1 files changed, 0 insertions, 111 deletions
diff --git a/std/hash/_sha3/sponge.ts b/std/hash/_sha3/sponge.ts
deleted file mode 100644
index 9ad67ca07..000000000
--- a/std/hash/_sha3/sponge.ts
+++ /dev/null
@@ -1,111 +0,0 @@
-// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-
-import * as hex from "../../encoding/hex.ts";
-
-type SpongePermutator = (data: Uint8Array) => void;
-
-/** Sponge construction option */
-export interface SpongeOption {
-  bitsize: number;
-  rate: number;
-  dsbyte: number;
-  permutator: SpongePermutator;
-}
-
-export type Message = string | ArrayBuffer;
-
-const STATE_SIZE = 200;
-const TYPE_ERROR_MSG = "sha3: `data` is invalid type";
-
-/** Sponge construction */
-export class Sponge {
-  #option: SpongeOption;
-  #state: Uint8Array;
-  #rp: number;
-  #absorbing: boolean;
-
-  constructor(option: SpongeOption) {
-    this.#option = option;
-    this.#state = new Uint8Array(STATE_SIZE);
-    this.#rp = 0;
-    this.#absorbing = true;
-  }
-
-  /** Applies padding to internal state */
-  private pad(): void {
-    this.#state[this.#rp] ^= this.#option.dsbyte;
-    this.#state[this.#option.rate - 1] ^= 0x80;
-  }
-
-  /** Squeezes internal state */
-  protected squeeze(length: number): Uint8Array {
-    if (length < 0) {
-      throw new Error("sha3: length cannot be negative");
-    }
-
-    this.pad();
-
-    const hash = new Uint8Array(length);
-    let pos = 0;
-    while (length > 0) {
-      const r = length > this.#option.rate ? this.#option.rate : length;
-      this.#option.permutator(this.#state);
-      hash.set(this.#state.slice(0, r), pos);
-      length -= r;
-      pos += r;
-    }
-
-    this.#absorbing = false;
-    return hash;
-  }
-
-  /** Updates internal state by absorbing */
-  update(data: Message): this {
-    if (!this.#absorbing) {
-      throw new Error("sha3: cannot update already finalized hash");
-    }
-
-    let msg: Uint8Array;
-
-    if (typeof data === "string") {
-      msg = new TextEncoder().encode(data as string);
-    } else if (typeof data === "object") {
-      if (data instanceof ArrayBuffer || ArrayBuffer.isView(data)) {
-        msg = new Uint8Array(data);
-      } else {
-        throw new Error(TYPE_ERROR_MSG);
-      }
-    } else {
-      throw new Error(TYPE_ERROR_MSG);
-    }
-
-    let rp = this.#rp;
-
-    for (let i = 0; i < msg.length; ++i) {
-      this.#state[rp++] ^= msg[i];
-      if (rp >= this.#option.rate) {
-        this.#option.permutator(this.#state);
-        rp = 0;
-      }
-    }
-
-    this.#rp = rp;
-    return this;
-  }
-
-  /** Returns the hash in ArrayBuffer */
-  digest(): ArrayBuffer {
-    return this.squeeze(this.#option.bitsize >> 3);
-  }
-
-  /** Returns the hash in given format */
-  toString(format: "hex" = "hex"): string {
-    const rawOutput = this.squeeze(this.#option.bitsize >> 3);
-    switch (format) {
-      case "hex":
-        return hex.encodeToString(rawOutput);
-      default:
-        throw new Error("sha3: invalid output format");
-    }
-  }
-}