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updated Crypto.md and added information to Building.md

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Logan007 2020-09-06 15:13:08 +05:45
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doc/Building.md
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@ -111,4 +111,16 @@ Pearson Hashing: AES-NI
The compilations flags could easily be combined:
`./configure CFLAGS="-O3 -march=native"`.
`./configure CFLAGS="-O3 -march=native"`.
## OpenSSL Support
Some ciphers' speed can take advantage of OpenSSL support which is disabled by default as the built-in ciphers already prove reasonably fast in most cases. OpenSSL support can be configured using
`./configure --with-openssl`
which then will include OpenSSL 1.0 or 1.1 if found on the system. This can be combined with the hardware support and compiler optimizations such as
`./configure --with-openssl CFLAGS="-O3 -march=native"`
Please do no forget to `make clean` after (re-)configuration and before building using `make`.

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doc/Crypto.md
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@ -24,7 +24,7 @@ The following chart might help to make a quick comparison and decide what cipher
The two block ciphers Twofish and AES are used in CTS mode.
n2n has all four ciphers built-in as basic versions. Some of them optionally compile to faster versions by the means of available hardware support (AES-NI, SSE, AVX – please see the [Building document](./Building.md) for details. Also, AES and ChaCha20 might draw notable acceleration from compiling with openSSL 1.1 support.
n2n has all four ciphers built-in as basic versions. Some of them optionally compile to faster versions by the means of available hardware support (AES-NI, SSE, AVX – please see the [Building document](./Building.md) for details. Depending on your platform, AES and ChaCha20 might also draw notable acceleration from optionally compiling with openSSL 1.1 support.
### Twofish