axelar-cgp-ton/dist/index.mjs.map

Utilities for Axelar Cross-Chain Gateway Protocol (CGP) on TON blockchain

{"version":3,"sources":["../node_modules/tweetnacl/nacl-fast.js","../utils/builders/messageBuilder.ts","../utils/constants/operations.ts","../utils/builders/cellBuilder.ts","../utils/crypto/encoding.ts","../utils/crypto/hashing.ts","../utils/crypto/signature.ts","../utils/serializers/messageSerializer.ts","../utils/serializers/signerSerializer.ts","../utils/serializers/gasInfoSerializer.ts","../utils/constants/costs.ts","../utils/constants/error.ts","../utils/constants/size.ts","../utils/constants/states.ts","../utils/jetton/JettonWallet.ts","../utils/jetton/JettonMinter.ts","../utils/jetton/JettonConstants.ts","../utils/jetton/utils.ts","../utils/types/index.ts"],"sourcesContent":["(function(nacl) {\n'use strict';\n\n// Ported in 2014 by Dmitry Chestnykh and Devi Mandiri.\n// Public domain.\n//\n// Implementation derived from TweetNaCl version 20140427.\n// See for details: http://tweetnacl.cr.yp.to/\n\nvar gf = function(init) {\n  var i, r = new Float64Array(16);\n  if (init) for (i = 0; i < init.length; i++) r[i] = init[i];\n  return r;\n};\n\n//  Pluggable, initialized in high-level API below.\nvar randombytes = function(/* x, n */) { throw new Error('no PRNG'); };\n\nvar _0 = new Uint8Array(16);\nvar _9 = new Uint8Array(32); _9[0] = 9;\n\nvar gf0 = gf(),\n    gf1 = gf([1]),\n    _121665 = gf([0xdb41, 1]),\n    D = gf([0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070, 0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203]),\n    D2 = gf([0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0, 0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406]),\n    X = gf([0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c, 0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169]),\n    Y = gf([0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666]),\n    I = gf([0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43, 0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83]);\n\nfunction ts64(x, i, h, l) {\n  x[i]   = (h >> 24) & 0xff;\n  x[i+1] = (h >> 16) & 0xff;\n  x[i+2] = (h >>  8) & 0xff;\n  x[i+3] = h & 0xff;\n  x[i+4] = (l >> 24)  & 0xff;\n  x[i+5] = (l >> 16)  & 0xff;\n  x[i+6] = (l >>  8)  & 0xff;\n  x[i+7] = l & 0xff;\n}\n\nfunction vn(x, xi, y, yi, n) {\n  var i,d = 0;\n  for (i = 0; i < n; i++) d |= x[xi+i]^y[yi+i];\n  return (1 & ((d - 1) >>> 8)) - 1;\n}\n\nfunction crypto_verify_16(x, xi, y, yi) {\n  return vn(x,xi,y,yi,16);\n}\n\nfunction crypto_verify_32(x, xi, y, yi) {\n  return vn(x,xi,y,yi,32);\n}\n\nfunction core_salsa20(o, p, k, c) {\n  var j0  = c[ 0] & 0xff | (c[ 1] & 0xff)<<8 | (c[ 2] & 0xff)<<16 | (c[ 3] & 0xff)<<24,\n      j1  = k[ 0] & 0xff | (k[ 1] & 0xff)<<8 | (k[ 2] & 0xff)<<16 | (k[ 3] & 0xff)<<24,\n      j2  = k[ 4] & 0xff | (k[ 5] & 0xff)<<8 | (k[ 6] & 0xff)<<16 | (k[ 7] & 0xff)<<24,\n      j3  = k[ 8] & 0xff | (k[ 9] & 0xff)<<8 | (k[10] & 0xff)<<16 | (k[11] & 0xff)<<24,\n      j4  = k[12] & 0xff | (k[13] & 0xff)<<8 | (k[14] & 0xff)<<16 | (k[15] & 0xff)<<24,\n      j5  = c[ 4] & 0xff | (c[ 5] & 0xff)<<8 | (c[ 6] & 0xff)<<16 | (c[ 7] & 0xff)<<24,\n      j6  = p[ 0] & 0xff | (p[ 1] & 0xff)<<8 | (p[ 2] & 0xff)<<16 | (p[ 3] & 0xff)<<24,\n      j7  = p[ 4] & 0xff | (p[ 5] & 0xff)<<8 | (p[ 6] & 0xff)<<16 | (p[ 7] & 0xff)<<24,\n      j8  = p[ 8] & 0xff | (p[ 9] & 0xff)<<8 | (p[10] & 0xff)<<16 | (p[11] & 0xff)<<24,\n      j9  = p[12] & 0xff | (p[13] & 0xff)<<8 | (p[14] & 0xff)<<16 | (p[15] & 0xff)<<24,\n      j10 = c[ 8] & 0xff | (c[ 9] & 0xff)<<8 | (c[10] & 0xff)<<16 | (c[11] & 0xff)<<24,\n      j11 = k[16] & 0xff | (k[17] & 0xff)<<8 | (k[18] & 0xff)<<16 | (k[19] & 0xff)<<24,\n      j12 = k[20] & 0xff | (k[21] & 0xff)<<8 | (k[22] & 0xff)<<16 | (k[23] & 0xff)<<24,\n      j13 = k[24] & 0xff | (k[25] & 0xff)<<8 | (k[26] & 0xff)<<16 | (k[27] & 0xff)<<24,\n      j14 = k[28] & 0xff | (k[29] & 0xff)<<8 | (k[30] & 0xff)<<16 | (k[31] & 0xff)<<24,\n      j15 = c[12] & 0xff | (c[13] & 0xff)<<8 | (c[14] & 0xff)<<16 | (c[15] & 0xff)<<24;\n\n  var x0 = j0, x1 = j1, x2 = j2, x3 = j3, x4 = j4, x5 = j5, x6 = j6, x7 = j7,\n      x8 = j8, x9 = j9, x10 = j10, x11 = j11, x12 = j12, x13 = j13, x14 = j14,\n      x15 = j15, u;\n\n  for (var i = 0; i < 20; i += 2) {\n    u = x0 + x12 | 0;\n    x4 ^= u<<7 | u>>>(32-7);\n    u = x4 + x0 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x4 | 0;\n    x12 ^= u<<13 | u>>>(32-13);\n    u = x12 + x8 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x1 | 0;\n    x9 ^= u<<7 | u>>>(32-7);\n    u = x9 + x5 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x9 | 0;\n    x1 ^= u<<13 | u>>>(32-13);\n    u = x1 + x13 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x6 | 0;\n    x14 ^= u<<7 | u>>>(32-7);\n    u = x14 + x10 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x14 | 0;\n    x6 ^= u<<13 | u>>>(32-13);\n    u = x6 + x2 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x11 | 0;\n    x3 ^= u<<7 | u>>>(32-7);\n    u = x3 + x15 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x3 | 0;\n    x11 ^= u<<13 | u>>>(32-13);\n    u = x11 + x7 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n\n    u = x0 + x3 | 0;\n    x1 ^= u<<7 | u>>>(32-7);\n    u = x1 + x0 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x1 | 0;\n    x3 ^= u<<13 | u>>>(32-13);\n    u = x3 + x2 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x4 | 0;\n    x6 ^= u<<7 | u>>>(32-7);\n    u = x6 + x5 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x6 | 0;\n    x4 ^= u<<13 | u>>>(32-13);\n    u = x4 + x7 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x9 | 0;\n    x11 ^= u<<7 | u>>>(32-7);\n    u = x11 + x10 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x11 | 0;\n    x9 ^= u<<13 | u>>>(32-13);\n    u = x9 + x8 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x14 | 0;\n    x12 ^= u<<7 | u>>>(32-7);\n    u = x12 + x15 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x12 | 0;\n    x14 ^= u<<13 | u>>>(32-13);\n    u = x14 + x13 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n  }\n   x0 =  x0 +  j0 | 0;\n   x1 =  x1 +  