1 line
9.8 KiB
JSON
1 line
9.8 KiB
JSON
{"ast":null,"code":"var md5 = require('create-hash/md5');\n\nvar RIPEMD160 = require('ripemd160');\n\nvar sha = require('sha.js');\n\nvar Buffer = require('safe-buffer').Buffer;\n\nvar checkParameters = require('./precondition');\n\nvar defaultEncoding = require('./default-encoding');\n\nvar toBuffer = require('./to-buffer');\n\nvar ZEROS = Buffer.alloc(128);\nvar sizes = {\n md5: 16,\n sha1: 20,\n sha224: 28,\n sha256: 32,\n sha384: 48,\n sha512: 64,\n rmd160: 20,\n ripemd160: 20\n};\n\nfunction Hmac(alg, key, saltLen) {\n var hash = getDigest(alg);\n var blocksize = alg === 'sha512' || alg === 'sha384' ? 128 : 64;\n\n if (key.length > blocksize) {\n key = hash(key);\n } else if (key.length < blocksize) {\n key = Buffer.concat([key, ZEROS], blocksize);\n }\n\n var ipad = Buffer.allocUnsafe(blocksize + sizes[alg]);\n var opad = Buffer.allocUnsafe(blocksize + sizes[alg]);\n\n for (var i = 0; i < blocksize; i++) {\n ipad[i] = key[i] ^ 0x36;\n opad[i] = key[i] ^ 0x5C;\n }\n\n var ipad1 = 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