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-rw-r--r--src/libcharon/sa/ikev1/keymat_v1.c8
-rw-r--r--src/libstrongswan/crypto/aead.c20
-rw-r--r--src/libstrongswan/crypto/aead.h11
-rw-r--r--src/libstrongswan/plugins/ccm/ccm_aead.c16
-rw-r--r--src/libstrongswan/plugins/gcm/gcm_aead.c15
-rw-r--r--src/libstrongswan/plugins/openssl/openssl_gcm.c15
6 files changed, 84 insertions, 1 deletions
diff --git a/src/libcharon/sa/ikev1/keymat_v1.c b/src/libcharon/sa/ikev1/keymat_v1.c
index 39e4cad20..bf1b0046c 100644
--- a/src/libcharon/sa/ikev1/keymat_v1.c
+++ b/src/libcharon/sa/ikev1/keymat_v1.c
@@ -196,6 +196,13 @@ METHOD(aead_t, get_iv_size, size_t,
return 0;
}
+METHOD(aead_t, get_iv_gen, iv_gen_t*,
+ private_aead_t *this)
+{
+ /* IVs are retrieved via keymat_v1.get_iv() */
+ return NULL;
+}
+
METHOD(aead_t, get_key_size, size_t,
private_aead_t *this)
{
@@ -304,6 +311,7 @@ static aead_t *create_aead(proposal_t *proposal, prf_t *prf, chunk_t skeyid_e)
.get_block_size = _get_block_size,
.get_icv_size = _get_icv_size,
.get_iv_size = _get_iv_size,
+ .get_iv_gen = _get_iv_gen,
.get_key_size = _get_key_size,
.set_key = _set_key,
.destroy = _aead_destroy,
diff --git a/src/libstrongswan/crypto/aead.c b/src/libstrongswan/crypto/aead.c
index 32a0e6759..afcc11fbe 100644
--- a/src/libstrongswan/crypto/aead.c
+++ b/src/libstrongswan/crypto/aead.c
@@ -1,4 +1,7 @@
/*
+ * Copyright (C) 2013 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
@@ -16,6 +19,7 @@
#include "aead.h"
#include <utils/debug.h>
+#include <crypto/iv/iv_gen_rand.h>
typedef struct private_aead_t private_aead_t;
@@ -35,9 +39,14 @@ struct private_aead_t {
crypter_t *crypter;
/**
- * draditional signer
+ * traditional signer
*/
signer_t *signer;
+
+ /**
+ * IV generator
+ */
+ iv_gen_t *iv_gen;
};
METHOD(aead_t, encrypt, bool,
@@ -126,6 +135,12 @@ METHOD(aead_t, get_iv_size, size_t,
return this->crypter->get_iv_size(this->crypter);
}
+METHOD(aead_t, get_iv_gen, iv_gen_t*,
+ private_aead_t *this)
+{
+ return this->iv_gen;
+}
+
METHOD(aead_t, get_key_size, size_t,
private_aead_t *this)
{
@@ -148,6 +163,7 @@ METHOD(aead_t, set_key, bool,
METHOD(aead_t, destroy, void,
private_aead_t *this)
{
+ this->iv_gen->destroy(this->iv_gen);
this->crypter->destroy(this->crypter);
this->signer->destroy(this->signer);
free(this);
@@ -167,12 +183,14 @@ aead_t *aead_create(crypter_t *crypter, signer_t *signer)
.get_block_size = _get_block_size,
.get_icv_size = _get_icv_size,
.get_iv_size = _get_iv_size,
+ .get_iv_gen = _get_iv_gen,
.get_key_size = _get_key_size,
.set_key = _set_key,
.destroy = _destroy,
},
.crypter = crypter,
.signer = signer,
+ .iv_gen = iv_gen_rand_create(),
);
return &this->public;
diff --git a/src/libstrongswan/crypto/aead.h b/src/libstrongswan/crypto/aead.h
index f3959f8f3..c887f53bb 100644
--- a/src/libstrongswan/crypto/aead.h
+++ b/src/libstrongswan/crypto/aead.h
@@ -1,4 +1,7 @@
/*
+ * Copyright (C) 2013 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
@@ -26,6 +29,7 @@ typedef struct aead_t aead_t;
#include <library.h>
#include <crypto/crypters/crypter.h>
#include <crypto/signers/signer.h>
+#include <crypto/iv/iv_gen.h>
/**
* Authenticated encryption / authentication decryption interface.
@@ -89,6 +93,13 @@ struct aead_t {
size_t (*get_iv_size)(aead_t *this);
/**
+ * Get the IV generator implementation
+ *
+ * @return IV generator
+ */
+ iv_gen_t *(*get_iv_gen)(aead_t *this);
+
+ /**
* Get the size of the key material (for encryption and authentication).
*
* @return key size in bytes
diff --git a/src/libstrongswan/plugins/ccm/ccm_aead.c b/src/libstrongswan/plugins/ccm/ccm_aead.c
index 0e2f9b75f..f5ad606b7 100644
--- a/src/libstrongswan/plugins/ccm/ccm_aead.c
+++ b/src/libstrongswan/plugins/ccm/ccm_aead.c
@@ -15,6 +15,8 @@
#include "ccm_aead.h"
+#include <crypto/iv/iv_gen_seq.h>
+
#define BLOCK_SIZE 16
#define SALT_SIZE 3
#define IV_SIZE 8
@@ -39,6 +41,11 @@ struct private_ccm_aead_t {
crypter_t *crypter;
/**
+ * IV generator.
