| Subject | English | Portuguese |
| comp., MS, Braz. | cryptographic key | chave de criptografia (A piece of data that is required to initialize a cryptographic algorithm) |
| comp., MS | cryptographic key | chave criptográfica (A piece of data that is required to initialize a cryptographic algorithm) |
| IT | private cryptographic signature key | chave privada de assinatura criptográfica |