diff mbox series

[ima-evm-utils,v3,06/13] Update cmd_verify_evm to define and use a local list of public keys

Message ID 20240104190558.3674008-7-zohar@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series Address non concurrency-safe libimaevm global variables | expand

Commit Message

Mimi Zohar Jan. 4, 2024, 7:05 p.m. UTC
Replace calling init_public_keys() with the imaevm_init_public_keys()
version. Similarly replace verify_hash() with the imaevm_verify_hash()
version.

Update the static function verify_evm() definition to include a
"public_keys" parameter.

Free the local public keys list.

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
---
 src/evmctl.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

Comments

Stefan Berger Jan. 9, 2024, 5 p.m. UTC | #1
On 1/4/24 14:05, Mimi Zohar wrote:
> Replace calling init_public_keys() with the imaevm_init_public_keys()
> version. Similarly replace verify_hash() with the imaevm_verify_hash()
> version.
> 
> Update the static function verify_evm() definition to include a
> "public_keys" parameter.
> 
> Free the local public keys list.
> 
> Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>

> ---
>   src/evmctl.c | 20 +++++++++++++++-----
>   1 file changed, 15 insertions(+), 5 deletions(-)
> 
> diff --git a/src/evmctl.c b/src/evmctl.c
> index 5d84a41a0762..29c4d1dc1f0d 100644
> --- a/src/evmctl.c
> +++ b/src/evmctl.c
> @@ -905,7 +905,7 @@ static int cmd_sign_evm(struct command *cmd)
>   	return do_cmd(cmd, sign_evm_path);
>   }
>   
> -static int verify_evm(const char *file)
> +static int verify_evm(struct public_key_entry *public_keys, const char *file)
>   {
>   	unsigned char hash[MAX_DIGEST_SIZE];
>   	unsigned char sig[MAX_SIGNATURE_SIZE];
> @@ -945,11 +945,13 @@ static int verify_evm(const char *file)
>   		return mdlen;
>   	assert(mdlen <= sizeof(hash));
>   
> -	return verify_hash(file, hash, mdlen, sig, len);
> +	return imaevm_verify_hash(public_keys, file, imaevm_params.hash_algo,
> +				  hash, mdlen, sig, len);
>   }
>   
>   static int cmd_verify_evm(struct command *cmd)
>   {
> +	struct public_key_entry *public_keys = NULL;
>   	char *file = g_argv[optind++];
>   	int err;
>   
> @@ -961,14 +963,22 @@ static int cmd_verify_evm(struct command *cmd)
>   
>   	if (imaevm_params.x509) {
>   		if (imaevm_params.keyfile) /* Support multiple public keys */
> -			init_public_keys(imaevm_params.keyfile);
> +			err = imaevm_init_public_keys(imaevm_params.keyfile,
> +						      &public_keys);
>   		else			   /* assume read pubkey from x509 cert */
> -			init_public_keys("/etc/keys/x509_evm.der");
> +			err = imaevm_init_public_keys("/etc/keys/x509_evm.der",
> +						      &public_keys);
> +		if (err < 0) {
> +			log_info("Failed loading public keys");
> +			return err;
> +		}
>   	}
>   
> -	err = verify_evm(file);
> +	err = verify_evm(public_keys, file);
>   	if (!err && imaevm_params.verbose >= LOG_INFO)
>   		log_info("%s: verification is OK\n", file);
> +
> +	imaevm_free_public_keys(public_keys);
>   	return err;
>   }
>
diff mbox series

Patch

diff --git a/src/evmctl.c b/src/evmctl.c
index 5d84a41a0762..29c4d1dc1f0d 100644
--- a/src/evmctl.c
+++ b/src/evmctl.c
@@ -905,7 +905,7 @@  static int cmd_sign_evm(struct command *cmd)
 	return do_cmd(cmd, sign_evm_path);
 }
 
-static int verify_evm(const char *file)
+static int verify_evm(struct public_key_entry *public_keys, const char *file)
 {
 	unsigned char hash[MAX_DIGEST_SIZE];
 	unsigned char sig[MAX_SIGNATURE_SIZE];
@@ -945,11 +945,13 @@  static int verify_evm(const char *file)
 		return mdlen;
 	assert(mdlen <= sizeof(hash));
 
-	return verify_hash(file, hash, mdlen, sig, len);
+	return imaevm_verify_hash(public_keys, file, imaevm_params.hash_algo,
+				  hash, mdlen, sig, len);
 }
 
 static int cmd_verify_evm(struct command *cmd)
 {
+	struct public_key_entry *public_keys = NULL;
 	char *file = g_argv[optind++];
 	int err;
 
@@ -961,14 +963,22 @@  static int cmd_verify_evm(struct command *cmd)
 
 	if (imaevm_params.x509) {
 		if (imaevm_params.keyfile) /* Support multiple public keys */
-			init_public_keys(imaevm_params.keyfile);
+			err = imaevm_init_public_keys(imaevm_params.keyfile,
+						      &public_keys);
 		else			   /* assume read pubkey from x509 cert */
-			init_public_keys("/etc/keys/x509_evm.der");
+			err = imaevm_init_public_keys("/etc/keys/x509_evm.der",
+						      &public_keys);
+		if (err < 0) {
+			log_info("Failed loading public keys");
+			return err;
+		}
 	}
 
-	err = verify_evm(file);
+	err = verify_evm(public_keys, file);
 	if (!err && imaevm_params.verbose >= LOG_INFO)
 		log_info("%s: verification is OK\n", file);
+
+	imaevm_free_public_keys(public_keys);
 	return err;
 }