Famed former city prosecutor Linda Fairstein had unleashed a “litany of salacious statements” about exonerated sex-torture suspect Oliver Jovanovic to spur her career as a crime novelist, he alleges.

Jovanovic is suing the city for $20 million over his sensational “cybersex” arrest and trial in the late ’90s and says in court papers that Fairstein — then head of the Manhattan district attorney’s sex-crimes unit — is a “self-described ‘shameless’ publicity seeker” who had used her prosecution of “Preppy Killer” Robert Chambers to promote her writing.

Jovanovic alleges that in the run-up to the 1998 trial, she improperly leaked information about his case that “demonized Jovanovic and destroyed his right to a fair trial.” He spent about 20 months in prison on charges that he sexually tortured a Barnard College student. The conviction was overturned in 1999.

Fairstein, who was in Madison, Conn., promoting her novel “Hell Gate,” couldn’t be reached.