| Subject | English | Welsh |
| comp., MS | Advanced Encryption Standard | Safon Amgryptio Uwch (A cryptographic algorithm specified by the National Institute of Standards and Technology (NIST) to protect sensitive information) |
| comp., MS | 128-bit encryption | amgryptio 128 did (A high level of encryption that uses a 128-bit key to scramble the contents of a file or data packet to make the data unreadable without the decryption key) |
| comp., MS | 40-bit encryption | amgryptio 40 did (A low level of encryption that uses a 40-bit key to scramble the contents of a file or data packet to make the data unreadable without the decryption key) |
| comp., MS | BitLocker Drive Encryption | Amgryptiad Gyriant BitLocker (A hardware-based security feature that prevents unauthorized access to a computer by providing full-volume encryption and integrity checking of boot components) |
| comp., MS | Data Encryption Standard | Safon Amgryptio Data (An encryption algorithm that uses a 56-bit key and maps a 64-bit input block to a 64-bit output block. The key appears to be a 64-bit key, but one bit in each of the eight bytes is used for odd parity, resulting in 56 bits of usable key) |
| comp., MS | Device Encryption | Amgryptiad dyfais (The out-of-the-box encryption capabilities that are automatically included on PCs running Windows RT.) |
| comp., MS | encryption key | allwedd amgryptio (A bit string that is used in conjunction with an encryption algorithm to encrypt and decrypt data) |
| comp., MS | encryption provider | darparwr amgryptio (Software that provides encryption for sensitive data, such as passwords, in applications) |
| comp., MS | Triple Data Encryption Standard | Safon Amgryptio Data Triphlyg (An encryption algorithm based on the Data Encryption Standard (DES)) |