Table of Contents

Codeunit "Rijndael Cryptography"

ID 1258
Namespace: System.Security.Encryption

Provides helper functions for the Advanced Encryption Standard.

Properties

Name Value
Access Public
InherentEntitlements X
InherentPermissions X

Methods

InitRijndaelProvider

Initializes a new instance of the RijndaelManaged class with default values.

procedure InitRijndaelProvider()

InitRijndaelProvider

Initializes a new instance of the RijndaelManaged class providing the encryption key.

procedure InitRijndaelProvider(EncryptionKey: SecretText)

Parameters

Name Type Description
EncryptionKey SecretText

Represents the secret key for the symmetric algorithm.

InitRijndaelProvider

Initializes a new instance of the RijndaelManaged class providing the encryption key and block size.

procedure InitRijndaelProvider(EncryptionKey: SecretText, BlockSize: Integer)

Parameters

Name Type Description
EncryptionKey SecretText

Represents the secret key for the symmetric algorithm.
BlockSize Integer

Represents the block size, in bits, of the cryptographic operation.

InitRijndaelProvider

Initializes a new instance of the RijndaelManaged class providing the encryption key, block size and cipher mode.

procedure InitRijndaelProvider(EncryptionKey: SecretText, BlockSize: Integer, CipherMode: Text)

Parameters

Name Type Description
EncryptionKey SecretText

Represents the secret key for the symmetric algorithm.
BlockSize Integer

Represents the block size, in bits, of the cryptographic operation.
CipherMode Text

Represents the cipher mode used in the symmetric algorithm. Valid values: ECB,CBC,CFB,CTS,OFB

InitRijndaelProvider

Initializes a new instance of the RijndaelManaged class providing the encryption key, block size, cipher mode and padding mode.

procedure InitRijndaelProvider(EncryptionKey: SecretText, BlockSize: Integer, CipherMode: Text, PaddingMode: Text)

Parameters

Name Type Description
EncryptionKey SecretText

Represents the secret key for the symmetric algorithm.
BlockSize Integer

Represents the block size, in bits, of the cryptographic operation.
CipherMode Text

Represents the cipher mode used in the symmetric algorithm. Valid values: ECB,CBC,CFB,CTS,OFB
PaddingMode Text

Represents the padding mode used in the symmetric algorithm.. Valid values: None,ANSIX923,ISO10126,PKCS7,Zeros

SetBlockSize

Sets a new block size value for the RijndaelManaged class.

procedure SetBlockSize(BlockSize: Integer)

Parameters

Name Type Description
BlockSize Integer

Represents the block size, in bits, of the cryptographic operation.

SetCipherMode

Sets a new cipher mode value for the RijndaelManaged class.

procedure SetCipherMode(CipherMode: Text)

Parameters

Name Type Description
CipherMode Text

Represents the cipher mode used in the symmetric algorithm. Valid values: ECB,CBC,CFB,CTS,OFB

SetPaddingMode

Sets a new padding mode value for the RijndaelManaged class.

procedure SetPaddingMode(PaddingMode: Text)

Parameters

Name Type Description
PaddingMode Text

Represents the padding mode used in the symmetric algorithm.. Valid values: None,ANSIX923,ISO10126,PKCS7,Zeros

SetEncryptionData

Sets the key and vector for the RijndaelManaged class.

procedure SetEncryptionData(KeyAsBase64: SecretText, VectorAsBase64: Text)

Parameters

Name Type Description
KeyAsBase64 SecretText

Represents the secret key for the symmetric algorithm encoded as Base64 Text
VectorAsBase64 Text

Represents the initialization vector (IV) for the symmetric algorithm encoded as Base64 Text

IsValidKeySize

Determines whether the specified key size is valid for the current algorithm.

procedure IsValidKeySize(KeySize: Integer): Boolean

Parameters

Name Type Description
KeySize Integer

Key Size.

Returns

Type Description
Boolean

True if the key size is valid; false otherwise.

GetLegalKeySizeValues

Specifies the key sizes, in bits, that are supported by the symmetric algorithm.

procedure GetLegalKeySizeValues(var MinSize: Integer, var MaxSize: Integer, var SkipSize: Integer)

Parameters

Name Type Description
MinSize Integer

Minimum Size in bits
MaxSize Integer

Maximum Size in bits
SkipSize Integer

Skip Size in bits

GetLegalBlockSizeValues

Specifies the block sizes, in bits, that are supported by the symmetric algorithm.

procedure GetLegalBlockSizeValues(var MinSize: Integer, var MaxSize: Integer, var SkipSize: Integer)

Parameters

Name Type Description
MinSize Integer

Minimum Size in bits
MaxSize Integer

Maximum Size in bits
SkipSize Integer

Skip Size in bits

GetEncryptionData

Gets the key and vector from the RijndaelManaged class

procedure GetEncryptionData(var KeyAsBase64: SecretText, var VectorAsBase64: Text)

Parameters

Name Type Description
KeyAsBase64 SecretText

Represents the secret key for the symmetric algorithm encoded as Base64 Text
VectorAsBase64 Text

Represents the initialization vector (IV) for the symmetric algorithm encoded as Base64 Text

Encrypt

Returns plain text as an encrypted value.

procedure Encrypt(PlainText: Text): Text

Parameters

Name Type Description
PlainText Text

The value to encrypt.

Returns

Type Description
Text

Encrypted value.

Encrypt

Returns plain text as an encrypted value.

procedure Encrypt(PlainText: SecretText): SecretText

Parameters

Name Type Description
PlainText SecretText

The value to encrypt.

Returns

Type Description
SecretText

Encrypted value.

Decrypt

Returns encrypted text as plain text.

procedure Decrypt(CryptedText: Text): Text

Parameters

Name Type Description
CryptedText Text

The value to decrypt.

Returns

Type Description
Text

Plain text.

Decrypt

Returns encrypted text as plain text.

procedure Decrypt(CryptedText: SecretText): SecretText

Parameters

Name Type Description
CryptedText SecretText

The value to decrypt.

Returns

Type Description
SecretText

Plain text.

See also