| 1 | /*
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| 2 | * Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the >License>). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/evp.h>
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| 11 | #include <openssl/rand.h>
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| 12 | #include <openssl/bio.h>
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| 13 | #include <openssl/core_names.h>
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| 14 | #include "crypto/rand.h"
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| 15 | #include "testutil.h"
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| 16 |
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| 17 | static int test_rand(void)
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| 18 | {
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| 19 | EVP_RAND_CTX *privctx;
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| 20 | OSSL_PARAM params[2], *p = params;
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| 21 | unsigned char entropy1[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
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| 22 | unsigned char entropy2[] = { 0xff, 0xfe, 0xfd };
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| 23 | unsigned char outbuf[3];
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| 24 |
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| 25 | *p++ = OSSL_PARAM_construct_octet_string(OSSL_RAND_PARAM_TEST_ENTROPY,
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| 26 | entropy1, sizeof(entropy1));
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| 27 | *p = OSSL_PARAM_construct_end();
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| 28 |
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| 29 | if (!TEST_ptr(privctx = RAND_get0_private(NULL))
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| 30 | || !TEST_true(EVP_RAND_CTX_set_params(privctx, params))
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| 31 | || !TEST_int_gt(RAND_priv_bytes(outbuf, sizeof(outbuf)), 0)
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| 32 | || !TEST_mem_eq(outbuf, sizeof(outbuf), entropy1, sizeof(outbuf))
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| 33 | || !TEST_int_le(RAND_priv_bytes(outbuf, sizeof(outbuf) + 1), 0)
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| 34 | || !TEST_int_gt(RAND_priv_bytes(outbuf, sizeof(outbuf)), 0)
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| 35 | || !TEST_mem_eq(outbuf, sizeof(outbuf),
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| 36 | entropy1 + sizeof(outbuf), sizeof(outbuf)))
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| 37 | return 0;
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| 38 |
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| 39 | *params = OSSL_PARAM_construct_octet_string(OSSL_RAND_PARAM_TEST_ENTROPY,
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| 40 | entropy2, sizeof(entropy2));
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| 41 | if (!TEST_true(EVP_RAND_CTX_set_params(privctx, params))
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| 42 | || !TEST_int_gt(RAND_priv_bytes(outbuf, sizeof(outbuf)), 0)
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| 43 | || !TEST_mem_eq(outbuf, sizeof(outbuf), entropy2, sizeof(outbuf)))
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| 44 | return 0;
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| 45 | return 1;
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| 46 | }
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| 47 |
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| 48 | static int test_rand_uniform(void)
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| 49 | {
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| 50 | uint32_t x, i, j;
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| 51 | int err = 0, res = 0;
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| 52 | OSSL_LIB_CTX *ctx;
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| 53 |
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| 54 | if (!test_get_libctx(&ctx, NULL, NULL, NULL, NULL))
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| 55 | goto err;
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| 56 |
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| 57 | for (i = 1; i < 100; i += 13) {
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| 58 | x = ossl_rand_uniform_uint32(ctx, i, &err);
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| 59 | if (!TEST_int_eq(err, 0)
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| 60 | || !TEST_uint_ge(x, 0)
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| 61 | || !TEST_uint_lt(x, i))
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| 62 | return 0;
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| 63 | }
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| 64 | for (i = 1; i < 100; i += 17)
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| 65 | for (j = i + 1; j < 150; j += 11) {
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| 66 | x = ossl_rand_range_uint32(ctx, i, j, &err);
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| 67 | if (!TEST_int_eq(err, 0)
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| 68 | || !TEST_uint_ge(x, i)
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| 69 | || !TEST_uint_lt(x, j))
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| 70 | return 0;
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| 71 | }
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| 72 |
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| 73 | res = 1;
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| 74 | err:
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| 75 | OSSL_LIB_CTX_free(ctx);
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| 76 | return res;
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| 77 | }
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| 78 |
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| 79 | int setup_tests(void)
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| 80 | {
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| 81 | if (!TEST_true(RAND_set_DRBG_type(NULL, "TEST-RAND", NULL, NULL, NULL)))
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| 82 | return 0;
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| 83 | ADD_TEST(test_rand);
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| 84 | ADD_TEST(test_rand_uniform);
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| 85 | return 1;
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| 86 | }
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