Botan  2.4.0
Crypto and TLS for C++11
Public Member Functions | Protected Attributes | List of all members
Botan::GOST_3410_PrivateKey Class Referencefinal

#include <gost_3410.h>

Inheritance diagram for Botan::GOST_3410_PrivateKey:
Botan::GOST_3410_PublicKey Botan::EC_PrivateKey Botan::EC_PublicKey Botan::EC_PublicKey Botan::Private_Key Botan::Public_Key Botan::Public_Key Botan::Public_Key

Public Member Functions

std::string algo_name () const override
 
AlgorithmIdentifier algorithm_identifier () const override
 
bool check_key (RandomNumberGenerator &rng, bool strong) const override
 
virtual std::unique_ptr< PK_Ops::Decryptioncreate_decryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const
 
virtual std::unique_ptr< PK_Ops::Encryptioncreate_encryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const
 
virtual std::unique_ptr< PK_Ops::KEM_Decryptioncreate_kem_decryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const
 
virtual std::unique_ptr< PK_Ops::KEM_Encryptioncreate_kem_encryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const
 
virtual std::unique_ptr< PK_Ops::Key_Agreementcreate_key_agreement_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const
 
std::unique_ptr< PK_Ops::Signaturecreate_signature_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const override
 
std::unique_ptr< PK_Ops::Verificationcreate_verification_op (const std::string &params, const std::string &provider) const override
 
std::vector< uint8_t > DER_domain () const
 
const EC_Groupdomain () const
 
EC_Group_Encoding domain_format () const
 
size_t estimated_strength () const override
 
std::string fingerprint (const std::string &alg) const
 
std::string fingerprint_private (const std::string &alg) const
 
std::string fingerprint_public (const std::string &alg="SHA-256") const
 
virtual OID get_oid () const
 
 GOST_3410_PrivateKey (const AlgorithmIdentifier &alg_id, const secure_vector< uint8_t > &key_bits)
 
 GOST_3410_PrivateKey (RandomNumberGenerator &rng, const EC_Group &domain, const BigInt &x=0)
 
size_t key_length () const override
 
size_t message_part_size () const override
 
size_t message_parts () const override
 
AlgorithmIdentifier pkcs8_algorithm_identifier () const override
 
secure_vector< uint8_t > private_key_bits () const override
 
secure_vector< uint8_t > private_key_info () const
 
const BigIntprivate_value () const
 
std::vector< uint8_t > public_key_bits () const override
 
const PointGFppublic_point () const
 
void set_parameter_encoding (EC_Group_Encoding enc)
 
std::vector< uint8_t > subject_public_key () const
 

Protected Attributes

EC_Group_Encoding m_domain_encoding
 
EC_Group m_domain_params
 
BigInt m_private_key
 
PointGFp m_public_key
 

Detailed Description

GOST-34.10 Private Key

Definition at line 67 of file gost_3410.h.

Constructor & Destructor Documentation

◆ GOST_3410_PrivateKey() [1/2]

Botan::GOST_3410_PrivateKey::GOST_3410_PrivateKey ( const AlgorithmIdentifier alg_id,
const secure_vector< uint8_t > &  key_bits 
)
inline

Load a private key.

Parameters
alg_idthe X.509 algorithm identifier
key_bitsECPrivateKey bits

Definition at line 76 of file gost_3410.h.

77  :
78  EC_PrivateKey(alg_id, key_bits) {}

◆ GOST_3410_PrivateKey() [2/2]

Botan::GOST_3410_PrivateKey::GOST_3410_PrivateKey ( RandomNumberGenerator rng,
const EC_Group domain,
const BigInt x = 0 
)
inline

Generate a new private key

Parameters
rnga random number generator
domainparameters to used for this key
xthe private key; if zero, a new random key is generated

Definition at line 86 of file gost_3410.h.

88  :
89  EC_PrivateKey(rng, domain, x) {}
const EC_Group & domain() const
Definition: ecc_key.h:72

Member Function Documentation

◆ algo_name()

std::string Botan::GOST_3410_PublicKey::algo_name ( ) const
inlineoverridevirtualinherited

Get this keys algorithm name.

Returns
this keys algorithm name

Implements Botan::Public_Key.

Definition at line 45 of file gost_3410.h.

Referenced by create_signature_op(), and Botan::GOST_3410_PublicKey::create_verification_op().

