Appeal No. 2003-0946
Application No. 08/904,137
BACKGROUND
The invention is directed to an integrated circuit (IC) card, and methods for
enhancing security in the addition, or changing, of programs on the card.
Representative claim 75 is reproduced below.1
75. A writing method for an IC card having a microprocessor, a ROM device
which stores a first program which is executed by said microprocessor, a write
control program having a decryption function, and a writable memory, said
writing method comprising:
inputting an encrypted second program, which has been encrypted based
on an encryption key, from an external device;
decrypting said encrypted second program according to said write control
program; and
storing a decrypted second program in said writable memory according to
said write control program, said decrypted second program being executable by
said microprocessor.
The examiner relies on the following reference:
Hirokawa et al. (Hirokawa) 4,827,512 May 2, 1989
Claims 20-38, 51-58, 71-87, 93, and 94 stand rejected under 35 U.S.C. § 102 as
being anticipated by Hirokawa.
We refer to the Examiner’s Answer (Paper No. 40) for a statement of the
examiner’s position and to the Brief (Paper No. 39) and the Reply Brief (Paper No. 42)
for appellants’ position with respect to the claims which stand rejected.
1 We note that the amendment filed August 19, 2002 (Paper No. 38) has not been formally
entered in the file wrapper.
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