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# DeepSeek PoW 纯算实现
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替代 `internal/deepseek/assets/sha3_wasm_bg.*.wasm` + wazero 运行时。
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当前服务端 PoW 已走纯 Go 实现:`internal/deepseek/pow.go` 负责从上游 challenge map 中取字段,调用 `ds2api/pow` 求解 nonce,并组装 `x-ds-pow-response` header。
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## 算法
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@@ -17,48 +17,14 @@ hash = DeepSeekHashV1(input) → 32 bytes
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header = base64(json({algorithm, challenge, salt, answer, signature, target_path}))
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```
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## 性能 (Apple M4, Go 1.25)
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## 主要入口
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```
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BenchmarkHash 187.5 ns/op 0 alloc → 5.33M hash/s
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BenchmarkSolve 13.4 ms/op 2 alloc → 75 道/秒/核 (difficulty=144000)
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```
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对比 wazero 调 WASM: hash 快 **5×**, solve 快 **2.8×**。
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- `pow/deepseek_hash.go`:DeepSeekHashV1 / Keccak-f[1600] rounds 1..23。
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- `pow/deepseek_pow.go`:`SolvePow`、`BuildPowHeader`、`SolveAndBuildHeader`。
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- `internal/deepseek/pow.go`:服务侧适配层,校验 `algorithm == DeepSeekHashV1` 并调用 `pow.SolvePow`。
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## 测试
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```bash
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cd pow && go test -v ./... && go test -bench=. -benchmem
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```
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## 替换 WASM
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替换 `internal/deepseek/pow.go` 中 `PowSolver.Compute`:
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```go
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// 原: 调 wasm_solve(retptr, chPtr, chLen, prefixPtr, prefixLen, difficulty)
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// 新:
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import "ds2api/pow"
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func (c *Client) GetPow(ctx context.Context, a *auth.RequestAuth, ...) (string, error) {
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// ... 省略 token/retry 逻辑,只改 compute 部分 ...
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challenge, _ := bizData["challenge"].(map[string]any)
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ch := &pow.Challenge{
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Algorithm: challenge["algorithm"].(string),
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Challenge: challenge["challenge"].(string),
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Salt: challenge["salt"].(string),
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ExpireAt: int64(challenge["expire_at"].(float64)),
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Difficulty: int64(challenge["difficulty"].(float64)),
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Signature: challenge["signature"].(string),
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TargetPath: challenge["target_path"].(string),
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}
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return pow.SolveAndBuildHeader(ch)
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}
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```
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可删除:
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- `internal/deepseek/assets/sha3_wasm_bg.*.wasm`
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- `internal/deepseek/embedded_pow.go`
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- `internal/deepseek/pow.go` 中 `PowSolver` 结构体、wazero 相关池化代码
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- `go.mod` 中 `github.com/tetratelabs/wazero` 依赖
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