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{"version":3,"file":"sha256.browser.js","sourceRoot":"","sources":["../../src/sha256.browser.ts"],"names":[],"mappings":"AAAA,uCAAuC;AACvC,kCAAkC;AAElC,OAAO,EAAE,aAAa,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AACjE,OAAO,EAAE,WAAW,EAAE,MAAM,OAAO,CAAC;AACpC,OAAO,EAAE,WAAW,EAAE,MAAM,gBAAgB,CAAC;AA6C7C,IAAI,YAAsC,CAAC;AAE3C;;;GAGG;AACH,SAAS,SAAS;IAChB,IAAI,YAAY,EAAE;QAChB,OAAO,YAAY,CAAC;KACrB;IAED,IAAI,CAAC,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,EAAE;QACvC,MAAM,IAAI,KAAK,CAAC,mEAAmE,CAAC,CAAC;KACtF;IAED,YAAY,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC;IAClC,OAAO,YAAY,CAAC;AACtB,CAAC;AAED;;;;;GAKG;AACH,MAAM,CAAC,KAAK,UAAU,iBAAiB,CACrC,GAAW,EACX,YAAoB,EACpB,QAA0B;IAE1B,MAAM,MAAM,GAAG,SAAS,EAAE,CAAC;IAC3B,MAAM,QAAQ,GAAG,aAAa,CAAC,GAAG,CAAC,CAAC;IACpC,MAAM,iBAAiB,GAAG,WAAW,CAAC,YAAY,CAAC,CAAC;IAEpD,MAAM,SAAS,GAAG,MAAM,MAAM,CAAC,SAAS,CACtC,KAAK,EACL,QAAQ,EACR;QACE,IAAI,EAAE,MAAM;QACZ,IAAI,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE;KAC1B,EACD,KAAK,EACL,CAAC,MAAM,CAAC,CACT,CAAC;IACF,MAAM,SAAS,GAAG,MAAM,MAAM,CAAC,IAAI,CACjC;QACE,IAAI,EAAE,MAAM;QACZ,IAAI,EAAE,EAAE,IAAI,EAAE,SAAS,EAAE;KAC1B,EACD,SAAS,EACT,iBAAiB,CAClB,CAAC;IAEF,QAAQ,QAAQ,EAAE;QAChB,KAAK,QAAQ;YACX,OAAO,cAAc,CAAC,SAAS,CAAC,CAAC;QACnC,KAAK,KAAK;YACR,OAAO,WAAW,CAAC,SAAS,CAAC,CAAC;KACjC;AACH,CAAC;AAED;;;;GAIG;AACH,MAAM,CAAC,KAAK,UAAU,iBAAiB,CACrC,OAAe,EACf,QAA0B;IAE1B,MAAM,YAAY,GAAG,WAAW,CAAC,OAAO,CAAC,CAAC;IAC1C,MAAM,MAAM,GAAG,MAAM,SAAS,EAAE,CAAC,MAAM,CAAC,EAAE,IAAI,EAAE,SAAS,EAAE,EAAE,YAAY,CAAC,CAAC;IAE3E,QAAQ,QAAQ,EAAE;QAChB,KAAK,QAAQ;YACX,OAAO,cAAc,CAAC,MAAM,CAAC,CAAC;QAChC,KAAK,KAAK;YACR,OAAO,WAAW,CAAC,MAAM,CAAC,CAAC;KAC9B;AACH,CAAC","sourcesContent":["// Copyright (c) Microsoft Corporation.\n// Licensed under the MIT license.\n\nimport { base64ToBytes, bufferToBase64 } from \"./base64.browser\";\nimport { bufferToHex } from \"./hex\";\nimport { utf8ToBytes } from \"./utf8.browser\";\n\n// stubs for browser self.crypto\ninterface JsonWebKey {}\ninterface CryptoKey {}\ntype KeyUsage =\n | \"decrypt\"\n | \"deriveBits\"\n | \"deriveKey\"\n | \"encrypt\"\n | \"sign\"\n | \"unwrapKey\"\n | \"verify\"\n | \"wrapKey\";\ninterface Algorithm {\n name: string;\n}\ninterface SubtleCrypto {\n importKey(\n format: string,\n keyData: JsonWebKey,\n algorithm: HmacImportParams,\n extractable: boolean,\n usage: KeyUsage[]\n ): Promise<CryptoKey>;\n sign(\n algorithm: HmacImportParams,\n key: CryptoKey,\n data: ArrayBufferView | ArrayBuffer\n ): Promise<ArrayBuffer>;\n digest(algorithm: Algorithm, data: ArrayBufferView | ArrayBuffer): Promise<ArrayBuffer>;\n}\ninterface Crypto {\n readonly subtle: SubtleCrypto;\n getRandomValues<T extends ArrayBufferView | null>(array: T): T;\n}\ndeclare const self: {\n crypto: Crypto;\n};\ninterface HmacImportParams {\n name: string;\n hash: Algorithm;\n length?: number;\n}\n\nlet subtleCrypto: SubtleCrypto | undefined;\n\n/**\n * Returns a cached reference to the Web API crypto.subtle object.\n * @internal\n */\nfunction getCrypto(): SubtleCrypto {\n if (subtleCrypto) {\n return subtleCrypto;\n }\n\n if (!self.crypto || !self.crypto.subtle) {\n throw new Error(\"Your browser environment does not support cryptography functions.\");\n }\n\n subtleCrypto = self.crypto.subtle;\n return subtleCrypto;\n}\n\n/**\n * Generates a SHA-256 HMAC signature.\n * @param key - The HMAC key represented as a base64 string, used to generate the cryptographic HMAC hash.\n * @param stringToSign - The data to be signed.\n * @param encoding - The textual encoding to use for the returned HMAC digest.\n */\nexport async function computeSha256Hmac(\n key: string,\n stringToSign: string,\n encoding: \"base64\" | \"hex\"\n): Promise<string> {\n const crypto = getCrypto();\n const keyBytes = base64ToBytes(key);\n const stringToSignBytes = utf8ToBytes(stringToSign);\n\n const cryptoKey = await crypto.importKey(\n \"raw\",\n keyBytes,\n {\n name: \"HMAC\",\n hash: { name: \"SHA-256\" },\n },\n false,\n [\"sign\"]\n );\n const signature = await crypto.sign(\n {\n name: \"HMAC\",\n hash: { name: \"SHA-256\" },\n },\n cryptoKey,\n stringToSignBytes\n );\n\n switch (encoding) {\n case \"base64\":\n return bufferToBase64(signature);\n case \"hex\":\n return bufferToHex(signature);\n }\n}\n\n/**\n * Generates a SHA-256 hash.\n * @param content - The data to be included in the hash.\n * @param encoding - The textual encoding to use for the returned hash.\n */\nexport async function computeSha256Hash(\n content: string,\n encoding: \"base64\" | \"hex\"\n): Promise<string> {\n const contentBytes = utf8ToBytes(content);\n const digest = await getCrypto().digest({ name: \"SHA-256\" }, contentBytes);\n\n switch (encoding) {\n case \"base64\":\n return bufferToBase64(digest);\n case \"hex\":\n return bufferToHex(digest);\n }\n}\n"]} |