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sslivsize

Purpose
Get the size of the initialisation vector (IV) required by a symmetric cipher.
Synopsis
function sslivsize(cipalg:string):integer
Argument
cipalg 
Name of the cipher to consider
Return value
Size of a IV in bytes or -1 if the cipher is not supported.
Example
The following statement generates a random IV for the default cipher algorithm: 
sslrandomdata("myiv",sslivsize(""))
Further information
Some encryption algorithms require an initialisation vector (IV) in addition to the encryption key. Like the key, the IV is an array of bytes of a fixed size. This function returns the length (in bytes) of the IV required by a given symmetric cipher algorithm. A return value of -1 indicates an unrecognised algorithm name: this property can be used to check whether a given algorithm is available.
Related topics
sslkeysize
Module
mmssl

Parent Topic Procedures and functions

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