removed trailing spaces ([[:space:]]+$)
This commit is contained in:
@@ -23,7 +23,7 @@ typedef struct private_xcbc_t private_xcbc_t;
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/**
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* Private data of a xcbc_t object.
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*
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*
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* The variable names are the same as in the RFC.
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*/
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struct private_xcbc_t {
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@@ -31,42 +31,42 @@ struct private_xcbc_t {
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* Public xcbc_t interface.
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*/
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xcbc_t xcbc;
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/**
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* Block size, in bytes
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*/
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u_int8_t b;
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/**
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* crypter using k1
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*/
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crypter_t *k1;
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/**
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* k2
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*/
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u_int8_t *k2;
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/**
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* k3
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*/
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u_int8_t *k3;
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/**
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* E
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*/
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u_int8_t *e;
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/**
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* remaining, unprocessed bytes in append mode
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*/
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u_int8_t *remaining;
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/**
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* number of bytes in remaining
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*/
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int remaining_bytes;
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/**
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* TRUE if we have zero bytes to xcbc in final()
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*/
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@@ -79,34 +79,34 @@ struct private_xcbc_t {
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static void update(private_xcbc_t *this, chunk_t data)
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{
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chunk_t iv;
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if (data.len)
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{
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this->zero = FALSE;
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}
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if (this->remaining_bytes + data.len <= this->b)
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{ /* no complete block, just copy into remaining */
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memcpy(this->remaining + this->remaining_bytes, data.ptr, data.len);
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this->remaining_bytes += data.len;
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return;
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}
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iv = chunk_alloca(this->b);
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memset(iv.ptr, 0, iv.len);
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/* (3) For each block M[i], where i = 1 ... n-1:
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* XOR M[i] with E[i-1], then encrypt the result with Key K1,
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* yielding E[i].
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*/
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/* append data to remaining bytes, process block M[1] */
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memcpy(this->remaining + this->remaining_bytes, data.ptr,
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this->b - this->remaining_bytes);
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data = chunk_skip(data, this->b - this->remaining_bytes);
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memxor(this->e, this->remaining, this->b);
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this->k1->encrypt(this->k1, chunk_create(this->e, this->b), iv, NULL);
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/* process blocks M[2] ... M[n-1] */
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while (data.len > this->b)
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{
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@@ -115,7 +115,7 @@ static void update(private_xcbc_t *this, chunk_t data)
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memxor(this->e, this->remaining, this->b);
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this->k1->encrypt(this->k1, chunk_create(this->e, this->b), iv, NULL);
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}
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/* store remaining bytes of block M[n] */
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memcpy(this->remaining, data.ptr, data.len);
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this->remaining_bytes = data.len;
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@@ -127,10 +127,10 @@ static void update(private_xcbc_t *this, chunk_t data)
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static void final(private_xcbc_t *this, u_int8_t *out)
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{
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chunk_t iv;
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iv = chunk_alloca(this->b);
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memset(iv.ptr, 0, iv.len);
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/* (4) For block M[n]: */
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if (this->remaining_bytes == this->b && !this->zero)
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{
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@@ -165,9 +165,9 @@ static void final(private_xcbc_t *this, u_int8_t *out)
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memxor(this->e, this->k3, this->b);
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this->k1->encrypt(this->k1, chunk_create(this->e, this->b), iv, NULL);
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}
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memcpy(out, this->e, this->b);
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/* (2) Define E[0] = 0x00000000000000000000000000000000 */
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memset(this->e, 0, this->b);
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this->remaining_bytes = 0;
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@@ -181,13 +181,13 @@ static void get_mac(private_xcbc_t *this, chunk_t data, u_int8_t *out)
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{
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/* update E, do not process last block */
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update(this, data);
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if (out)
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{ /* if not in append mode, process last block and output result */
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final(this, out);
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}
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}
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/**
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* Implementation of xcbc_t.get_block_size.
