About.com Horses readers have submitted the ages of the oldest horses they know, and it's clear that many horses live beyond the age of 30 with good care. The average age is 28 + 5 years. That means the average life span is 25 to 33.
An annual study of the most commonly used passwords has found that password, 123456 and 12345678 are still the most commonly used passwords-despite years of security experts urging people to change them to more secure versions.
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.