@langchain/core
Version:
Core LangChain.js abstractions and schemas
339 lines (336 loc) • 10.8 kB
JavaScript
//#region src/utils/js-sha256/hash.ts
var HEX_CHARS = "0123456789abcdef".split("");
var EXTRA = [
-2147483648,
8388608,
32768,
128
];
var SHIFT = [
24,
16,
8,
0
];
var K = [
1116352408,
1899447441,
3049323471,
3921009573,
961987163,
1508970993,
2453635748,
2870763221,
3624381080,
310598401,
607225278,
1426881987,
1925078388,
2162078206,
2614888103,
3248222580,
3835390401,
4022224774,
264347078,
604807628,
770255983,
1249150122,
1555081692,
1996064986,
2554220882,
2821834349,
2952996808,
3210313671,
3336571891,
3584528711,
113926993,
338241895,
666307205,
773529912,
1294757372,
1396182291,
1695183700,
1986661051,
2177026350,
2456956037,
2730485921,
2820302411,
3259730800,
3345764771,
3516065817,
3600352804,
4094571909,
275423344,
430227734,
506948616,
659060556,
883997877,
958139571,
1322822218,
1537002063,
1747873779,
1955562222,
2024104815,
2227730452,
2361852424,
2428436474,
2756734187,
3204031479,
3329325298
];
var blocks = [];
function Sha256(is224, sharedMemory) {
if (sharedMemory) {
blocks[0] = blocks[16] = blocks[1] = blocks[2] = blocks[3] = blocks[4] = blocks[5] = blocks[6] = blocks[7] = blocks[8] = blocks[9] = blocks[10] = blocks[11] = blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
this.blocks = blocks;
} else this.blocks = [
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
];
if (is224) {
this.h0 = 3238371032;
this.h1 = 914150663;
this.h2 = 812702999;
this.h3 = 4144912697;
this.h4 = 4290775857;
this.h5 = 1750603025;
this.h6 = 1694076839;
this.h7 = 3204075428;
} else {
this.h0 = 1779033703;
this.h1 = 3144134277;
this.h2 = 1013904242;
this.h3 = 2773480762;
this.h4 = 1359893119;
this.h5 = 2600822924;
this.h6 = 528734635;
this.h7 = 1541459225;
}
this.block = this.start = this.bytes = this.hBytes = 0;
this.finalized = this.hashed = false;
this.first = true;
this.is224 = is224;
}
Sha256.prototype.update = function(message) {
if (this.finalized) return;
var notString, type = typeof message;
if (type !== "string") {
if (type === "object") {
if (message === null) throw new Error(ERROR);
else if (ARRAY_BUFFER && message.constructor === ArrayBuffer) message = new Uint8Array(message);
else if (!Array.isArray(message)) {
if (!ARRAY_BUFFER || !ArrayBuffer.isView(message)) throw new Error(ERROR);
}
} else throw new Error(ERROR);
notString = true;
}
var code, index = 0, i, length = message.length, blocks$1 = this.blocks;
while (index < length) {
if (this.hashed) {
this.hashed = false;
blocks$1[0] = this.block;
