/* DecryptVerifyUpdate continues a multiple-part decryption and verify operation. */
func (c *Ctx) DecryptVerifyUpdate(sh SessionHandle, cipher []byte) ([]byte, error) {
var (
part C.CK_BYTE_PTR
partlen C.CK_ULONG
)
e := C.DecryptVerifyUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&cipher[0])), C.CK_ULONG(len(cipher)), &part, &partlen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(part), C.int(partlen))
C.free(unsafe.Pointer(part))
return h, nil
}
// VerifyRecover verifies a signature in a single-part
// operation, where the data is recovered from the signature.
func (c *Ctx) VerifyRecover(sh SessionHandle, signature []byte) ([]byte, error) {
var (
data C.CK_BYTE_PTR
datalen C.CK_ULONG
)
e := C.DecryptVerifyUpdate(c.ctx, C.CK_SESSION_HANDLE(sh), C.CK_BYTE_PTR(unsafe.Pointer(&signature[0])), C.CK_ULONG(len(signature)), &data, &datalen)
if toError(e) != nil {
return nil, toError(e)
}
h := C.GoBytes(unsafe.Pointer(data), C.int(datalen))
C.free(unsafe.Pointer(data))
return h, nil
}
