Botan
2.1.0
Crypto and TLS for C++11
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#include <ccm.h>
Public Member Functions | |
bool | authenticated () const override |
CCM_Decryption (BlockCipher *cipher, size_t tag_size=16, size_t L=3) | |
void | clear () override |
size_t | default_nonce_length () const override |
void | finish (secure_vector< uint8_t > &final_block, size_t offset=0) override |
Key_Length_Specification | key_spec () const override |
size_t | minimum_final_size () const override |
std::string | name () const override |
size_t | output_length (size_t input_length) const override |
size_t | process (uint8_t buf[], size_t sz) override |
virtual std::string | provider () const |
void | reset () override |
template<typename Alloc > | |
void | set_ad (const std::vector< uint8_t, Alloc > &ad) |
void | set_associated_data (const uint8_t ad[], size_t ad_len) override |
template<typename Alloc > | |
void | set_associated_data_vec (const std::vector< uint8_t, Alloc > &ad) |
template<typename Alloc > | |
void | set_key (const std::vector< uint8_t, Alloc > &key) |
void | set_key (const SymmetricKey &key) |
void | set_key (const uint8_t key[], size_t length) |
template<typename Alloc > | |
void | start (const std::vector< uint8_t, Alloc > &nonce) |
void | start (const uint8_t nonce[], size_t nonce_len) |
void | start () |
size_t | tag_size () const override |
void | update (secure_vector< uint8_t > &buffer, size_t offset=0) |
size_t | update_granularity () const override |
bool | valid_keylength (size_t length) const |
bool | valid_nonce_length (size_t) const override |
Protected Member Functions | |
const secure_vector< uint8_t > & | ad_buf () const |
const BlockCipher & | cipher () const |
void | encode_length (size_t len, uint8_t out[]) |
secure_vector< uint8_t > | format_b0 (size_t msg_size) |
secure_vector< uint8_t > | format_c0 () |
void | inc (secure_vector< uint8_t > &C) |
size_t | L () const |
secure_vector< uint8_t > & | msg_buf () |
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inline |
cipher | a 128-bit block cipher |
tag_size | is how big the auth tag will be (even values between 4 and 16 are accepted) |
L | length of L parameter. The total message length must be less than 2**L bytes, and the nonce is 15-L bytes. |
Definition at line 112 of file ccm.h.
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inlineprotectedinherited |
Definition at line 57 of file ccm.h.
Referenced by Botan::CCM_Encryption::finish(), and finish().
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inlineoverridevirtualinherited |
Reimplemented from Botan::Cipher_Mode.
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inlineprotectedinherited |
Definition at line 51 of file ccm.h.
Referenced by Botan::CCM_Encryption::finish(), and finish().
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overridevirtualinherited |
Zeroise all state See also reset_msg()
Implements Botan::Cipher_Mode.
Definition at line 35 of file ccm.cpp.
References Botan::CCM_Mode::reset().
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overridevirtualinherited |
Reimplemented from Botan::AEAD_Mode.
Definition at line 58 of file ccm.cpp.
References Botan::CCM_Mode::L().
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protectedinherited |
Definition at line 116 of file ccm.cpp.
References BOTAN_ASSERT, Botan::get_byte(), and Botan::CCM_Mode::L().
Referenced by Botan::CCM_Mode::format_b0().
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overridevirtual |
Complete processing of a message.
final_block | in/out parameter which must be at least minimum_final_size() bytes, and will be set to any final output |
offset | an offset into final_block to begin processing |
Implements Botan::Cipher_Mode.
Definition at line 211 of file ccm.cpp.
References Botan::CCM_Mode::ad_buf(), BOTAN_ASSERT, Botan::CCM_Mode::cipher(), Botan::CCM_Mode::format_b0(), Botan::CCM_Mode::format_c0(), Botan::CCM_Mode::inc(), Botan::CCM_Mode::msg_buf(), Botan::same_mem(), Botan::CCM_Mode::tag_size(), and Botan::xor_buf().
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protectedinherited |
Definition at line 135 of file ccm.cpp.
References Botan::copy_mem(), Botan::CCM_Mode::encode_length(), Botan::CCM_Mode::L(), and Botan::CCM_Mode::tag_size().
Referenced by Botan::CCM_Encryption::finish(), and finish().
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protectedinherited |
Definition at line 148 of file ccm.cpp.
References Botan::copy_mem(), and Botan::CCM_Mode::L().
Referenced by Botan::CCM_Encryption::finish(), and finish().
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protectedinherited |
Definition at line 128 of file ccm.cpp.
Referenced by Botan::CCM_Encryption::finish(), and finish().
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
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inlineprotectedinherited |
Definition at line 49 of file ccm.h.