45 { return "GOST-34.10"; }

◆ algorithm_identifier()

AlgorithmIdentifier Botan::GOST_3410_PublicKey::algorithm_identifier ( ) const
overridevirtualinherited
Returns
X.509 AlgorithmIdentifier for this key

Reimplemented from Botan::EC_PublicKey.

Definition at line 40 of file gost_3410.cpp.

References Botan::EC_PublicKey::domain(), Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents_unlocked(), Botan::Public_Key::get_oid(), Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

41  {
42  std::vector<uint8_t> params =
43  DER_Encoder().start_cons(SEQUENCE)
44  .encode(OID(domain().get_oid()))
45  .end_cons()
46  .get_contents_unlocked();
47 
48  return AlgorithmIdentifier(get_oid(), params);
49  }
virtual OID get_oid() const
Definition: pk_keys.cpp:51
const EC_Group & domain() const
Definition: ecc_key.h:72

◆ check_key()

bool Botan::EC_PublicKey::check_key ( RandomNumberGenerator rng,
bool  strong 
) const
overridevirtualinherited

Test the key values for consistency.

Parameters
rngrng to use
strongwhether to perform strong and lengthy version of the test
Returns
true if the test is passed

Implements Botan::Public_Key.

Reimplemented in Botan::ECDSA_PrivateKey, Botan::ECGDSA_PrivateKey, Botan::ECKCDSA_PrivateKey, Botan::SM2_Signature_PrivateKey, and Botan::SM2_Encryption_PrivateKey.

Definition at line 53 of file ecc_key.cpp.

References Botan::EC_Group::get_cofactor(), Botan::EC_Group::get_order(), Botan::CT::is_zero(), Botan::PointGFp::is_zero(), Botan::EC_PublicKey::m_domain_params, Botan::PointGFp::on_the_curve(), Botan::EC_PublicKey::public_point(), and Botan::EC_Group::verify_group().

55  {
56  //verify domain parameters
58  {
59  return false;
60  }
61  //check that public point is not at infinity
62  if(public_point().is_zero())
63  {
64  return false;
65  }
66  //check that public point is on the curve
67  if(!public_point().on_the_curve())
68  {
69  return false;
70  }
72  {
74  {
75  return false;
76  }
77  //check that public point has order q
79  {
80  return false;
81  }
82  }
83  return true;
84  }
const PointGFp & public_point() const
Definition: ecc_key.h:57
const BigInt & get_cofactor() const
Definition: ec_group.h:108
const BigInt & get_order() const
Definition: ec_group.h:102
T is_zero(T x)
Definition: ct_utils.h:118
bool on_the_curve() const
Definition: point_gfp.cpp:413
bool is_zero() const
Definition: point_gfp.h:179
EC_Group m_domain_params
Definition: ecc_key.h:101
bool verify_group(RandomNumberGenerator &rng, bool strong=false) const
Definition: ec_group.cpp:142

◆ create_decryption_op()

std::unique_ptr< PK_Ops::Decryption > Botan::Private_Key::create_decryption_op ( RandomNumberGenerator rng,
const std::string &  params,
const std::string &  provider 
) const
virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return an decryption operation for this key/params or throw

Parameters
rnga random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
paramsadditional parameters
providerthe provider to use

Reimplemented in Botan::RSA_PrivateKey, Botan::SM2_Encryption_PrivateKey, and Botan::ElGamal_PrivateKey.

Definition at line 115 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Decryptor_EME::PK_Decryptor_EME().

118  {
119  throw Lookup_Error(algo_name() + " does not support decryption");
120  }
virtual std::string algo_name() const =0

◆ create_encryption_op()

std::unique_ptr< PK_Ops::Encryption > Botan::Public_Key::create_encryption_op ( RandomNumberGenerator rng,
const std::string &  params,
const std::string &  provider 
) const
virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return an encryption operation for this key/params or throw

Parameters
rnga random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
paramsadditional parameters
providerthe provider to use

Reimplemented in Botan::RSA_PublicKey, Botan::SM2_Encryption_PublicKey, and Botan::ElGamal_PublicKey.

Definition at line 92 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Encryptor_EME::PK_Encryptor_EME().

