AsymmetricSign

PowerScript function

Description

Calculates the signature of the data with asymmetric
algorithm.

Applies to

CrypterObject objects

Syntax

crypter.AsymmetricSign ( algorithm, variable, privKey)

1	crypter.AsymmetricSign ( algorithm, variable, privKey)

Argument	Description
crypter	The name of the CrypterObject object
algorithm	A value of the AsymmetricAlgorithm enumerated type that specifies the type of asymmetric algorithm. Values are: RSA! – The Rivest-Shamir-Adleman cryptopsystem DSA! – The Digital Signature Algorithm. It is designed to be used in signature, not in encryption and decryption. Rabin! – The Rabin Algorithm
variable	A blob whose value is the data you want to sign with Public-Key cipher. When using the system blob function to convert a string to a blob, it is recommended to specify its encoding argument to be EncodingANSI! (for English characters only) or EncodingUTF8!, otherwise, the default EncodingUTF16LE! will be used.
privKey	A blob specifying the private key.

Return value

Blob. Returns the signature of the data if it succeeds.. If any
argument’s value is null, the method returns null. If an error occurs,
throw the exception.

Examples

This statement signs the data with RAS.

Blob lblb_data
Blob lblb_privKey
Blob lblb_pubKey
Blob lblb_signature

lblb_data = Blob("Test Rsa", EncodingANSI!)

CrypterObject lnv_CrypterObject
lnv_CrypterObject = Create CrypterObject

// Generate the private key
lnv_CrypterObject.AsymmetricGenerateKey(RSA!, 1024, lblb_privKey, lblb_pubKey)

// Sign with RSA
lblb_signature = lnv_CrypterObject.AsymmetricSign(RSA!, lblb_data, lblb_privKey)