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| 1 | +/* |
| 2 | + * Copyright (c) 2014 - 2020 The GmSSL Project. All rights reserved. |
| 3 | + * |
| 4 | + * Redistribution and use in source and binary forms, with or without |
| 5 | + * modification, are permitted provided that the following conditions |
| 6 | + * are met: |
| 7 | + * |
| 8 | + * 1. Redistributions of source code must retain the above copyright |
| 9 | + * notice, this list of conditions and the following disclaimer. |
| 10 | + * |
| 11 | + * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | + * notice, this list of conditions and the following disclaimer in |
| 13 | + * the documentation and/or other materials provided with the |
| 14 | + * distribution. |
| 15 | + * |
| 16 | + * 3. All advertising materials mentioning features or use of this |
| 17 | + * software must display the following acknowledgment: |
| 18 | + * "This product includes software developed by the GmSSL Project. |
| 19 | + * (http://gmssl.org/)" |
| 20 | + * |
| 21 | + * 4. The name "GmSSL Project" must not be used to endorse or promote |
| 22 | + * products derived from this software without prior written |
| 23 | + * permission. For written permission, please contact |
| 24 | + |
| 25 | + * |
| 26 | + * 5. Products derived from this software may not be called "GmSSL" |
| 27 | + * nor may "GmSSL" appear in their names without prior written |
| 28 | + * permission of the GmSSL Project. |
| 29 | + * |
| 30 | + * 6. Redistributions of any form whatsoever must retain the following |
| 31 | + * acknowledgment: |
| 32 | + * "This product includes software developed by the GmSSL Project |
| 33 | + * (http://gmssl.org/)" |
| 34 | + * |
| 35 | + * THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY |
| 36 | + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 37 | + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 38 | + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR |
| 39 | + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 40 | + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 41 | + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 42 | + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 43 | + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 44 | + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 45 | + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 46 | + * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 47 | + */ |
| 48 | + |
| 49 | +function rand_bytes(data, len) { |
| 50 | + var buf = new Uint8Array(len); |
| 51 | + window.crypto.getRandomValues(buf); |
| 52 | + for (var i = 0; i < len; i++) { |
| 53 | + data[i] = buf[i]; |
| 54 | + buf[i] = 0; |
| 55 | + } |
| 56 | + delete buf; |
| 57 | +} |
| 58 | + |
| 59 | +function bn_rand_range(a, n) { |
| 60 | + var t = new Uint16Array(16); |
| 61 | + do { |
| 62 | + window.crypto.getRandomValues(t); |
| 63 | + } while (bn_cmp(t, n) >= 0); |
| 64 | + bn_copy(a, t); |
| 65 | + bn_free(t); |
| 66 | +} |
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