Botan 3.8.1
Crypto and TLS for C&
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#include <ed25519.h>
Public Member Functions | |
virtual Signature_Format | _default_x509_signature_format () const |
virtual std::optional< size_t > | _signature_element_size_for_DER_encoding () const |
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::Encryption > | create_encryption_op (RandomNumberGenerator &rng, std::string_view params, std::string_view provider) const |
virtual std::unique_ptr< PK_Ops::KEM_Encryption > | create_kem_encryption_op (std::string_view params, std::string_view provider) const |
std::unique_ptr< PK_Ops::Verification > | create_verification_op (std::string_view params, std::string_view provider) const override |
std::unique_ptr< PK_Ops::Verification > | create_x509_verification_op (const AlgorithmIdentifier &signature_algorithm, std::string_view provider) const override |
Signature_Format | default_x509_signature_format () const |
Ed25519_PublicKey (const AlgorithmIdentifier &alg_id, std::span< const uint8_t > key_bits) | |
Ed25519_PublicKey (const uint8_t pub_key[], size_t len) | |
Ed25519_PublicKey (std::span< const uint8_t > pub) | |
size_t | estimated_strength () const override |
std::string | fingerprint_public (std::string_view alg="SHA-256") const |
std::unique_ptr< Private_Key > | generate_another (RandomNumberGenerator &rng) const final |
virtual const BigInt & | get_int_field (std::string_view field) const |
OID | get_oid () const |
const std::vector< uint8_t > & | get_public_key () const |
size_t | key_length () const override |
size_t | message_part_size () const |
size_t | message_parts () const |
virtual OID | object_identifier () const |
std::vector< uint8_t > | public_key_bits () const override |
std::vector< uint8_t > | raw_public_key_bits () const override |
std::vector< uint8_t > | subject_public_key () const |
bool | supports_operation (PublicKeyOperation op) const override |
Protected Member Functions | |
Ed25519_PublicKey ()=default | |
Protected Attributes | |
std::vector< uint8_t > | m_public |
Botan::Ed25519_PublicKey::Ed25519_PublicKey | ( | const AlgorithmIdentifier & | alg_id, |
std::span< const uint8_t > | key_bits ) |
Create a Ed25519 Public Key.
alg_id | the X.509 algorithm identifier |
key_bits | DER encoded public key bits |
Definition at line 72 of file ed25519_key.cpp.
References m_public.
Referenced by Ed25519_PublicKey().
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inline |
Definition at line 48 of file ed25519.h.
References Ed25519_PublicKey().
Botan::Ed25519_PublicKey::Ed25519_PublicKey | ( | const uint8_t | pub_key[], |
size_t | len ) |
Definition at line 65 of file ed25519_key.cpp.
References m_public.
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protecteddefault |
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virtualinherited |
Reimplemented in Botan::GOST_3410_PublicKey.
Definition at line 30 of file pk_keys.cpp.
References _signature_element_size_for_DER_encoding(), Botan::DerSequence, and Botan::Standard.
Referenced by Botan::X509_Object::choose_sig_format(), Botan::Public_Key::default_x509_signature_format(), and Botan::PK_Verifier::PK_Verifier().
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inlinevirtualinherited |
Certain signatures schemes such as ECDSA have more than one element, and certain unfortunate protocols decided the thing to do was not concatenate them as normally done, but instead DER encode each of the elements as independent values.
If this returns a value x then the signature is checked to be exactly 2*x bytes and split in half for DER encoding.
Reimplemented in Botan::DSA_PublicKey, Botan::ECDSA_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::GOST_3410_PublicKey, and Botan::SM2_PublicKey.
Definition at line 137 of file pk_keys.h.
Referenced by _default_x509_signature_format(), Botan::Public_Key::message_part_size(), Botan::Public_Key::message_parts(), Botan::PK_Verifier::PK_Verifier(), and Botan::PK_Verifier::PK_Verifier().
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inlineoverridevirtual |
Get the name of the underlying public key scheme.
Implements Botan::Asymmetric_Key.
Definition at line 19 of file ed25519.h.
