Mobile Equipment IDentifiers (MEID)
Definition: A Mobile Equipment IDentifier (MEID) is a globally unique number for a physical piece of mobile station equipment. Equipment identifiers are 'burned' into a device, and should be resistant to modification. An ESN type can be distinguished as a pseudo ESN (pESN) based on the first 8 bits ('manufacturer' code) as derived from the MEID using the SHA-1 algorithm to reduce a 56-bit MEID to a 24-bit ESN. The pESN codes are not unique, but will not match any UIMID or true ESN (tESN) because they have a unique manufacturer code of 0x80 (decimal 128). The ESN will migrate to the MEID with assignments anticipated to begin in the 2004 to 2005 timeframe.
EVDV에 적용되어 있슴.
2005 년경 ESN 소진예상
ESN 대체할 56bits ID
11가지 design 요구사항
http://www.tiaonline.org/standards/esn/TIA-MEID_overview_v1_1_web.pdf
http://www.tiaonline.org/standards/esn/TIA-MEIDv1_2.pdf
http://www.tiaonline.org/standards/esn/
3G Mobile Equipment Identifier (MEID) Stage 1 (227KB)
http://3gpp2.org/Public_html/specs/S.R0048-A_v2.0_040426.pdf
MEID 에서 Pseudo ESN 으로 뽑아내는 방법은 IS-2000.5 Release D 에 의하면
56bits -> 32 bits 중 상위 8bit 은 0x80 나머지 24bit 은 SHA-1 의 LSB
SHA 알고리즘 기술한 FIPS 180-1 스펙은 180-2 로 바뀌었다.
Secure Hash Standard (SHS) -- 2002 August http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
180-2