Botan 3.3.0
Crypto and TLS for C&
Public Member Functions | Static Public Member Functions | Protected Member Functions | Friends | List of all members
Botan::BLAKE2b Class Referencefinal

#include <blake2b.h>

Inheritance diagram for Botan::BLAKE2b:
Botan::HashFunction Botan::SymmetricAlgorithm Botan::Buffered_Computation

Public Member Functions

 BLAKE2b (size_t output_bits=512)
 
void clear () override
 
HashFunctionclone () const
 
std::unique_ptr< HashFunctioncopy_state () const override
 
template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T final ()
 
void final (std::span< uint8_t > out)
 
template<concepts::resizable_byte_buffer T>
void final (T &out)
 
void final (uint8_t out[])
 
std::vector< uint8_t > final_stdvec ()
 
bool has_keying_material () const override
 
size_t hash_block_size () const override
 
size_t key_size () const
 
Key_Length_Specification key_spec () const override
 
size_t maximum_keylength () const
 
size_t minimum_keylength () const
 
std::string name () const override
 
std::unique_ptr< HashFunctionnew_object () const override
 
size_t output_length () const override
 
template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T process (const uint8_t in[], size_t length)
 
template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T process (std::span< const uint8_t > in)
 
template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T process (std::string_view in)
 
virtual std::string provider () const
 
void set_key (const SymmetricKey &key)
 
void set_key (const uint8_t key[], size_t length)
 
void set_key (std::span< const uint8_t > key)
 
void update (const uint8_t in[], size_t length)
 
void update (std::span< const uint8_t > in)
 
void update (std::string_view str)
 
void update (uint8_t in)
 
void update_be (uint16_t val)
 
void update_be (uint32_t val)
 
void update_be (uint64_t val)
 
void update_le (uint16_t val)
 
void update_le (uint32_t val)
 
void update_le (uint64_t val)
 
bool valid_keylength (size_t length) const
 

Static Public Member Functions

static std::unique_ptr< HashFunctioncreate (std::string_view algo_spec, std::string_view provider="")
 
static std::unique_ptr< HashFunctioncreate_or_throw (std::string_view algo_spec, std::string_view provider="")
 
static std::vector< std::string > providers (std::string_view algo_spec)
 

Protected Member Functions

void add_data (std::span< const uint8_t > input) override
 
void assert_key_material_set () const
 
void assert_key_material_set (bool predicate) const
 
void final_result (std::span< uint8_t > out) override
 
void key_schedule (std::span< const uint8_t > key) override
 

Friends

class BLAKE2bMAC
 

Detailed Description

BLAKE2B

Definition at line 26 of file blake2b.h.

Constructor & Destructor Documentation

◆ BLAKE2b()

Botan::BLAKE2b::BLAKE2b ( size_t output_bits = 512)
explicit
Parameters
output_bitsthe output size of BLAKE2b in bits

Definition at line 36 of file blake2b.cpp.

36 : m_output_bits(output_bits), m_H(blake2b_IV.size()), m_T(), m_F(), m_key_size(0) {
37 if(output_bits == 0 || output_bits > 512 || output_bits % 8 != 0) {
38 throw Invalid_Argument("Bad output bits size for BLAKE2b");
39 }
40
41 state_init();
42}

Member Function Documentation

◆ add_data()

void Botan::BLAKE2b::add_data ( std::span< const uint8_t > input)
overrideprotectedvirtual

Add more data to the computation

Parameters
inputis an input buffer

Implements Botan::Buffered_Computation.

Definition at line 141 of file blake2b.cpp.