95  {
96  throw Lookup_Error(algo_name() + " does not support encryption");
97  }
virtual std::string algo_name() const =0

◆ create_kem_decryption_op()

std::unique_ptr< PK_Ops::KEM_Decryption > Botan::Private_Key::create_kem_decryption_op ( RandomNumberGenerator rng,
const std::string &  params,
const std::string &  provider 
) const
virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a KEM decryption operation for this key/params or throw

Parameters
rnga random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
paramsadditional parameters
providerthe provider to use

Reimplemented in Botan::RSA_PrivateKey, and Botan::McEliece_PrivateKey.

Definition at line 123 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_KEM_Decryptor::PK_KEM_Decryptor().

126  {
127  throw Lookup_Error(algo_name() + " does not support KEM decryption");
128  }
virtual std::string algo_name() const =0

◆ create_kem_encryption_op()

std::unique_ptr< PK_Ops::KEM_Encryption > Botan::Public_Key::create_kem_encryption_op ( RandomNumberGenerator rng,
const std::string &  params,
const std::string &  provider 
) const
virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a KEM encryption operation for this key/params or throw

Parameters
rnga random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
paramsadditional parameters
providerthe provider to use

Reimplemented in Botan::RSA_PublicKey, and Botan::McEliece_PublicKey.

Definition at line 100 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_KEM_Encryptor::PK_KEM_Encryptor().

103  {
104  throw Lookup_Error(algo_name() + " does not support KEM encryption");
105  }
virtual std::string algo_name() const =0

◆ create_key_agreement_op()

std::unique_ptr< PK_Ops::Key_Agreement > Botan::Private_Key::create_key_agreement_op ( RandomNumberGenerator rng,
const std::string &  params,
const std::string &  provider 
) const
virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a key agreement operation for this key/params or throw

Parameters
rnga random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
paramsadditional parameters
providerthe provider to use

Reimplemented in Botan::ECDH_PrivateKey, Botan::Curve25519_PrivateKey, and Botan::DH_PrivateKey.

Definition at line 139 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Key_Agreement::PK_Key_Agreement().

142  {
143  throw Lookup_Error(algo_name() + " does not support key agreement");
144  }
virtual std::string algo_name() const =0

◆ create_signature_op()

std::unique_ptr< PK_Ops::Signature > Botan::GOST_3410_PrivateKey::create_signature_op ( RandomNumberGenerator rng,
const std::string &  params,
const std::string &  provider 
) const
overridevirtual

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a signature operation for this key/params or throw

Parameters
rnga random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
paramsadditional parameters
providerthe provider to use

Reimplemented from Botan::Private_Key.

Definition at line 220 of file gost_3410.cpp.

References Botan::GOST_3410_PublicKey::algo_name().

223  {
224  if(provider == "base" || provider.empty())
225  return std::unique_ptr<PK_Ops::Signature>(new GOST_3410_Signature_Operation(*this, params));
226  throw Provider_Not_Found(algo_name(), provider);
227  }
std::string algo_name() const override
Definition: gost_3410.h:45

◆ create_verification_op()

std::unique_ptr< PK_Ops::Verification > Botan::GOST_3410_PublicKey::create_verification_op ( const std::string &  params,
const std::string &  provider 
) const
overridevirtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a verification operation for this key/params or throw

Parameters
paramsadditional parameters
providerthe provider to use

Reimplemented from Botan::Public_Key.

Definition at line 211 of file gost_3410.cpp.

References Botan::GOST_3410_PublicKey::algo_name().

213  {
214  if(provider == "base" || provider.empty())
215  return std::unique_ptr<PK_Ops::Verification>(new GOST_3410_Verification_Operation(*this, params));
216  throw Provider_Not_Found(algo_name(), provider);
217  }
std::string algo_name() const override
Definition: gost_3410.h:45

◆ DER_domain()

std::vector<uint8_t> Botan::EC_PublicKey::DER_domain ( ) const
inlineinherited

Return the DER encoding of this keys domain in whatever format is preset for this particular key

Definition at line 84 of file ecc_key.h.

Referenced by Botan::EC_PublicKey::algorithm_identifier().

85  { return domain().DER_encode(domain_format()); }
const EC_Group & domain() const
Definition: ecc_key.h:72
EC_Group_Encoding domain_format() const
Definition: ecc_key.h:91
std::vector< uint8_t > DER_encode(EC_Group_Encoding form) const
Definition: ec_group.cpp:94

◆ domain()

const EC_Group& Botan::EC_PublicKey::domain ( ) const
inlineinherited

Get the domain parameters of this key.

Exceptions
Invalid_Stateis thrown if the domain parameters of this point are not set
Returns
the domain parameters of this key

Definition at line 72 of file ecc_key.h.

