9 | | |
10 | | /* |
11 | | * Configurable variables. You may need to tweak these to be compatible with |
12 | | * the server-side, but the defaults work in most cases. |
13 | | */ |
14 | | var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */ |
15 | | var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */ |
16 | | var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */ |
17 | | |
18 | | /* |
19 | | * These are the functions you'll usually want to call |
20 | | * They take string arguments and return either hex or base-64 encoded strings |
21 | | */ |
22 | | function hex_sha1(s){return binb2hex(core_sha1(str2binb(s),s.length * chrsz));} |
23 | | function b64_sha1(s){return binb2b64(core_sha1(str2binb(s),s.length * chrsz));} |
24 | | function str_sha1(s){return binb2str(core_sha1(str2binb(s),s.length * chrsz));} |
25 | | function hex_hmac_sha1(key, data){ return binb2hex(core_hmac_sha1(key, data));} |
26 | | function b64_hmac_sha1(key, data){ return binb2b64(core_hmac_sha1(key, data));} |
27 | | function str_hmac_sha1(key, data){ return binb2str(core_hmac_sha1(key, data));} |
28 | | |
29 | | /* |
30 | | * Perform a simple self-test to see if the VM is working |
31 | | */ |
32 | | function sha1_vm_test() |
33 | | { |
34 | | return hex_sha1("abc") == "a9993e364706816aba3e25717850c26c9cd0d89d"; |
35 | | } |
36 | | |
37 | | /* |
38 | | * Calculate the SHA-1 of an array of big-endian words, and a bit length |
39 | | */ |
40 | | function core_sha1(x, len) |
41 | | { |
42 | | /* append padding */ |
43 | | x[len >> 5] |= 0x80 << (24 - len % 32); |
44 | | x[((len + 64 >> 9) << 4) + 15] = len; |
45 | | |
46 | | var w = Array(80); |
47 | | var a = 1732584193; |
48 | | var b = -271733879; |
49 | | var c = -1732584194; |
50 | | var d = 271733878; |
51 | | var e = -1009589776; |
52 | | |
53 | | for(var i = 0; i < x.length; i += 16) |
54 | | { |
55 | | var olda = a; |
56 | | var oldb = b; |
57 | | var oldc = c; |
58 | | var oldd = d; |
59 | | var olde = e; |
60 | | |
61 | | for(var j = 0; j < 80; j++) |
62 | | { |
63 | | if(j < 16) w[j] = x[i + j]; |
64 | | else w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1); |
65 | | var t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), |
66 | | safe_add(safe_add(e, w[j]), sha1_kt(j))); |
67 | | e = d; |
68 | | d = c; |
69 | | c = rol(b, 30); |
70 | | b = a; |
71 | | a = t; |
72 | | } |
73 | | |
74 | | a = safe_add(a, olda); |
75 | | b = safe_add(b, oldb); |
76 | | c = safe_add(c, oldc); |
77 | | d = safe_add(d, oldd); |
78 | | e = safe_add(e, olde); |
79 | | } |
80 | | return Array(a, b, c, d, e); |
81 | | |
82 | | } |
83 | | |
84 | | /* |
85 | | * Perform the appropriate triplet combination function for the current |
86 | | * iteration |
87 | | */ |
88 | | function sha1_ft(t, b, c, d) |
89 | | { |
90 | | if(t < 20) return (b & c) | ((~b) & d); |
91 | | if(t < 40) return b ^ c ^ d; |
92 | | if(t < 60) return (b & c) | (b & d) | (c & d); |
93 | | return b ^ c ^ d; |
94 | | } |
95 | | |
96 | | /* |
97 | | * Determine the appropriate additive constant for the current iteration |
98 | | */ |
99 | | function sha1_kt(t) |
100 | | { |
101 | | return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 : |
102 | | (t < 60) ? -1894007588 : -899497514; |
103 | | } |
104 | | |
105 | | /* |
106 | | * Calculate the HMAC-SHA1 of a key and some data |
107 | | */ |
108 | | function core_hmac_sha1(key, data) |
109 | | { |
110 | | var bkey = str2binb(key); |
111 | | if(bkey.length > 16) bkey = core_sha1(bkey, key.length * chrsz); |
112 | | |
113 | | var ipad = Array(16), opad = Array(16); |
114 | | for(var i = 0; i < 16; i++) |
115 | | { |
116 | | ipad[i] = bkey[i] ^ 0x36363636; |
117 | | opad[i] = bkey[i] ^ 0x5C5C5C5C; |
118 | | } |
119 | | |
120 | | var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * chrsz); |
121 | | return core_sha1(opad.concat(hash), 512 + 160); |
122 | | } |
123 | | |
124 | | /* |
125 | | * Add integers, wrapping at 2^32. This uses 16-bit operations internally |
126 | | * to work around bugs in some JS interpreters. |
127 | | */ |
128 | | function safe_add(x, y) |
129 | | { |
130 | | var lsw = (x & 0xFFFF) + (y & 0xFFFF); |
131 | | var msw = (x >> 16) + (y >> 16) + (lsw >> 16); |
132 | | return (msw << 16) | (lsw & 0xFFFF); |
133 | | } |
134 | | |
135 | | /* |
136 | | * Bitwise rotate a 32-bit number to the left. |
137 | | */ |
138 | | function rol(num, cnt) |
