WASHINGTON — U.S. forces and diplomatic missions overseas braced for the release of the public version of a long-awaited Senate Intelligence Committee report into the CIA’s use of torture after a U.S. intelligence community warning of a “heightened potential” for a “violent response,” U.S. officials said.

The report’s roughly 500-page summary, which the White House said would be unveiled today, excoriates the CIA, concluding that it didn’t gain significant intelligence or the cooperation of detainees by using the harsh interrogation methods, had wrongly subjected some people to the procedures and misled the White House and Congress about the results.

The Democrat-led committee’s conclusions, which were obtained in April by Tribune News Service, are being fiercely disputed by current and former CIA officials, former President George W. Bush and senior officials of his administration. They contend that the program produced valuable information that disrupted terror plots and led to the capture of key al-Qaida operatives.

“We did what we were asked to do, we did what we were assured was legal. And we know our actions were effective,” Jose Rodriguez, the former senior CIA official who oversaw the program, wrote in an op-ed piece published Sunday in The Washington Post.

The committee voted in December 2012 to approve a final draft of a 6,300-page classified version of the report and an executive summary, findings and conclusions for release to the public. But the release was delayed by an uproar over CIA monitoring of the committee staff’s computers and a battle over administration demands to black out information that it contended could reveal the identities of undercover CIA officers and anger foreign governments.

The $40 million report sidesteps an assessment of the responsibility for abuses of Bush, who authorized the program, former Vice President Dick Cheney, a key advocate, and other senior officials.