141 {
142 BufferSlicer in(input);
143
144 while(!in.empty()) {
145 if(const auto one_block = m_buffer.handle_unaligned_data(in)) {
146 compress(one_block->data(), 1, BLAKE2B_BLOCKBYTES);
147 }
148
149 if(m_buffer.in_alignment()) {
150 const auto [aligned_data, full_blocks] = m_buffer.aligned_data_to_process(in);
151 if(full_blocks > 0) {
152 compress(aligned_data.data(), full_blocks, BLAKE2B_BLOCKBYTES);
153 }
154 }
155 }
156}
std::tuple< std::span< const uint8_t >, size_t > aligned_data_to_process(BufferSlicer &slicer) const
std::optional< std::span< const T > > handle_unaligned_data(BufferSlicer &slicer)
constexpr size_t BLAKE2B_BLOCKBYTES
Definition blake2b.h:21

References Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::aligned_data_to_process(), Botan::BLAKE2B_BLOCKBYTES, Botan::BufferSlicer::empty(), Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::handle_unaligned_data(), and Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::in_alignment().

◆ assert_key_material_set() [1/2]

void Botan::SymmetricAlgorithm::assert_key_material_set ( ) const
inlineprotectedinherited

Definition at line 139 of file sym_algo.h.

virtual bool has_keying_material() const =0
void assert_key_material_set() const
Definition sym_algo.h:139

References Botan::SymmetricAlgorithm::assert_key_material_set().

Referenced by Botan::SymmetricAlgorithm::assert_key_material_set(), Botan::Salsa20::cipher_bytes(), Botan::AES_128::decrypt_n(), Botan::AES_192::decrypt_n(), Botan::AES_256::decrypt_n(), Botan::ARIA_128::decrypt_n(), Botan::ARIA_192::decrypt_n(), Botan::ARIA_256::decrypt_n(), Botan::Blowfish::decrypt_n(), Botan::Camellia_128::decrypt_n(), Botan::Camellia_192::decrypt_n(), Botan::Camellia_256::decrypt_n(), Botan::CAST_128::decrypt_n(), Botan::DES::decrypt_n(), Botan::TripleDES::decrypt_n(), Botan::GOST_28147_89::decrypt_n(), Botan::IDEA::decrypt_n(), Botan::Kuznyechik::decrypt_n(), Botan::Lion::decrypt_n(), Botan::Noekeon::decrypt_n(), Botan::SEED::decrypt_n(), Botan::Serpent::decrypt_n(), Botan::SHACAL2::decrypt_n(), Botan::SM4::decrypt_n(), Botan::Threefish_512::decrypt_n(), Botan::Twofish::decrypt_n(), Botan::AES_128::encrypt_n(), Botan::AES_192::encrypt_n(), Botan::AES_256::encrypt_n(), Botan::ARIA_128::encrypt_n(), Botan::ARIA_192::encrypt_n(), Botan::ARIA_256::encrypt_n(), Botan::Blowfish::encrypt_n(), Botan::Camellia_128::encrypt_n(), Botan::Camellia_192::encrypt_n(), Botan::Camellia_256::encrypt_n(), Botan::CAST_128::encrypt_n(), Botan::DES::encrypt_n(), Botan::TripleDES::encrypt_n(), Botan::GOST_28147_89::encrypt_n(), Botan::IDEA::encrypt_n(), Botan::Kuznyechik::encrypt_n(), Botan::Lion::encrypt_n(), Botan::Noekeon::encrypt_n(), Botan::SEED::encrypt_n(), Botan::Serpent::encrypt_n(), Botan::SHACAL2::encrypt_n(), Botan::SM4::encrypt_n(), Botan::Threefish_512::encrypt_n(), Botan::Twofish::encrypt_n(), Botan::GHASH::final(), Botan::GHASH::ghash_update(), Botan::ChaCha::seek(), Botan::CTR_BE::seek(), Botan::Salsa20::seek(), Botan::OCB_Mode::set_associated_data_n(), Botan::Salsa20::set_iv_bytes(), Botan::GHASH::update(), and Botan::GHASH::update_associated_data().

◆ assert_key_material_set() [2/2]

void Botan::SymmetricAlgorithm::assert_key_material_set ( bool predicate) const
inlineprotectedinherited

Definition at line 141 of file sym_algo.h.

141 {
142 if(!predicate) {
143 throw_key_not_set_error();
144 }
145 }

◆ clear()

void Botan::BLAKE2b::clear ( )
overridevirtual

Reset the state.

