| 1 | /**
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| 2 | * @license
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| 3 | * Copyright 2017 Google LLC
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| 4 | *
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| 5 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 6 | * you may not use this file except in compliance with the License.
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| 7 | * You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 | /**
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| 18 | * @fileoverview SHA-1 cryptographic hash.
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| 19 | * Variable names follow the notation in FIPS PUB 180-3:
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| 20 | * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.
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| 21 | *
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| 22 | * Usage:
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| 23 | * var sha1 = new sha1();
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| 24 | * sha1.update(bytes);
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| 25 | * var hash = sha1.digest();
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| 26 | *
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| 27 | * Performance:
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| 28 | * Chrome 23: ~400 Mbit/s
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| 29 | * Firefox 16: ~250 Mbit/s
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| 30 | *
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| 31 | */
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| 32 | /**
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| 33 | * SHA-1 cryptographic hash constructor.
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| 34 | *
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| 35 | * The properties declared here are discussed in the above algorithm document.
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| 36 | * @constructor
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| 37 | * @final
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| 38 | * @struct
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| 39 | */
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| 40 | export declare class Sha1 {
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| 41 | /**
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| 42 | * Holds the previous values of accumulated variables a-e in the compress_
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| 43 | * function.
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| 44 | * @private
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| 45 | */
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| 46 | private chain_;
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| 47 | /**
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| 48 | * A buffer holding the partially computed hash result.
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| 49 | * @private
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| 50 | */
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| 51 | private buf_;
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| 52 | /**
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| 53 | * An array of 80 bytes, each a part of the message to be hashed. Referred to
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| 54 | * as the message schedule in the docs.
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| 55 | * @private
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| 56 | */
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| 57 | private W_;
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| 58 | /**
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| 59 | * Contains data needed to pad messages less than 64 bytes.
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| 60 | * @private
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| 61 | */
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| 62 | private pad_;
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| 63 | /**
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| 64 | * @private {number}
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| 65 | */
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| 66 | private inbuf_;
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| 67 | /**
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| 68 | * @private {number}
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| 69 | */
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| 70 | private total_;
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| 71 | blockSize: number;
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| 72 | constructor();
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| 73 | reset(): void;
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| 74 | /**
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| 75 | * Internal compress helper function.
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| 76 | * @param buf Block to compress.
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| 77 | * @param offset Offset of the block in the buffer.
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| 78 | * @private
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| 79 | */
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| 80 | compress_(buf: number[] | Uint8Array | string, offset?: number): void;
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| 81 | update(bytes?: number[] | Uint8Array | string, length?: number): void;
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| 82 | /** @override */
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| 83 | digest(): number[];
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| 84 | }
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