Techniques are disclosed relating to a computer system receiving recordings of meetings between individuals, encrypting the recording, storing the encrypted recording, and determining whether to decrypt the encrypted recording based on decryption information indicative of ones of the individuals have assented to the decryption of the encrypted recording and a cryptographic policy. The computer system may also perform semantic analysis of the audio of the meeting to identify decision statements made at the meeting and factor statements made at the meeting upon which the decision statement is based. The computer system may also store meeting metadata associated with the meeting that is indicative of the decision statement and factor statements. Subsequent to the meeting, the computer system may reevaluate one or more factor statements, determine encrypted recordings corresponding to the reevaluated factor statements, and output an identification of the decision statements associated with the determined encrypted recordings.