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*/
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@@ -225,8 +225,8 @@ static void set_key(private_xcbc_t *this, chunk_t key)
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k1 = chunk_alloca(this->b);
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iv = chunk_alloca(this->b);
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memset(iv.ptr, 0, iv.len);
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/*
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/*
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* (1) Derive 3 128-bit keys (K1, K2 and K3) from the 128-bit secret
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* key K, as follows:
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* K1 = 0x01010101010101010101010101010101 encrypted with Key K
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@@ -263,7 +263,7 @@ xcbc_t *xcbc_create(encryption_algorithm_t algo, size_t key_size)
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{
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private_xcbc_t *this;
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crypter_t *crypter;
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crypter = lib->crypto->create_crypter(lib->crypto, algo, key_size);
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if (!crypter)
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{
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@@ -275,13 +275,13 @@ xcbc_t *xcbc_create(encryption_algorithm_t algo, size_t key_size)
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crypter->destroy(crypter);
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return NULL;
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}
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this = malloc_thing(private_xcbc_t);
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this->xcbc.get_mac = (void (*)(xcbc_t *,chunk_t,u_int8_t*))get_mac;
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this->xcbc.get_block_size = (size_t (*)(xcbc_t *))get_block_size;
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this->xcbc.set_key = (void (*)(xcbc_t *,chunk_t))set_key;
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this->xcbc.destroy = (void (*)(xcbc_t *))destroy;
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this->b = crypter->get_block_size(crypter);
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this->k1 = crypter;
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this->k2 = malloc(this->b);
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@@ -32,34 +32,34 @@ typedef struct xcbc_t xcbc_t;
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* described in RFC3566.
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*/
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struct xcbc_t {
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/**
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* Generate message authentication code.
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*
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*
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* If buffer is NULL, no result is given back. A next call will
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* append the data to already supplied data. If buffer is not NULL,
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* append the data to already supplied data. If buffer is not NULL,
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* the mac of all apended data is calculated, returned and the
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* state of the xcbc_t is reseted.
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*
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*
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* @param data chunk of data to authenticate
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* @param buffer pointer where the generated bytes will be written
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*/
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void (*get_mac) (xcbc_t *this, chunk_t data, u_int8_t *buffer);
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/**
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* Get the block size of this xcbc_t object.
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*
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*
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* @return block size in bytes
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*/
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size_t (*get_block_size) (xcbc_t *this);
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/**
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* Set the key for this xcbc_t object.
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*
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*
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* @param key key to set
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*/
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void (*set_key) (xcbc_t *this, chunk_t key);
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/**
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* Destroys a xcbc_t object.
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*/
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@@ -68,7 +68,7 @@ struct xcbc_t {
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/**
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* Creates a new xcbc_t object.
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*
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*
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* @param algo underlying crypto algorithm
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* @param key_size key size to use, if required for algorithm
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* @return xcbc_t object, NULL if not supported
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@@ -50,12 +50,12 @@ static void destroy(private_xcbc_plugin_t *this)
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plugin_t *plugin_create()
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{
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private_xcbc_plugin_t *this = malloc_thing(private_xcbc_plugin_t);
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this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
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lib->crypto->add_prf(lib->crypto, PRF_AES128_XCBC,
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lib->crypto->add_prf(lib->crypto, PRF_AES128_XCBC,
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(prf_constructor_t)xcbc_prf_create);
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lib->crypto->add_signer(lib->crypto, AUTH_AES_XCBC_96,
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lib->crypto->add_signer(lib->crypto, AUTH_AES_XCBC_96,
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(signer_constructor_t)xcbc_signer_create);
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return &this->public.plugin;
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@@ -27,8 +27,8 @@ struct private_xcbc_prf_t {
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/**
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* Public xcbc_prf_t interface.
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*/
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xcbc_prf_t public;
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xcbc_prf_t public;
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/**
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* xcbc to use for generation.
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*/
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@@ -100,7 +100,7 @@ xcbc_prf_t *xcbc_prf_create(pseudo_random_function_t algo)
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{
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private_xcbc_prf_t *this;
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xcbc_t *xcbc;
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switch (algo)
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{
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case PRF_AES128_XCBC:
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@@ -113,17 +113,17 @@ xcbc_prf_t *xcbc_prf_create(pseudo_random_function_t algo)
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{
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return NULL;
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}
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this = malloc_thing(private_xcbc_prf_t);
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this->xcbc = xcbc;
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this->public.prf_interface.get_bytes = (void (*) (prf_t *,chunk_t,u_int8_t*))get_bytes;
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this->public.prf_interface.allocate_bytes = (void (*) (prf_t*,chunk_t,chunk_t*))allocate_bytes;
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this->public.prf_interface.get_block_size = (size_t (*) (prf_t*))get_block_size;
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this->public.prf_interface.get_key_size = (size_t (*) (prf_t*))get_key_size;
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this->public.prf_interface.set_key = (void (*) (prf_t *,chunk_t))set_key;
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this->public.prf_interface.destroy = (void (*) (prf_t *))destroy;
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return &this->public;
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}
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@@ -27,12 +27,12 @@ typedef struct xcbc_prf_t xcbc_prf_t;
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/**
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* Implementation of prf_t on CBC block cipher using XCBC, RFC3664/RFC4434.
