Botan  1.10.9
Public Member Functions | List of all members
Botan::KDF1 Class Reference

#include <kdf1.h>

Inheritance diagram for Botan::KDF1:
Botan::KDF Botan::Algorithm

Public Member Functions

void clear ()
 
KDFclone () const
 
SecureVector< bytederive (size_t, const byte secret[], size_t secret_len, const byte P[], size_t P_len) const
 
SecureVector< bytederive_key (size_t key_len, const MemoryRegion< byte > &secret, const std::string &salt="") const
 
SecureVector< bytederive_key (size_t key_len, const MemoryRegion< byte > &secret, const MemoryRegion< byte > &salt) const
 
SecureVector< bytederive_key (size_t key_len, const MemoryRegion< byte > &secret, const byte salt[], size_t salt_len) const
 
SecureVector< bytederive_key (size_t key_len, const byte secret[], size_t secret_len, const std::string &salt="") const
 
SecureVector< bytederive_key (size_t key_len, const byte secret[], size_t secret_len, const byte salt[], size_t salt_len) const
 
 KDF1 (HashFunction *h)
 
 KDF1 (const KDF1 &other)
 
std::string name () const
 
 ~KDF1 ()
 

Detailed Description

KDF1, from IEEE 1363

Definition at line 19 of file kdf1.h.

Constructor & Destructor Documentation

Botan::KDF1::KDF1 ( HashFunction h)
inline

Definition at line 29 of file kdf1.h.

29 : hash(h) {}
Botan::KDF1::KDF1 ( const KDF1 other)
inline

Definition at line 30 of file kdf1.h.

30 : KDF(), hash(other.hash->clone()) {}
Botan::KDF1::~KDF1 ( )
inline

Definition at line 32 of file kdf1.h.

32 { delete hash; }

Member Function Documentation

void Botan::KDF::clear ( )
inlinevirtualinherited

Zeroize internal state

Implements Botan::Algorithm.

Definition at line 81 of file kdf.h.

81 {}
KDF* Botan::KDF1::clone ( ) const
inlinevirtual

Implements Botan::KDF.

Definition at line 27 of file kdf1.h.

27 { return new KDF1(hash->clone()); }
virtual HashFunction * clone() const =0
KDF1(HashFunction *h)
Definition: kdf1.h:29
SecureVector< byte > Botan::KDF1::derive ( size_t  ,
const byte  secret[],
size_t  secret_len,
const byte  P[],
size_t  P_len 
) const
virtual

Implements Botan::KDF.

Definition at line 15 of file kdf1.cpp.

References Botan::Buffered_Computation::final(), and Botan::Buffered_Computation::update().

18  {
19  hash->update(secret, secret_len);
20  hash->update(P, P_len);
21  return hash->final();
22  }
void update(const byte in[], size_t length)
Definition: buf_comp.h:33
void final(byte out[])
Definition: buf_comp.h:80
SecureVector< byte > Botan::KDF::derive_key ( size_t  key_len,
const MemoryRegion< byte > &  secret,
const std::string &  salt = "" 
) const
inherited

Derive a key

Parameters
key_lenthe desired output length in bytes
secretthe secret input
salta diversifier

Definition at line 15 of file kdf.cpp.

References Botan::MemoryRegion< T >::size().

Referenced by Botan::KDF::derive_key(), and Botan::PK_Key_Agreement::derive_key().

18  {
19  return derive_key(key_len, &secret[0], secret.size(),
20  reinterpret_cast<const byte*>(salt.data()),
21  salt.length());
22  }
unsigned char byte
Definition: types.h:22
SecureVector< byte > derive_key(size_t key_len, const MemoryRegion< byte > &secret, const std::string &salt="") const
Definition: kdf.cpp:15
size_t size() const
Definition: secmem.h:29
SecureVector< byte > Botan::KDF::derive_key ( size_t  key_len,
const MemoryRegion< byte > &  secret,
const MemoryRegion< byte > &  salt 
) const
inherited

Derive a key

Parameters
key_lenthe desired output length in bytes
secretthe secret input
salta diversifier

Definition at line 38 of file kdf.cpp.

References Botan::KDF::derive_key(), and Botan::MemoryRegion< T >::size().

41  {
42  return derive_key(key_len, &secret[0], secret.size(),
43  &salt[0], salt.size());
44  }
SecureVector< byte > derive_key(size_t key_len, const MemoryRegion< byte > &secret, const std::string &salt="") const
Definition: kdf.cpp:15
size_t size() const
Definition: secmem.h:29
SecureVector< byte > Botan::KDF::derive_key ( size_t  key_len,
const MemoryRegion< byte > &  secret,
const byte  salt[],
size_t  salt_len 
) const
inherited

Derive a key

Parameters
key_lenthe desired output length in bytes
secretthe secret input
salta diversifier
salt_lensize of salt in bytes

Definition at line 27 of file kdf.cpp.

References Botan::KDF::derive_key(), and Botan::MemoryRegion< T >::size().

30  {
31  return derive_key(key_len, &secret[0], secret.size(),
32  salt, salt_len);
33  }
SecureVector< byte > derive_key(size_t key_len, const MemoryRegion< byte > &secret, const std::string &salt="") const
Definition: kdf.cpp:15
size_t size() const
Definition: secmem.h:29
SecureVector< byte > Botan::KDF::derive_key ( size_t  key_len,
const byte  secret[],
size_t  secret_len,
const std::string &  salt = "" 
) const
inherited

Derive a key

Parameters
key_lenthe desired output length in bytes
secretthe secret input
secret_lensize of secret in bytes
salta diversifier

Definition at line 49 of file kdf.cpp.

References Botan::KDF::derive_key().

52  {
53  return derive_key(key_len, secret, secret_len,
54  reinterpret_cast<const byte*>(salt.data()),
55  salt.length());
56  }
SecureVector< byte > derive_key(size_t key_len, const MemoryRegion< byte > &secret, const std::string &salt="") const
Definition: kdf.cpp:15
SecureVector< byte > Botan::KDF::derive_key ( size_t  key_len,
const byte  secret[],
size_t  secret_len,
const byte  salt[],
size_t  salt_len 
) const
inherited

Derive a key

Parameters
key_lenthe desired output length in bytes
secretthe secret input
secret_lensize of secret in bytes
salta diversifier
salt_lensize of salt in bytes

Definition at line 61 of file kdf.cpp.

64  {
65  return derive(key_len, secret, secret_len, salt, salt_len);
66  }
std::string Botan::KDF1::name ( ) const
inlinevirtual
Returns
name of this algorithm

Implements Botan::Algorithm.

Definition at line 26 of file kdf1.h.

26 { return "KDF1(" + hash->name() + ")"; }
virtual std::string name() const =0

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