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Add option for even smaller SHA-256

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Manuel Pégourié-Gonnard 2015-05-28 12:54:04 +02:00
parent a7a3a5fe37
commit eb0d8706ce
4 changed files with 43 additions and 7 deletions
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16
include/mbedtls/config.h
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@ -827,6 +827,22 @@
*/
#define MBEDTLS_SELF_TEST
/**
* \def MBEDTLS_SHA256_SMALLER
*
* Enable an implementation of SHA-256 that has lower ROM footprint but also
* lower performance.
*
* The default implementation is meant to be a reasonnable compromise between
* performance and size. This version optimizes more aggressively for size at
* the expense of performance. Eg on Cortex-M4 it reduces the size of
* mbedtls_sha256_process() from ~2KB to ~0.5KB for a performance hit of about
* 30%.
*
* Uncomment to enable the smaller implementation of SHA256.
*/
//#define MBEDTLS_SHA256_SMALLER
/**
* \def MBEDTLS_SSL_AEAD_RANDOM_IV
*