Move ecp_restartable definitions out of the MBEDTLS_ECP_ALT guards
As there are some definitions that are defined regardless of whether MBEDTLS_ECP_RESTARTABLE is defined or not, these definitions need to be moved outside the MBEDTLS_ECP_ALT guards. This is a simple move as MBEDTLS_ECP_ALT and MBEDTLS_ECP_RESTARTABLE are mutually exclusive options.
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Darryl Green
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fb1972db23
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a7064c3b8c
@ -189,6 +189,68 @@ typedef struct mbedtls_ecp_group
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}
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mbedtls_ecp_group;
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/**
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* \name SECTION: Module settings
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*
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* The configuration options you can set for this module are in this section.
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* Either change them in config.h, or define them using the compiler command line.
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* \{
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*/
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#if !defined(MBEDTLS_ECP_MAX_BITS)
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/**
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* The maximum size of the groups, that is, of \c N and \c P.
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*/
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#define MBEDTLS_ECP_MAX_BITS 521 /**< The maximum size of groups, in bits. */
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#endif
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#define MBEDTLS_ECP_MAX_BYTES ( ( MBEDTLS_ECP_MAX_BITS + 7 ) / 8 )
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#define MBEDTLS_ECP_MAX_PT_LEN ( 2 * MBEDTLS_ECP_MAX_BYTES + 1 )
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#if !defined(MBEDTLS_ECP_WINDOW_SIZE)
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/*
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* Maximum "window" size used for point multiplication.
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* Default: 6.
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* Minimum value: 2. Maximum value: 7.
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*
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* Result is an array of at most ( 1 << ( MBEDTLS_ECP_WINDOW_SIZE - 1 ) )
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* points used for point multiplication. This value is directly tied to EC
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* peak memory usage, so decreasing it by one should roughly cut memory usage
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* by two (if large curves are in use).
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*
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* Reduction in size may reduce speed, but larger curves are impacted first.
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* Sample performances (in ECDHE handshakes/s, with FIXED_POINT_OPTIM = 1):
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* w-size: 6 5 4 3 2
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* 521 145 141 135 120 97
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* 384 214 209 198 177 146
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* 256 320 320 303 262 226
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* 224 475 475 453 398 342
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* 192 640 640 633 587 476
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*/
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#define MBEDTLS_ECP_WINDOW_SIZE 6 /**< The maximum window size used. */
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#endif /* MBEDTLS_ECP_WINDOW_SIZE */
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#if !defined(MBEDTLS_ECP_FIXED_POINT_OPTIM)
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/*
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* Trade memory for speed on fixed-point multiplication.
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*
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* This speeds up repeated multiplication of the generator (that is, the
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* multiplication in ECDSA signatures, and half of the multiplications in
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* ECDSA verification and ECDHE) by a factor roughly 3 to 4.
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*
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* The cost is increasing EC peak memory usage by a factor roughly 2.
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*
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* Change this value to 0 to reduce peak memory usage.
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*/
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#define MBEDTLS_ECP_FIXED_POINT_OPTIM 1 /**< Enable fixed-point speed-up. */
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#endif /* MBEDTLS_ECP_FIXED_POINT_OPTIM */
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/* \} name SECTION: Module settings */
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#else /* MBEDTLS_ECP_ALT */
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#include "ecp_alt.h"
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#endif /* MBEDTLS_ECP_ALT */
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#if defined(MBEDTLS_ECP_RESTARTABLE)
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/**
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@ -253,68 +315,6 @@ typedef void mbedtls_ecp_restart_ctx;
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#endif /* MBEDTLS_ECP_RESTARTABLE */
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/**
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* \name SECTION: Module settings
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*
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* The configuration options you can set for this module are in this section.
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* Either change them in config.h, or define them using the compiler command line.
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* \{
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*/
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#if !defined(MBEDTLS_ECP_MAX_BITS)
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/**
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* The maximum size of the groups, that is, of \c N and \c P.
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*/
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#define MBEDTLS_ECP_MAX_BITS 521 /**< The maximum size of groups, in bits. */
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#endif
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#define MBEDTLS_ECP_MAX_BYTES ( ( MBEDTLS_ECP_MAX_BITS + 7 ) / 8 )
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#define MBEDTLS_ECP_MAX_PT_LEN ( 2 * MBEDTLS_ECP_MAX_BYTES + 1 )
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#if !defined(MBEDTLS_ECP_WINDOW_SIZE)
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/*
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* Maximum "window" size used for point multiplication.
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* Default: 6.
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* Minimum value: 2. Maximum value: 7.
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*
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* Result is an array of at most ( 1 << ( MBEDTLS_ECP_WINDOW_SIZE - 1 ) )
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* points used for point multiplication. This value is directly tied to EC
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* peak memory usage, so decreasing it by one should roughly cut memory usage
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* by two (if large curves are in use).
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*
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* Reduction in size may reduce speed, but larger curves are impacted first.
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* Sample performances (in ECDHE handshakes/s, with FIXED_POINT_OPTIM = 1):
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* w-size: 6 5 4 3 2
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* 521 145 141 135 120 97
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* 384 214 209 198 177 146
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* 256 320 320 303 262 226
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* 224 475 475 453 398 342
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* 192 640 640 633 587 476
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*/
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#define MBEDTLS_ECP_WINDOW_SIZE 6 /**< The maximum window size used. */
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#endif /* MBEDTLS_ECP_WINDOW_SIZE */
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#if !defined(MBEDTLS_ECP_FIXED_POINT_OPTIM)
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/*
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* Trade memory for speed on fixed-point multiplication.
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*
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* This speeds up repeated multiplication of the generator (that is, the
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* multiplication in ECDSA signatures, and half of the multiplications in
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* ECDSA verification and ECDHE) by a factor roughly 3 to 4.
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*
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* The cost is increasing EC peak memory usage by a factor roughly 2.
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*
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* Change this value to 0 to reduce peak memory usage.
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*/
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#define MBEDTLS_ECP_FIXED_POINT_OPTIM 1 /**< Enable fixed-point speed-up. */
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#endif /* MBEDTLS_ECP_FIXED_POINT_OPTIM */
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/* \} name SECTION: Module settings */
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#else /* MBEDTLS_ECP_ALT */
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#include "ecp_alt.h"
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#endif /* MBEDTLS_ECP_ALT */
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/**
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* \brief The ECP key-pair structure.
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*
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