| 1 | /*
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| 2 | * Copyright 2011-2021 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 | /*
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| 11 | * DH low level APIs are deprecated for public use, but still ok for
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| 12 | * internal use.
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| 13 | */
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| 14 | #include "internal/deprecated.h"
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| 15 |
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| 16 | #include <stdio.h>
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| 17 | #include "internal/cryptlib.h"
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| 18 | #include "dh_local.h"
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| 19 | #include <openssl/bn.h>
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| 20 | #include "crypto/bn_dh.h"
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| 21 |
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| 22 | /*
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| 23 | * Macro to make a DH structure from BIGNUM data. NB: although just copying
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| 24 | * the BIGNUM static pointers would be more efficient, we can't do that
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| 25 | * because they get wiped using BN_clear_free() when DH_free() is called.
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| 26 | */
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| 27 |
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| 28 | #define make_dh(x) \
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| 29 | DH *DH_get_##x(void) \
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| 30 | { \
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| 31 | DH *dh = DH_new(); \
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| 32 | \
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| 33 | if (dh == NULL) \
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| 34 | return NULL; \
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| 35 | dh->params.p = BN_dup(&ossl_bignum_dh##x##_p); \
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| 36 | dh->params.g = BN_dup(&ossl_bignum_dh##x##_g); \
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| 37 | dh->params.q = BN_dup(&ossl_bignum_dh##x##_q); \
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| 38 | if (dh->params.p == NULL || dh->params.q == NULL || dh->params.g == NULL) {\
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| 39 | DH_free(dh); \
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| 40 | return NULL; \
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| 41 | } \
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| 42 | return dh; \
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| 43 | }
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| 44 |
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| 45 | make_dh(1024_160)
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| 46 | make_dh(2048_224)
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| 47 | make_dh(2048_256)
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