Implements Botan::HashFunction.

Definition at line 203 of file blake2b.cpp.

203 {
204 zeroise(m_H);
205 m_buffer.clear();
206 zeroise(m_padded_key_buffer);
207 m_key_size = 0;
208 state_init();
209}
void zeroise(std::vector< T, Alloc > &vec)
Definition secmem.h:108

References Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::clear(), and Botan::zeroise().

Referenced by Botan::BLAKE2bMAC::clear().

◆ clone()

HashFunction * Botan::HashFunction::clone ( ) const
inlineinherited
Returns
new object representing the same algorithm as *this

Definition at line 87 of file hash.h.

87{ return this->new_object().release(); }
virtual std::unique_ptr< HashFunction > new_object() const =0

◆ copy_state()

std::unique_ptr< HashFunction > Botan::BLAKE2b::copy_state ( ) const
overridevirtual

Return a new hash object with the same state as *this. This allows computing the hash of several messages with a common prefix more efficiently than would otherwise be possible.

This function should be called clone but that was already used for the case of returning an uninitialized object.

Returns
new hash object

Implements Botan::HashFunction.

Definition at line 180 of file blake2b.cpp.

180 {
181 return std::make_unique<BLAKE2b>(*this);
182}

◆ create()

std::unique_ptr< HashFunction > Botan::HashFunction::create ( std::string_view algo_spec,
std::string_view provider = "" )
staticinherited

Create an instance based on a name, or return null if the algo/provider combination cannot be found. If provider is empty then best available is chosen.

Definition at line 107 of file hash.cpp.

