WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms joint pain, muscle stiffness (rigidity), muscle weakness and night sweats including Lack of exercise, Exercise or physical activity, and Hypocalcemia.endinitis symptoms include muscle and tendon pain or stiffness close to a joint, and pain with movement.
Symmetric Encryption. Symmetric encryption (or pre-shared key encryption) uses a single key to both encrypt and decrypt data. Both the sender and the receiver need the same key to communicate. Symmetric key sizes are typically 128 or 256 bitsâthe larger the key size, the harder the key is to crack.
II. Symmetric algorithms: As the name suggests, symmetric key algorithms use the same key to encrypt as well as decrypt message. Some of the commonly used symmetric key algorithms are: DES (Data Encryption Standard): DES uses a 56-bit key on each 64-bit chunk of data. It is limited in used due to its short key length.