AsymmetricAlgorithm.ImportEncryptedPkcs8PrivateKey Method

Definition

Namespace:

System.Security.Cryptography

Assembly:

System.Security.Cryptography.dll

Overloads

ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)	When overridden in a derived class, imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a byte-based password, replacing the keys for this object.
ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, ReadOnlySpan<Byte>, Int32)	When overridden in a derived class, imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a char-based password, replacing the keys for this object.

ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)

Source:

AsymmetricAlgorithm.cs

When overridden in a derived class, imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a byte-based password, replacing the keys for this object.

public:
 virtual void ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<System::Byte> passwordBytes, ReadOnlySpan<System::Byte> source, [Runtime::InteropServices::Out] int % bytesRead);

public virtual void ImportEncryptedPkcs8PrivateKey (ReadOnlySpan<byte> passwordBytes, ReadOnlySpan<byte> source, out int bytesRead);

abstract member ImportEncryptedPkcs8PrivateKey : ReadOnlySpan<byte> * ReadOnlySpan<byte> * int -> unit
override this.ImportEncryptedPkcs8PrivateKey : ReadOnlySpan<byte> * ReadOnlySpan<byte> * int -> unit

Public Overridable Sub ImportEncryptedPkcs8PrivateKey (passwordBytes As ReadOnlySpan(Of Byte), source As ReadOnlySpan(Of Byte), ByRef bytesRead As Integer)

Parameters

passwordBytes

ReadOnlySpan<Byte>

The bytes to use as a password when decrypting the key material.

source

ReadOnlySpan<Byte>

The bytes of a PKCS#8 EncryptedPrivateKeyInfo structure in the ASN.1-BER encoding.

bytesRead

Int32

When this method returns, contains a value that indicates the number of bytes read from source. This parameter is treated as uninitialized.

Exceptions

CryptographicException

The password is incorrect.

-or-

The contents of source indicate the Key Derivation Function (KDF) to apply is the legacy PKCS#12 KDF, which requires Char-based passwords.

-or-

The contents of source do not represent an ASN.1-BER-encoded PKCS#8 EncryptedPrivateKeyInfo structure.

-or-

The contents of source indicate the key is for an algorithm other than the algorithm represented by this instance.

-or-

The contents of source represent the key in a format that is not supported.

-or-

The algorithm-specific key import failed.

NotImplementedException

A derived type has not overriden this member.

Remarks

The password bytes are passed directly into the Key Derivation Function (KDF) used by the algorithm indicated by pbeParameters. This enables compatibility with other systems which use a text encoding other than UTF-8 when processing passwords with PBKDF2 (Password-Based Key Derivation Function 2).

This method only supports the binary (BER/CER/DER) encoding of EncryptedPrivateKeyInfo. If the value is Base64-encoded or in the PEM text format, the caller must Base64-decode the contents before calling this method.

Because algorithm-specific support is required to interpret the contents of this data format, ImportEncryptedPkcs8PrivateKey throws a NotImplementedException by default.

ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<Char>, ReadOnlySpan<Byte>, Int32)

Source:

AsymmetricAlgorithm.cs

When overridden in a derived class, imports the public/private keypair from a PKCS#8 EncryptedPrivateKeyInfo structure after decrypting with a char-based password, replacing the keys for this object.

public:
 virtual void ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<char> password, ReadOnlySpan<System::Byte> source, [Runtime::InteropServices::Out] int % bytesRead);

public virtual void ImportEncryptedPkcs8PrivateKey (ReadOnlySpan<char> password, ReadOnlySpan<byte> source, out int bytesRead);

abstract member ImportEncryptedPkcs8PrivateKey : ReadOnlySpan<char> * ReadOnlySpan<byte> * int -> unit
override this.ImportEncryptedPkcs8PrivateKey : ReadOnlySpan<char> * ReadOnlySpan<byte> * int -> unit

Public Overridable Sub ImportEncryptedPkcs8PrivateKey (password As ReadOnlySpan(Of Char), source As ReadOnlySpan(Of Byte), ByRef bytesRead As Integer)

Parameters

password

ReadOnlySpan<Char>

The password to use for decrypting the key material.

source

ReadOnlySpan<Byte>

The bytes of a PKCS#8 EncryptedPrivateKeyInfo structure in the ASN.1-BER encoding.

bytesRead

Int32

When this method returns, contains a value that indicates the number of bytes read from source. This parameter is treated as uninitialized.

Exceptions

CryptographicException

The password is incorrect.

-or-

The contents of source do not represent an ASN.1-BER-encoded PKCS#8 EncryptedPrivateKeyInfo structure.

-or-

The contents of source indicate the key is for an algorithm other than the algorithm represented by this instance.

-or-

The contents of source represent the key in a format that is not supported.

-or-

The algorithm-specific key import failed.

NotImplementedException

A derived type has not overriden this member.

Remarks

When the contents of source indicate an algorithm that uses PBKDF1 (Password-Based Key Derivation Function 1) or PBKDF2 (Password-Based Key Derivation Function 2), the password is converted to bytes via the UTF-8 encoding.

This method only supports the binary (BER/CER/DER) encoding of EncryptedPrivateKeyInfo. If the value is Base64-encoded or in the PEM text format, the caller must Base64-decode the contents before calling this method.

Because algorithm-specific support is required to interpret the contents of this data format, ImportEncryptedPkcs8PrivateKey throws a NotImplementedException by default.