OPENSSL_ALGO_DSS1 is the algorithm to use when dealing with DSA keys
OPENSSL_ALGO_DSS1
(integer)
OPENSSL_ALGO_SHA1
(integer)
OPENSSL_ALGO_SHA224
(integer)
OPENSSL_ALGO_SHA256
(integer)
OPENSSL_ALGO_SHA384
(integer)
OPENSSL_ALGO_SHA512
(integer)
OPENSSL_ALGO_RMD160
(integer)
OPENSSL_ALGO_MD5
(integer)
OPENSSL_ALGO_MD4
(integer)
OPENSSL_ALGO_MD2
(integer)