CVS log for src/usr.bin/ssh/dh.c

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Default branch: MAIN
Current tag: OPENBSD_5_5_BASE

Revision 1.53 / (download) - annotate - [select for diffs], Thu Nov 21 00:45:44 2013 UTC (10 years, 6 months ago) by djm
Branch: MAIN
CVS Tags: OPENBSD_5_6_BASE, OPENBSD_5_6, OPENBSD_5_5_BASE, OPENBSD_5_5
Changes since 1.52: +12 -26 lines
Diff to previous 1.52 (colored)

Add a new protocol 2 transport cipher "chacha20-poly1305@openssh.com"
that combines Daniel Bernstein's ChaCha20 stream cipher and Poly1305 MAC
to build an authenticated encryption mode.

Inspired by and similar to Adam Langley's proposal for TLS:
http://tools.ietf.org/html/draft-agl-tls-chacha20poly1305-03
but differs in layout used for the MAC calculation and the use of a
second ChaCha20 instance to separately encrypt packet lengths.
Details are in the PROTOCOL.chacha20poly1305 file.

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