107 {
108#if defined(BOTAN_HAS_COMMONCRYPTO)
109 if(provider.empty() || provider == "commoncrypto") {
110 if(auto hash = make_commoncrypto_hash(algo_spec))
111 return hash;
112
113 if(!provider.empty())
114 return nullptr;
115 }
116#endif
117
118 if(provider.empty() == false && provider != "base") {
119 return nullptr; // unknown provider
120 }
121
122#if defined(BOTAN_HAS_SHA1)
123 if(algo_spec == "SHA-1") {
124 return std::make_unique<SHA_1>();
125 }
126#endif
127
128#if defined(BOTAN_HAS_SHA2_32)
129 if(algo_spec == "SHA-224") {
130 return std::make_unique<SHA_224>();
131 }
132
133 if(algo_spec == "SHA-256") {
134 return std::make_unique<SHA_256>();
135 }
136#endif
137
138#if defined(BOTAN_HAS_SHA2_64)
139 if(algo_spec == "SHA-384") {
140 return std::make_unique<SHA_384>();
141 }
142
143 if(algo_spec == "SHA-512") {
144 return std::make_unique<SHA_512>();
145 }
146
147 if(algo_spec == "SHA-512-256") {
148 return std::make_unique<SHA_512_256>();
149 }
150#endif
151
152#if defined(BOTAN_HAS_RIPEMD_160)
153 if(algo_spec == "RIPEMD-160") {
154 return std::make_unique<RIPEMD_160>();
155 }
156#endif
157
158#if defined(BOTAN_HAS_WHIRLPOOL)
159 if(algo_spec == "Whirlpool") {
160 return std::make_unique<Whirlpool>();
161 }
162#endif
163
164#if defined(BOTAN_HAS_MD5)
165 if(algo_spec == "MD5") {
166 return std::make_unique<MD5>();
167 }
168#endif
169
170#if defined(BOTAN_HAS_MD4)
171 if(algo_spec == "MD4") {
172 return std::make_unique<MD4>();
173 }
174#endif
175
176#if defined(BOTAN_HAS_GOST_34_11)
177 if(algo_spec == "GOST-R-34.11-94" || algo_spec == "GOST-34.11") {
178 return std::make_unique<GOST_34_11>();
179 }
180#endif
181
182#if defined(BOTAN_HAS_ADLER32)
183 if(algo_spec == "Adler32") {
184 return std::make_unique<Adler32>();
185 }
186#endif
187
188#if defined(BOTAN_HAS_CRC24)
189 if(algo_spec == "CRC24") {
190 return std::make_unique<CRC24>();
191 }
192#endif
193
194#if defined(BOTAN_HAS_CRC32)
195 if(algo_spec == "CRC32") {
196 return std::make_unique<CRC32>();
197 }
198#endif
199
200#if defined(BOTAN_HAS_STREEBOG)
201 if(algo_spec == "Streebog-256") {
202 return std::make_unique<Streebog>(256);
203 }
204 if(algo_spec == "Streebog-512") {
205 return std::make_unique<Streebog>(512);
206 }
207#endif
208
209#if defined(BOTAN_HAS_SM3)
210 if(algo_spec == "SM3") {
211 return std::make_unique<SM3>();
212 }
213#endif
214
215 const SCAN_Name req(algo_spec);
216
217#if defined(BOTAN_HAS_SKEIN_512)
218 if(req.algo_name() == "Skein-512") {
219 return std::make_unique<Skein_512>(req.arg_as_integer(0, 512), req.arg(1, ""));
220 }
221#endif
222
223#if defined(BOTAN_HAS_BLAKE2B)
224 if(req.algo_name() == "Blake2b" || req.algo_name() == "BLAKE2b") {
225 return std::make_unique<BLAKE2b>(req.arg_as_integer(0, 512));
226 }
227#endif
228
229#if defined(BOTAN_HAS_BLAKE2S)
230 if(req.algo_name() == "Blake2s" || req.algo_name() == "BLAKE2s") {
231 return std::make_unique<BLAKE2s>(req.arg_as_integer(0, 256));
232 }
233#endif
234
235#if defined(BOTAN_HAS_KECCAK)
236 if(req.algo_name() == "Keccak-1600") {
237 return std::make_unique<Keccak_1600>(req.arg_as_integer(0, 512));
238 }
239#endif
240
241#if defined(BOTAN_HAS_SHA3)
242 if(req.algo_name() == "SHA-3") {
243 return std::make_unique<SHA_3>(req.arg_as_integer(0, 512));
244 }
245#endif
246
247#if defined(BOTAN_HAS_SHAKE)
248 if(req.algo_name() == "SHAKE-128" && req.arg_count() == 1) {
249 return std::make_unique<SHAKE_128>(req.arg_as_integer(0));
250 }
251 if(req.algo_name() == "SHAKE-256" && req.arg_count() == 1) {
252 return std::make_unique<SHAKE_256>(req.arg_as_integer(0));
253 }
254#endif
255
256#if defined(BOTAN_HAS_PARALLEL_HASH)
257 if(req.algo_name() == "Parallel") {
258 std::vector<std::unique_ptr<HashFunction>> hashes;
259
260 for(size_t i = 0; i != req.arg_count(); ++i) {
261 auto h = HashFunction::create(req.arg(i));
262 if(!h) {
263 return nullptr;
264 }
265 hashes.push_back(std::move(h));
266 }
267
268 return std::make_unique<Parallel>(hashes);
269 }
270#endif
271
272#if defined(BOTAN_HAS_TRUNCATED_HASH)
273 if(req.algo_name() == "Truncated" && req.arg_count() == 2) {
274 auto hash = HashFunction::create(req.arg(0));
275 if(!hash) {
276 return nullptr;
277 }
278
279 return std::make_unique<Truncated_Hash>(std::move(hash), req.arg_as_integer(1));
280 }
281#endif
282
283#if defined(BOTAN_HAS_COMB4P)
284 if(req.algo_name() == "Comb4P" && req.arg_count() == 2) {
285 auto h1 = HashFunction::create(req.arg(0));
286 auto h2 = HashFunction::create(req.arg(1));
287
288 if(h1 && h2) {
289 return std::make_unique<Comb4P>(std::move(h1), std::move(h2));
290 }
291 }
292#endif
293
294 return nullptr;
295}
virtual std::string provider() const
Definition hash.h:49
static std::unique_ptr< HashFunction > create(std::string_view algo_spec, std::string_view provider="")
Definition hash.cpp:107
std::unique_ptr< HashFunction > make_commoncrypto_hash(std::string_view name)

References Botan::SCAN_Name::algo_name(), Botan::SCAN_Name::arg(), Botan::SCAN_Name::arg_as_integer(), Botan::SCAN_Name::arg_count(), Botan::HashFunction::create(), Botan::make_commoncrypto_hash(), and Botan::HashFunction::provider().

