{"ast":null,"code":"/**\n * SHA2 hash function. A.k.a. sha256, sha384, sha512, sha512_224, sha512_256.\n * SHA256 is the fastest hash implementable in JS, even faster than Blake3.\n * Check out [RFC 4634](https://datatracker.ietf.org/doc/html/rfc4634) and\n * [FIPS 180-4](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf).\n * @module\n */\nimport { Chi, HashMD, Maj, SHA224_IV, SHA256_IV, SHA384_IV, SHA512_IV } from \"./_md.js\";\nimport * as u64 from \"./_u64.js\";\nimport { clean, createHasher, rotr } from \"./utils.js\";\n/**\n * Round constants:\n * First 32 bits of fractional parts of the cube roots of the first 64 primes 2..311)\n */\n// prettier-ignore\nconst SHA256_K = /* @__PURE__ */Uint32Array.from([0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2]);\n/** Reusable temporary buffer. \"W\" comes straight from spec. */\nconst SHA256_W = /* @__PURE__ */new Uint32Array(64);\nexport class SHA256 extends HashMD {\n  constructor(outputLen = 32) {\n    super(64, outputLen, 8, false);\n    // We cannot use array here since array allows indexing by variable\n    // which means optimizer/compiler cannot use registers.\n    this.A = SHA256_IV[0] | 0;\n    this.B = SHA256_IV[1] | 0;\n    this.C = SHA256_IV[2] | 0;\n    this.D = SHA256_IV[3] | 0;\n    this.E = SHA256_IV[4] | 0;\n    this.F = SHA256_IV[5] | 0;\n    this.G = SHA256_IV[6] | 0;\n    this.H = SHA256_IV[7] | 0;\n  }\n  get() {\n    const {\n      A,\n      B,\n      C,\n      D,\n      E,\n      F,\n      G,\n      H\n    } = this;\n    return [A, B, C, D, E, F, G, H];\n  }\n  // prettier-ignore\n  set(A, B, C, D, E, F, G, H) {\n    this.A = A | 0;\n    this.B = B | 0;\n    this.C = C | 0;\n    this.D = D | 0;\n    this.E = E | 0;\n    this.F = F | 0;\n    this.G = G | 0;\n    this.H = H | 0;\n  }\n  process(view, offset) {\n    // Extend the first 16 words into the remaining 48 words w[16..63] of the message schedule array\n    for (let i = 0; i < 16; i++, offset += 4) SHA256_W[i] = view.getUint32(offset, false);\n    for (let i = 16; i < 64; i++) {\n      const W15 = SHA256_W[i - 15];\n      const W2 = SHA256_W[i - 2];\n      const s0 = rotr(W15, 7) ^ rotr(W15, 18) ^ W15 >>> 3;\n      const s1 = rotr(W2, 17) ^ rotr(W2, 19) ^ W2 >>> 10;\n      SHA256_W[i] = s1 + SHA256_W[i - 7] + s0 + SHA256_W[i - 16] | 0;\n    }\n    // Compression function main loop, 64 rounds\n    let {\n      A,\n      B,\n      C,\n      D,\n      E,\n      F,\n      G,\n      H\n    } = this;\n    for (let i = 0; i < 64; i++) {\n      const sigma1 = rotr(E, 6) ^ rotr(E, 11) ^ rotr(E, 25);\n      const T1 = H + sigma1 + Chi(E, F, G) + SHA256_K[i] + SHA256_W[i] | 0;\n      const sigma0 = rotr(A, 2) ^ rotr(A, 13) ^ rotr(A, 22);\n      const T2 = sigma0 + Maj(A, B, C) | 0;\n      H = G;\n      G = F;\n      F = E;\n      E = D + T1 | 0;\n      D = C;\n      C = B;\n      B = A;\n      A = T1 + T2 | 0;\n    }\n    // Add the compressed chunk to the current hash value\n    A = A + this.A | 0;\n    B = B + this.B | 0;\n    C = C + this.C | 0;\n    D = D + this.D | 0;\n    E = E + this.E | 0;\n    F = F + this.F | 0;\n    G = G + this.G | 0;\n    H = H + this.H | 0;\n    this.set(A, B, C, D, E, F, G, H);\n  }\n  roundClean() {\n    clean(SHA256_W);\n  }\n  destroy() {\n    this.set(0, 0, 0, 0, 0, 0, 0, 0);\n    clean(this.buffer);\n  }\n}\nexport class SHA224 extends SHA256 {\n  constructor() {\n    super(28);\n    this.A = SHA224_IV[0] | 0;\n    this.B = SHA224_IV[1] | 0;\n    this.C = SHA224_IV[2] | 0;\n    this.D = SHA224_IV[3] | 0;\n    this.E = SHA224_IV[4] | 0;\n    this.F = SHA224_IV[5] | 0;\n    this.G = SHA224_IV[6] | 0;\n    this.H = SHA224_IV[7] | 0;\n  }\n}\n// SHA2-512 is slower than sha256 in js because u64 operations are slow.\n// Round contants\n// First 32 bits of the fractional parts of the cube roots of the first 80 primes 2..409\n// prettier-ignore\nconst K512 = /* @__PURE__ */(() => u64.split(['0x428a2f98d728ae22', '0x7137449123ef65cd', '0xb5c0fbcfec4d3b2f', '0xe9b5dba58189dbbc', '0x3956c25bf348b538', '0x59f111f1b605d019', '0x923f82a4af194f9b', '0xab1c5ed5da6d8118', '0xd807aa98a3030242', '0x12835b0145706fbe', '0x243185be4ee4b28c', '0x550c7dc3d5ffb4e2', '0x72be5d74f27b896f', '0x80deb1fe3b1696b1', '0x9bdc06a725c71235', '0xc19bf174cf692694', '0xe49b69c19ef14ad2', '0xefbe4786384f25e3', '0x0fc19dc68b8cd5b5', '0x240ca1cc77ac9c65', '0x2de92c6f592b0275', '0x4a7484aa6ea6e483', '0x5cb0a9dcbd41fbd4', '0x76f988da831153b5', '0x983e5152ee66dfab', '0xa831c66d2db43210', '0xb00327c898fb213f', '0xbf597fc7beef0ee4', '0xc6e00bf33da88fc2', '0xd5a79147930aa725', '0x06ca6351e003826f', '0x142929670a0e6e70', '0x27b70a8546d22ffc', '0x2e1b21385c26c926', '0x4d2c6dfc5ac42aed', '0x53380d139d95b3df', '0x650a73548baf63de', '0x766a0abb3c77b2a8', '0x81c2c92e47edaee6', '0x92722c851482353b', '0xa2bfe8a14cf10364', '0xa81a664bbc423001', '0xc24b8b70d0f89791', '0xc76c51a30654be30', '0xd192e819d6ef5218', '0xd69906245565a910', '0xf40e35855771202a', '0x106aa07032bbd1b8', '0x19a4c116b8d2d0c8', '0x1e376c085141ab53', '0x2748774cdf8eeb99', '0x34b0bcb5e19b48a8', '0x391c0cb3c5c95a63', '0x4ed8aa4ae3418acb', '0x5b9cca4f7763e373', '0x682e6ff3d6b2b8a3', '0x748f82ee5defb2fc', '0x78a5636f43172f60', '0x84c87814a1f0ab72', '0x8cc702081a6439ec', '0x90