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Expand documentation with notes and warnings

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Manuel Pégourié-Gonnard 2017-03-20 14:59:54 +01:00
parent e685449004
commit e58f65a04b
1 changed files with 16 additions and 1 deletions
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17
include/mbedtls/ecp.h
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@ -275,7 +275,7 @@ mbedtls_ecp_keypair;
* - about 3300 basic operations for P-256
* - about 9400 basic operations for P-384
*
* \warning Very low values are not always respected: sometimes
* \note Very low values are not always respected: sometimes
* functions need to block for a minimum number of
* operations, and will do so even if max_ops is set to a
* lower value. That minimum depends on the curve size, and
@ -284,6 +284,21 @@ mbedtls_ecp_keypair;
* parameter set to 4, the minimum amount of blocking is:
* - around 165 basic operations for P-256
* - around 330 basic operations for P-384
*
* \note This setting is currently ignored by Curve25519
*
* \warning The ECJPAKE module is currently not compatible with this
* feature. \c max_ops must always be 0 while using ECJPAKE.
*
* \warning NOT thread-safe: when \c max_ops is not zero, sharing a
* \c mbedtls_ecp_group structure, or a
* \c mbedtls_pk_context structure wrapping an ECC key,
* between concurrent threads of execution is NOT supported.
* For (D)TLS, that means it's not safe to concurrently run
* two handshakes that use the same private EC key for
* authenticating ourselves; it is however safe to maintain
* multiple simultaneous connections as long as the
* handshakes are not concurrent or don't use the same key.
*/
void mbedtls_ecp_set_max_ops( unsigned max_ops );
#endif /* MBEDTLS_ECP_EARLY_RETURN */