+ */
+ iv_gen_t *iv_gen;
+
+ /**
* Length of the integrity check value
*/
size_t icv_size;
@@ -305,6 +312,12 @@ METHOD(aead_t, get_iv_size, size_t,
return IV_SIZE;
}
+METHOD(aead_t, get_iv_gen, iv_gen_t*
+ private_ccm_aead_t *this)
+{
+ return this->iv_gen;
+}
+
METHOD(aead_t, get_key_size, size_t,
private_ccm_aead_t *this)
{
@@ -323,6 +336,7 @@ METHOD(aead_t, destroy, void,
private_ccm_aead_t *this)
{
this->crypter->destroy(this->crypter);
+ this->iv_gen->destroy(this->iv_gen);
free(this);
}
@@ -384,12 +398,14 @@ ccm_aead_t *ccm_aead_create(encryption_algorithm_t algo, size_t key_size)
.get_block_size = _get_block_size,
.get_icv_size = _get_icv_size,
.get_iv_size = _get_iv_size,
+ .get_iv_gen = _get_iv_gen,
.get_key_size = _get_key_size,
.set_key = _set_key,
.destroy = _destroy,
},
},
.crypter = lib->crypto->create_crypter(lib->crypto, algo, key_size),
+ .iv_gen = iv_gen_seq_create(),
.icv_size = icv_size,
);
diff --git a/src/libstrongswan/plugins/gcm/gcm_aead.c b/src/libstrongswan/plugins/gcm/gcm_aead.c
index 79ee65d98..ba5f2e4b3 100644
--- a/src/libstrongswan/plugins/gcm/gcm_aead.c
+++ b/src/libstrongswan/plugins/gcm/gcm_aead.c
@@ -16,6 +16,7 @@
#include "gcm_aead.h"
#include <limits.h>
+#include <crypto/iv/iv_gen_seq.h>
#define BLOCK_SIZE 16
#define NONCE_SIZE 12
@@ -40,6 +41,11 @@ struct private_gcm_aead_t {
crypter_t *crypter;
/**
+ * IV generator.
+ */
+ iv_gen_t *iv_gen;
+
+ /**
* Size of the integrity check value
*/
size_t icv_size;
@@ -337,6 +343,12 @@ METHOD(aead_t, get_iv_size, size_t,
return IV_SIZE;
}
+METHOD(aead_t, get_iv_gen, iv_gen_t*,
+ private_gcm_aead_t *this)
+{
+ return this->iv_gen;
+}
+
METHOD(aead_t, get_key_size, size_t,
private_gcm_aead_t *this)
{
@@ -356,6 +368,7 @@ METHOD(aead_t, destroy, void,
private_gcm_aead_t *this)
{
this->crypter->destroy(this->crypter);
+ this->iv_gen->destroy(this->iv_gen);
free(this);
}
@@ -405,12 +418,14 @@ gcm_aead_t *gcm_aead_create(encryption_algorithm_t algo, size_t key_size)
.get_block_size = _get_block_size,
.get_icv_size = _get_icv_size,
.get_iv_size = _get_iv_size,
+ .get_iv_gen = _get_iv_gen,
.get_key_size = _get_key_size,
.set_key = _set_key,
.destroy = _destroy,
},
},
.crypter = lib->crypto->create_crypter(lib->crypto, algo, key_size),
+ .iv_gen = iv_gen_seq_create(),
.icv_size = icv_size,
);
diff --git a/src/libstrongswan/plugins/openssl/openssl_gcm.c b/src/libstrongswan/plugins/openssl/openssl_gcm.c
index 89d1cd589..842111bd3 100644
--- a/src/libstrongswan/plugins/openssl/openssl_gcm.c
+++ b/src/libstrongswan/plugins/openssl/openssl_gcm.c
@@ -20,6 +20,7 @@
#include "openssl_gcm.h"
#include <openssl/evp.h>
+#include <crypto/iv/iv_gen_seq.h>
/** as defined in RFC 4106 */
#define IV_LEN 8
@@ -54,6 +55,11 @@ struct private_aead_t {
size_t icv_size;
/**
+ * IV generator
+ */
+ iv_gen_t *iv_gen;
+
+ /**
* The cipher to use
*/
const EVP_CIPHER *cipher;
@@ -161,6 +167,12 @@ METHOD(aead_t, get_iv_size, size_t,
return IV_LEN;
}
+METHOD(aead_t, get_iv_gen, iv_gen_t*,
+ private_aead_t *this)
+{
+ return this->iv_gen;
+}
+
METHOD(aead_t, get_key_size, size_t,
private_aead_t *this)
{
@@ -183,6 +195,7 @@ METHOD(aead_t, destroy, void,
private_aead_t *this)
{
chunk_clear(&this->key);
+ this->iv_gen->destroy(this->iv_gen);
free(this);
}
@@ -200,6 +213,7 @@ aead_t *openssl_gcm_create(encryption_algorithm_t algo, size_t key_size)
.get_block_size = _get_block_size,
.get_icv_size = _get_icv_size,
.get_iv_size = _get_iv_size,
+ .get_iv_gen = _get_iv_gen,
.get_key_size = _get_key_size,
.set_key = _set_key,
.destroy = _destroy,
@@ -258,6 +272,7 @@ aead_t *openssl_gcm_create(encryption_algorithm_t algo, size_t key_size)
}
this->key = chunk_alloc(key_size);
+ this->iv_gen = iv_gen_seq_create();
return &this->public;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-23 04:37:23 +0000