befffa23631e28', '0xa4506cebde82bde9', '0xbef9a3f7b2c67915', '0xc67178f2e372532b', '0xca273eceea26619c', '0xd186b8c721c0c207', '0xeada7dd6cde0eb1e', '0xf57d4f7fee6ed178', '0x06f067aa72176fba', '0x0a637dc5a2c898a6', '0x113f9804bef90dae', '0x1b710b35131c471b', '0x28db77f523047d84', '0x32caab7b40c72493', '0x3c9ebe0a15c9bebc', '0x431d67c49c100d4c', '0x4cc5d4becb3e42b6', '0x597f299cfc657e2a', '0x5fcb6fab3ad6faec', '0x6c44198c4a475817'].map(n => BigInt(n))))();\nconst SHA512_Kh = /* @__PURE__ */(() => K512[0])();\nconst SHA512_Kl = /* @__PURE__ */(() => K512[1])();\n// Reusable temporary buffers\nconst SHA512_W_H = /* @__PURE__ */new Uint32Array(80);\nconst SHA512_W_L = /* @__PURE__ */new Uint32Array(80);\nexport class SHA512 extends HashMD {\n  constructor(outputLen = 64) {\n    super(128, outputLen, 16, false);\n    // We cannot use array here since array allows indexing by variable\n    // which means optimizer/compiler cannot use registers.\n    // h -- high 32 bits, l -- low 32 bits\n    this.Ah = SHA512_IV[0] | 0;\n    this.Al = SHA512_IV[1] | 0;\n    this.Bh = SHA512_IV[2] | 0;\n    this.Bl = SHA512_IV[3] | 0;\n    this.Ch = SHA512_IV[4] | 0;\n    this.Cl = SHA512_IV[5] | 0;\n    this.Dh = SHA512_IV[6] | 0;\n    this.Dl = SHA512_IV[7] | 0;\n    this.Eh = SHA512_IV[8] | 0;\n    this.El = SHA512_IV[9] | 0;\n    this.Fh = SHA512_IV[10] | 0;\n    this.Fl = SHA512_IV[11] | 0;\n    this.Gh = SHA512_IV[12] | 0;\n    this.Gl = SHA512_IV[13] | 0;\n    this.Hh = SHA512_IV[14] | 0;\n    this.Hl = SHA512_IV[15] | 0;\n  }\n  // prettier-ignore\n  get() {\n    const {\n      Ah,\n      Al,\n      Bh,\n      Bl,\n      Ch,\n      Cl,\n      Dh,\n      Dl,\n      Eh,\n      El,\n      Fh,\n      Fl,\n      Gh,\n      Gl,\n      Hh,\n      Hl\n    } = this;\n    return [Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl];\n  }\n  // prettier-ignore\n  set(Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl) {\n    this.Ah = Ah | 0;\n    this.Al = Al | 0;\n    this.Bh = Bh | 0;\n    this.Bl = Bl | 0;\n    this.Ch = Ch | 0;\n    this.Cl = Cl | 0;\n    this.Dh = Dh | 0;\n    this.Dl = Dl | 0;\n    this.Eh = Eh | 0;\n    this.El = El | 0;\n    this.Fh = Fh | 0;\n    this.Fl = Fl | 0;\n    this.Gh = Gh | 0;\n    this.Gl = Gl | 0;\n    this.Hh = Hh | 0;\n    this.Hl = Hl | 0;\n  }\n  process(view, offset) {\n    // Extend the first 16 words into the remaining 64 words w[16..79] of the message schedule array\n    for (let i = 0; i < 16; i++, offset += 4) {\n      SHA512_W_H[i] = view.getUint32(offset);\n      SHA512_W_L[i] = view.getUint32(offset += 4);\n    }\n    for (let i = 16; i < 