Add ASN1 definitions and implementation

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Draft GOST 28147-89 ASN1 params support

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
imit: use NID to set sbox

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
GOST 28147-89 IMIT single-pass mode

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
imit pmeth whitespace fix

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Add GOST R 34.10-2001 ASN.1 methods implementation

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Add GOST R 34.10-2001 pmethods implementation

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>