ERC-4626 Yield Vault KECCAK-256 VERIFIED
WEB3 逆向安全工程 // ERC-4626 标准
0xb460af94

Solidity Interface & Canonical Declaration

function withdraw(uint256 assets, address receiver, address owner) external returns (uint256)

销毁金库所有者的相应份额,并将指定数量的底层资产提取并发送给接收者。

理论基础执行 Gas: 65,000 ~ 135,000 gas
返回值类型: uint256

Calldata 调用数据 ABI 编码布局账本

Calldata Offset Type Parameter Name Semantic Role
0x00 ~ 0x03 (4B) bytes4 Method ID (msg.sig) withdraw(uint256,address,address) 的 4 字节函数选择器
0x04 ~ 0x23 (32B) uint256 assets 待提取的底层资产数量
0x24 ~ 0x43 (32B) address receiver 接收底层资产的地址
0x44 ~ 0x63 (32B) address owner 份额持有者地址

Keccak-256 密码学哈希推导链

标准 ASCII 签名字符串: withdraw(uint256,address,address)
完整 256 位 Keccak 哈希: 0xb460af94a08911df9ce375fb2a190ee15b3a9dfdda8ede7986fb72478f042661
截取前 4 字节 (Big-Endian): 0xb460af94

EVM 运行时调度器汇编代码特征 (Dispatcher Opcodes)

// 1. Load the first 32 bytes of transaction calldata [0x0000] PUSH1 0x00 [0x0002] CALLDATALOAD // 2. Right-shift by 224 bits (0xe0) to isolate the 4-byte selector [0x0003] PUSH1 0xe0 [0x0005] SHR // 3. Match against target selector 0xb460af94 and branch [0x0006] DUP1 [0x0007] PUSH4 0xb460af94 [0x000c] EQ [0x000d] PUSH2 0x0050 [0x0010] JUMPI // Jump to implementation if matched