62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
// Copyright (c) 2022, Google Inc.
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// SPDX-License-Identifier: ISC
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#ifndef OPENSSL_HEADER_CRYPTO_FIPSMODULE_DH_INTERNAL_H
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#define OPENSSL_HEADER_CRYPTO_FIPSMODULE_DH_INTERNAL_H
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#include <openssl/base.h>
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#include <openssl/thread.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#define OPENSSL_DH_MAX_MODULUS_BITS 10000
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struct dh_st {
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BIGNUM *p;
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BIGNUM *g;
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BIGNUM *q;
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BIGNUM *pub_key; // g^x mod p
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BIGNUM *priv_key; // x
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// priv_length contains the length, in bits, of the private value. If zero,
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// the private value will be the same length as |p|.
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unsigned priv_length;
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CRYPTO_MUTEX method_mont_p_lock;
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BN_MONT_CTX *method_mont_p;
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int flags;
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CRYPTO_refcount_t references;
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};
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// dh_check_params_fast checks basic invariants on |dh|'s domain parameters. It
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// does not check that |dh| forms a valid group, only that the sizes are within
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// DoS bounds.
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int dh_check_params_fast(const DH *dh);
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// dh_compute_key_padded_no_self_test does the same as |DH_compute_key_padded|,
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// but doesn't try to run the self-test first. This is for use in the self tests
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// themselves, to prevent an infinite loop.
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int dh_compute_key_padded_no_self_test(unsigned char *out,
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const BIGNUM *peers_key, DH *dh);
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// DH_get_rfc7919_3072 returns the group `ffdhe3072` from
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// https://tools.ietf.org/html/rfc7919#appendix-A.2. It returns NULL if out
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// of memory.
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OPENSSL_EXPORT DH *DH_get_rfc7919_3072(void);
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// DH_get_rfc7919_8192 returns the group `ffdhe8192` from
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// https://tools.ietf.org/html/rfc7919#appendix-A.4. It returns NULL if out
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// of memory.
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OPENSSL_EXPORT DH *DH_get_rfc7919_8192(void);
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#if defined(__cplusplus)
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}
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#endif
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#endif // OPENSSL_HEADER_CRYPTO_FIPSMODULE_DH_INTERNAL_H
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