Simplify cipher and digest lookup in PKCS#7 code.

crypto/pkcs7/pk7_doit.c

@@ -103,7 +103,7 @@ static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7)
 
 BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
 	{
-	int i,j;
+	int i;
 	BIO *out=NULL,*btmp=NULL;
 	X509_ALGOR *xa;
 	const EVP_MD *evp_md;
@@ -161,8 +161,7 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
 				goto err;
 				}
 
-			j=OBJ_obj2nid(xa->algorithm);
-			evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
+			evp_md=EVP_get_digestbyobj(xa->algorithm);
 			if (evp_md == NULL)
 				{
 				PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
@@ -314,7 +313,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
 		md_sk=p7->d.signed_and_enveloped->md_algs;
 		data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
 		enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
-		evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
+		evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
 		if (evp_cipher == NULL)
 			{
 			PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
@@ -326,7 +325,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
 		rsk=p7->d.enveloped->recipientinfo;
 		enc_alg=p7->d.enveloped->enc_data->algorithm;
 		data_body=p7->d.enveloped->enc_data->enc_data;
-		evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
+		evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
 		if (evp_cipher == NULL)
 			{
 			PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
@@ -352,7 +351,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
 				}
 
 			j=OBJ_obj2nid(xa->algorithm);
-			evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
+			evp_md=EVP_get_digestbynid(j);
 			if (evp_md == NULL)
 				{
 				PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);