Referenced by botan_hash_init(), Botan::EME::create(), Botan::EMSA::create(), Botan::BlockCipher::create(), Botan::HashFunction::create(), Botan::KDF::create(), Botan::MessageAuthenticationCode::create(), Botan::PBKDF::create(), Botan::PasswordHashFamily::create(), Botan::HashFunction::create_or_throw(), Botan::Certificate_Store_In_Memory::find_cert_by_pubkey_sha1(), Botan::Certificate_Store_In_Memory::find_cert_by_raw_subject_dn_sha256(), and Botan::X942_PRF::kdf().

◆ create_or_throw()

std::unique_ptr< HashFunction > Botan::HashFunction::create_or_throw ( std::string_view algo_spec,
std::string_view provider = "" )
staticinherited

◆ final() [1/4]

template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T Botan::Buffered_Computation::final ( )
inlineinherited

Complete the computation and retrieve the final result as a container of your choice.

Returns
a contiguous container holding the result

Definition at line 78 of file buf_comp.h.

78 {
79 T output(output_length());
80 final_result(output);
81 return output;
82 }
virtual size_t output_length() const =0
FE_25519 T
Definition ge.cpp:34

References T.

◆ final() [2/4]

void Botan::Buffered_Computation::final ( std::span< uint8_t > out)
inlineinherited

Definition at line 86 of file buf_comp.h.

86 {
87 BOTAN_ARG_CHECK(out.size() >= output_length(), "provided output buffer has insufficient capacity");
88 final_result(out);
89 }
#define BOTAN_ARG_CHECK(expr, msg)
Definition assert.h:29

References BOTAN_ARG_CHECK.

◆ final() [3/4]

template<concepts::resizable_byte_buffer T>
void Botan::Buffered_Computation::final ( T & out)
inlineinherited

Definition at line 92 of file buf_comp.h.

92 {
93 out.resize(output_length());
94 final_result(out);
95 }

◆ final() [4/4]

void Botan::Buffered_Computation::final ( uint8_t out[])
inlineinherited

◆ final_result()

void Botan::BLAKE2b::final_result ( std::span< uint8_t > out)
overrideprotectedvirtual

Write the final output to out

Parameters
outis an output buffer of output_length()

Implements Botan::Buffered_Computation.

Definition at line 158 of file blake2b.cpp.

158 {
159 const auto pos = m_buffer.elements_in_buffer();
160 m_buffer.fill_up_with_zeros();
161
162 m_F = 0xFFFFFFFFFFFFFFFF;
163 compress(m_buffer.consume().data(), 1, pos);
164 copy_out_vec_le(output.data(), output_length(), m_H);
165 state_init();
166}
size_t elements_in_buffer() const
std::span< const T > consume()
size_t output_length() const override
Definition blake2b.h:36
void copy_out_vec_le(uint8_t out[], size_t out_bytes, const std::vector< T, Alloc > &in)
Definition loadstor.h:540

References Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::consume(), Botan::copy_out_vec_le(), Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::elements_in_buffer(), Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::fill_up_with_zeros(), and output_length().

◆ final_stdvec()

std::vector< uint8_t > Botan::Buffered_Computation::final_stdvec ( )
inlineinherited

Definition at line 84 of file buf_comp.h.

84{ return final<std::vector<uint8_t>>(); }

◆ has_keying_material()

bool Botan::BLAKE2b::has_keying_material ( ) const
overridevirtual
Returns
true if a key has been set on this object

Implements Botan::SymmetricAlgorithm.

Definition at line 184 of file blake2b.cpp.

