Cryptographic Material definition in Computer Security terms:
Definition(s): All material, including documents, devices, or equipment that contains cryptographic information and is essential to the encryption, decryption, or authentication of telecommunications.
Source(s): CNSSI 4009-2015 (NSA/CSS Manual Number 3-16 (COMSEC), NSA/CSS Manual Number 3-16 (COMSEC))
The marking or designator identifying unencrypted COMSEC keying material used to secure or authenticate telecommunications carrying classified or sensitive U.S. Government or U.S. Government-derived information. This includes non-split keying material used to encrypt/decrypt COMSEC critical software and software based algorithms.
Source(s): CNSSI 4009-2015
reference: CSRC Glossary