diff options
Diffstat (limited to 'src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c')
| -rw-r--r-- | src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c | 78 |
1 files changed, 39 insertions, 39 deletions
diff --git a/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c b/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c index a03e83e66..ea7e6fdd2 100644 --- a/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c +++ b/src/libstrongswan/plugins/gmp/gmp_diffie_hellman.c @@ -282,7 +282,7 @@ static u_int8_t group18_modulus[] = { typedef struct modulus_entry_t modulus_entry_t; -/** +/** * Entry of the modulus list. */ struct modulus_entry_t { @@ -290,25 +290,25 @@ struct modulus_entry_t { * Group number as it is defined in file transform_substructure.h. */ diffie_hellman_group_t group; - + /** * Pointer to first byte of modulus (network order). */ u_int8_t *modulus; - - /* + + /* * Length of modulus in bytes. - */ + */ size_t modulus_len; - - /* + + /* * Optimum length of exponent in bytes. - */ + */ size_t opt_exponent_len; - /* + /* * Generator value. - */ + */ u_int16_t generator; }; @@ -336,47 +336,47 @@ struct private_gmp_diffie_hellman_t { * Public gmp_diffie_hellman_t interface. */ gmp_diffie_hellman_t public; - + /** * Diffie Hellman group number. */ u_int16_t group; - - /* + + /* * Generator value. - */ + */ mpz_t g; - + /** * My private value. */ mpz_t xa; - + /** * My public value. */ mpz_t ya; - + /** * Other public value. - */ + */ mpz_t yb; - + /** * Shared secret. - */ + */ mpz_t zz; /** * Modulus. */ mpz_t p; - + /** * Modulus length. */ size_t p_len; - + /** * Optimal exponent length. */ @@ -394,13 +394,13 @@ struct private_gmp_diffie_hellman_t { static void set_other_public_value(private_gmp_diffie_hellman_t *this, chunk_t value) { mpz_t p_min_1; - + mpz_init(p_min_1); mpz_sub_ui(p_min_1, this->p, 1); - + mpz_import(this->yb, value.len, 1, 1, 1, 0, value.ptr); - - /* check public value: + + /* check public value: * 1. 0 or 1 is invalid as 0^a = 0 and 1^a = 1 * 2. a public value larger or equal the modulus is invalid */ if (mpz_cmp_ui(this->yb, 1) > 0 && @@ -409,7 +409,7 @@ static void set_other_public_value(private_gmp_diffie_hellman_t *this, chunk_t v #ifdef EXTENDED_DH_TEST /* 3. test if y ^ q mod p = 1, where q = (p - 1)/2. */ mpz_t q, one; - + mpz_init(q); mpz_init(one); mpz_fdiv_q_2exp(q, p_min_1, 1); @@ -443,11 +443,11 @@ static void set_other_public_value(private_gmp_diffie_hellman_t *this, chunk_t v static void get_my_public_value(private_gmp_diffie_hellman_t *this,chunk_t *value) { value->len = this->p_len; - value->ptr = mpz_export(NULL, NULL, 1, value->len, 1, 0, this->ya); - if (value->ptr == NULL) - { - value->len = 0; - } + value->ptr = mpz_export(NULL, NULL, 1, value->len, 1, 0, this->ya); + if (value->ptr == NULL) + { + value->len = 0; + } } /** @@ -483,7 +483,7 @@ static status_t set_modulus(private_gmp_diffie_hellman_t *this) { int i; status_t status = NOT_FOUND; - + for (i = 0; i < (sizeof(modulus_entries) / sizeof(modulus_entry_t)); i++) { if (modulus_entries[i].group == this->group) @@ -533,7 +533,7 @@ gmp_diffie_hellman_t *gmp_diffie_hellman_create(diffie_hellman_group_t group) this->public.dh.get_my_public_value = (void (*)(diffie_hellman_t *, chunk_t *)) get_my_public_value; this->public.dh.get_dh_group = (diffie_hellman_group_t (*)(diffie_hellman_t *)) get_dh_group; this->public.dh.destroy = (void (*)(diffie_hellman_t *)) destroy; - + /* private variables */ this->group = group; mpz_init(this->p); @@ -542,10 +542,10 @@ gmp_diffie_hellman_t *gmp_diffie_hellman_create(diffie_hellman_group_t group) mpz_init(this->xa); mpz_init(this->zz); mpz_init(this->g); - + this->computed = FALSE; - - /* find a modulus according to group */ + + /* find a modulus according to group */ if (set_modulus(this) != SUCCESS) { destroy(this); @@ -561,7 +561,7 @@ gmp_diffie_hellman_t *gmp_diffie_hellman_create(diffie_hellman_group_t group) ansi_x9_42 = lib->settings->get_int(lib->settings, "libstrongswan.dh_exponent_ansi_x9_42", TRUE); - exponent_len = (ansi_x9_42) ? this->p_len : this->opt_exponent_len; + exponent_len = (ansi_x9_42) ? this->p_len : this->opt_exponent_len; rng->allocate_bytes(rng, exponent_len, &random); rng->destroy(rng); @@ -575,7 +575,7 @@ gmp_diffie_hellman_t *gmp_diffie_hellman_create(diffie_hellman_group_t group) DBG2("size of DH secret exponent: %u bits", mpz_sizeinbase(this->xa, 2)); mpz_powm(this->ya, this->g, this->xa, this->p); - + return &this->public; } |