

 

I, Donald T. Locke,      certify      that:

1.                  I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June      30, 2005, of Summus, Inc.  (“Summus”);

2.                  Based on my knowledge, this report does not contain any untrue statement of      a      material fact or omit to state a material fact necessary to make the statements      made, in light of the circumstances under which such statements were made,      not      misleading with respect to the period covered by this report;

3.                  Based on my knowledge, the financial statements, and other financial information      included in this report, fairly present, in all material respects, the financial      condition, results of operations and cash flows of Summus as of, and for, the      periods presented in this report.

4.                  Summus’s other certifying officers and I are responsible for establishing and      maintaining disclosure controls and procedures (as defined in the Exchange      Act      Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting      (as      defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for Summus and      have:

(a)                     Designed such disclosure controls and procedures, or caused such disclosure      controls and procedures to be designed under our supervision, to ensure that      material information relating to Summus, including its consolidated      subsidiaries, is made known to us by others within those entities, particularly      during the period in which this report is being prepared;

(b)                    Designed such internal control over financial reporting, or caused such internal      control over financial reporting to be designed under our supervision, to      provide reasonable assurance regarding the reliability of financial reporting      and the preparation of financial statements for external purposes in accordance      with generally accepted accounting principles.

(c)                     Evaluated the effectiveness of Summus’ disclosure control’s and procedures and      presented in this report our conclusions about the effectiveness of the      disclosure controls and procedures, as of the end of the period covered by      this      report based on such evaluation; and

(d)                     Disclosed in this report any change in Summus’ internal control over financial      reporting that occurred during Summus’ most recent fiscal quarter that has      materially affected, or is reasonably likely to materially affect, Summus’      internal control over financial reporting; and

5.                  Summus’ other certifying officers and I have disclosed, based on our most recent      evaluation of internal control over financial reporting, to Summus’ auditors and      the audit committee of Summus’ board of directors:

(a)                     All significant deficiencies and material weaknesses in the design or operation      of internal control over financial reporting which are reasonably likely to      adversely affect Summus’ ability to record, process, summarize and report      financial information; and

(b)                     Any fraud, whether or not material, that involves management or other employees      who have a significant role in Summus’ internal control over financial      reporting.            

 

Date:   August      12, 2005

               /s/ Donald T.      Locke                                           Donald T. LockeChief Financial Officer