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*
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*
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* This simply wraps a xcbc_t in a prf_t. More a question of
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* interface matching.
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*/
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struct xcbc_prf_t {
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/**
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* Generic prf_t interface for this xcbc_prf_t class.
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*/
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@@ -41,7 +41,7 @@ struct xcbc_prf_t {
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/**
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* Creates a new xcbc_prf_t object.
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*
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*
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* @param algo algorithm to implement
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* @return xcbc_prf_t object, NULL if hash not supported
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*/
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@@ -29,12 +29,12 @@ struct private_xcbc_signer_t {
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* Public interface of xcbc_signer_t.
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*/
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xcbc_signer_t public;
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/**
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* Assigned xcbc function.
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*/
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xcbc_t *xcbc;
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/**
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* Block size (truncation of XCBC MAC)
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*/
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@@ -54,7 +54,7 @@ static void get_signature(private_xcbc_signer_t *this,
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else
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{
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u_int8_t mac[this->xcbc->get_block_size(this->xcbc)];
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this->xcbc->get_mac(this->xcbc, data, mac);
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memcpy(buffer, mac, this->block_size);
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}
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@@ -73,12 +73,12 @@ static void allocate_signature (private_xcbc_signer_t *this,
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else
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{
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u_int8_t mac[this->xcbc->get_block_size(this->xcbc)];
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this->xcbc->get_mac(this->xcbc, data, mac);
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chunk->ptr = malloc(this->block_size);
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chunk->len = this->block_size;
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memcpy(chunk->ptr, mac, this->block_size);
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}
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}
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@@ -90,12 +90,12 @@ static bool verify_signature(private_xcbc_signer_t *this,
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chunk_t data, chunk_t signature)
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{
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u_int8_t mac[this->xcbc->get_block_size(this->xcbc)];
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if (signature.len != this->block_size)
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{
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return FALSE;
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}
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this->xcbc->get_mac(this->xcbc, data, mac);
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return memeq(signature.ptr, mac, this->block_size);
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}
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@@ -142,7 +142,7 @@ xcbc_signer_t *xcbc_signer_create(integrity_algorithm_t algo)
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private_xcbc_signer_t *this;
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size_t trunc;
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xcbc_t *xcbc;
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switch (algo)
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{
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case AUTH_AES_XCBC_96:
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@@ -156,11 +156,11 @@ xcbc_signer_t *xcbc_signer_create(integrity_algorithm_t algo)
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{
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return NULL;
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}
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this = malloc_thing(private_xcbc_signer_t);
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this->xcbc = xcbc;
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this->block_size = min(trunc, xcbc->get_block_size(xcbc));
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/* interface functions */
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this->public.signer_interface.get_signature = (void (*) (signer_t*, chunk_t, u_int8_t*))get_signature;
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this->public.signer_interface.allocate_signature = (void (*) (signer_t*, chunk_t, chunk_t*))allocate_signature;
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@@ -169,7 +169,7 @@ xcbc_signer_t *xcbc_signer_create(integrity_algorithm_t algo)
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this->public.signer_interface.get_block_size = (size_t (*) (signer_t*))get_block_size;
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this->public.signer_interface.set_key = (void (*) (signer_t*,chunk_t))set_key;
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this->public.signer_interface.destroy = (void (*) (signer_t*))destroy;
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return &this->public;
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}
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@@ -29,7 +29,7 @@ typedef struct xcbc_signer_t xcbc_signer_t;
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* Implementation of signer_t based on CBC symmetric cypher. XCBC, RFC3566.
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*/
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struct xcbc_signer_t {
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/**
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* generic signer_t interface for this signer
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*/
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