184 {
185 return m_key_size > 0;
186}

Referenced by Botan::BLAKE2bMAC::has_keying_material().

◆ hash_block_size()

size_t Botan::BLAKE2b::hash_block_size ( ) const
inlineoverridevirtual
Returns
hash block size as defined for this algorithm

Reimplemented from Botan::HashFunction.

Definition at line 34 of file blake2b.h.

34{ return 128; }

◆ key_schedule()

void Botan::BLAKE2b::key_schedule ( std::span< const uint8_t > key)
overrideprotectedvirtual

Run the key schedule

Parameters
keythe key

Implements Botan::SymmetricAlgorithm.

Definition at line 188 of file blake2b.cpp.

188 {
189 BOTAN_ASSERT_NOMSG(key.size() <= m_buffer.size());
190
191 m_key_size = key.size();
192 m_padded_key_buffer.resize(m_buffer.size());
193
194 if(m_padded_key_buffer.size() > m_key_size) {
195 size_t padding = m_padded_key_buffer.size() - m_key_size;
196 clear_mem(m_padded_key_buffer.data() + m_key_size, padding);
197 }
198
199 copy_mem(m_padded_key_buffer.data(), key.data(), key.size());
200 state_init();
201}
#define BOTAN_ASSERT_NOMSG(expr)
Definition assert.h:59
constexpr size_t size() const
constexpr void copy_mem(T *out, const T *in, size_t n)
Definition mem_ops.h:146
constexpr void clear_mem(T *ptr, size_t n)
Definition mem_ops.h:120

References BOTAN_ASSERT_NOMSG, Botan::clear_mem(), Botan::copy_mem(), and Botan::AlignmentBuffer< T, BLOCK_SIZE, FINAL_BLOCK_STRATEGY >::size().

◆ key_size()

size_t Botan::BLAKE2b::key_size ( ) const
inline

Definition at line 38 of file blake2b.h.

38{ return m_key_size; }

◆ key_spec()

Key_Length_Specification Botan::BLAKE2b::key_spec ( ) const
overridevirtual
Returns
object describing limits on key size

Implements Botan::SymmetricAlgorithm.

Definition at line 168 of file blake2b.cpp.

168 {
169 return Key_Length_Specification(1, 64);
170}

Referenced by Botan::BLAKE2bMAC::key_spec().

◆ maximum_keylength()

size_t Botan::SymmetricAlgorithm::maximum_keylength ( ) const
inlineinherited
Returns
maximum allowed key length

Definition at line 95 of file sym_algo.h.

95{ return key_spec().maximum_keylength(); }
size_t maximum_keylength() const
Definition sym_algo.h:54
virtual Key_Length_Specification key_spec() const =0

◆ minimum_keylength()

size_t Botan::SymmetricAlgorithm::minimum_keylength ( ) const
inlineinherited
Returns
minimum allowed key length

Definition at line 100 of file sym_algo.h.

100{ return key_spec().minimum_keylength(); }
size_t minimum_keylength() const
Definition sym_algo.h:49

◆ name()

std::string Botan::BLAKE2b::name ( ) const
overridevirtual
Returns
the hash function name

Implements Botan::HashFunction.

Definition at line 172 of file blake2b.cpp.

172 {
173 return fmt("BLAKE2b({})", m_output_bits);
174}
std::string fmt(std::string_view format, const T &... args)
Definition fmt.h:53

References Botan::fmt().

Referenced by Botan::BLAKE2bMAC::name().

◆ new_object()

std::unique_ptr< HashFunction > Botan::BLAKE2b::new_object ( ) const
overridevirtual
Returns
new object representing the same algorithm as *this

Implements Botan::HashFunction.

Definition at line 176 of file blake2b.cpp.

176 {
177 return std::make_unique<BLAKE2b>(m_output_bits);
178}

◆ output_length()

size_t Botan::BLAKE2b::output_length ( ) const
inlineoverridevirtual
Returns
length of the output of this function in bytes

Implements Botan::Buffered_Computation.

Definition at line 36 of file blake2b.h.