this.block = blocks$1[16] = blocks$1[1] = blocks$1[2] = blocks$1[3] = blocks$1[4] = blocks$1[5] = blocks$1[6] = blocks$1[7] = blocks$1[8] = blocks$1[9] = blocks$1[10] = blocks$1[11] = blocks$1[12] = blocks$1[13] = blocks$1[14] = blocks$1[15] = 0;
}
if (notString) for (i = this.start; index < length && i < 64; ++index) blocks$1[i >>> 2] |= message[index] << SHIFT[i++ & 3];
else for (i = this.start; index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 128) blocks$1[i >>> 2] |= code << SHIFT[i++ & 3];
else if (code < 2048) {
blocks$1[i >>> 2] |= (192 | code >>> 6) << SHIFT[i++ & 3];
blocks$1[i >>> 2] |= (128 | code & 63) << SHIFT[i++ & 3];
} else if (code < 55296 || code >= 57344) {
blocks$1[i >>> 2] |= (224 | code >>> 12) << SHIFT[i++ & 3];
blocks$1[i >>> 2] |= (128 | code >>> 6 & 63) << SHIFT[i++ & 3];
blocks$1[i >>> 2] |= (128 | code & 63) << SHIFT[i++ & 3];
} else {
code = 65536 + ((code & 1023) << 10 | message.charCodeAt(++index) & 1023);
blocks$1[i >>> 2] |= (240 | code >>> 18) << SHIFT[i++ & 3];
blocks$1[i >>> 2] |= (128 | code >>> 12 & 63) << SHIFT[i++ & 3];
blocks$1[i >>> 2] |= (128 | code >>> 6 & 63) << SHIFT[i++ & 3];
blocks$1[i >>> 2] |= (128 | code & 63) << SHIFT[i++ & 3];
}
}
this.lastByteIndex = i;
this.bytes += i - this.start;
if (i >= 64) {
this.block = blocks$1[16];
this.start = i - 64;
this.hash();
this.hashed = true;
} else this.start = i;
}
if (this.bytes > 4294967295) {
this.hBytes += this.bytes / 4294967296 << 0;
this.bytes = this.bytes % 4294967296;
}
return this;
};
Sha256.prototype.finalize = function() {
if (this.finalized) return;
this.finalized = true;
var blocks$1 = this.blocks, i = this.lastByteIndex;
blocks$1[16] = this.block;
blocks$1[i >>> 2] |= EXTRA[i & 3];
this.block = blocks$1[16];
if (i >= 56) {
if (!this.hashed) this.hash();
blocks$1[0] = this.block;
blocks$1[16] = blocks$1[1] = blocks$1[2] = blocks$1[3] = blocks$1[4] = blocks$1[5] = blocks$1[6] = blocks$1[7] = blocks$1[8] = blocks$1[9] = blocks$1[10] = blocks$1[11] = blocks$1[12] = blocks$1[13] = blocks$1[14] = blocks$1[15] = 0;
}
blocks$1[14] = this.hBytes << 3 | this.bytes >>> 29;
blocks$1[15] = this.bytes << 3;
this.hash();
};
Sha256.prototype.hash = function() {
var a = this.h0, b = this.h1, c = this.h2, d = this.h3, e = this.h4, f = this.h5, g = this.h6, h = this.h7, blocks$1 = this.blocks, j, s0, s1, maj, t1, t2, ch, ab, da, cd, bc;
for (j = 16; j < 64; ++j) {
t1 = blocks$1[j - 15];
s0 = (t1 >>> 7 | t1 << 25) ^ (t1 >>> 18 | t1 << 14) ^ t1 >>> 3;
t1 = blocks$1[j - 2];
s1 = (t1 >>> 17 | t1 << 15) ^ (t1 >>> 19 | t1 << 13) ^ t1 >>> 10;
