Because The candidates of ISO standard ware presented by successively, the participants from companys gathered considerably on the 1st day. The presentations of Secret Key Cryptography ware NEC(CIPHERUNICORN-A),NTT&MITSUBISHI(Camellia),TOSHIBA(Hierocrypt)and HITACHI(MULTI-S01). The candidates of Public Key Cryptography ISO standard are EPOC-1,EPOC-2,PSEC-1 and PSEC-2(NTT).

EPOC are the cryptsystems based on factoring. PSEC are the cryptsystems based on the discrete logarithm problem for elliptic curve. Thought two cryptsystems differ a little in precondition of secure, each of them are proved strongly secure.