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Add a return value to prf_t.allocate_bytes()

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This commit is contained in:
Martin Willi
2012-07-16 14:53:34 +02:00
parent a7e6539135
commit ecc080b393
9 changed files with 92 additions and 43 deletions
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src/libcharon/sa/ikev2/keymat_v2.c
+26 -11
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@@ -260,7 +260,7 @@ METHOD(keymat_v2_t, derive_ike_keys, bool,
{
chunk_t skeyseed, key, secret, full_nonce, fixed_nonce, prf_plus_seed;
chunk_t spi_i, spi_r;
prf_plus_t *prf_plus;
prf_plus_t *prf_plus = NULL;
u_int16_t alg, key_size, int_alg;
prf_t *rekey_prf = NULL;
@@ -323,9 +323,11 @@ METHOD(keymat_v2_t, derive_ike_keys, bool,
{
/* SKEYSEED = prf(Ni | Nr, g^ir) */
this->prf->set_key(this->prf, fixed_nonce);
this->prf->allocate_bytes(this->prf, secret, &skeyseed);
this->prf->set_key(this->prf, skeyseed);
prf_plus = prf_plus_create(this->prf, TRUE, prf_plus_seed);
if (this->prf->allocate_bytes(this->prf, secret, &skeyseed))
{
this->prf->set_key(this->prf, skeyseed);
prf_plus = prf_plus_create(this->prf, TRUE, prf_plus_seed);
}
}
else
{
@@ -343,9 +345,11 @@ METHOD(keymat_v2_t, derive_ike_keys, bool,
}
secret = chunk_cat("mc", secret, full_nonce);
rekey_prf->set_key(rekey_prf, rekey_skd);
rekey_prf->allocate_bytes(rekey_prf, secret, &skeyseed);
rekey_prf->set_key(rekey_prf, skeyseed);
prf_plus = prf_plus_create(rekey_prf, TRUE, prf_plus_seed);
if (rekey_prf->allocate_bytes(rekey_prf, secret, &skeyseed))
{
rekey_prf->set_key(rekey_prf, skeyseed);
prf_plus = prf_plus_create(rekey_prf, TRUE, prf_plus_seed);
}
}
DBG4(DBG_IKE, "SKEYSEED %B", &skeyseed);
@@ -593,8 +597,10 @@ METHOD(keymat_v2_t, get_auth_octets, bool,
DBG3(DBG_IKE, "IDx' %B", &idx);
DBG3(DBG_IKE, "SK_p %B", &skp);
this->prf->set_key(this->prf, skp);
this->prf->allocate_bytes(this->prf, idx, &chunk);
if (!this->prf->allocate_bytes(this->prf, idx, &chunk))
{
return FALSE;
}
*octets = chunk_cat("ccm", ike_sa_init, nonce, chunk);
DBG3(DBG_IKE, "octets = message + nonce + prf(Sk_px, IDx') %B", octets);
return TRUE;
@@ -623,9 +629,18 @@ METHOD(keymat_v2_t, get_psk_sig, bool,
/* AUTH = prf(prf(Shared Secret,"Key Pad for IKEv2"), <msg octets>) */
key_pad = chunk_create(IKEV2_KEY_PAD, IKEV2_KEY_PAD_LENGTH);
this->prf->set_key(this->prf, secret);
this->prf->allocate_bytes(this->prf, key_pad, &key);
if (!this->prf->allocate_bytes(this->prf, key_pad, &key))
{
chunk_free(&octets);
return FALSE;
}
this->prf->set_key(this->prf, key);
this->prf->allocate_bytes(this->prf, octets, sig);
if (!this->prf->allocate_bytes(this->prf, octets, sig))
{
chunk_free(&key);
chunk_free(&octets);
return FALSE;
}
DBG4(DBG_IKE, "secret %B", &secret);
DBG4(DBG_IKE, "prf(secret, keypad) %B", &key);
DBG3(DBG_IKE, "AUTH = prf(prf(secret, keypad), octets) %B", sig);