j1 | 0;\n   x2 =  x2 +  j2 | 0;\n   x3 =  x3 +  j3 | 0;\n   x4 =  x4 +  j4 | 0;\n   x5 =  x5 +  j5 | 0;\n   x6 =  x6 +  j6 | 0;\n   x7 =  x7 +  j7 | 0;\n   x8 =  x8 +  j8 | 0;\n   x9 =  x9 +  j9 | 0;\n  x10 = x10 + j10 | 0;\n  x11 = x11 + j11 | 0;\n  x12 = x12 + j12 | 0;\n  x13 = x13 + j13 | 0;\n  x14 = x14 + j14 | 0;\n  x15 = x15 + j15 | 0;\n\n  o[ 0] = x0 >>>  0 & 0xff;\n  o[ 1] = x0 >>>  8 & 0xff;\n  o[ 2] = x0 >>> 16 & 0xff;\n  o[ 3] = x0 >>> 24 & 0xff;\n\n  o[ 4] = x1 >>>  0 & 0xff;\n  o[ 5] = x1 >>>  8 & 0xff;\n  o[ 6] = x1 >>> 16 & 0xff;\n  o[ 7] = x1 >>> 24 & 0xff;\n\n  o[ 8] = x2 >>>  0 & 0xff;\n  o[ 9] = x2 >>>  8 & 0xff;\n  o[10] = x2 >>> 16 & 0xff;\n  o[11] = x2 >>> 24 & 0xff;\n\n  o[12] = x3 >>>  0 & 0xff;\n  o[13] = x3 >>>  8 & 0xff;\n  o[14] = x3 >>> 16 & 0xff;\n  o[15] = x3 >>> 24 & 0xff;\n\n  o[16] = x4 >>>  0 & 0xff;\n  o[17] = x4 >>>  8 & 0xff;\n  o[18] = x4 >>> 16 & 0xff;\n  o[19] = x4 >>> 24 & 0xff;\n\n  o[20] = x5 >>>  0 & 0xff;\n  o[21] = x5 >>>  8 & 0xff;\n  o[22] = x5 >>> 16 & 0xff;\n  o[23] = x5 >>> 24 & 0xff;\n\n  o[24] = x6 >>>  0 & 0xff;\n  o[25] = x6 >>>  8 & 0xff;\n  o[26] = x6 >>> 16 & 0xff;\n  o[27] = x6 >>> 24 & 0xff;\n\n  o[28] = x7 >>>  0 & 0xff;\n  o[29] = x7 >>>  8 & 0xff;\n  o[30] = x7 >>> 16 & 0xff;\n  o[31] = x7 >>> 24 & 0xff;\n\n  o[32] = x8 >>>  0 & 0xff;\n  o[33] = x8 >>>  8 & 0xff;\n  o[34] = x8 >>> 16 & 0xff;\n  o[35] = x8 >>> 24 & 0xff;\n\n  o[36] = x9 >>>  0 & 0xff;\n  o[37] = x9 >>>  8 & 0xff;\n  o[38] = x9 >>> 16 & 0xff;\n  o[39] = x9 >>> 24 & 0xff;\n\n  o[40] = x10 >>>  0 & 0xff;\n  o[41] = x10 >>>  8 & 0xff;\n  o[42] = x10 >>> 16 & 0xff;\n  o[43] = x10 >>> 24 & 0xff;\n\n  o[44] = x11 >>>  0 & 0xff;\n  o[45] = x11 >>>  8 & 0xff;\n  o[46] = x11 >>> 16 & 0xff;\n  o[47] = x11 >>> 24 & 0xff;\n\n  o[48] = x12 >>>  0 & 0xff;\n  o[49] = x12 >>>  8 & 0xff;\n  o[50] = x12 >>> 16 & 0xff;\n  o[51] = x12 >>> 24 & 0xff;\n\n  o[52] = x13 >>>  0 & 0xff;\n  o[53] = x13 >>>  8 & 0xff;\n  o[54] = x13 >>> 16 & 0xff;\n  o[55] = x13 >>> 24 & 0xff;\n\n  o[56] = x14 >>>  0 & 0xff;\n  o[57] = x14 >>>  8 & 0xff;\n  o[58] = x14 >>> 16 & 0xff;\n  o[59] = x14 >>> 24 & 0xff;\n\n  o[60] = x15 >>>  0 & 0xff;\n  o[61] = x15 >>>  8 & 0xff;\n  o[62] = x15 >>> 16 & 0xff;\n  o[63] = x15 >>> 24 & 0xff;\n}\n\nfunction core_hsalsa20(o,p,k,c) {\n  var j0  = c[ 0] & 0xff | (c[ 1] & 0xff)<<8 | (c[ 2] & 0xff)<<16 | (c[ 3] & 0xff)<<24,\n      j1  = k[ 0] & 0xff | (k[ 1] & 0xff)<<8 | (k[ 2] & 0xff)<<16 | (k[ 3] & 0xff)<<24,\n      j2  = k[ 4] & 0xff | (k[ 5] & 0xff)<<8 | (k[ 6] & 0xff)<<16 | (k[ 7] & 0xff)<<24,\n      j3  = k[ 8] & 0xff | (k[ 9] & 0xff)<<8 | (k[10] & 0xff)<<16 | (k[11] & 0xff)<<24,\n      j4  = k[12] & 0xff | (k[13] & 0xff)<<8 | (k[14] & 0xff)<<16 | (k[15] & 0xff)<<24,\n      j5  = c[ 4] & 0xff | (c[ 5] & 0xff)<<8 | (c[ 6] & 0xff)<<16 | (c[ 7] & 0xff)<<24,\n      j6  = p[ 0] & 0xff | (p[ 1] & 0xff)<<8 | (p[ 2] & 0xff)<<16 | (p[ 3] & 0xff)<<24,\n      j7  = p[ 4] & 0xff | (p[ 5] & 0xff)<<8 | (p[ 6] & 0xff)<<16 | (p[ 7] & 0xff)<<24,\n      j8  = p[ 8] & 0xff | (p[ 9] & 0xff)<<8 | (p[10] & 0xff)<<16 | (p[11] & 0xff)<<24,\n      j9  = p[12] & 0xff | (p[13] & 0xff)<<8 | (p[14] & 0xff)<<16 | (p[15] & 0xff)<<24,\n      j10 = c[ 8] & 0xff | (c[ 9] & 0xff)<<8 | (c[10] & 0xff)<<16 | (c[11] & 0xff)<<24,\n      j11 = k[16] & 0xff | (k[17] & 0xff)<<8 | (k[18] & 0xff)<<16 | (k[19] & 0xff)<<24,\n      j12 = k[20] & 0xff | (k[21] & 0xff)<<8 | (k[22] & 0xff)<<16 | (k[23] & 0xff)<<24,\n      j13 = k[24] & 0xff | (k[25] & 0xff)<<8 | (k[26] & 0xff)<<16 | (k[27] & 0xff)<<24,\n      j14 = k[28] & 0xff | (k[29] & 0xff)<<8 | (k[30] & 0xff)<<16 | (k[31] & 0xff)<<24,\n      j15 = c[12] & 0xff | (c[13] & 0xff)<<8 | (c[14] & 0xff)<<16 | (c[15] & 0xff)<<24;\n\n  var x0 = j0, x1 = j1, x2 = j2, x3 = j3, x4 = j4, x5 = j5, x6 = j6, x7 = j7,\n      x8 = j8, x9 = j9, x10 = j10, x11 = j11, x12 = j12, x13 = j13, x14 = j14,\n      x15 = j15, u;\n\n  for (var i = 0; i < 20; i += 2) {\n    u = x0 + x12 | 0;\n    x4 ^= u<<7 | u>>>(32-7);\n    u = x4 + x0 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x4 | 0;\n    x12 ^= u<<13 | u>>>(32-13);\n    u = x12 + x8 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x1 | 0;\n    x9 ^= u<<7 | u>>>(32-7);\n    u = x9 + x5 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x9 | 0;\n    x1 ^= u<<13 | u>>>(32-13);\n    u = x1 + x13 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x6 | 0;\n    x14 ^= u<<7 | u>>>(32-7);\n    u = x14 + x10 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x14 | 0;\n    x6 ^= u<<13 | u>>>(32-13);\n    u = x6 + x2 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x11 | 0;\n    x3 ^= u<<7 | u>>>(32-7);\n    u = x3 + x15 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x3 | 0;\n    x11 ^= u<<13 | u>>>(32-13);\n    u = x11 + x7 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n\n    u = x0 + x3 | 0;\n    x1 ^= u<<7 | u>>>(32-7);\n    u = x1 + x0 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x1 | 0;\n    x3 ^= u<<13 | u>>>(32-13);\n    u = x3 + x2 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x4 | 0;\n    x6 ^= u<<7 | u>>>(32-7);\n    u = x6 + x5 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x6 | 0;\n    x4 ^= u<<13 | u>>>(32-13);\n    u = x4 + x7 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x9 | 0;\n    x11 ^= u<<7 | u>>>(32-7);\n    u = x11 + x10 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x11 | 0;\n    x9 ^= u<<13 | u>>>(32-13);\n    u = x9 + x8 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x14 | 0;\n    x12 ^= u<<7 | u>>>(32-7);\n    u = x12 + x15 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x12 | 0;\n    x14 ^= u<<13 | u>>>(32-13);\n    u = x14 + x13 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n  }\n\n  o[ 0] = x0 >>>  0 & 0xff;\n  o[ 1] = x0 >>>  8 & 0xff;\n  o[ 2] = x0 >>> 16 & 0xff;\n  o[ 3] = x0 >>> 24 & 0xff;\n\n  o[ 4] = x5 >>>  0 & 0xff;\n  o[ 5] = x5 >>>  8 & 0xff;\n  o[ 6] = x5 >>> 16 & 0xff;\n  o[ 7] = x5 >>> 24 & 0xff;\n\n  o[ 8] = x10 >>>  0 & 0xff;\n  o[ 9] = x10 >>>  8 & 0xff;\n  o[10] = x10 >>> 16 & 0xff;\n  o[11] = x10 >>> 24 & 0xff;\n\n  o[12] = x15 >>>  0 & 0xff;\n  o[13] = x15 >>>  8 & 0xff;\n  o[14] = x15 >>> 16 & 0xff;\n  o[15] = x15 >>> 24 & 0xff;\n\n  o[16] = x6 >>>  0 & 0xff;\n  o[17] = x6 >>>  8 & 0xff;\n  o[18] = x6 >>> 16 & 0xff;\n  o[19] = x6 >>> 24 & 0xff;\n\n  o[20] = x7 >>>  0 & 0xff;\n  o[21] = x7 >>>  8 & 0xff;\n  o[22] = x7 >>> 16 & 0xff;\n  o[23] = x7 >>> 24 & 0xff;\n\n  o[24] = x8 >>>  0 & 0xff;\n  o[25] = x8 >>>  8 & 0xff;\n  o[26] = x8 >>> 16 & 0xff;\n  o[27] = x8 >>> 24 & 0xff;\n\n  o[28] = x9 >>>  0 & 0xff;\n  o[29] = x9 >>>  8 & 0xff;\n  o[30] = x9 >>> 16 & 0xff;\n  o[31] = x9 >>> 24 & 0xff;\n}\n\nfunction crypto_core_salsa20(out,inp,k,c) {\n  core_salsa20(out,inp,k,c);\n}\n\nfunction crypto_core_hsalsa20(out,inp,k,c) {\n  core_hsalsa20(out,inp,k,c);\n}\n\nvar sigma = new Uint8Array([101, 120, 112, 97, 110, 100, 32, 51, 50, 45, 98, 121, 116, 101, 32, 107]);\n            // \"expand 32-byte k\"\n\nfunction crypto_stream_salsa20_xor(c,cpos,m,mpos,b,n,k) {\n  var z = new Uint8Array(16), x = new Uint8Array(64);\n  var u, i;\n  for (i = 0; i < 16; i++) z[i] = 0;\n  for (i = 0; i < 8; i++) z[i] = n[i];\n  while (b >= 64) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < 64; i++) c[cpos+i] = m[mpos+i] ^ x[i];\n    u = 1;\n    for (i = 8; i < 16; i++) {\n      u = u + (z[i] & 0xff) | 0;\n      z[i] = u & 0xff;\n      u >>>= 8;\n    }\n    b -= 64;\n    cpos += 64;\n    mpos += 64;\n  }\n  if (b > 0) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < b; i++) c[cpos+i] = m[mpos+i] ^ x[i];\n  }\n  return 0;\n}\n\nfunction crypto_stream_salsa20(c,cpos,b,n,k) {\n  var z = new Uint8Array(16), x = new Uint8Array(64);\n  var u, i;\n  for (i = 0; i < 16; i++) z[i] = 0;\n  for (i = 0; i < 8; i++) z[i] = n[i];\n  while (b >= 64) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < 64; i++) c[cpos+i] = x[i];\n    u = 1;\n    for (i = 8; i < 16; i++) {\n      u = u + (z[i] & 0xff) | 0;\n      z[i] = u & 0xff;\n      u >>>= 8;\n    }\n    b -= 64;\n    cpos += 64;\n  }\n  if (b > 0) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < b; i++) c[cpos+i] = x[i];\n  }\n  return 0;\n}\n\nfunction crypto_stream(c,cpos,d,n,k) {\n  var s = new Uint8Array(32);\n  crypto_core_hsalsa20(s,n,k,sigma);\n  var sn = new Uint8Array(8);\n  for (var i = 0; i < 8; i++) sn[i] = n[i+16];\n  return crypto_stream_salsa20(c,cpos,d,sn,s);\n}\n\nfunction crypto_stream_xor(c,cpos,m,mpos,d,n,k) {\n  var s = new Uint8Array(32);\n  crypto_core_hsalsa20(s,n,k,sigma);\n  var sn = new Uint8Array(8);\n  for (var i = 0; i < 8; i++) sn[i] = n[i+16];\n  return crypto_stream_salsa20_xor(c,cpos,m,mpos,d,sn,s);\n}\n\n/*\n* Port of Andrew Moon's Poly1305-donna-16. Public domain.\n* https://github.com/floodyberry/poly1305-donna\n*/\n\nvar poly1305 = function(key) {\n  this.buffer = new Uint8Array(16);\n  this.r = new Uint16Array(10);\n  this.h = new Uint16Array(10);\n  this.pad = new Uint16Array(8);\n  this.leftover = 0;\n  this.fin = 0;\n\n  var t0, t1, t2, t3, t4, t5, t6, t7;\n\n  t0 = key[ 0] & 0xff | (key[ 1] & 0xff) << 8; this.r[0] = ( t0                     ) & 0x1fff;\n  t1 = key[ 2] & 0xff | (key[ 3] & 0xff) << 8; this.r[1] = ((t0 >>> 13) | (t1 <<  3)) & 0x1fff;\n  t2 = key[ 4] & 0xff | (key[ 5] & 0xff) << 8; this.r[2] = ((t1 >>> 10) | (t2 <<  6)) & 0x1f03;\n  t3 = key[ 6] & 0xff | (key[ 7] & 0xff) << 8; this.r[3] = ((t2 >>>  7) | (t3 <<  9)) & 0x1fff;\n  t4 = key[ 8] & 0xff | (key[ 9] & 0xff) << 8; this.r[4] = ((t3 >>>  4) | (t4 << 12)) & 0x00ff;\n  this.r[5] = ((t4 >>>  1)) & 0x1ffe;\n  t5 = key[10] & 0xff | (key[11] & 0xff) << 8; this.r[6] = ((t4 >>> 14) | (t5 <<  2)) & 0x1fff;\n  t6 = key[12] & 0xff | (key[13] & 0xff) << 8; this.r[7] = ((t5 >>> 11) | (t6 <<  5)) & 0x1f81;\n  t7 = key[14] & 0xff | (key[15] & 0xff) << 8; this.r[8] = ((t6 >>>  8) | (t7 <<  8)) & 0x1fff;\n  this.r[9] = ((t7 >>>  5)) & 0x007f;\n\n  this.pad[0] = key[16] & 0xff | (key[17] & 0xff) << 8;\n  this.pad[1] = key[18] & 0xff | (key[19] & 0xff) << 8;\n  this.pad[2] = key[20] & 0xff | (key[21] & 0xff) << 8;\n  this.pad[3] = key[22] & 0xff | (key[23] & 0xff) << 8;\n  this.pad[4] = key[24] & 0xff | (key[25] & 0xff) << 8;\n  this.pad[5] = key[26] & 0xff | (key[27] & 0xff) << 8;\n  this.pad[6] = key[28] & 0xff | (key[29] & 0xff) << 8;\n  this.pad[7] = key[30] & 0xff | (key[31] & 0xff) << 8;\n};\n\npoly1305.prototype.blocks = function(m, mpos, bytes) {\n  var hibit = this.fin ? 0 : (1 << 11);\n  var t0, t1, t2, t3, t4, t5, t6, t7, c;\n  var d0, d1, d2, d3, d4, d5, d6, d7, d8, d9;\n\n  var h0 = this.h[0],\n      h1 = this.h[1],\n      h2 = this.h[2],\n      h3 = this.h[3],\n      h4 = this.h[4],\n      h5 = this.h[5],\n      h6 = this.h[6],\n      h7 = this.h[7],\n      h8 = this.h[8],\n      h9 = this.h[9];\n\n  var r0 = this.r[0],\n      r1 = this.r[1],\n      r2 = this.r[2],\n      r3 = this.r[3],\n      r4 = this.r[4],\n      r5 = this.r[5],\n      r6 = this.r[6],\n      r7 = this.r[7],\n      r8 = this.r[8],\n      r9 = this.r[9];\n\n  while (bytes >= 16) {\n    t0 = m[mpos+ 0] & 0xff | (m[mpos+ 1] & 0xff) << 8; h0 += ( t0                     ) & 0x1fff;\n    t1 = m[mpos+ 2] & 0xff | (m[mpos+ 3] & 0xff) << 8; h1 += ((t0 >>> 13) | (t1 <<  3)) & 0x1fff;\n    t2 = m[mpos+ 4] & 0xff | (m[mpos+ 5] & 0xff) << 8; h2 += ((t1 >>> 10) | (t2 <<  6)) & 0x1fff;\n    t3 = m[mpos+ 6] & 0xff | (m[mpos+ 7] & 0xff) << 8; h3 += ((t2 >>>  7) | (t3 <<  9)) & 0x1fff;\n    t4 = m[mpos+ 8] & 0xff | (m[mpos+ 9] & 0xff) << 8; h4 += ((t3 >>>  4) | (t4 << 12)) & 0x1fff;\n    h5 += ((t4 >>>  1)) & 0x1fff;\n    t5 = m[mpos+10] & 0xff | (m[mpos+11] & 0xff) << 8; h6 += ((t4 >>> 14) | (t5 <<  2)) & 0x1fff;\n    t6 = m[mpos+12] & 0xff | (m[mpos+13] & 0xff) << 8; h7 += ((t5 >>> 11) | (t6 <<  5)) & 0x1fff;\n    t7 = m[mpos+14] & 0xff | (m[mpos+15] & 0xff) << 8; h8 += ((t6 >>>  8) | (t7 <<  8)) & 0x1fff;\n    h9 += ((t7 >>> 5)) | hibit;\n\n    c = 0;\n\n    d0 = c;\n    d0 += h0 * r0;\n    d0 += h1 * (5 * r9);\n    d0 += h2 * (5 * r8);\n    d0 += h3 * (5 * r7);\n    d0 += h4 * (5 * r6);\n    c = (d0 >>> 13); d0 &= 0x1fff;\n    d0 += h5 * (5 * r5);\n    d0 += h6 * (5 * r4);\n    d0 += h7 * (5 * r3);\n    d0 += h8 * (5 * r2);\n    d0 += h9 * (5 * r1);\n    c += (d0 >>> 13); d0 &= 0x1fff;\n\n    d1 = c;\n    d1 += h0 * r1;\n    d1 += h1 * r0;\n    d1 += h2 * (5 * r9);\n    d1 += h3 * (5 * r8);\n    d1 += h4 * (5 * r7);\n    c = (d1 >>> 13); d1 &= 0x1fff;\n    d1 += h5 * (5 * r6);\n    d1 += h6 * (5 * r5);\n    d1 += h7 * (5 * r4);\n    d1 += h8 * (5 * r3);\n    d1 += h9 * (5 * r2);\n    c += (d1 >>> 13); d1 &= 0x1fff;\n\n    d2 = c;\n    d2 += h0 * r2;\n    d2 += h1 * r1;\n    d2 += h2 * r0;\n    d2 += h3 * (5 * r9);\n    d2 += h4 * (5 * r8);\n    c = (d2 >>> 13); d2 &= 0x1fff;\n    d2 += h5 * (5 * r7);\n    d2 += h6 * (5 * r6);\n    d2 += h7 * (5 * r5);\n    d2 += h8 * (5 * r4);\n    d2 += h9 * (5 * r3);\n    c += (d2 >>> 13); d2 &= 0x1fff;\n\n    d3 = c;\n    d3 += h0 * r3;\n    d3 += h1 * r2;\n    d3 += h2 * r1;\n    d3 += h3 * r0;\n    d3 += h4 * (5 * r9);\n    c = (d3 >>> 13); d3 &= 0x1fff;\n    d3 += h5 * (5 * r8);\n    d3 += h6 * (5 * r7);\n    d3 += h7 * (5 * r6);\n    d3 += h8 * (5 * r5);\n    d3 += h9 * (5 * r4);\n    c += (d3 >>> 13); d3 &= 0x1fff;\n\n    d4 = c;\n    d4 += h0 * r4;\n    d4 += h1 * r3;\n    d4 += h2 * r2;\n    d4 += h3 * r1;\n    d4 += h4 * r0;\n    c = (d4 >>> 13); d4 &= 0x1fff;\n    d4 += h5 * (5 * r9);\n    d4 += h6 * (5 * r8);\n    d4 += h7 * (5 * r7);\n    d4 += h8 * (5 * r6);\n    d4 += h9 * (5 * r5);\n    c += (d4 >>> 13); d4 &= 0x1fff;\n\n    d5 = c;\n    d5 += h0 * r5;\n    d5 += h1 * r4;\n    d5 += h2 * r3;\n    d5 += h3 * r2;\n    d5 += h4 * r1;\n    c = (d5 >>> 13); d5 &= 0x1fff;\n    d5 += h5 * r0;\n    d5 += h6 * (5 * r9);\n    d5 += h7 * (5 * r8);\n    d5 += h8 * (5 * r7);\n    d5 += h9 * (5 * r6);\n    c += (d5 >>> 13); d5 &= 0x1fff;\n\n    d6 = c;\n    d6 += h0 * r6;\n    d6 += h1 * r5;\n    d6 += h2 * r4;\n    d6 += h3 * r3;\n    d6 += h4 * r2;\n    c = (d6 >>> 13); d6 &= 0x1fff;\n    d6 += h5 * r1;\n    d6 += h6 * r0;\n    d6 += h7 * (5 * r9);\n    d6 += h8 * (5 * r8);\n    d6 += h9 * (5 * r7);\n    c += (d6 >>> 13); d6 &= 0x1fff;\n\n    d7 = c;\n    d7 += h0 * r7;\n    d7 += h1 * r6;\n    d7 += h2 * r5;\n    d7 += h3 * r4;\n    d7 += h4 * r3;\n    c = (d7 >>> 13); d7 &= 0x1fff;\n    d7 += h5 * r2;\n    d7 += h6 * r1;\n    d7 += h7 * r0;\n    d7 += h8 * (5 * r9);\n    d7 += h9 * (5 * r8);\n    c += (d7 >>> 13); d7 &= 0x1fff;\n\n    d8 = c;\n    d8 += h0 * r8;\n    d8 += h1 * r7;\n    d8 += h2 * r6;\n    d8 += h3 * r5;\n    d8 += h4 * r4;\n    c = (d8 >>> 13); d8 &= 0x1fff;\n    d8 += h5 * r3;\n    d8 += h6 * r2;\n    d8 += h7 * r1;\n    d8 += h8 * r0;\n    d8 += h9 * (5 * r9);\n    c += (d8 >>> 13); d8 &= 0x1fff;\n\n    d9 = c;\n    d9 += h0 * r9;\n    d9 += h1 * r8;\n    d9 += h2 * r7;\n    d9 += h3 * r6;\n    d9 += h4 * r5;\n    c = (d9 >>> 13); d9 &= 0x1fff;\n    d9 += h5 * r4;\n    d9 += h6 * r3;\n    d9 += h7 * r2;\n    d9 += h8 * r1;\n    d9 += h9 * r0;\n    c += (d9 >>> 13); d9 &= 0x1fff;\n\n    c = (((c << 2) + c)) | 0;\n    c = (c + d0) | 0;\n    d0 = c & 0x1fff;\n    c = (c >>> 13);\n    d1 += c;\n\n    h0 = d0;\n    h1 = d1;\n    h2 = d2;\n    h3 = d3;\n    h4 = d4;\n    h5 = d5;\n    h6 = d6;\n    h7 = d7;\n    h8 = d8;\n    h9 = d9;\n\n    mpos += 16;\n    bytes -= 16;\n  }\n  this.h[0] = h0;\n  this.h[1] = h1;\n  this.h[2] = h2;\n  this.h[3] = h3;\n  this.h[4] = h4;\n  this.h[5] = h5;\n  this.h[6] = h6;\n  this.h[7] = h7;\n  this.h[8] = h8;\n  this.h[9] = h9;\n};\n\npoly1305.prototype.finish = function(mac, macpos) {\n  var g = new Uint16Array(10);\n  var c, mask, f, i;\n\n  if (this.leftover) {\n    i = this.leftover;\n    this.buffer[i++] = 1;\n    for (; i < 16; i++) this.buffer[i] = 0;\n    this.fin = 1;\n    this.blocks(this.buffer, 0, 16);\n  }\n\n  c = this.h[1] >>> 13;\n  this.h[1] &= 0x1fff;\n  for (i = 2; i < 10; i++) {\n    this.h[i] += c;\n    c = this.h[i] >>> 13;\n    this.h[i] &= 0x1fff;\n  }\n  this.h[0] += (c * 5);\n  c = this.h[0] >>> 13;\n  this.h[0] &= 0x1fff;\n  this.h[1] += c;\n  c = this.h[1] >>> 13;\n  this.h[1] &= 0x1fff;\n  this.h[2] += c;\n\n  g[0] = this.h[0] + 5;\n  c = g[0] >>> 13;\n  g[0] &= 0x1fff;\n  for (i = 1; i < 10; i++) {\n    g[i] = this.h[i] + c;\n    c = g[i] >>> 13;\n    g[i] &= 0x1fff;\n  }\n  g[9] -= (1 << 13);\n\n  mask = (c ^ 1) - 1;\n  for (i = 0; i < 10; i++) g[i] &= mask;\n  mask = ~mask;\n  for (i = 0; i < 10; i++) this.h[i] = (this.h[i] & mask) | g[i];\n\n  this.h[0] = ((this.h[0]       ) | (this.h[1] << 13)                    ) & 0xffff;\n  this.h[1] = ((this.h[1] >>>  3) | (this.h[2] << 10)                    ) & 0xffff;\n  this.h[2] = ((this.h[2] >>>  6) | (this.h[3] <<  7)                    ) & 0xffff;\n  this.h[3] = ((this.h[3] >>>  9) | (this.h[4] <<  4)                    ) & 0xffff;\n  this.h[4] = ((this.h[4] >>> 12) | (this.h[5] <<  1) | (this.h[6] << 14)) & 0xffff;\n  this.h[5] = ((this.h[6] >>>  2) | (this.h[7] << 11)                    ) & 0xffff;\n  this.h[6] = ((this.h[7] >>>  5) | (this.h[8] <<  8)                    ) & 0xffff;\n  this.h[7] = ((this.h[8] >>>  8) | (this.h[9] <<  5)                    ) & 0xffff;\n\n  f = this.h[0] + this.pad[0];\n  this.h[0] = f & 0xffff;\n  for (i = 1; i < 8; i++) {\n    f = (((this.h[i] + this.pad[i]) | 0) + (f >>> 16)) | 0;\n    this.h[i] = f & 0xffff;\n  }\n\n  mac[macpos+ 0] = (this.h[0] >>> 0) & 0xff;\n  mac[macpos+ 1] = (this.h[0] >>> 8) & 0xff;\n  mac[macpos+ 2] = (this.h[1] >>> 0) & 0xff;\n  mac[macpos+ 3] = (this.h[1] >>> 8) & 0xff;\n  mac[macpos+ 4] = (this.h[2] >>> 0) & 0xff;\n  mac[macpos+ 5] = (this.h[2] >>> 8) & 0xff;\n  mac[macpos+ 6] = (this.h[3] >>> 0) & 0xff;\n  mac[macpos+ 7] = (this.h[3] >>> 8) & 0xff;\n  mac[macpos+ 8] = (this.h[4] >>> 0) & 0xff;\n  mac[macpos+ 9] = (this.h[4] >>> 8) & 0xff;\n  mac[macpos+10] = (this.h[5] >>> 0) & 0xff;\n  mac[macpos+11] = (this.h[5] >>> 8) & 0xff;\n  mac[macpos+12] = (this.h[6] >>> 0) & 0xff;\n  mac[macpos+13] = (this.h[6] >>> 8) & 0xff;\n  mac[macpos+14] = (this.h[7] >>> 0) & 0xff;\n  mac[macpos+15] = (this.h[7] >>> 8) & 0xff;\n};\n\npoly1305.prototype.update = function(m, mpos, bytes) {\n  var i, want;\n\n  if (this.leftover) {\n    want = (16 - this.leftover);\n    if (want > bytes)\n      want = bytes;\n    for (i = 0; i < want; i++)\n      this.buffer[this.leftover + i] = m[mpos+i];\n    bytes -= want;\n    mpos += want;\n    this.leftover += want;\n    if (this.leftover < 16)\n      return;\n    this.blocks(this.buffer, 0, 16);\n    this.leftover = 0;\n  }\n\n  if (bytes >= 16) {\n    want = bytes - (bytes % 16);\n    this.blocks(m, mpos, want);\n    mpos += want;\n    bytes -= want;\n  }\n\n  if (bytes) {\n    for (i = 0; i < bytes; i++)\n      this.buffer[this.leftover + i] = m[mpos+i];\n    this.leftover += bytes;\n  }\n};\n\nfunction crypto_onetimeauth(out, outpos, m, mpos, n, k) {\n  var s = new poly1305(k);\n  s.update(m, mpos, n);\n  s.finish(out, outpos);\n  return 0;\n}\n\nfunction crypto_onetimeauth_verify(h, hpos, m, mpos, n, k) {\n  var x = new Uint8Array(16);\n  crypto_onetimeauth(x,0,m,mpos,n,k);\n  return crypto_verify_16(h,hpos,x,0);\n}\n\nfunction crypto_secretbox(c,m,d,n,k) {\n  var i;\n  if (d < 32) return -1;\n  crypto_stream_xor(c,0,m,0,d,n,k);\n  crypto_onetimeauth(c, 16, c, 32, d - 32, c);\n  for (i = 0; i < 16; i++) c[i] = 0;\n  return 0;\n}\n\nfunction crypto_secretbox_open(m,c,d,n,k) {\n  var i;\n  var x = new Uint8Array(32);\n  if (d < 32) return -1;\n  crypto_stream(x,0,32,n,k);\n  if (crypto_onetimeauth_verify(c, 16,c, 32,d - 32,x) !== 0) return -1;\n  crypto_stream_xor(m,0,c,0,d,n,k);\n  for (i = 0; i < 32; i++) m[i] = 0;\n  return 0;\n}\n\nfunction set25519(r, a) {\n  var i;\n  for (i = 0; i < 16; i++) r[i] = a[i]|0;\n}\n\nfunction car25519(o) {\n  var i, v, c = 1;\n  for (i = 0; i < 16; i++) {\n    v = o[i] + c + 65535;\n    c = Math.floor(v / 65536);\n    o[i] = v - c * 65536;\n  }\n  o[0] += c-1 + 37 * (c-1);\n}\n\nfunction sel25519(p, q, b) {\n  var t, c = ~(b-1);\n  for (var i = 0; i < 16; i++) {\n    t = c & (p[i] ^ q[i]);\n    p[i] ^= t;\n    q[i] ^= t;\n  }\n}\n\nfunction pack25519(o, n) {\n  var i, j, b;\n  var m = gf(), t = gf();\n  for (i = 0; i < 16; i++) t[i] = n[i];\n  car25519(t);\n  car25519(t);\n  car25519(t);\n  for (j = 0; j < 2; j++) {\n    m[0] = t[0] - 0xffed;\n    for (i = 1; i < 15; i++) {\n      m[i] = t[i] - 0xffff - ((m[i-1]>>16) & 1);\n      m[i-1] &= 0xffff;\n    }\n    m[15] = t[15] - 0x7fff - ((m[14]>>16) & 1);\n    b = (m[15]>>16) & 1;\n    m[14] &= 0xffff;\n    sel25519(t, m, 1-b);\n  }\n  for (i = 0; i < 16; i++) {\n    o[2*i] = t[i] & 0xff;\n    o[2*i+1] = t[i]>>8;\n  }\n}\n\nfunction neq25519(a, b) {\n  var c = new Uint8Array(32), d = new Uint8Array(32);\n  pack25519(c, a);\n  pack25519(d, b);\n  return crypto_verify_32(c, 0, d, 0);\n}\n\nfunction par25519(a) {\n  var d = new Uint8Array(32);\n  pack25519(d, a);\n  return d[0] & 1;\n}\n\nfunction unpack25519(o, n) {\n  var i;\n  for (i = 0; i < 16; i++) o[i] = n[2*i] + (n[2*i+1] << 8);\n  o[15] &= 0x7fff;\n}\n\nfunction A(o, a, b) {\n  for (var i = 0; i < 16; i++) o[i] = a[i] + b[i];\n}\n\nfunction Z(o, a, b) {\n  for (var i = 0; i < 16; i++) o[i] = a[i] - b[i];\n}\n\nfunction M(o, a, b) {\n  var v, c,\n     t0 = 0,  t1 = 0,  t2 = 0,  t3 = 0,  t4 = 0,  t5 = 0,  t6 = 0,  t7 = 0,\n     t8 = 0,  t9 = 0, t10 = 0, t11 = 0, t12 = 0, t13 = 0, t14 = 0, t15 = 0,\n    t16 = 0, t17 = 0, t18 = 0, t19 = 0, t20 = 0, t21 = 0, t22 = 0, t23 = 0,\n    t24 = 0, t25 = 0, t26 = 0, t27 = 0, t28 = 0, t29 = 0, t30 = 0,\n    b0 = b[0],\n    b1 = b[1],\n    b2 = b[2],\n    b3 = b[3],\n    b4 = b[4],\n    b5 = b[5],\n    b6 = b[6],\n    b7 = b[7],\n    b8 = b[8],\n    b9 = b[9],\n    b10 = b[10],\n    b11 = b[11],\n    b12 = b[12],\n    b13 = b[13],\n    b14 = b[14],\n    b15 = b[15];\n\n  v = a[0];\n  t0 += v * b0;\n  t1 += v * b1;\n  t2 += v * b2;\n  t3 += v * b3;\n  t4 += v * b4;\n  t5 += v * b5;\n  t6 += v * b6;\n  t7 += v * b7;\n  t8 += v * b8;\n  t9 += v * b9;\n  t10 += v * b10;\n  t11 += v * b11;\n  t12 += v * b12;\n  t13 += v * b13;\n  t14 += v * b14;\n  t15 += v * b15;\n  v = a[1];\n  t1 += v * b0;\n  t2 += v * b1;\n  t3 += v * b2;\n  t4 += v * b3;\n  t5 += v * b4;\n  t6 += v * b5;\n  t7 += v * b6;\n  t8 += v * b7;\n  t9 += v * b8;\n  t10 += v * b9;\n  t11 += v * b10;\n  t12 += v * b11;\n  t13 += v * b12;\n  t14 += v * b13;\n  t15 += v * b14;\n  t16 += v * b15;\n  v = a[2];\n  t2 += v * b0;\n  t3 += v * b1;\n  t4 += v * b2;\n  t5 += v * b3;\n  t6 += v * b4;\n  t7 += v * b5;\n  t8 += v * b6;\n  t9 += v * b7;\n  t10 += v * b8;\n  t11 += v * b9;\n  t12 += v * b10;\n  t13 += v * b11;\n  t14 += v * b12;\n  t15 += v * b13;\n  t16 += v * b14;\n  t17 += v * b15;\n  v = a[3];\n  t3 += v * b0;\n  t4 += v * b1;\n  t5 += v * b2;\n  t6 += v * b3;\n  t7 += v * b4;\n  t8 += v * b5;\n  t9 += v * b6;\n  t10 += v * b7;\n  t11 += v * b8;\n  t12 += v * b9;\n  t13 += v * b10;\n  t14 += v * b11;\n  t15 += v * b12;\n  t16 += v * b13;\n  t17 += v * b14;\n  t18 += v * b15;\n  v = a[4];\n  t4 += v * b0;\n  t5 += v * b1;\n  t6 += v * b2;\n  t7 += v * b3;\n  t8 += v * b4;\n  t9 += v * b5;\n  t10 += v * b6;\n  t11 += v * b7;\n  t12 += v * b8;\n  t13 += v * b9;\n  t14 += v * b10;\n  t15 += v * b11;\n  t16 += v * b12;\n  t17 += v * b13;\n  t18 += v * b14;\n  t19 += v * b15;\n  v = a[5];\n  t5 += v * b0;\n  t6 += v * b1;\n  t7 += v * b2;\n  t8 += v * b3;\n  t9 += v * b4;\n  t10 += v * b5;\n  t11 += v * b6;\n  t12 += v * b7;\n  t13 += v * b8;\n  t14 += v * b9;\n  t15 += v * b10;\n  t16 += v * b11;\n  t17 += v * b12;\n  t18 += v * b13;\n  t19 += v * b14;\n  t20 += v * b15;\n  v = a[6];\n  t6 += v * b0;\n  t7 += v * b1;\n  t8 += v * b2;\n  t9 += v * b3;\n  t10 += v * b4;\n  t11 += v * b5;\n  t12 += v * b6;\n  t13 += v * b7;\n  t14 += v * b8;\n  t15 += v * b9;\n  t16 += v * b10;\n  t17 += v * b11;\n  t18 += v * b12;\n  t19 += v * b13;\n  t20 += v * b14;\n  t21 += v * b15;\n  v = a[7];\n  t7 += v * b0;\n  t8 += v * b1;\n  t9 += v * b2;\n  t10 += v * b3;\n  t11 += v * b4;\n  t12 += v * b5;\n  t13 += v * b6;\n  t14 += v * b7;\n  t15 += v * b8;\n  t16 += v * b9;\n  t17 += v * b10;\n  t18 += v * b11;\n  t19 += v * b12;\n  t20 += v * b13;\n  t21 += v * b14;\n  t22 += v * b15;\n  v = a[8];\n  t8 += v * b0;\n  t9 += v * b1;\n  t10 += v * b2;\n  t11 += v * b3;\n  t12 += v * b4;\n  t13 += v * b5;\n  t14 += v * b6;\n  t15 += v * b7;\n  t16 += v * b8;\n  t17 += v * b9;\n  t18 += v * b10;\n  t19 += v * b11;\n  t20 += v * b12;\n  t21 += v * b13;\n  t22 += v * b14;\n  t23 += v * b15;\n  v = a[9];\n  t9 += v * b0;\n  t10 += v * b1;\n  t11 += v * b2;\n  t12 += v * b3;\n  t13 += v * b4;\n  t14 += v * b5;\n  t15 += v * b6;\n  t16 += v * b7;\n  t17 += v * b8;\n  t18 += v * b9;\n  t19 += v * b10;\n  t20 += v * b11;\n  t21 += v * b12;\n  t22 += v * b13;\n  t23 += v * b14;\n  t24 += v * b15;\n  v = a[10];\n  t10 += v * b0;\n  t11 += v * b1;\n  t12 += v * b2;\n  t13 += v * b3;\n  t14 += v * b4;\n  t15 += v * b5;\n  t16 += v * b6;\n  t17 += v * b7;\n  t18 += v * b8;\n  t19 += v * b9;\n  t20 += v * b10;\n  t21 += v * b11;\n  t22 += v * b12;\n  t23 += v * b13;\n  t24 += v * b14;\n  t25 += v * b15;\n  v = a[11];\n  t11 += v * b0;\n  t12 += v * b1;\n  t13 += v * b2;\n  t14 += v * b3;\n  t15 += v * b4;\n  t16 += v * b5;\n  t17 += v * b6;\n  t18 += v * b7;\n  t19 += v * b8;\n  t20 += v * b9;\n  t21 += v * b10;\n  t22 += v * b11;\n  t23 += v * b12;\n  t24 += v * b13;\n  t25 += v * b14;\n  t26 += v * b15;\n  v = a[12];\n  t12 += v * b0;\n  t13 += v * b1;\n  t14 += v * b2;\n  t15 += v * b3;\n  t16 += v * b4;\n  t17 += v * b5;\n  t18 += v * b6;\n  t19 += v * b7;\n  t20 += v * b8;\n  t21 += v * b9;\n  t22 += v * b10;\n  t23 += v * b11;\n  t24 += v * b12;\n  t25 += v * b13;\n  t26 += v * b14;\n  t27 += v * b15;\n  v = a[13];\n  t13 += v * b0;\n  t14 += v * b1;\n  t15 += v * b2;\n  t16 += v * b3;\n  t17 += v * b4;\n  t18 += v * b5;\n  t19 += v * b6;\n  t20 += v * b7;\n  t21 += v * b8;\n  t22 += v * b9;\n  t23 += v * b10;\n  t24 += v * b11;\n  t25 += v * b12;\n  t26 += v * b13;\n  t27 += v * b14;\n  t28 += v * b15;\n  v = a[14];\n  t14 += v * b0;\n  t15 += v * b1;\n  t16 += v * b2;\n  t17 += v * b3;\n  t18 += v * b4;\n  t19 += v * b5;\n  t20 += v * b6;\n  t21 += v * b7;\n  t22 += v * b8;\n  t23 += v * b9;\n  t24 += v * b10;\n  t25 += v * b11;\n  t26 += v * b12;\n  t27 += v * b13;\n  t28 += v * b14;\n  t29 += v * b15;\n  v = a[15];\n  t15 += v * b0;\n  t16 += v * b1;\n  t17 += v * b2;\n  t18 += v * b3;\n  t19 += v * b4;\n  t20 += v * b5;\n  t21 += v * b6;\n  t22 += v * b7;\n  t23 += v * b8;\n  t24 += v * b9;\n  t25 += v * b10;\n  t26 += v * b11;\n  t27 += v * b12;\n  t28 += v * b13;\n  t29 += v * b14;\n  t30 += v * b15;\n\n  t0  += 38 * t16;\n  t1  += 38 * t17;\n  t2  += 38 * t18;\n  t3  += 38 * t19;\n  t4  += 38 * t20;\n  t5  += 38 * t21;\n  t6  += 38 * t22;\n  t7  += 38 * t23;\n  t8  += 38 * t24;\n  t9  += 38 * t25;\n  t10 += 38 * t26;\n  t11 += 38 * t27;\n  t12 += 38 * t28;\n  t13 += 38 * t29;\n  t14 += 38 * t30;\n  // t15 left as is\n\n  // first car\n  c = 1;\n  v =  t0 + c + 65535; c = Math.floor(v / 65536);  t0 = v - c * 65536;\n  v =  t1 + c + 65535; c = Math.floor(v / 65536);  t1 = v - c * 65536;\n  v =  t2 + c + 65535; c = Math.floor(v / 65536);  t2 = v - c * 65536;\n  v =  t3 + c + 65535; c = Math.floor(v / 65536);  t3 = v - c * 65536;\n  v =  t4 + c + 65535; c = Math.floor(v / 65536);  t4 = v - c * 65536;\n  v =  t5 + c + 65535; c = Math.floor(v / 65536);  t5 = v - c * 65536;\n  v =  t6 + c + 65535; c = Math.floor(v / 65536);  t6 = v - c * 65536;\n  v =  t7 + c + 65535; c = Math.floor(v / 65536);  t7 = v - c * 65536;\n  v =  t8 + c + 65535; c = Math.floor(v / 65536);  t8 = v - c * 65536;\n  v =  t9 + c + 65535; c = Math.floor(v / 65536);  t9 = v - c * 65536;\n  v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536;\n  v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536;\n  v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536;\n  v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536;\n  v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536;\n  v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536;\n  t0 += c-1 + 37 * (c-1);\n\n  // second car\n  c = 1;\n  v =  t0 + c + 65535; c = Math.floor(v / 65536);  t0 = v - c * 65536;\n  v =  t1 + c + 65535; c = Math.floor(v / 65536);  t1 = v - c * 65536;\n  v =  t2 + c + 65535; c = Math.floor(v / 65536);  t2 = v - c * 65536;\n  v =  t3 + c + 65535; c = Math.floor(v / 65536);  t3 = v - c * 65536;\n  v =  t4 + c + 65535; c = Math.floor(v / 65536);  t4 = v - c * 65536;\n  v =  t5 + c + 65535; c = Math.floor(v / 65536);  t5 = v - c * 65536;\n  v =  t6 + c + 65535; c = Math.floor(v / 65536);  t6 = v - c * 65536;\n  v =  t7 + c + 65535; c = Math.floor(v / 65536);  t7 = v - c * 65536;\n  v =  t8 + c + 65535; c = Math.floor(v / 65536);  t8 = v - c * 65536;\n  v =  t9 + c + 65535; c = Math.floor(v / 65536);  t9 = v - c * 65536;\n  v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536;\n  v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536;\n  v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536;\n  v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536;\n  v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536;\n  v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536;\n  t0 += c-1 + 37 * (c-1);\n\n  o[ 0] = t0;\n  o[ 1] = t1;\n  o[ 2] = t2;\n  o[ 3] = t3;\n  o[ 4] = t4;\n  o[ 5] = t5;\n  o[ 6] = t6;\n  o[ 7] = t7;\n  o[ 8] = t8;\n  o[ 9] = t9;\n  o[10] = t10;\n  o[11] = t11;\n  o[12] = t12;\n  o[13] = t13;\n  o[14] = t14;\n  o[15] = t15;\n}\n\nfunction S(o, a) {\n  M(o, a, a);\n}\n\nfunction inv25519(o, i) {\n  var c = gf();\n  var a;\n  for (a = 0; a < 16; a++) c[a] = i[a];\n  for (a = 253; a >= 0; a--) {\n    S(c, c);\n    if(a !== 2 && a !== 4) M(c, c, i);\n  }\n  for (a = 0; a < 16; a++) o[a] = c[a];\n}\n\nfunction pow2523(o, i) {\n  var c = gf();\n  var a;\n  for (a = 0; a < 16; a++) c[a] = i[a];\n  for (a = 250; a >= 0; a--) {\n      S(c, c);\n      if(a !