Referenced by Botan::Ed25519_PrivateKey::create_signature_op(), create_verification_op(), and create_x509_verification_op().
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overridevirtual |
Implements Botan::Public_Key.
Definition at line 21 of file ed25519_key.cpp.
References Botan::Asymmetric_Key::object_identifier(), and Botan::AlgorithmIdentifier::USE_EMPTY_PARAM.
Referenced by create_x509_verification_op().
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overridevirtual |
Implements Botan::Asymmetric_Key.
Definition at line 25 of file ed25519_key.cpp.
References Botan::copy_mem(), Botan::ge_double_scalarmult_vartime(), Botan::ge_frombytes_negate_vartime(), Botan::CT::is_equal(), and m_public.
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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
rng | a 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. |
params | additional parameters |
provider | the provider to use |
Reimplemented in Botan::ElGamal_PublicKey, Botan::RSA_PublicKey, Botan::SM2_PublicKey, and Botan::TPM2::RSA_PublicKey.
Definition at line 98 of file pk_keys.cpp.
References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().
Referenced by Botan::PK_Encryptor_EME::PK_Encryptor_EME().
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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
params | additional parameters |
provider | the provider to use |
Reimplemented in Botan::Classic_McEliece_PublicKey, Botan::FrodoKEM_PublicKey, Botan::KEX_to_KEM_Adapter_PublicKey, Botan::Kyber_PublicKey, Botan::McEliece_PublicKey, Botan::RSA_PublicKey, and Botan::TLS::Hybrid_KEM_PublicKey.
Definition at line 104 of file pk_keys.cpp.
References Botan::Asymmetric_Key::algo_name(), and Botan::fmt().
Referenced by Botan::PK_KEM_Encryptor::PK_KEM_Encryptor().
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overridevirtual |
This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h
Return a verification operation for this key/params or throw
params | additional parameters |
provider | the provider to use |
Reimplemented from Botan::Public_Key.
Definition at line 286 of file ed25519_key.cpp.
References algo_name().
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overridevirtual |
This is an internal library function exposed on key types. In all cases applications should use wrappers in pubkey.h
Return a verification operation for this combination of key and signature algorithm or throw.
signature_algorithm | is the X.509 algorithm identifier encoding the padding scheme and hash hash function used in the signature if applicable. |
provider | the provider to use |
Reimplemented from Botan::Public_Key.
Definition at line 300 of file ed25519_key.cpp.
References algo_name(), and algorithm_identifier().
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inlineinherited |
Definition at line 228 of file pk_keys.h.
References Botan::Asymmetric_Key::_default_x509_signature_format(), and default_x509_signature_format().
Referenced by default_x509_signature_format().
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inlineoverridevirtual |
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.
Implements Botan::Asymmetric_Key.
Definition at line 21 of file ed25519.h.
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inherited |
Definition at line 87 of file pk_keys.cpp.
References Botan::create_hex_fingerprint(), and subject_public_key().
Referenced by public_key_bits().
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finalvirtual |
Generate another (cryptographically independent) key pair using the same algorithm parameters as this key. This is most useful for algorithms that support PublicKeyOperation::KeyAgreement to generate a fitting ephemeral key pair. For other key types it might throw Not_Implemented.
Implements Botan::Asymmetric_Key.
Definition at line 88 of file ed25519_key.cpp.
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virtualinherited |
Access an algorithm specific field
If the field is not known for this algorithm, an Invalid_Argument is thrown. The interpretation of the result requires knowledge of which algorithm is involved. For instance for RSA "p" represents one of the secret primes, while for DSA "p" is the public prime.
Some algorithms may not implement this method at all.
This is primarily used to implement the FFI botan_pubkey_get_field and botan_privkey_get_field functions.
TODO(Botan4) Change this to return by value
Reimplemented in Botan::DH_PrivateKey, Botan::DH_PublicKey, Botan::DSA_PrivateKey, Botan::DSA_PublicKey, Botan::EC_PrivateKey, Botan::EC_PublicKey, Botan::ElGamal_PrivateKey, Botan::ElGamal_PublicKey, Botan::RSA_PrivateKey, and Botan::RSA_PublicKey.