36{ return m_output_bits / 8; }

Referenced by final_result(), Botan::BLAKE2bMAC::new_object(), and Botan::BLAKE2bMAC::output_length().

◆ process() [1/3]

template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T Botan::Buffered_Computation::process ( const uint8_t in[],
size_t length )
inlineinherited

Update and finalize computation. Does the same as calling update() and final() consecutively.

Parameters
inthe input to process as a byte array
lengththe length of the byte array
Returns
the result of the call to final()

Definition at line 105 of file buf_comp.h.

105 {
106 update(in, length);
107 return final<T>();
108 }
int(* update)(CTX *, const void *, CC_LONG len)

References update.

Referenced by Botan::Dilithium_Symmetric_Primitives::CRH(), and Botan::Dilithium_Symmetric_Primitives::H().

◆ process() [2/3]

template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T Botan::Buffered_Computation::process ( std::span< const uint8_t > in)
inlineinherited

Update and finalize computation. Does the same as calling update() and final() consecutively.

Parameters
inthe input to process as a contiguous container
Returns
the result of the call to final()

Definition at line 129 of file buf_comp.h.

129 {
130 update(in);
131 return final<T>();
132 }

References update.

◆ process() [3/3]

template<concepts::resizable_byte_buffer T = secure_vector<uint8_t>>
T Botan::Buffered_Computation::process ( std::string_view in)
inlineinherited

Update and finalize computation. Does the same as calling update() and final() consecutively.

Parameters
inthe input to process as a string
Returns
the result of the call to final()

Definition at line 117 of file buf_comp.h.

117 {
118 update(in);
119 return final<T>();
120 }

References update.

◆ provider()

virtual std::string Botan::HashFunction::provider ( ) const
inlinevirtualinherited
Returns
provider information about this implementation. Default is "base", might also return "sse2", "avx2", "openssl", or some other arbitrary string.

Reimplemented in Botan::Keccak_1600, Botan::SHA_1, Botan::SHA_224, Botan::SHA_256, Botan::SHA_384, Botan::SHA_512, Botan::SHA_512_256, Botan::SHA_3, Botan::SHAKE_128, and Botan::SHAKE_256.

Definition at line 49 of file hash.h.

49{ return "base"; }

Referenced by Botan::HashFunction::create(), and Botan::HashFunction::create_or_throw().

◆ providers()

std::vector< std::string > Botan::HashFunction::providers ( std::string_view algo_spec)
staticinherited
Returns
list of available providers for this algorithm, empty if not available
Parameters
algo_specalgorithm name

Definition at line 305 of file hash.cpp.

305 {
306 return probe_providers_of<HashFunction>(algo_spec, {"base", "commoncrypto"});
307}

◆ set_key() [1/3]

void Botan::SymmetricAlgorithm::set_key ( const SymmetricKey & key)
inlineinherited

◆ set_key() [2/3]

void Botan::SymmetricAlgorithm::set_key ( const uint8_t key[],
size_t length )
inlineinherited

Set the symmetric key of this object.

Parameters
keythe to be set as a byte array.
lengthin bytes of key param

Definition at line 126 of file sym_algo.h.

126{ set_key(std::span{key, length}); }

References Botan::SymmetricAlgorithm::set_key().

Referenced by Botan::SymmetricAlgorithm::set_key().

◆ set_key() [3/3]

void Botan::SymmetricAlgorithm::set_key ( std::span< const uint8_t > key)
inherited

Set the symmetric key of this object.

Parameters
keythe contiguous byte range to be set.

Definition at line 17 of file sym_algo.cpp.

17 {
18 if(!valid_keylength(key.size())) {
19 throw Invalid_Key_Length(name(), key.size());
20 }
21 key_schedule(key);
22}
bool valid_keylength(size_t length) const
Definition sym_algo.h:107
virtual std::string name() const =0

References Botan::SymmetricAlgorithm::name(), and Botan::SymmetricAlgorithm::valid_keylength().