Referenced by Botan::CCM_Mode::default_nonce_length(), Botan::CCM_Mode::encode_length(), Botan::CCM_Mode::format_b0(), Botan::CCM_Mode::format_c0(), Botan::CCM_Mode::name(), and Botan::CCM_Mode::valid_nonce_length().
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inlineoverridevirtual |
Implements Botan::Cipher_Mode.
Definition at line 123 of file ccm.h.
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inlineprotectedinherited |
Definition at line 59 of file ccm.h.
Referenced by Botan::CCM_Encryption::finish(), and finish().
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
Definition at line 48 of file ccm.cpp.
References Botan::CCM_Mode::L(), Botan::CCM_Mode::tag_size(), and Botan::ASN1::to_string().
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inlineoverridevirtual |
Returns the size of the output if this transform is used to process a message with input_length bytes. Will throw if unable to give a precise answer.
Implements Botan::Cipher_Mode.
Definition at line 117 of file ccm.h.
References BOTAN_ASSERT.
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overridevirtualinherited |
Process message blocks
Input must be a multiple of update_granularity
Processes msg in place and returns bytes written. Normally this will be either msg_len (indicating the entire message was processed) or for certain AEAD modes zero (indicating that the mode requires the entire message be processed in one pass).
msg | the message to be processed |
msg_len | length of the message in bytes |
Implements Botan::Cipher_Mode.
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inlinevirtualinherited |
Reimplemented in Botan::GCM_Mode.
Definition at line 202 of file cipher_mode.h.
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overridevirtualinherited |
Resets just the message specific state and allows encrypting again under the existing key
Implements Botan::Cipher_Mode.
Definition at line 41 of file ccm.cpp.
Referenced by Botan::CCM_Mode::clear().
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inlineinherited |
Set associated data that is not included in the ciphertext but that should be authenticated. Must be called after set_key and before start.
ad | the associated data |
Definition at line 66 of file aead.h.
Referenced by Botan::TLS::write_record().
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overridevirtualinherited |
Set associated data that is not included in the ciphertext but that should be authenticated. Must be called after set_key and before start.
Unless reset by another call, the associated data is kept between messages. Thus, if the AD does not change, calling once (after set_key) is the optimum.
ad | the associated data |
ad_len | length of add in bytes |
Implements Botan::AEAD_Mode.
Definition at line 84 of file ccm.cpp.
References BOTAN_ASSERT, and Botan::get_byte().
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inlineinherited |
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inlineinherited |
Set the symmetric key of this transform
key | contains the key material |
Definition at line 172 of file cipher_mode.h.
Referenced by botan_cipher_set_key().
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inlineinherited |
Set the symmetric key of this transform
key | contains the key material |
Definition at line 181 of file cipher_mode.h.
References Botan::OctetString::begin(), and Botan::OctetString::length().
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inlineinherited |
Set the symmetric key of this transform
key | contains the key material |
length | in bytes of key param |
Definition at line 191 of file cipher_mode.h.
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inlineinherited |
Begin processing a message.
nonce | the per message nonce |
Definition at line 38 of file cipher_mode.h.
Referenced by botan_cipher_start(), and Botan::TLS::write_record().
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inlineinherited |
Begin processing a message.
nonce | the per message nonce |
nonce_len | length of nonce |
Definition at line 48 of file cipher_mode.h.
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inlineinherited |
Begin processing a message.
Definition at line 56 of file cipher_mode.h.
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inlineoverridevirtualinherited |
Reimplemented from Botan::Cipher_Mode.
Definition at line 44 of file ccm.h.
Referenced by Botan::CCM_Encryption::finish(), finish(), Botan::CCM_Mode::format_b0(), and Botan::CCM_Mode::name().
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inlineinherited |
Process some data. Input must be in size update_granularity() uint8_t blocks.
buffer | in/out parameter which will possibly be resized |
offset | an offset into blocks to begin processing |
Definition at line 81 of file cipher_mode.h.
References BOTAN_ASSERT.
Referenced by botan_cipher_update(), Botan::XTS_Encryption::finish(), Botan::ChaCha20Poly1305_Encryption::finish(), Botan::CBC_Encryption::finish(), Botan::CFB_Encryption::finish(), Botan::EAX_Encryption::finish(), Botan::XTS_Decryption::finish(), Botan::CFB_Decryption::finish(), Botan::CTS_Encryption::finish(), Botan::CBC_Decryption::finish(), Botan::TLS::TLS_CBC_HMAC_AEAD_Encryption::finish(), Botan::CTS_Decryption::finish(), and Botan::TLS::TLS_CBC_HMAC_AEAD_Decryption::finish().
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
Definition at line 63 of file ccm.cpp.
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inlineinherited |
Check whether a given key length is valid for this algorithm.
length | the key length to be checked. |
Definition at line 162 of file cipher_mode.h.
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
Definition at line 53 of file ccm.cpp.
References Botan::CCM_Mode::L().