blocks$1[j] = blocks$1[j - 16] + s0 + blocks$1[j - 7] + s1 << 0;
}
bc = b & c;
for (j = 0; j < 64; j += 4) {
if (this.first) {
if (this.is224) {
ab = 300032;
t1 = blocks$1[0] - 1413257819;
h = t1 - 150054599 << 0;
d = t1 + 24177077 << 0;
} else {
ab = 704751109;
t1 = blocks$1[0] - 210244248;
h = t1 - 1521486534 << 0;
d = t1 + 143694565 << 0;
}
this.first = false;
} else {
s0 = (a >>> 2 | a << 30) ^ (a >>> 13 | a << 19) ^ (a >>> 22 | a << 10);
s1 = (e >>> 6 | e << 26) ^ (e >>> 11 | e << 21) ^ (e >>> 25 | e << 7);
ab = a & b;
maj = ab ^ a & c ^ bc;
ch = e & f ^ ~e & g;
t1 = h + s1 + ch + K[j] + blocks$1[j];
t2 = s0 + maj;
h = d + t1 << 0;
d = t1 + t2 << 0;
}
s0 = (d >>> 2 | d << 30) ^ (d >>> 13 | d << 19) ^ (d >>> 22 | d << 10);
s1 = (h >>> 6 | h << 26) ^ (h >>> 11 | h << 21) ^ (h >>> 25 | h << 7);
da = d & a;
maj = da ^ d & b ^ ab;
ch = g & h ^ ~g & e;
t1 = f + s1 + ch + K[j + 1] + blocks$1[j + 1];
t2 = s0 + maj;
g = c + t1 << 0;
c = t1 + t2 << 0;
s0 = (c >>> 2 | c << 30) ^ (c >>> 13 | c << 19) ^ (c >>> 22 | c << 10);
s1 = (g >>> 6 | g << 26) ^ (g >>> 11 | g << 21) ^ (g >>> 25 | g << 7);
cd = c & d;
maj = cd ^ c & a ^ da;
ch = f & g ^ ~f & h;
t1 = e + s1 + ch + K[j + 2] + blocks$1[j + 2];
t2 = s0 + maj;
f = b + t1 << 0;
b = t1 + t2 << 0;
s0 = (b >>> 2 | b << 30) ^ (b >>> 13 | b << 19) ^ (b >>> 22 | b << 10);
s1 = (f >>> 6 | f << 26) ^ (f >>> 11 | f << 21) ^ (f >>> 25 | f << 7);
bc = b & c;
maj = bc ^ b & d ^ cd;
ch = f & g ^ ~f & h;
t1 = e + s1 + ch + K[j + 3] + blocks$1[j + 3];
t2 = s0 + maj;
e = a + t1 << 0;
a = t1 + t2 << 0;
this.chromeBugWorkAround = true;
}
this.h0 = this.h0 + a << 0;
this.h1 = this.h1 + b << 0;
this.h2 = this.h2 + c << 0;
this.h3 = this.h3 + d << 0;
this.h4 = this.h4 + e << 0;
this.h5 = this.h5 + f << 0;
this.h6 = this.h6 + g << 0;
this.h7 = this.h7 + h << 0;
};
Sha256.prototype.hex = function() {
this.finalize();
var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3, h4 = this.h4, h5 = this.h5, h6 = this.h6, h7 = this.h7;
var hex = HEX_CHARS[h0 >>> 28 & 15] + HEX_CHARS[h0 >>> 24 & 15] + HEX_CHARS[h0 >>> 20 & 15] + HEX_CHARS[h0 >>> 16 & 15] + HEX_CHARS[h0 >>> 12 & 15] + HEX_CHARS[h0 >>> 8 & 15] + HEX_CHARS[h0 >>> 4 & 15] + HEX_CHARS[h0 & 15] + HEX_CHARS[h1 >>> 28 & 15] + HEX_CHARS[h1 >>> 24 & 15] + HEX_CHARS[h1 >>> 20 & 15] + HEX_CHARS[h1 >>> 16 & 15] + HEX_CHARS[h1 >>> 12 & 15] + HEX_CHARS[h1 >>> 8 & 15] + HEX_CHARS[h1 >>> 4 & 15] + HEX_CHARS[h1 & 15] + HEX_CHARS[h2 >>> 28 & 15] + HEX_CHARS[h2 >>> 24 & 15] + HEX_CHARS[h2 >>> 20 & 15] + HEX_CHARS[h2 >>> 16 & 15] + HEX_CHARS[h2 >>> 12 & 15] + HEX_CHARS[h2 >>> 8 & 15] + HEX_CHARS[h2 >>> 4 & 15] + HEX_CHARS[h2 & 15] + HEX_CHARS[h3 >>> 28 & 15] + HEX_CHARS[h3 >>> 24 & 15] + HEX_CHARS[h3 >>> 20 & 15] + HEX_CHARS[h3 >>> 16 & 15] + HEX_CHARS[h3 >>> 12 & 15] + HEX_CHARS[h3 >>> 8 & 15] + HEX_CHARS[h3 >>> 4 & 15] + HEX_CHARS[h3 & 15] + HEX_CHARS[h4 >>> 28 & 15] + HEX_CHARS[h4 >>> 24 & 15] + HEX_CHARS[h4 >>> 20 & 15] + HEX_CHARS[h4 >>> 16 & 15] + HEX_CHARS[h4 >>> 12 & 15] + HEX_CHARS[h4 >>> 8 & 15] + HEX_CHARS[h4 >>> 4 & 15] + HEX_CHARS[h4 & 15] + HEX_CHARS[h5 >>> 28 & 15] + HEX_CHARS[h5 >>> 24 & 15] + HEX_CHARS[h5 >>> 20 & 15] + HEX_CHARS[h5 >>> 16 & 15] + HEX_CHARS[h5 >>> 12 & 15] + HEX_CHARS[h5 >>> 8 & 15] + HEX_CHARS[h5 >>> 4 & 15] + HEX_CHARS[h5 & 15] + HEX_CHARS[h6 >>> 28 & 15] + HEX_CHARS[h6 >>> 24 & 15] + HEX_CHARS[h6 >>> 20 & 15] + HEX_CHARS[h6 >>> 16 & 15] + HEX_CHARS[h6 >>> 12 & 15] + HEX_CHARS[h6 >>> 8 & 15] + HEX_CHARS[h6 >>> 4 & 15] + HEX_CHARS[h6 & 15];
if (!this.is224) hex += HEX_CHARS[h7 >>> 28 & 15] + HEX_CHARS[h7 >>> 24 & 15] + HEX_CHARS[h7 >>> 20 & 15] + HEX_CHARS[h7 >>> 16 & 15] + HEX_CHARS[h7 >>> 12 & 15] + HEX_CHARS[h7 >>> 8 & 15] + HEX_CHARS[h7 >>> 4 & 15] + HEX_CHARS[h7 & 15];
return hex;
};
Sha256.prototype.toString = Sha256.prototype.hex;
Sha256.prototype.digest = function() {
this.finalize();
var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3, h4 = this.h4, h5 = this.h5, h6 = this.h6, h7 = this.h7;
var arr = [
h0 >>> 24 & 255,
h0 >>> 16 & 255,
h0 >>> 8 & 255,
h0 & 255,
h1 >>> 24 & 255,
h1 >>> 16 & 255,
h1 >>> 8 & 255,
h1 & 255,
h2 >>> 24 & 255,
h2 >>> 16 & 255,
h2 >>> 8 & 255,
h2 & 255,
h3 >>> 24 & 255,
h3 >>> 16 & 255,
h3 >>> 8 & 255,
h3 & 255,
h4 >>> 24 & 255,
h4 >>> 16 & 255,
h4 >>> 8 & 255,
h4 & 255,
h5 >>> 24 & 255,
h5 >>> 16 & 255,
h5 >>> 8 & 255,
h5 & 255,
h6 >>> 24 & 255,
h6 >>> 16 & 255,
h6 >>> 8 & 255,
h6 & 255
];
if (!this.is224) arr.push(h7 >>> 24 & 255, h7 >>> 16 & 255, h7 >>> 8 & 255, h7 & 255);
return arr;
};
Sha256.prototype.array = Sha256.prototype.digest;
Sha256.prototype.arrayBuffer = function() {
this.finalize();
var buffer = /* @__PURE__ */ new ArrayBuffer(this.is224 ? 28 : 32);
var dataView = new DataView(buffer);
dataView.setUint32(0, this.h0);
dataView.setUint32(4, this.h1);
dataView.setUint32(8, this.h2);
dataView.setUint32(12, this.h3);
dataView.setUint32(16, this.h4);
dataView.setUint32(20, this.h5);
dataView.setUint32(24, this.h6);
if (!this.is224) dataView.setUint32(28, this.h7);
return buffer;
};
const sha256 = (...strings) => {
return new Sha256(false, true).update(strings.join("")).hex();
};
//#endregion
export { sha256 };
//# sourceMappingURL=hash.js.map