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This commit is contained in:
wborgeaud 2022-07-18 16:53:26 +02:00
parent f9ec4e8e7d
commit ea0d081fa8
1 changed files with 14 additions and 14 deletions
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28
evm/src/cpu/kernel/asm/ecrecover.asm
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@ -107,31 +107,31 @@ ecrecover_with_first_point:
// stack: u2, Y, X, retdest
// Compute u2 * GENERATOR and chain the call to `ec_mul` with a call to `ec_add` to compute PUBKEY = (X,Y) + u2 * GENERATOR,
// and a call to `final_hashing` to get the final result `SHA3(PUBKEY)[-20:]`.
PUSH final_hashing
// stack: final_hashing, u2, Y, X, retdest
// and a call to `pubkey_to_addr` to get the final result `SHA3(PUBKEY)[-20:]`.
PUSH pubkey_to_addr
// stack: pubkey_to_addr, u2, Y, X, retdest
SWAP3
// stack: X, u2, Y, final_hashing, retdest
// stack: X, u2, Y, pubkey_to_addr, retdest
PUSH ec_add_valid_points_secp
// stack: ec_add_valid_points_secp, X, u2, Y, final_hashing, retdest
// stack: ec_add_valid_points_secp, X, u2, Y, pubkey_to_addr, retdest
SWAP1
// stack: X, ec_add_valid_points_secp, u2, Y, final_hashing, retdest
// stack: X, ec_add_valid_points_secp, u2, Y, pubkey_to_addr, retdest
PUSH 0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 // x-coordinate of generator
// stack: Gx, X, ec_add_valid_points_secp, u2, Y, final_hashing, retdest
// stack: Gx, X, ec_add_valid_points_secp, u2, Y, pubkey_to_addr, retdest
SWAP1
// stack: X, Gx, ec_add_valid_points_secp, u2, Y, final_hashing, retdest
// stack: X, Gx, ec_add_valid_points_secp, u2, Y, pubkey_to_addr, retdest
PUSH 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 // y-coordinate of generator
// stack: Gy, X, Gx, ec_add_valid_points_secp, u2, Y, final_hashing, retdest
// stack: Gy, X, Gx, ec_add_valid_points_secp, u2, Y, pubkey_to_addr, retdest
SWAP1
// stack: X, Gy, Gx, ec_add_valid_points_secp, u2, Y, final_hashing, retdest
// stack: X, Gy, Gx, ec_add_valid_points_secp, u2, Y, pubkey_to_addr, retdest
SWAP4
// stack: u2, Gy, Gx, ec_add_valid_points_secp, X, Y, final_hashing, retdest
// stack: u2, Gy, Gx, ec_add_valid_points_secp, X, Y, pubkey_to_addr, retdest
SWAP2
// stack: Gx, Gy, u2, ec_add_valid_points_secp, X, Y, final_hashing, retdest
// stack: Gx, Gy, u2, ec_add_valid_points_secp, X, Y, pubkey_to_addr, retdest
%jump(ec_mul_valid_point_secp)
// TODO
final_hashing:
// Take a public key (PKx, PKy) and return the associated address SHA3(PKx || PKy)[-20:].
pubkey_to_addr:
JUMPDEST
// stack: PKx, PKy, retdest
PUSH 0