◆ update() [1/4]

void Botan::Buffered_Computation::update ( const uint8_t in[],
size_t length )
inlineinherited

◆ update() [2/4]

void Botan::Buffered_Computation::update ( std::span< const uint8_t > in)
inlineinherited

Add new input to process.

Parameters
inthe input to process as a contiguous data range

Definition at line 41 of file buf_comp.h.

41{ add_data(in); }

◆ update() [3/4]

void Botan::Buffered_Computation::update ( std::string_view str)
inlineinherited

Add new input to process.

Parameters
strthe input to process as a std::string_view. Will be interpreted as a byte array based on the strings encoding.

Definition at line 56 of file buf_comp.h.

56{ add_data({cast_char_ptr_to_uint8(str.data()), str.size()}); }
const uint8_t * cast_char_ptr_to_uint8(const char *s)
Definition mem_ops.h:272

References Botan::cast_char_ptr_to_uint8().

◆ update() [4/4]

void Botan::Buffered_Computation::update ( uint8_t in)
inlineinherited

Process a single byte.

Parameters
inthe byte to process

Definition at line 62 of file buf_comp.h.

62{ add_data({&in, 1}); }

◆ update_be() [1/3]

void Botan::Buffered_Computation::update_be ( uint16_t val)
inherited

Definition at line 13 of file buf_comp.cpp.

13 {
14 uint8_t inb[sizeof(val)];
15 store_be(val, inb);
16 add_data({inb, sizeof(inb)});
17}
constexpr void store_be(T in, OutR &&out_range)
Definition loadstor.h:358

References Botan::store_be().

Referenced by Botan::mgf1_mask(), and Botan::pbkdf2().

◆ update_be() [2/3]

void Botan::Buffered_Computation::update_be ( uint32_t val)
inherited

Definition at line 19 of file buf_comp.cpp.

19 {
20 uint8_t inb[sizeof(val)];
21 store_be(val, inb);
22 add_data({inb, sizeof(inb)});
23}

References Botan::store_be().

◆ update_be() [3/3]

void Botan::Buffered_Computation::update_be ( uint64_t val)
inherited

Definition at line 25 of file buf_comp.cpp.

25 {
26 uint8_t inb[sizeof(val)];
27 store_be(val, inb);
28 add_data({inb, sizeof(inb)});
29}

References Botan::store_be().

◆ update_le() [1/3]

void Botan::Buffered_Computation::update_le ( uint16_t val)
inherited

Definition at line 31 of file buf_comp.cpp.

31 {
32 uint8_t inb[sizeof(val)];
33 store_le(val, inb);
34 add_data({inb, sizeof(inb)});
35}
constexpr void store_le(T in, OutR &&out_range)
Definition loadstor.h:383

References Botan::store_le().

◆ update_le() [2/3]

void Botan::Buffered_Computation::update_le ( uint32_t val)
inherited

Definition at line 37 of file buf_comp.cpp.

37 {
38 uint8_t inb[sizeof(val)];
39 store_le(val, inb);
40 add_data({inb, sizeof(inb)});
41}

References Botan::store_le().

◆ update_le() [3/3]

void Botan::Buffered_Computation::update_le ( uint64_t val)
inherited

Definition at line 43 of file buf_comp.cpp.

43 {
44 uint8_t inb[sizeof(val)];
45 store_le(val, inb);
46 add_data({inb, sizeof(inb)});
47}

References Botan::store_le().

◆ valid_keylength()

bool Botan::SymmetricAlgorithm::valid_keylength ( size_t length) const
inlineinherited

Check whether a given key length is valid for this algorithm.

Parameters
lengththe key length to be checked.
Returns
true if the key length is valid.

Definition at line 107 of file sym_algo.h.

107{ return key_spec().valid_keylength(length); }
bool valid_keylength(size_t length) const
Definition sym_algo.h:42

Referenced by Botan::SymmetricAlgorithm::set_key().

Friends And Related Symbol Documentation

◆ BLAKE2bMAC

friend class BLAKE2bMAC
friend

Definition at line 50 of file blake2b.h.


The documentation for this class was generated from the following files: