Botan
2.1.0
Crypto and TLS for C++11
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#include <cfb.h>
Public Member Functions | |
virtual bool | authenticated () const |
CFB_Decryption (BlockCipher *cipher, size_t feedback_bits) | |
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 size) override |
virtual std::string | provider () const |
void | reset () override |
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 () |
virtual size_t | tag_size () const |
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 n) const override |
Protected Member Functions | |
const BlockCipher & | cipher () const |
size_t | feedback () const |
secure_vector< uint8_t > & | keystream_buf () |
secure_vector< uint8_t > & | shift_register () |
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inline |
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inlinevirtualinherited |
Reimplemented in Botan::AEAD_Mode.
Definition at line 145 of file cipher_mode.h.
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inlineprotectedinherited |
Definition at line 43 of file cfb.h.
Referenced by Botan::CFB_Mode::default_nonce_length(), Botan::CFB_Mode::key_spec(), Botan::CFB_Mode::name(), Botan::CFB_Encryption::process(), process(), and Botan::CFB_Mode::valid_nonce_length().
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overridevirtualinherited |
Zeroise all state See also reset_msg()
Implements Botan::Cipher_Mode.
Definition at line 23 of file cfb.cpp.
References Botan::CFB_Mode::reset().
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
Definition at line 63 of file cfb.cpp.
References Botan::BlockCipher::block_size(), and Botan::CFB_Mode::cipher().
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inlineprotectedinherited |
Definition at line 45 of file cfb.h.
Referenced by Botan::CFB_Mode::CFB_Mode(), Botan::CFB_Mode::name(), Botan::CFB_Encryption::process(), process(), and Botan::CFB_Mode::update_granularity().
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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 151 of file cfb.cpp.
References Botan::Cipher_Mode::update().
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
Definition at line 58 of file cfb.cpp.
References Botan::CFB_Mode::cipher(), and Botan::SymmetricAlgorithm::key_spec().
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inlineprotectedinherited |
Definition at line 49 of file cfb.h.
Referenced by Botan::CFB_Encryption::process(), and process().
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
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overridevirtualinherited |
Implements Botan::Cipher_Mode.
Definition at line 35 of file cfb.cpp.
References Botan::CFB_Mode::cipher(), Botan::CFB_Mode::feedback(), Botan::SymmetricAlgorithm::name(), and Botan::ASN1::to_string().
Referenced by Botan::CFB_Mode::CFB_Mode().
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overridevirtualinherited |
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.
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overridevirtual |
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.
Definition at line 120 of file cfb.cpp.
References Botan::BlockCipher::block_size(), Botan::CFB_Mode::cipher(), Botan::copy_mem(), Botan::BlockCipher::encrypt(), Botan::CFB_Mode::feedback(), Botan::CFB_Mode::keystream_buf(), Botan::CT::min(), Botan::CFB_Mode::shift_register(), and Botan::xor_buf().
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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 29 of file cfb.cpp.
Referenced by Botan::CFB_Mode::clear().
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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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inlineprotectedinherited |
Definition at line 47 of file cfb.h.
Referenced by Botan::CFB_Encryption::process(), and process().
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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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inlinevirtualinherited |
Reimplemented in Botan::SIV_Mode, Botan::CCM_Mode, Botan::OCB_Mode, Botan::TLS::TLS_CBC_HMAC_AEAD_Mode, Botan::ChaCha20Poly1305_Mode, Botan::GCM_Mode, and Botan::EAX_Mode.
Definition at line 150 of file cipher_mode.h.
Referenced by botan_cipher_get_tag_length().
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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(), 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 48 of file cfb.cpp.
References Botan::CFB_Mode::feedback().
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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 68 of file cfb.cpp.
References Botan::CFB_Mode::cipher().