/** @preserve
(c) 2012 by Cédric Mesnil. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:

    - Redistributions of source code must retain the above copyright notice, this list of
    conditions and the following disclaimer.
    - Redistributions in binary form must reproduce the above copyright notice, this list
    of conditions and the following disclaimer in the documentation and/or other materials
    provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import {
  WordArray,
  Hasher,
} from './core';

// Constants table
const _zl = WordArray.create([
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13]);
const _zr = WordArray.create([
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11]);
const _sl = WordArray.create([
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6]);
const _sr = WordArray.create([
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11]);

const _hl = WordArray.create([0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E]);
const _hr = WordArray.create([0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000]);

const f1 = (x, y, z) => (x) ^ (y) ^ (z);

const f2 = (x, y, z) => ((x) & (y)) | ((~x) & (z));

const f3 = (x, y, z) => ((x) | (~(y))) ^ (z);

const f4 = (x, y, z) => ((x) & (z)) | ((y) & (~(z)));

const f5 = (x, y, z) => (x) ^ ((y) | (~(z)));

const rotl = (x, n) => (x << n) | (x >>> (32 - n));

/**
 * RIPEMD160 hash algorithm.
 */
export class RIPEMD160Algo extends Hasher {
  _doReset() {
    this._hash = WordArray.create([0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0]);
  }

  _doProcessBlock(M, offset) {
    const _M = M;

    // Swap endian
    for (let i = 0; i < 16; i += 1) {
      // Shortcuts
      const offset_i = offset + i;
      const M_offset_i = _M[offset_i];

      // Swap
      _M[offset_i] = (
        (((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff)
        | (((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
      );
    }
    // Shortcut
    const H = this._hash.words;
    const hl = _hl.words;
    const hr = _hr.words;
    const zl = _zl.words;
    const zr = _zr.words;
    const sl = _sl.words;
    const sr = _sr.words;

    // Working variables
    let al = H[0];
    let bl = H[1];
    let cl = H[2];
    let dl = H[3];
    let el = H[4];
    let ar = H[0];
    let br = H[1];
    let cr = H[2];
    let dr = H[3];
    let er = H[4];

    // Computation
    let t;
    for (let i = 0; i < 80; i += 1) {
      t = (al + _M[offset + zl[i]]) | 0;
      if (i < 16) {
        t += f1(bl, cl, dl) + hl[0];
      } else if (i < 32) {
        t += f2(bl, cl, dl) + hl[1];
      } else if (i < 48) {
        t += f3(bl, cl, dl) + hl[2];
      } else if (i < 64) {
        t += f4(bl, cl, dl) + hl[3];
      } else { // if (i<80) {
        t += f5(bl, cl, dl) + hl[4];
      }
      t |= 0;
      t = rotl(t, sl[i]);
      t = (t + el) | 0;
      al = el;
      el = dl;
      dl = rotl(cl, 10);
      cl = bl;
      bl = t;

      t = (ar + _M[offset + zr[i]]) | 0;
      if (i < 16) {
        t += f5(br, cr, dr) + hr[0];
      } else if (i < 32) {
        t += f4(br, cr, dr) + hr[1];
      } else if (i < 48) {
        t += f3(br, cr, dr) + hr[2];
      } else if (i < 64) {
        t += f2(br, cr, dr) + hr[3];
      } else { // if (i<80) {
        t += f1(br, cr, dr) + hr[4];
      }
      t |= 0;
      t = rotl(t, sr[i]);
      t = (t + er) | 0;
      ar = er;
      er = dr;
      dr = rotl(cr, 10);
      cr = br;
      br = t;
    }
    // Intermediate hash value
    t = (H[1] + cl + dr) | 0;
    H[1] = (H[2] + dl + er) | 0;
    H[2] = (H[3] + el + ar) | 0;
    H[3] = (H[4] + al + br) | 0;
    H[4] = (H[0] + bl + cr) | 0;
    H[0] = t;
  }

  _doFinalize() {
    // Shortcuts
    const data = this._data;
    const dataWords = data.words;

    const nBitsTotal = this._nDataBytes * 8;
    const nBitsLeft = data.sigBytes * 8;

    // Add padding
    dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - (nBitsLeft % 32));
    dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
      (((nBitsTotal << 8) | (nBitsTotal >>> 24)) & 0x00ff00ff)
      | (((nBitsTotal << 24) | (nBitsTotal >>> 8)) & 0xff00ff00)
    );
    data.sigBytes = (dataWords.length + 1) * 4;

    // Hash final blocks
    this._process();

    // Shortcuts
    const hash = this._hash;
    const H = hash.words;

    // Swap endian
    for (let i = 0; i < 5; i += 1) {
      // Shortcut
      const H_i = H[i];

      // Swap
      H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff)
        | (((H_i << 24) | (H_i >>> 8)) & 0xff00ff00);
    }

    // Return final computed hash
    return hash;
  }

  clone() {
    const clone = super.clone.call(this);
    clone._hash = this._hash.clone();

    return clone;
  }
}

/**
 * Shortcut function to the hasher's object interface.
 *
 * @param {WordArray|string} message The message to hash.
 *
 * @return {WordArray} The hash.
 *
 * @static
 *
 * @example
 *
 *     var hash = CryptoJS.RIPEMD160('message');
 *     var hash = CryptoJS.RIPEMD160(wordArray);
 */
export const RIPEMD160 = Hasher._createHelper(RIPEMD160Algo);

/**
 * Shortcut function to the HMAC's object interface.
 *
 * @param {WordArray|string} message The message to hash.
 * @param {WordArray|string} key The secret key.
 *
 * @return {WordArray} The HMAC.
 *
 * @static
 *
 * @example
 *
 *     var hmac = CryptoJS.HmacRIPEMD160(message, key);
 */
export const HmacRIPEMD160 = Hasher._createHmacHelper(RIPEMD160Algo);