== 1) M(c, c, i);\n  }\n  for (a = 0; a < 16; a++) o[a] = c[a];\n}\n\nfunction crypto_scalarmult(q, n, p) {\n  var z = new Uint8Array(32);\n  var x = new Float64Array(80), r, i;\n  var a = gf(), b = gf(), c = gf(),\n      d = gf(), e = gf(), f = gf();\n  for (i = 0; i < 31; i++) z[i] = n[i];\n  z[31]=(n[31]&127)|64;\n  z[0]&=248;\n  unpack25519(x,p);\n  for (i = 0; i < 16; i++) {\n    b[i]=x[i];\n    d[i]=a[i]=c[i]=0;\n  }\n  a[0]=d[0]=1;\n  for (i=254; i>=0; --i) {\n    r=(z[i>>>3]>>>(i&7))&1;\n    sel25519(a,b,r);\n    sel25519(c,d,r);\n    A(e,a,c);\n    Z(a,a,c);\n    A(c,b,d);\n    Z(b,b,d);\n    S(d,e);\n    S(f,a);\n    M(a,c,a);\n    M(c,b,e);\n    A(e,a,c);\n    Z(a,a,c);\n    S(b,a);\n    Z(c,d,f);\n    M(a,c,_121665);\n    A(a,a,d);\n    M(c,c,a);\n    M(a,d,f);\n    M(d,b,x);\n    S(b,e);\n    sel25519(a,b,r);\n    sel25519(c,d,r);\n  }\n  for (i = 0; i < 16; i++) {\n    x[i+16]=a[i];\n    x[i+32]=c[i];\n    x[i+48]=b[i];\n    x[i+64]=d[i];\n  }\n  var x32 = x.subarray(32);\n  var x16 = x.subarray(16);\n  inv25519(x32,x32);\n  M(x16,x16,x32);\n  pack25519(q,x16);\n  return 0;\n}\n\nfunction crypto_scalarmult_base(q, n) {\n  return crypto_scalarmult(q, n, _9);\n}\n\nfunction crypto_box_keypair(y, x) {\n  randombytes(x, 32);\n  return crypto_scalarmult_base(y, x);\n}\n\nfunction crypto_box_beforenm(k, y, x) {\n  var s = new Uint8Array(32);\n  crypto_scalarmult(s, x, y);\n  return crypto_core_hsalsa20(k, _0, s, sigma);\n}\n\nvar crypto_box_afternm = crypto_secretbox;\nvar crypto_box_open_afternm = crypto_secretbox_open;\n\nfunction crypto_box(c, m, d, n, y, x) {\n  var k = new Uint8Array(32);\n  crypto_box_beforenm(k, y, x);\n  return crypto_box_afternm(c, m, d, n, k);\n}\n\nfunction crypto_box_open(m, c, d, n, y, x) {\n  var k = new Uint8Array(32);\n  crypto_box_beforenm(k, y, x);\n  return crypto_box_open_afternm(m, c, d, n, k);\n}\n\nvar K = [\n  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,\n  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,\n  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,\n  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,\n  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,\n  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,\n  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,\n  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,\n  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,\n  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,\n  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,\n  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,\n  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,\n  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,\n  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,\n  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,\n  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,\n  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,\n  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,\n  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,\n  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,\n  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,\n  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,\n  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,\n  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,\n  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,\n  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,\n  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,\n  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,\n  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,\n  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,\n  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,\n  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,\n  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,\n  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,\n  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,\n  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,\n  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,\n  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,\n  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817\n];\n\nfunction crypto_hashblocks_hl(hh, hl, m, n) {\n  var wh = new Int32Array(16), wl = new Int32Array(16),\n      bh0, bh1, bh2, bh3, bh4, bh5, bh6, bh7,\n      bl0, bl1, bl2, bl3, bl4, bl5, bl6, bl7,\n      th, tl, i, j, h, l, a, b, c, d;\n\n  var ah0 = hh[0],\n      ah1 = hh[1],\n      ah2 = hh[2],\n      ah3 = hh[3],\n      ah4 = hh[4],\n      ah5 = hh[5],\n      ah6 = hh[6],\n      ah7 = hh[7],\n\n      al0 = hl[0],\n      al1 = hl[1],\n      al2 = hl[2],\n      al3 = hl[3],\n      al4 = hl[4],\n      al5 = hl[5],\n      al6 = hl[6],\n      al7 = hl[7];\n\n  var pos = 0;\n  while (n >= 128) {\n    for (i = 0; i < 16; i++) {\n      j = 8 * i + pos;\n      wh[i] = (m[j+0] << 24) | (m[j+1] << 16) | (m[j+2] << 8) | m[j+3];\n      wl[i] = (m[j+4] << 24) | (m[j+5] << 16) | (m[j+6] << 8) | m[j+7];\n    }\n    for (i = 0; i < 80; i++) {\n      bh0 = ah0;\n      bh1 = ah1;\n      bh2 = ah2;\n      bh3 = ah3;\n      bh4 = ah4;\n      bh5 = ah5;\n      bh6 = ah6;\n      bh7 = ah7;\n\n      bl0 = al0;\n      bl1 = al1;\n      bl2 = al2;\n      bl3 = al3;\n      bl4 = al4;\n      bl5 = al5;\n      bl6 = al6;\n      bl7 = al7;\n\n      // add\n      h = ah7;\n      l = al7;\n\n      a = l & 0xffff; b = l >>> 16;\n      c = h & 0xffff; d = h >>> 16;\n\n      // Sigma1\n      h = ((ah4 >>> 14) | (al4 << (32-14))) ^ ((ah4 >>> 18) | (al4 << (32-18))) ^ ((al4 >>> (41-32)) | (ah4 << (32-(41-32))));\n      l = ((al4 >>> 14) | (ah4 << (32-14))) ^ ((al4 >>> 18) | (ah4 << (32-18))) ^ ((ah4 >>> (41-32)) | (al4 << (32-(41-32))));\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // Ch\n      h = (ah4 & ah5) ^ (~ah4 & ah6);\n      l = (al4 & al5) ^ (~al4 & al6);\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // K\n      h = K[i*2];\n      l = K[i*2+1];\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // w\n      h = wh[i%16];\n      l = wl[i%16];\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      b += a >>> 16;\n      c += b >>> 16;\n      d += c >>> 16;\n\n      th = c & 0xffff | d << 16;\n      tl = a & 0xffff | b << 16;\n\n      // add\n      h = th;\n      l = tl;\n\n      a = l & 0xffff; b = l >>> 16;\n      c = h & 0xffff; d = h >>> 16;\n\n      // Sigma0\n      h = ((ah0 >>> 28) | (al0 << (32-28))) ^ ((al0 >>> (34-32)) | (ah0 << (32-(34-32)))) ^ ((al0 >>> (39-32)) | (ah0 << (32-(39-32))));\n      l = ((al0 >>> 28) | (ah0 << (32-28))) ^ ((ah0 >>> (34-32)) | (al0 << (32-(34-32)))) ^ ((ah0 >>> (39-32)) | (al0 << (32-(39-32))));\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // Maj\n      h = (ah0 & ah1) ^ (ah0 & ah2) ^ (ah1 & ah2);\n      l = (al0 & al1) ^ (al0 & al2) ^ (al1 & al2);\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      b += a >>> 16;\n      c += b >>> 16;\n      d += c >>> 16;\n\n      bh7 = (c & 0xffff) | (d << 16);\n      bl7 = (a & 0xffff) | (b << 16);\n\n      // add\n      h = bh3;\n      l = bl3;\n\n      a = l & 0xffff; b = l >>> 16;\n      c = h & 0xffff; d = h >>> 16;\n\n      h = th;\n      l = tl;\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      b += a >>> 16;\n      c += b >>> 16;\n      d += c >>> 16;\n\n      bh3 = (c & 0xffff) | (d << 16);\n      bl3 = (a & 0xffff) | (b << 16);\n\n      ah1 = bh0;\n      ah2 = bh1;\n      ah3 = bh2;\n      ah4 = bh3;\n      ah5 = bh4;\n      ah6 = bh5;\n      ah7 = bh6;\n      ah0 = bh7;\n\n      al1 = bl0;\n      al2 = bl1;\n      al3 = bl2;\n      al4 = bl3;\n      al5 = bl4;\n      al6 = bl5;\n      al7 = bl6;\n      al0 = bl7;\n\n      if (i%16 === 15) {\n        for (j = 0; j < 16; j++) {\n          // add\n          h = wh[j];\n          l = wl[j];\n\n          a = l & 0xffff; b = l >>> 16;\n          c = h & 0xffff; d = h >>> 16;\n\n          h = wh[(j+9)%16];\n          l = wl[(j+9)%16];\n\n          a += l & 0xffff; b += l >>> 16;\n          c += h & 0xffff; d += h >>> 16;\n\n          // sigma0\n          th = wh[(j+1)%16];\n          tl = wl[(j+1)%16];\n          h = ((th >>> 1) | (tl << (32-1))) ^ ((th >>> 8) | (tl << (32-8))) ^ (th >>> 7);\n          l = ((tl >>> 1) | (th << (32-1))) ^ ((tl >>> 8) | (th << (32-8))) ^ ((tl >>> 7) | (th << (32-7)));\n\n          a += l & 0xffff; b += l >>> 16;\n          c += h & 0xffff; d += h >>> 16;\n\n          // sigma1\n          th = wh[(j+14)%16];\n          tl = wl[(j+14)%16];\n          h = ((th >>> 19) | (tl << (32-19))) ^ ((tl >>> (61-32)) | (th << (32-(61-32)))) ^ (th >>> 6);\n          l = ((tl >>> 19) | (th << (32-19))) ^ ((th >>> (61-32)) | (tl << (32-(61-32)))) ^ ((tl >>> 6) | (th << (32-6)));\n\n          a += l & 0xffff; b += l >>> 16;\n          c += h & 0xffff; d += h >>> 16;\n\n          b += a >>> 16;\n          c += b >>> 16;\n          d += c >>> 16;\n\n          wh[j] = (c & 0xffff) | (d << 16);\n          wl[j] = (a & 0xffff) | (b << 16);\n        }\n      }\n    }\n\n    // add\n    h = ah0;\n    l = al0;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[0];\n    l = hl[0];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[0] = ah0 = (c & 0xffff) | (d << 16);\n    hl[0] = al0 = (a & 0xffff) | (b << 16);\n\n    h = ah1;\n    l = al1;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[1];\n    l = hl[1];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[1] = ah1 = (c & 0xffff) | (d << 16);\n    hl[1] = al1 = (a & 0xffff) | (b << 16);\n\n    h = ah2;\n    l = al2;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[2];\n    l = hl[2];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[2] = ah2 = (c & 0xffff) | (d << 16);\n    hl[2] = al2 = (a & 0xffff) | (b << 16);\n\n    h = ah3;\n    l = al3;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[3];\n    l = hl[3];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[3] = ah3 = (c & 0xffff) | (d << 16);\n    hl[3] = al3 = (a & 0xffff) | (b << 16);\n\n    h = ah4;\n    l = al4;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[4];\n    l = hl[4];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[4] = ah4 = (c & 0xffff) | (d << 16);\n    hl[4] = al4 = (a & 0xffff) | (b << 16);\n\n    h = ah5;\n    l = al5;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[5];\n    l = hl[5];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[5] = ah5 = (c & 0xffff) | (d << 16);\n    hl[5] = al5 = (a & 0xffff) | (b << 16);\n\n    h = ah6;\n    l = al6;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[6];\n    l = hl[6];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[6] = ah6 = (c & 0xffff) | (d << 16);\n    hl[6] = al6 = (a & 0xffff) | (b << 16);\n\n    h = ah7;\n    l = al7;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[7];\n    l = hl[7];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[7] = ah7 = (c & 0xffff) | (d << 16);\n    hl[7] = al7 = (a & 0xffff) | (b << 16);\n\n    pos += 128;\n    n -= 128;\n  }\n\n  return n;\n}\n\nfunction crypto_hash(out, m, n) {\n  var hh = new Int32Array(8),\n      hl = new Int32Array(8),\n      x = new Uint8Array(256),\n      i, b = n;\n\n  hh[0] = 0x6a09e667;\n  hh[1] = 0xbb67ae85;\n  hh[2] = 0x3c6ef372;\n  hh[3] = 0xa54ff53a;\n  hh[4] = 0x510e527f;\n  hh[5] = 0x9b05688c;\n  hh[6] = 0x1f83d9ab;\n  hh[7] = 0x5be0cd19;\n\n  hl[0] = 0xf3bcc908;\n  hl[1] = 0x84caa73b;\n  hl[2] = 0xfe94f82b;\n  hl[3] = 0x5f1d36f1;\n  hl[4] = 0xade682d1;\n  hl[5] = 0x2b3e6c1f;\n  hl[6] = 0xfb41bd6b;\n  hl[7] = 0x137e2179;\n\n  crypto_hashblocks_hl(hh, hl, m, n);\n  n %= 128;\n\n  for (i = 0; i < n; i++) x[i] = m[b-n+i];\n  x[n] = 128;\n\n  n = 256-128*(n<112?1:0);\n  x[n-9] = 0;\n  ts64(x, n-8,  (b / 0x20000000) | 0, b << 3);\n  crypto_hashblocks_hl(hh, hl, x, n);\n\n  for (i = 0; i < 8; i++) ts64(out, 8*i, hh[i], hl[i]);\n\n  return 0;\n}\n\nfunction add(p, q) {\n  var a = gf(), b = gf(), c = gf(),\n      d = gf(), e = gf(), f = gf(),\n      g = gf(), h = gf(), t = gf();\n\n  Z(a, p[1], p[0]);\n  Z(t, q[1], q[0]);\n  M(a, a, t);\n  A(b, p[0], p[1]);\n  A(t, q[0], q[1]);\n  M(b, b, t);\n  M(c, p[3], q[3]);\n  M(c, c, D2);\n  M(d, p[2], q[2]);\n  A(d, d, d);\n  Z(e, b, a);\n  Z(f, d, c);\n  A(g, d, c);\n  A(h, b, a);\n\n  M(p[0], e, f);\n  M(p[1], h, g);\n  M(p[2], g, f);\n  M(p[3], e, h);\n}\n\nfunction cswap(p, q, b) {\n  var i;\n  for (i = 0; i < 4; i++) {\n    sel25519(p[i], q[i], b);\n  }\n}\n\nfunction pack(r, p) {\n  var tx = gf(), ty = gf(), zi = gf();\n  inv25519(zi, p[2]);\n  M(tx, p[0], zi);\n  M(ty, p[1], zi);\n  pack25519(r, ty);\n  r[31] ^= par25519(tx) << 7;\n}\n\nfunction scalarmult(p, q, s) {\n  var b, i;\n  set25519(p[0], gf0);\n  set25519(p[1], gf1);\n  set25519(p[2], gf1);\n  set25519(p[3], gf0);\n  for (i = 255; i >= 0; --i) {\n    b = (s[(i/8)|0] >> (i&7)) & 1;\n