Referenced by Botan::GOST_3410_PublicKey::algorithm_identifier(), botan_pubkey_sm2_compute_za(), Botan::EC_PrivateKey::EC_PrivateKey(), Botan::EC_PublicKey::EC_PublicKey(), Botan::GOST_3410_PublicKey::GOST_3410_PublicKey(), Botan::EC_PublicKey::key_length(), and Botan::SM2_Signature_PrivateKey::SM2_Signature_PrivateKey().

72 { return m_domain_params; }
EC_Group m_domain_params
Definition: ecc_key.h:101

◆ domain_format()

EC_Group_Encoding Botan::EC_PublicKey::domain_format ( ) const
inlineinherited

Get the domain parameter encoding to be used when encoding this key.

Returns
the encoding to use

Definition at line 91 of file ecc_key.h.

92  { return m_domain_encoding; }
EC_Group_Encoding m_domain_encoding
Definition: ecc_key.h:103

◆ estimated_strength()

size_t Botan::EC_PublicKey::estimated_strength ( ) const
overridevirtualinherited

Return the estimated strength of the underlying key against the best currently known attack. Note that this ignores anything but pure attacks against the key itself and do not take into account padding schemes, usage mistakes, etc which might reduce the strength. However it does suffice to provide an upper bound.

Returns
estimated strength in bits

Implements Botan::Public_Key.

Definition at line 25 of file ecc_key.cpp.

References Botan::ecp_work_factor(), and Botan::EC_PublicKey::key_length().

26  {
27  return ecp_work_factor(key_length());
28  }
size_t ecp_work_factor(size_t bits)
Definition: workfactor.cpp:14
size_t key_length() const override
Definition: ecc_key.cpp:20

◆ fingerprint()

std::string Botan::Private_Key::fingerprint ( const std::string &  alg) const
inlineinherited

Definition at line 203 of file pk_keys.h.

204  {
205  return fingerprint_private(alg); // match behavior in previous versions
206  }
std::string fingerprint_private(const std::string &alg) const
Definition: pk_keys.cpp:86

◆ fingerprint_private()

std::string Botan::Private_Key::fingerprint_private ( const std::string &  alg) const
inherited
Returns
Hash of the PKCS #8 encoding for this key object

Definition at line 86 of file pk_keys.cpp.

References Botan::create_hex_fingerprint().

Referenced by Botan::Certificate_Store_In_SQL::find_certs_for_key(), Botan::Certificate_Store_In_SQL::insert_key(), and Botan::Certificate_Store_In_SQL::remove_key().

87  {
89  }
virtual secure_vector< uint8_t > private_key_bits() const =0
AlgorithmIdentifier hash_algo
Definition: x509_obj.cpp:22
std::string create_hex_fingerprint(const uint8_t bits[], size_t bits_len, const std::string &hash_name)
Definition: pk_keys.cpp:17

◆ fingerprint_public()

std::string Botan::Public_Key::fingerprint_public ( const std::string &  alg = "SHA-256") const
inherited
Returns
Hash of the subject public key

Definition at line 78 of file pk_keys.cpp.

References Botan::create_hex_fingerprint(), and Botan::Public_Key::subject_public_key().

79  {
81  }
AlgorithmIdentifier hash_algo
Definition: x509_obj.cpp:22
std::string create_hex_fingerprint(const uint8_t bits[], size_t bits_len, const std::string &hash_name)
Definition: pk_keys.cpp:17
std::vector< uint8_t > subject_public_key() const
Definition: pk_keys.cpp:38

◆ get_oid()

OID Botan::Public_Key::get_oid ( ) const
virtualinherited

◆ key_length()

size_t Botan::EC_PublicKey::key_length ( ) const
overridevirtualinherited

Return an integer value best approximating the length of the primary security parameter. For example for RSA this will be the size of the modulus, for ECDSA the size of the ECC group, and for McEliece the size of the code will be returned.

Implements Botan::Public_Key.

Definition at line 20 of file ecc_key.cpp.

References Botan::BigInt::bits(), Botan::EC_PublicKey::domain(), Botan::EC_Group::get_curve(), and Botan::CurveGFp::get_p().

Referenced by Botan::EC_PublicKey::estimated_strength().

