Fuego.Util : UUID

The UUID component is used as a universally unique identifier (UUID), which is a 128-bit value (16 bytes). The UUID component is composed of following unsigned fields:

• time_low: 32-bits (4 bytes). This field is set to a 60-bit timestamp measured in 100-nanosecond units since the date of midnight, October 15, 1582 UTC.
• time_mid: 16-bits (2 bytes). This field is set to a 60-bit timestamp measured in 100-nanosecond units since the date of midnight, October 15, 1582 UTC.
• version: 4-bits -\
• time_hi: 12-bits -/ (2 bytes). This field is set to a 60-bit timestamp measured in 100-nanosecond units since the date of midnight, October 15, 1582 UTC.
• variant: 2-bits -\
• clock_seq: 14-bits -/ (2 bytes). This field is set to a 14-bit random number.
• node: 48-bits (6 bytes)

Note the following when working with the UUID component:

• The variant value is always 2.
• The version must be either 1 (IEEE 802 addres) or 4 (pseudo-random number).
• The node must be set accordingly.