80; i++) {\n      // s0 := (w[i-15] rightrotate 1) xor (w[i-15] rightrotate 8) xor (w[i-15] rightshift 7)\n      const W15h = SHA512_W_H[i - 15] | 0;\n      const W15l = SHA512_W_L[i - 15] | 0;\n      const s0h = u64.rotrSH(W15h, W15l, 1) ^ u64.rotrSH(W15h, W15l, 8) ^ u64.shrSH(W15h, W15l, 7);\n      const s0l = u64.rotrSL(W15h, W15l, 1) ^ u64.rotrSL(W15h, W15l, 8) ^ u64.shrSL(W15h, W15l, 7);\n      // s1 := (w[i-2] rightrotate 19) xor (w[i-2] rightrotate 61) xor (w[i-2] rightshift 6)\n      const W2h = SHA512_W_H[i - 2] | 0;\n      const W2l = SHA512_W_L[i - 2] | 0;\n      const s1h = u64.rotrSH(W2h, W2l, 19) ^ u64.rotrBH(W2h, W2l, 61) ^ u64.shrSH(W2h, W2l, 6);\n      const s1l = u64.rotrSL(W2h, W2l, 19) ^ u64.rotrBL(W2h, W2l, 61) ^ u64.shrSL(W2h, W2l, 6);\n      // SHA256_W[i] = s0 + s1 + SHA256_W[i - 7] + SHA256_W[i - 16];\n      const SUMl = u64.add4L(s0l, s1l, SHA512_W_L[i - 7], SHA512_W_L[i - 16]);\n      const SUMh = u64.add4H(SUMl, s0h, s1h, SHA512_W_H[i - 7], SHA512_W_H[i - 16]);\n      SHA512_W_H[i] = SUMh | 0;\n      SHA512_W_L[i] = SUMl | 0;\n    }\n    let {\n      Ah,\n      Al,\n      Bh,\n      Bl,\n      Ch,\n      Cl,\n      Dh,\n      Dl,\n      Eh,\n      El,\n      Fh,\n      Fl,\n      Gh,\n      Gl,\n      Hh,\n      Hl\n    } = this;\n    // Compression function main loop, 80 rounds\n    for (let i = 0; i < 80; i++) {\n      // S1 := (e rightrotate 14) xor (e rightrotate 18) xor (e rightrotate 41)\n      const sigma1h = u64.rotrSH(Eh, El, 14) ^ u64.rotrSH(Eh, El, 18) ^ u64.rotrBH(Eh, El, 41);\n      const sigma1l = u64.rotrSL(Eh, El, 14) ^ u64.rotrSL(Eh, El, 18) ^ u64.rotrBL(Eh, El, 41);\n      //const T1 = (H + sigma1 + Chi(E, F, G) + SHA256_K[i] + SHA256_W[i]) | 0;\n      const CHIh = Eh & Fh ^ ~Eh & Gh;\n      const CHIl = El & Fl ^ ~El & Gl;\n      // T1 = H + sigma1 + Chi(E, F, G) + SHA512_K[i] + SHA512_W[i]\n      // prettier-ignore\n      const T1ll = u64.add5L(Hl, sigma1l, CHIl, SHA512_Kl[i], SHA512_W_L[i]);\n      const T1h = u64.add5H(T1ll, Hh, sigma1h, CHIh, SHA512_Kh[i], SHA512_W_H[i]);\n      const T1l = T1ll | 0;\n      // S0 := (a rightrotate 28) xor (a rightrotate 34) xor (a rightrotate 39)\n      const sigma0h = u64.rotrSH(Ah, Al, 28) ^ u64.rotrBH(Ah, Al, 34) ^ u64.rotrBH(Ah, Al, 39);\n      const sigma0l = u64.rotrSL(Ah, Al, 28) ^ u64.rotrBL(Ah, Al, 34) ^ u64.rotrBL(Ah, Al, 39);\n      const MAJh = Ah & Bh ^ Ah & Ch ^ Bh & Ch;\n      const MAJl = Al & Bl ^ Al & Cl ^ Bl & Cl;\n      Hh = Gh | 0;\n      Hl = Gl | 0;\n      Gh = Fh | 0;\n      Gl = Fl | 0;\n      Fh = Eh | 0;\n      Fl = El | 0;\n      ({\n        h: Eh,\n        l: El\n      } = u64.add(Dh | 0, Dl | 0, T1h | 0, T1l | 0));\n      Dh = Ch | 0;\n      Dl = Cl | 0;\n      Ch = Bh | 0;\n      Cl = Bl | 0;\n      Bh = Ah | 0;\n      Bl = Al | 0;\n      const All = u64.add3L(T1l, sigma0l, MAJl);\n      Ah = u64.add3H(All, T1h, sigma0h, MAJh);\n      Al = All | 0;\n    }\n    // Add the compressed chunk to the current hash value\n    ({\n      h: Ah,\n      l: Al\n    } = u64.add(this.Ah | 0, this.Al | 0, Ah | 0, Al | 0));\n    ({\n      h: Bh,\n      l: Bl\n    } = u64.add(this.Bh | 0, this.Bl | 0, Bh | 0, Bl | 0));\n    ({\n      h: Ch,\n      l: Cl\n    } = u64.add(this.Ch | 0, this.Cl | 0, Ch | 0, Cl | 0));\n    ({\n      h: Dh,\n      l: Dl\n    } = u64.add(this.Dh | 0, this.Dl | 0, Dh | 0, Dl | 0));\n    ({\n      h: Eh,\n      l: El\n    } = u64.add(this.Eh | 0, this.El | 0, Eh | 0, El | 0));\n    ({\n      h: Fh,\n      l: Fl\n    } = u64.add(this.Fh | 0, this.Fl | 0, Fh | 0, Fl | 0));\n    ({\n      h: Gh,\n      l: Gl\n    } = u64.add(this.Gh | 0, this.Gl | 0, Gh | 0, Gl | 0));\n    ({\n      h: Hh,\n      l: Hl\n    } = u64.add(this.Hh | 0, this.Hl | 0, Hh | 0, Hl | 0));\n    this.set(Ah, Al, Bh, Bl, Ch, Cl, Dh, Dl, Eh, El, Fh, Fl, Gh, Gl, Hh, Hl);\n  }\n  roundClean() {\n    clean(SHA512_W_H, SHA512_W_L);\n  }\n  destroy() {\n    clean(this.buffer);\n    this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);\n  }\n}\nexport class SHA384 extends SHA512 {\n  constructor() {\n    super(48);\n    this.Ah = SHA384_IV[0] | 0;\n    this.Al = SHA384_IV[1] | 0;\n    this.Bh = SHA384_IV[2] | 0;\n    this.Bl = SHA384_IV[3] | 0;\n    this.Ch = SHA384_IV[4] | 0;\n    this.Cl = SHA384_IV[5] | 0;\n    this.Dh = SHA384_IV[6] | 0;\n    this.Dl = SHA384_IV[7] | 0;\n    this.Eh = SHA384_IV[8] | 0;\n    this.El = SHA384_IV[9] | 0;\n    this.Fh = SHA384_IV[10] | 0;\n    this.Fl = SHA384_IV[11] | 0;\n    this.Gh = SHA384_IV[12] | 0;\n    this.Gl = SHA384_IV[13] | 0;\n    this.Hh = SHA384_IV[14] | 0;\n    this.Hl = SHA384_IV[15] | 0;\n  }\n}\n/**\n * Truncated SHA512/256 and SHA512/224.\n * SHA512_IV is XORed with 0xa5a5a5a5a5a5a5a5, then used as \"intermediary\" IV of SHA512/t.\n * Then t hashes string to produce result IV.\n * See `test/misc/sha2-gen-iv.js`.\n */\n/** SHA512/224 IV */\nconst T224_IV = /* @__PURE__ */Uint32Array.from([0x8c3d37c8, 0x19544da2, 0x73e19966, 0x89dcd4d6, 0x1dfab7ae, 0x32ff9c82, 0x679dd514, 0x582f9fcf, 0x0f6d2b69, 0x7bd44da8, 0x77e36f73, 0x04c48942, 0x3f9d85a8, 0x6a1d36c8, 0x1112e6ad, 0x91d692a1]);\n/** SHA512/256 IV */\nconst T256_IV = /* @__PURE__ */Uint32Array.from([0x22312194, 0xfc2bf72c, 0x9f555fa3, 0xc84c64c2, 0x2393b86b, 