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Support ECDH key exchange using the 'curve25519' curve.

This is the kex protocol id "curve25519-sha256@libssh.org", so called
because it's over the prime field of order 2^255 - 19.

Arithmetic in this curve is done using the Montgomery representation,
rather than the Weierstrass representation. So 'struct ec_curve' has
grown a discriminant field and a union of subtypes.
This commit is contained in:
Chris Staite
2015-05-09 15:02:52 +01:00
committed by Simon Tatham
parent 7d6bf4a6ca
commit 541abf9258
4 changed files with 934 additions and 258 deletions

1147
sshecc.c

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