General parameters (for all curve models): p 2^{255}-19 (=0x7fffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffed) h 8 n 723700557733226221397318656304299424085711635937990760600195093828 5454250989 (=2^{252} + 0x14def9de a2f79cd6 5812631a 5cf5d3ed) Montgomery curve-specific parameters (for Curve25519): A 486662 B 1 Gu 9 (=0x9) Gv 147816194475895447910205935684099868872646061346164752889648818377 55586237401 (=0x20ae19a1 b8a086b4 e01edd2c 7748d14c 923d4d7e 6d7c61b2 29e9c5a2 7eced3d9) Twisted Edwards curve-specific parameters (for Edwards25519): a -1 (-0x01) d -121665/121666 (=3709570593466943934313808350875456518954211387984321901638878553 3085940283555) (=0x52036cee 2b6ffe73 8cc74079 7779e898 00700a4d 4141d8ab 75eb4dca 135978a3) Gx 151122213495354007725011514095885315114540126930418572060461132839 49847762202 (=0x216936d3 cd6e53fe c0a4e231 fdd6dc5c 692cc760 9525a7b2 c9562d60 8f25d51a) Gy 4/5 (=4631683569492647816942839400347516314130799386625622561578303360 3165251855960) (=0x66666666 66666666 66666666 66666666 66666666 66666666 66666666 66666658) Weierstrass curve-specific parameters (for Wei25519): a 192986815395526992372618308347813179755449974442734273399095973345 73241639236 (=0x2aaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaa98 4914a144) b 557517466698189089076452890782571408182411037279010123152944008379 56729358436 (=0x7b425ed0 97b425ed 097b425e d097b425 ed097b42 5ed097b4 260b5e9c 7710c864) GX 192986815395526992372618308347813179755449974442734273399095973346 52188435546 (=0x2aaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaa aaad245a) GY 147816194475895447910205935684099868872646061346164752889648818377 55586237401 (=0x20ae19a1 b8a086b4 e01edd2c 7748d14c 923d4d7e 6d7c61b2 29e9c5a2 7eced3d9) Authors' Addresses Pascal Thubert (editor) Cisco Systems, Inc Building D 45 Allee des Ormes - BP1200 06254 MOUGINS - Sophia Antipolis France Phone: +33 497 23 26 34 Email: pthubert@cisco.com Behcet Sarikaya Email: sarikaya@ieee.org Mohit Sethi Ericsson FI-02420 Jorvas Finland Email: mohit@piuha.net Rene Struik Struik Security Consultancy Email: rstruik.ext@gmail.com Thubert, et al. Expires 1 November 2020 [Page 32]