Class RSAPublicKey
- Namespace
- Yubico.YubiKey.Cryptography
- Assembly
- Yubico.YubiKey.dll
Represents an RSA public key.
public sealed class RSAPublicKey : PublicKey, IPublicKey, IKeyBase
- Inheritance
-
objectRSAPublicKey
- Implements
- Extension Methods
Remarks
This sealed class encapsulates RSA public key parameters (Modulus and Exponent) and provides factory methods for creating instances from RSA parameters or DER-encoded data.
Properties
KeyDefinition
Gets the key definition associated with this RSA private key.
public KeyDefinition KeyDefinition { get; }
Property Value
- KeyDefinition
A KeyDefinition object that describes the key's properties, including its type and length.
KeyType
Gets the type of the cryptographic key.
public override KeyType KeyType { get; }
Property Value
Parameters
Gets the RSA cryptographic parameters required for the private key operations.
public RSAParameters Parameters { get; }
Property Value
- RSAParameters
A structure containing RSA parameters, including Modulus, Exponent, D, P, Q, DP, DQ, and InverseQ values.
Remarks
This property provides access to the fundamental mathematical components needed for RSA private key operations. The parameters are used in cryptographic operations such as decryption and digital signature creation.
Methods
CreateFromParameters(RSAParameters)
Creates a new instance of RSAPublicKey from the given
parameters
.
public static RSAPublicKey CreateFromParameters(RSAParameters parameters)
Parameters
parameters
RSAParametersThe RSA parameters containing the public key data.
Returns
- RSAPublicKey
A new instance of RSAPublicKey.
Exceptions
- ArgumentException
Thrown if the parameters contain private key data.
CreateFromSubjectPublicKeyInfo(ReadOnlyMemory<byte>)
Creates a new instance of IPublicKey from ASN.1 DER-encoded SubjectPublicKeyInfo.
public static RSAPublicKey CreateFromSubjectPublicKeyInfo(ReadOnlyMemory<byte> subjectPublicKeyInfo)
Parameters
subjectPublicKeyInfo
ReadOnlyMemory<byte>The DER-encoded SubjectPublicKeyInfo.
Returns
- RSAPublicKey
A new instance of IPublicKey.
Exceptions
- CryptographicException
Thrown if the public key is invalid.
ExportSubjectPublicKeyInfo()
Exports the public-key portion of the current key in the X.509 SubjectPublicKeyInfo format.
public override byte[] ExportSubjectPublicKeyInfo()
Returns
- byte[]
A byte array containing the X.509 SubjectPublicKeyInfo representation of the public-key portion of this key