0x6f53b151, 0x96387719, 0x5940eabd, 0x96283ee2, 0xa88effe3, 0xbe5e1e25, 0x53863992, 0x2b0199fc, 0x2c85b8aa, 0x0eb72ddc, 0x81c52ca2]);\nexport class SHA512_224 extends SHA512 {\n  constructor() {\n    super(28);\n    this.Ah = T224_IV[0] | 0;\n    this.Al = T224_IV[1] | 0;\n    this.Bh = T224_IV[2] | 0;\n    this.Bl = T224_IV[3] | 0;\n    this.Ch = T224_IV[4] | 0;\n    this.Cl = T224_IV[5] | 0;\n    this.Dh = T224_IV[6] | 0;\n    this.Dl = T224_IV[7] | 0;\n    this.Eh = T224_IV[8] | 0;\n    this.El = T224_IV[9] | 0;\n    this.Fh = T224_IV[10] | 0;\n    this.Fl = T224_IV[11] | 0;\n    this.Gh = T224_IV[12] | 0;\n    this.Gl = T224_IV[13] | 0;\n    this.Hh = T224_IV[14] | 0;\n    this.Hl = T224_IV[15] | 0;\n  }\n}\nexport class SHA512_256 extends SHA512 {\n  constructor() {\n    super(32);\n    this.Ah = T256_IV[0] | 0;\n    this.Al = T256_IV[1] | 0;\n    this.Bh = T256_IV[2] | 0;\n    this.Bl = T256_IV[3] | 0;\n    this.Ch = T256_IV[4] | 0;\n    this.Cl = T256_IV[5] | 0;\n    this.Dh = T256_IV[6] | 0;\n    this.Dl = T256_IV[7] | 0;\n    this.Eh = T256_IV[8] | 0;\n    this.El = T256_IV[9] | 0;\n    this.Fh = T256_IV[10] | 0;\n    this.Fl = T256_IV[11] | 0;\n    this.Gh = T256_IV[12] | 0;\n    this.Gl = T256_IV[13] | 0;\n    this.Hh = T256_IV[14] | 0;\n    this.Hl = T256_IV[15] | 0;\n  }\n}\n/**\n * SHA2-256 hash function from RFC 4634.\n *\n * It is the fastest JS hash, even faster than Blake3.\n * To break sha256 using birthday attack, attackers need to try 2^128 hashes.\n * BTC network is doing 2^70 hashes/sec (2^95 hashes/year) as per 2025.\n */\nexport const sha256 = /* @__PURE__ */createHasher(() => new SHA256());\n/** SHA2-224 hash function from RFC 4634 */\nexport const sha224 = /* @__PURE__ */createHasher(() => new SHA224());\n/** SHA2-512 hash function from RFC 4634. */\nexport const sha512 = /* @__PURE__ */createHasher(() => new SHA512());\n/** SHA2-384 hash function from RFC 4634. */\nexport const sha384 = /* @__PURE__ */createHasher(() => new SHA384());\n/**\n * SHA2-512/256 \"truncated\" hash function, with improved resistance to length extension attacks.\n * See the paper on [truncated SHA512](https://eprint.iacr.org/2010/548.pdf).\n */\nexport const sha512_256 = /* @__PURE__ */createHasher(() => new SHA512_256());\n/**\n * SHA2-512/224 \"truncated\" hash function, with improved resistance to length extension attacks.\n * See the paper on [truncated SHA512](https://eprint.iacr.org/2010/548.pdf).\n */\nexport const sha512_224 = /* @__PURE__ */createHasher(() => new SHA512_224());\n//# sourceMappingURL=sha2.js.map","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}