Encrypt method
Encrypts the contents of the Blob.
Type
NoneSyntax
object.Encrypt Data, OutBlob
The Encrypt(object,Data,OutBlob) syntax has these parts:
| object | An expression evaluating to an object of type wodCrypt. |
| Data | Required. A Blob object. Contains data to be encrypted. |
| OutBlob | Required. A Blob object. Holds encrypted data. |
Remarks
The Encrypt method will encrypt data in a given Blob and store encrypted data in the outgoing Blob. Prior to using it, you must select one of the symmetric algorithms in the
Type property. Most commonly you will use the
AES algorithm since it is today's standard.
wodCrypt supports optimized and standard encryption. When using wodCrypt in
Optimized mode it will prepend internal data to the resulting Blob, containing data size, for example. This is needed because none of the crypto algorithms contain data sizes internally - they only encrypt memory blocks. If you want to share encrypted information to non-wodCrypt libraries, you should NOT use optimized mode. However, in this case, you should always try to provide the input Blob with the proper size (a multiple of the
BlockSize property for the selected type).
When you want to
decrypt data, you must use exactly the same algorithm and secret key! Different algorithms and/or different secret keys will produce completely different encryption results.
Code sample
Dim crypt As New wodCryptCom
Dim i_blob As New MemBlob
Dim o_blob As New MemBlob
i_blob.Text = "this is text to be encrypted"
crypt.Type = AES
crypt.SecretKey = "my secret word"
crypt.Encrypt i_blob, o_blob
Debug.Print o_blob.ToBase64
result:
xHBuQv8ae1vXCVA6/3/YCd5IUjL3lbnbzHDjlWt74fGfcNuS3osQtID1BMhepJI3
Platforms
Windows
