Commit 5d8d9a8e authored by Dr. Stephen Henson's avatar Dr. Stephen Henson
Browse files

Add DSA_bits() function. 



RT#4637

Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
parent 6c1f368d

crypto/dsa/dsa_ameth.c

+1 −1
Original line number Diff line number Diff line
@@ -254,7 +254,7 @@ static int int_dsa_size(const EVP_PKEY *pkey) 


static int dsa_bits(const EVP_PKEY *pkey)

{

    return BN_num_bits(pkey->pkey.dsa->p);

    return DSA_bits(pkey->pkey.dsa);

}



static int dsa_security_bits(const EVP_PKEY *pkey)

crypto/dsa/dsa_lib.c

+5 −0
Original line number Diff line number Diff line
@@ -339,3 +339,8 @@ ENGINE *DSA_get0_engine(DSA *d) 
{

    return d->engine;

}



int DSA_bits(const DSA *dsa)

{

    return BN_num_bits(dsa->p);

}

doc/crypto/DSA_size.pod

+11 −5
Original line number Diff line number Diff line
@@ -2,25 +2,31 @@ 


=head1 NAME



DSA_size - get DSA signature size

DSA_size, DSA_bits - get DSA signature size or key bits



=head1 SYNOPSIS



 #include <openssl/dsa.h>



 int DSA_size(const DSA *dsa);

 int DSA_bits(const DSA *dsa);



=head1 DESCRIPTION



This function returns the size of an ASN.1 encoded DSA signature in

bytes. It can be used to determine how much memory must be allocated

for a DSA signature.

DSA_size() returns the maximum size of an ASN.1 encoded DSA signature

for key B<dsa> in bytes. It can be used to determine how much memory must

be allocated for a DSA signature.



B<dsa-E<gt>q> must not be B<NULL>.



DSA_bits() returns the number of bits in key B<dsa>: this is the number

of bits in the B<p> parameter.



=head1 RETURN VALUE



The size in bytes.

DSA_size() returns the size in bytes.



DSA_bits() returns the number of bits in the key.



=head1 SEE ALSO

include/openssl/dsa.h

+1 −0
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ void DSA_free(DSA *r); 
/* "up" the DSA object's reference count */

int DSA_up_ref(DSA *r);

int DSA_size(const DSA *);

int DSA_bits(const DSA *d);

int DSA_security_bits(const DSA *d);

        /* next 4 return -1 on error */

int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp);