There are two doctrines that deal with confidential client information. The attorney-client privilege and the professional duty of confidentiality deal with confidential client information.
New Jersey law is instructive. Crucial to the attorney-client relationship is the attorney's obligation not to reveal confidential information learned in the course of representation. Thus, Rules of Professional Conduct, RPC 1.6(a) states that '[a] lawyer shall not reveal information relating to representation of a client unless the client consents after consultation, except for disclosures that are impliedly authorized in order to carry out the representation.' Generally, 'the principle of attorney-client confidentiality imposes a sacred trust on the attorney not to disclose the client's confidential communication.' State v. Land, 73 N.J. 24, 30, 372 A.2d 297 (1977).