MBFile

[MbarkT3STO]

Definition :

For encrypt and decrypt files

State :

Static class

Methods :

Method	Description	Returns data type	Overloads
Encrypt	Encrypt a file using a custom Key and/or IV	FileEncryptionModel	6
EncryptWithoutKey	Encrypt a file without Key and IV	FileEncryptionModel	2
Decrypt	Decrypt an encrypted file using a custom Key and/or IV used in encryption operation	FileDecryptionModel	2
DecryptWithoutKey	Decrypt an encrypted file using EncryptWithoutKey method	FileDecryptionModel	-

Details :

Encrypt

Encrypt a file using a custom Key and/or IV

1st three overloads

Parameter	Description	Case	Type	Rules
FileBytes	File to be encrypted as Bytes	Required	Byte[]	-
Key	Your key	Optional	Byte[]	Should be 8 bytes
IV	Your IV	Optional	Byte[]	-

2nd three overloads

Parameter	Description	Case	Type	Rules
FilePath	File path to be encrypted	Required	String	-
Key	Your key	Optional	Byte[]	Should be 8 bytes
IV	Your IV	Optional	Byte[]	-

EncryptWithoutKey

Encrypt a file without Key and IV

1st Overload

Parameter	Description	Case	Type	Rules
FileBytes	File to be encrypted as Bytes	Required	Byte[]	-

2nd Overload

Parameter	Description	Case	Type	Rules
FilePath	File path to be encrypted	Required	String	-

Decrypt

Decrypt encrypted file bytes using a custom Key and/or IV used in the encryption operation

Parameter	Description	Case	Type	Rules
EncryptedFile	Encrypted file bytes to be decrypted	Required	Byte[]	A Bytes value already encrypted using MBSecurity
Key	Your key	Required	Byte[]	The encrypted Key used in encryption
IV	Your IV	Optional	Byte[]	The same IV used in encryption

• Note : the Key parameter in decryption should converted from base 64 string to bytes, to do that when sending the key use .FromBase64ToBytes() extension method provided by MBSecurity.

DecryptWithoutKey

Decrypt a file already encrypted using EncryptWithoutKey method

Parameter	Description	Case	Type	Rules
EncryptedFile	Encrypted file bytes to be decrypted	Required	Byte[]	A Bytes value already encrypted using MBSecurity

Important notes

• One only case to use DecryptWithoutKey method, if you encrypt your data using EncryptWithoutKey
• If you encrypt your data whether Encrypt or EncryptWithoutKey you will get a value type FileEncryptionModel has two properties (Key and EncryptedBytes)
• The Key is your or auto-generated key used in encryption
• The Key returned after encryption is encrypted