Optimizing ECDSA with Shamir's trick and windowing #3
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Optimized and standard version may be compared using --print-info over test_bench_ecdsa.cairo and test_bench_opti.cairo.
The obtained speed up is around 46%:
ECDSA optimized over sec256r1
Number of steps: 222828 (originally, 222828)
Used memory cells: 231500
ECDSA standard implementation over sec256r1
Number of steps: 388286 (originally, 388286)
Used memory cells: 402221
Optimized version for starkcurve and secp256k1 are available here:[
https://github.com/rdubois-crypto/MyCairoPlayground/tree/main/Cairo
(PR138 on Starkware repo).](starkware-libs/cairo-lang#138)