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| author | Martin Willi <martin@strongswan.org> | 2015-06-01 13:43:56 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-06-04 15:04:49 +0800 |
| commit | c08d0e647305c3f8f640010a56c9e4bafb9488d3 (patch) | |
| tree | f6d862fda8608a41677ec721f5dc280a1899a320 /COPYING | |
| parent | fb43f69401fef8ed2f72d7ea4a25910a0f2138bc (diff) | |
| download | op-kernel-dev-c08d0e647305c3f8f640010a56c9e4bafb9488d3.zip op-kernel-dev-c08d0e647305c3f8f640010a56c9e4bafb9488d3.tar.gz | |
crypto: chacha20 - Add a generic ChaCha20 stream cipher implementation
ChaCha20 is a high speed 256-bit key size stream cipher algorithm designed by
Daniel J. Bernstein. It is further specified in RFC7539 for use in IETF
protocols as a building block for the ChaCha20-Poly1305 AEAD.
This is a portable C implementation without any architecture specific
optimizations. It uses a 16-byte IV, which includes the 12-byte ChaCha20 nonce
prepended by the initial block counter. Some algorithms require an explicit
counter value, for example the mentioned AEAD construction.
Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'COPYING')
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