21  {
22  return domain().get_curve().get_p().bits();
23  }
size_t bits() const
Definition: bigint.cpp:183
const EC_Group & domain() const
Definition: ecc_key.h:72
const CurveGFp & get_curve() const
Definition: ec_group.h:90
const BigInt & get_p() const
Definition: curve_gfp.h:91

◆ message_part_size()

size_t Botan::GOST_3410_PublicKey::message_part_size ( ) const
inlineoverridevirtualinherited

Returns how large each of the message parts refered to by message_parts() is

This function is public but applications should have few reasons to ever call this.

Returns
size of the message parts in bits

Reimplemented from Botan::Public_Key.

Definition at line 53 of file gost_3410.h.

54  { return domain().get_order().bytes(); }
const EC_Group & domain() const
Definition: ecc_key.h:72
size_t bytes() const
Definition: bigint.cpp:175
const BigInt & get_order() const
Definition: ec_group.h:102

◆ message_parts()

size_t Botan::GOST_3410_PublicKey::message_parts ( ) const
inlineoverridevirtualinherited

Returns more than 1 if the output of this algorithm (ciphertext, signature) should be treated as more than one value. This is used for algorithms like DSA and ECDSA, where the (r,s) output pair can be encoded as either a plain binary list or a TLV tagged DER encoding depending on the protocol.

This function is public but applications should have few reasons to ever call this.

Returns
number of message parts

Reimplemented from Botan::Public_Key.

Definition at line 51 of file gost_3410.h.

51 { return 2; }

◆ pkcs8_algorithm_identifier()

AlgorithmIdentifier Botan::GOST_3410_PrivateKey::pkcs8_algorithm_identifier ( ) const
inlineoverridevirtual
Returns
PKCS #8 AlgorithmIdentifier for this key Might be different from the X.509 identifier, but normally is not

Reimplemented from Botan::Private_Key.

Definition at line 91 of file gost_3410.h.

References Botan::EC_PublicKey::algorithm_identifier().

AlgorithmIdentifier algorithm_identifier() const override
Definition: ecc_key.cpp:87

◆ private_key_bits()

secure_vector< uint8_t > Botan::EC_PrivateKey::private_key_bits ( ) const
overridevirtualinherited
Returns
BER encoded private key bits

Implements Botan::Private_Key.

Definition at line 150 of file ecc_key.cpp.

References Botan::DER_Encoder::encode(), Botan::BigInt::encode_1363(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents(), Botan::OCTET_STRING, Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

151  {
152  return DER_Encoder()
153  .start_cons(SEQUENCE)
154  .encode(static_cast<size_t>(1))
156  OCTET_STRING)
157  .end_cons()
158  .get_contents();
159  }
BigInt m_private_key
Definition: ecc_key.h:153
size_t bytes() const
Definition: bigint.cpp:175
static secure_vector< uint8_t > encode_1363(const BigInt &n, size_t bytes)
Definition: big_code.cpp:82

◆ private_key_info()

secure_vector< uint8_t > Botan::Private_Key::private_key_info ( ) const
inherited
Returns
PKCS #8 private key encoding for this key object

Definition at line 62 of file pk_keys.cpp.

References Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents(), Botan::OCTET_STRING, Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

Referenced by Botan::PKCS8::BER_encode(), Botan::PKCS8::BER_encode_encrypted_pbkdf_iter(), and Botan::PKCS8::BER_encode_encrypted_pbkdf_msec().

63  {
64  const size_t PKCS8_VERSION = 0;
65 
66  return DER_Encoder()
67  .start_cons(SEQUENCE)
68  .encode(PKCS8_VERSION)
70  .encode(private_key_bits(), OCTET_STRING)
71  .end_cons()
72  .get_contents();
73  }
virtual secure_vector< uint8_t > private_key_bits() const =0
virtual AlgorithmIdentifier pkcs8_algorithm_identifier() const
Definition: pk_keys.h:192

◆ private_value()

const BigInt & Botan::EC_PrivateKey::private_value ( ) const
inherited

Get the private key value of this key object.

Returns
the private key value of this key object

Definition at line 112 of file ecc_key.cpp.

113  {
114  if(m_private_key == 0)
115  throw Invalid_State("EC_PrivateKey::private_value - uninitialized");
116 
117  return m_private_key;
118  }
BigInt m_private_key
Definition: ecc_key.h:153

◆ public_key_bits()

std::vector< uint8_t > Botan::GOST_3410_PublicKey::public_key_bits ( ) const
overridevirtualinherited
Returns
BER encoded public key bits

Reimplemented from Botan::EC_PublicKey.

