HARRISBURG — Pennsylvania’s attorney general said today that criminal charges threatening to end her career are part of a “grand plan” to conceal pornographic and racially insensitive e-mails that state prosecutors and judges circulated among themselves.

“I am innocent of any wrongdoing,” Kathleen Kane said in her first public comments on the case. “I neither conspired with anyone nor did I ask or direct anyone to do anything improper or unlawful.”

A suburban Philadelphia district attorney charged Kane last week with leaking grand jury information to a newspaper reporter to embarrass a former prosecutor she believed made her look bad, and then lying about her actions under oath.

Kane, 49, described the leak investigation and criminal charges as a “stealth political weapon” to oust her from office and block her from challenging a judge’s order that she said bars the release of a collection of undisclosed pornographic, racially and religiously offensive e-mails sent on state computers.

Kane said the campaign to discredit her began immediately after her office uncovered pornographic and explicit videos, images and jokes in hundreds of e-mails while examining how state prosecutors under her predecessors handled the child sex abuse case against former Penn State assistant football coach Jerry Sandusky.

Kane said the email scandal, which surfaced last summer, resulted in six firings, 23 reprimands and two high-profile resignations: state Supreme Court Justice Seamus McCaffery, who abruptly left office after his involvement was revealed, and a former environmental protection secretary who worked in the attorney general’s office when the e-mails circulated.

She said today that far more people are involved than previously disclosed and called on the judge supervising the leak investigation grand jury, William Carpenter, to authorize the release of the additional e-mails.

She also called on Carpenter to release transcripts, e-mails and other documents related to the protective order she said he signed to prevent the release of those e-mails and to give her immunity from potential charges of witness tampering that could come with their disclosure.

“Today I’m calling for the whole story to come out,” Kane said.

Kane has said she has no plans to quit her post or take a leave.