Common Data Security Architecture (CDSA) White Paper

68 Chapter1

Validating the CSP Credentials

Figure 1-10 Verifying the authenticity of data in the .MF ﬁle

4. If these hashes match, a hash of the shared library to be loaded is calculated. The hash is

then compared to the pre-calculated value in the .MF ﬁle, as shown in Figure 1-11 on page

69.

.MF file,

containing

hash of

shared library

and library

name

.SF file, containing hash

of data in .MF file

SHA-1

HASH

function

Are

SHA-1

hashes

equal?

Proceed to verify hash

of shared library

.MF or .SF file

has been

tampered with.

STOP!

Yes