Definition at line 18 of file pk_keys.cpp.
References algo_name().
Referenced by estimated_strength(), Botan::EC_PublicKey::get_int_field(), and Botan::RSA_PublicKey::get_int_field().
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inlineinherited |
Deprecated version of object_identifier
Definition at line 161 of file pk_keys.h.
References get_oid(), and Botan::Asymmetric_Key::object_identifier().
Referenced by get_oid().
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inline |
Definition at line 37 of file ed25519.h.
References get_public_key(), and m_public.
Referenced by get_public_key(), and Botan::Ed25519_PrivateKey::public_key().
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inlineoverridevirtual |
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 23 of file ed25519.h.
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inlineinherited |
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.
Definition at line 221 of file pk_keys.h.
References Botan::Asymmetric_Key::_signature_element_size_for_DER_encoding(), and message_part_size().
Referenced by message_part_size().
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inlineinherited |
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.
Definition at line 208 of file pk_keys.h.
References Botan::Asymmetric_Key::_signature_element_size_for_DER_encoding(), and message_parts().
Referenced by message_parts().
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virtualinherited |
Get the OID of the underlying public key scheme.
Reimplemented in Botan::Classic_McEliece_PublicKey, Botan::Dilithium_PublicKey, Botan::FrodoKEM_PublicKey, Botan::HSS_LMS_PublicKey, Botan::Kyber_PublicKey, and Botan::SphincsPlus_PublicKey.
Definition at line 22 of file pk_keys.cpp.
References algo_name(), Botan::fmt(), and Botan::OID::from_string().
Referenced by Botan::DH_PublicKey::algorithm_identifier(), Botan::DSA_PublicKey::algorithm_identifier(), Botan::EC_PublicKey::algorithm_identifier(), Botan::Ed25519_PublicKey::algorithm_identifier(), Botan::Ed448_PublicKey::algorithm_identifier(), Botan::ElGamal_PublicKey::algorithm_identifier(), Botan::GOST_3410_PublicKey::algorithm_identifier(), Botan::McEliece_PublicKey::algorithm_identifier(), Botan::RSA_PublicKey::algorithm_identifier(), Botan::TPM_PrivateKey::algorithm_identifier(), Botan::X25519_PublicKey::algorithm_identifier(), Botan::X448_PublicKey::algorithm_identifier(), Botan::XMSS_PublicKey::algorithm_identifier(), estimated_strength(), and Botan::Public_Key::get_oid().
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overridevirtual |
Implements Botan::Public_Key.
Definition at line 84 of file ed25519_key.cpp.
References raw_public_key_bits().
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overridevirtual |
For key agreements this is an alias for PK_Key_Agreement_Key::public_value.
Note: some algorithms (for example RSA) do not have an obvious encoding for this value due to having many different values, and thus throw Not_Implemented when invoking this method.
Implements Botan::Public_Key.
Definition at line 80 of file ed25519_key.cpp.
References m_public.
Referenced by public_key_bits().
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inherited |
Definition at line 56 of file pk_keys.cpp.
References algorithm_identifier(), Botan::BitString, Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), public_key_bits(), and Botan::DER_Encoder::start_sequence().
Referenced by Botan::X509::BER_encode(), Botan::PKCS10_Request::create(), fingerprint_public(), Botan::X509::PEM_encode(), and public_key_bits().
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inlineoverridevirtual |
Return true if this key could be used for the specified type of operation.
Implements Botan::Asymmetric_Key.
Definition at line 35 of file ed25519.h.
References Botan::Signature.
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protected |
Definition at line 60 of file ed25519.h.
Referenced by check_key(), Botan::Ed25519_PrivateKey::Ed25519_PrivateKey(), Botan::Ed25519_PrivateKey::Ed25519_PrivateKey(), Botan::Ed25519_PrivateKey::Ed25519_PrivateKey(), Ed25519_PublicKey(), Ed25519_PublicKey(), get_public_key(), and raw_public_key_bits().