ERC-1967 Proxy Upgradeability KECCAK-256 VERIFIED
WEB3 逆向安全工程 // ERC-1967 标准
0x8f283970

Solidity Interface & Canonical Declaration

function changeAdmin(address newAdmin) external

将代理合约的管理权限移交给新的管理员地址。

理论基础执行 Gas: 25,000 ~ 45,000 gas
返回值类型: void

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) changeAdmin(address) 的 4 字节函数选择器
0x04 ~ 0x23 (32B) address newAdmin 新的代理管理员地址

Keccak-256 密码学哈希推导链

标准 ASCII 签名字符串: changeAdmin(address)
完整 256 位 Keccak 哈希: 0x8f283970d77a4ed91db7de292ab9ce3bd6bda15b0efff7371d7a50905ca104f6
截取前 4 字节 (Big-Endian): 0x8f283970

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 0x8f283970 and branch [0x0006] DUP1 [0x0007] PUSH4 0x8f283970 [0x000c] EQ [0x000d] PUSH2 0x0050 [0x0010] JUMPI // Jump to implementation if matched