Definition at line 18 of file gost_3410.cpp.

References Botan::BigInt::binary_encode(), Botan::BigInt::bytes(), Botan::DER_Encoder::encode(), Botan::PointGFp::get_affine_x(), Botan::PointGFp::get_affine_y(), Botan::DER_Encoder::get_contents_unlocked(), Botan::OCTET_STRING, and Botan::EC_PublicKey::public_point().

19  {
20  const BigInt x = public_point().get_affine_x();
21  const BigInt y = public_point().get_affine_y();
22 
23  size_t part_size = std::max(x.bytes(), y.bytes());
24 
25  std::vector<uint8_t> bits(2*part_size);
26 
27  x.binary_encode(&bits[part_size - x.bytes()]);
28  y.binary_encode(&bits[2*part_size - y.bytes()]);
29 
30  // Keys are stored in little endian format (WTF)
31  for(size_t i = 0; i != part_size / 2; ++i)
32  {
33  std::swap(bits[i], bits[part_size-1-i]);
34  std::swap(bits[part_size+i], bits[2*part_size-1-i]);
35  }
36 
37  return DER_Encoder().encode(bits, OCTET_STRING).get_contents_unlocked();
38  }
const PointGFp & public_point() const
Definition: ecc_key.h:57
BigInt get_affine_x() const
Definition: point_gfp.cpp:389
BigInt get_affine_y() const
Definition: point_gfp.cpp:401

◆ public_point()

const PointGFp& Botan::EC_PublicKey::public_point ( ) const
inlineinherited

◆ set_parameter_encoding()

void Botan::EC_PublicKey::set_parameter_encoding ( EC_Group_Encoding  enc)
inherited

Set the domain parameter encoding to be used when encoding this key.

Parameters
encthe encoding to use

Definition at line 97 of file ecc_key.cpp.

References Botan::EC_DOMPAR_ENC_EXPLICIT, Botan::EC_DOMPAR_ENC_IMPLICITCA, Botan::EC_DOMPAR_ENC_OID, Botan::EC_Group::get_oid(), Botan::EC_PublicKey::m_domain_encoding, and Botan::EC_PublicKey::m_domain_params.

98  {
99  if(form != EC_DOMPAR_ENC_EXPLICIT &&
100  form != EC_DOMPAR_ENC_IMPLICITCA &&
101  form != EC_DOMPAR_ENC_OID)
102  throw Invalid_Argument("Invalid encoding form for EC-key object specified");
103 
104  if((form == EC_DOMPAR_ENC_OID) && (m_domain_params.get_oid() == ""))
105  throw Invalid_Argument("Invalid encoding form OID specified for "
106  "EC-key object whose corresponding domain "
107  "parameters are without oid");
108 
109  m_domain_encoding = form;
110  }
EC_Group m_domain_params
Definition: ecc_key.h:101
std::string get_oid() const
Definition: ec_group.h:116
EC_Group_Encoding m_domain_encoding
Definition: ecc_key.h:103

◆ subject_public_key()

std::vector< uint8_t > Botan::Public_Key::subject_public_key ( ) const
inherited
Returns
X.509 subject key encoding for this key object

Definition at line 38 of file pk_keys.cpp.

References Botan::Public_Key::algorithm_identifier(), Botan::BIT_STRING, Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents_unlocked(), Botan::Public_Key::public_key_bits(), Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

Referenced by Botan::X509::BER_encode(), Botan::Public_Key::fingerprint_public(), and Botan::X509::PEM_encode().

39  {
40  return DER_Encoder()
41  .start_cons(SEQUENCE)
42  .encode(algorithm_identifier())
43  .encode(public_key_bits(), BIT_STRING)
44  .end_cons()
45  .get_contents_unlocked();
46  }
virtual std::vector< uint8_t > public_key_bits() const =0
virtual AlgorithmIdentifier algorithm_identifier() const =0

Member Data Documentation

◆ m_domain_encoding

EC_Group_Encoding Botan::EC_PublicKey::m_domain_encoding
protectedinherited

◆ m_domain_params

EC_Group Botan::EC_PublicKey::m_domain_params
protectedinherited

◆ m_private_key

BigInt Botan::EC_PrivateKey::m_private_key
protectedinherited

◆ m_public_key

PointGFp Botan::EC_PublicKey::m_public_key
protectedinherited

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