Re: [clisp-list] Implementing SHA1 in CLISP

[Sam S. <sd...@gn...>]

> * Zach Beane <knpu@knpu.pbz> [2011-04-05 13:01:04 -0400]:
>
> I'd like to have an implementation of the SHA-1 cryptographic hash
> function in CLISP. Can you suggest any tricks, implementation-specific
> features, etc. that might be used to get good performance? For example,
> LispWorks has an INT32 API that can be used to get good performance for
> 32-bit arithmetic, and SBCL has modular arithmetic that can be exploited
> to inline a lot of work. Is there anything similar for CLISP?

I am afraid not.  CLISP always runs all code with full safety, there are
no optimizations for specific types.

If you are concerned with performance, I suggest interfacing to
<openssl/sha.h> (using ffi or modules) - you will get a trusted
implementation as a bonus.

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