Tune coverage of ecc-heap.sh
Include more curves. For example, the Brainpool curves don't have dedicated "mod p" reduction routines, so they have a much larger number of allocs (comparable to the NIST curves with `MBEDTLS_ECP_NIST_OPTIM` disabled). On the other hand, to keep the script's running time reasonable, remove a few things: - curves smaller than 256 bits (out of favour these days) - window sizes larger than the default: 6 was particularly useless as it's never selected by the current code; 5 can only be selected with curves >= 384 and is unlikely to be used in practice as it increases heap usage quite a lot for very little performance gain. Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
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@ -61,12 +61,19 @@ cat << EOF >$CONFIG_H
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#define MBEDTLS_SHA224_C // SHA256 requires this for now
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#define MBEDTLS_ECDH_C
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#define MBEDTLS_ECP_DP_SECP192R1_ENABLED
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#define MBEDTLS_ECP_DP_SECP224R1_ENABLED
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// NIST curves >= 256 bits
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#define MBEDTLS_ECP_DP_SECP256R1_ENABLED
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#define MBEDTLS_ECP_DP_SECP384R1_ENABLED
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#define MBEDTLS_ECP_DP_SECP521R1_ENABLED
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// SECP "koblitz-like" curve >= 256 bits
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#define MBEDTLS_ECP_DP_SECP256K1_ENABLED
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// Brainpool curves (no specialised "mod p" routine)
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#define MBEDTLS_ECP_DP_BP256R1_ENABLED
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#define MBEDTLS_ECP_DP_BP384R1_ENABLED
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#define MBEDTLS_ECP_DP_BP512R1_ENABLED
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// Montgomery curves
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#define MBEDTLS_ECP_DP_CURVE25519_ENABLED
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#define MBEDTLS_ECP_DP_CURVE448_ENABLED
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#define MBEDTLS_HAVE_ASM // just make things a bit faster
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#define MBEDTLS_ECP_NIST_OPTIM // faster and less allocations
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@ -76,7 +83,7 @@ cat << EOF >$CONFIG_H
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EOF
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for F in 0 1; do
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for W in 2 3 4 5 6; do
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for W in 2 3 4; do
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scripts/config.py set MBEDTLS_ECP_WINDOW_SIZE $W
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scripts/config.py set MBEDTLS_ECP_FIXED_POINT_OPTIM $F
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make benchmark >/dev/null 2>&1
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