SSL_PKEY_DSA_SIGN
dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
case SSL_PKEY_DSA_SIGN:
NID_sha256, SSL_MD_SHA256_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
NID_sha384, SSL_MD_SHA384_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
NID_sha512, SSL_MD_SHA512_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
NID_sha224, SSL_MD_SHA224_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
NID_sha1, SSL_MD_SHA1_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
case SSL_PKEY_DSA_SIGN:
tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_DSA_SIGN);
&& test_cert_table(EVP_PKEY_DSA, SSL_aDSS, SSL_PKEY_DSA_SIGN)