139 | | { |
140 | | return (num << cnt) | (num >>> (32 - cnt)); |
141 | | } |
142 | | |
143 | | /* |
144 | | * Convert an 8-bit or 16-bit string to an array of big-endian words |
145 | | * In 8-bit function, characters >255 have their hi-byte silently ignored. |
146 | | */ |
147 | | function str2binb(str) |
148 | | { |
149 | | var bin = Array(); |
150 | | var mask = (1 << chrsz) - 1; |
151 | | for(var i = 0; i < str.length * chrsz; i += chrsz) |
152 | | bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (32 - chrsz - i%32); |
153 | | return bin; |
154 | | } |
155 | | |
156 | | /* |
157 | | * Convert an array of big-endian words to a string |
158 | | */ |
159 | | function binb2str(bin) |
160 | | { |
161 | | var str = ""; |
162 | | var mask = (1 << chrsz) - 1; |
163 | | for(var i = 0; i < bin.length * 32; i += chrsz) |
164 | | str += String.fromCharCode((bin[i>>5] >>> (32 - chrsz - i%32)) & mask); |
165 | | return str; |
166 | | } |
167 | | |
168 | | /* |
169 | | * Convert an array of big-endian words to a hex string. |
170 | | */ |
171 | | function binb2hex(binarray) |
172 | | { |
173 | | var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; |
174 | | var str = ""; |
175 | | for(var i = 0; i < binarray.length * 4; i++) |
176 | | { |
177 | | str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) + |
178 | | hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8 )) & 0xF); |
179 | | } |
180 | | return str; |
181 | | } |
182 | | |
183 | | /* |
184 | | * Convert an array of big-endian words to a base-64 string |
185 | | */ |
186 | | function binb2b64(binarray) |
187 | | { |
188 | | var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
189 | | var str = ""; |
190 | | for(var i = 0; i < binarray.length * 4; i += 3) |
191 | | { |
192 | | var triplet = (((binarray[i >> 2] >> 8 * (3 - i %4)) & 0xFF) << 16) |
193 | | | (((binarray[i+1 >> 2] >> 8 * (3 - (i+1)%4)) & 0xFF) << 8 ) |
194 | | | ((binarray[i+2 >> 2] >> 8 * (3 - (i+2)%4)) & 0xFF); |
195 | | for(var j = 0; j < 4; j++) |
196 | | { |
197 | | if(i * 8 + j * 6 > binarray.length * 32) str += b64pad; |
198 | | else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); |
199 | | } |
200 | | } |
201 | | return str; |
202 | | } |
203 | | |
| 9 | var b64_hmac_sha1=(function(){var o=0;var t="";var c=8;function j(u){return i(e(s(u),u.length*c))}function h(u){return m(e(s(u),u.length*c))}function d(u){return q(e(s(u),u.length*c))}function b(u,v){return i(f(u,v))}function g(u,v){return m(f(u,v))}function l(u,v){return q(f(u,v))}function a(){return j("abc")=="a9993e364706816aba3e25717850c26c9cd0d89d"}function e(J,D){J[D>>5]|=128<<(24-D%32);J[((D+64>>9)<<4)+15]=D;var K=Array(80);var I=1732584193;var H=-271733879;var G=-1732584194;var F=271733878;var E=-1009589776;for(var A=0;A<J.length;A+=16){var C=I;var B=H;var z=G;var y=F;var u=E;for(var v=0;v<80;v++){if(v<16){K[v]=J[A+v]}else{K[v]=n(K[v-3]^K[v-8]^K[v-14]^K[v-16],1)}var L=p(p(n(I,5),r(v,H,G,F)),p(p(E,K[v]),k(v)));E=F;F=G;G=n(H,30);H=I;I=L}I=p(I,C);H=p(H,B);G=p(G,z);F=p(F,y);E=p(E,u)}return Array(I,H,G,F,E)}function r(v,u,x,w){if(v<20){return(u&x)|((~u)&w)}if(v<40){return u^x^w}if(v<60){return(u&x)|(u&w)|(x&w)}return u^x^w}function k(u){return(u<20)?1518500249:(u<40)?1859775393:(u<60)?-1894007588:-899497514}function f(w,z){var y=s(w);if(y.length>16){y=e(y,w.length*c)}var u=Array(16),x=Array(16);for(var v=0;v<16;v++){u[v]=y[v]^909522486;x[v]=y[v]^1549556828}var A=e(u.concat(s(z)),512+z.length*c);return e(x.concat(A),512+160)}function p(u,z){var w=(u&65535)+(z&65535);var v=(u>>16)+(z>>16)+(w>>16);return(v<<16)|(w&65535)}function n(u,v){return(u<<v)|(u>>>(32-v))}function s(x){var w=Array();var u=(1<<c)-1;for(var v=0;v<x.length*c;v+=c){w[v>>5]|=(x.charCodeAt(v/c)&u)<<(32-c-v%32)}return w}function q(w){var x="";var u=(1<<c)-1;for(var v=0;v<w.length*32;v+=c){x+=String.fromCharCode((w[v>>5]>>>(32-c-v%32))&u)}return x}function i(w){var v=o?"0123456789ABCDEF":"0123456789abcdef";var x="";for(var u=0;u<w.length*4;u++){x+=v.charAt((w[u>>2]>>((3-u%4)*8+4))&15)+v.charAt((w[u>>2]>>((3-u%4)*8))&15)}return x}function m(x){var w="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";var z="";for(var v=0;v<x.length*4;v+=3){var y=(((x[v>>2]>>8*(3-v%4))&255)<<16)|(((x[v+1>>2]>>8*(3-(v+1)%4))&255)<<8)|((x[v+2>>2]>>8*(3-(v+2)%4))&255);for(var u=0;u<4;u++){if(v*8+u*6>x.length*32){z+=t}else{z+=w.charAt((y>>6*(3-u))&63)}}}return z}return g})(); |