Add -keyopt option to cms utility.

Add support for custom public key parameters in the cms utility using
the -keyopt switch. Works for -sign and also -encrypt if -recip is used.

apps/cms.c

@@ -74,6 +74,8 @@ static void receipt_request_print(BIO *out, CMS_ContentInfo *cms);
 static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING) *rr_to,
 						int rr_allorfirst,
 					STACK_OF(OPENSSL_STRING) *rr_from);
+static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
+			STACK_OF(OPENSSL_STRING) *param);
 
 #define SMIME_OP	0x10
 #define SMIME_IP	0x20
@@ -97,6 +99,15 @@ static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING) *rr_to,
 
 int verify_err = 0;
 
+typedef struct cms_key_param_st cms_key_param;
+
+struct cms_key_param_st
+	{
+	int idx;
+	STACK_OF(OPENSSL_STRING)*param;
+	cms_key_param *next;
+	};
+
 int MAIN(int, char **);
 
 int MAIN(int argc, char **argv)
@@ -139,6 +150,8 @@ int MAIN(int argc, char **argv)
 	unsigned char *pwri_pass = NULL, *pwri_tmp = NULL;
 	size_t secret_keylen = 0, secret_keyidlen = 0;
 
+	cms_key_param *key_first = NULL, *key_param = NULL;
+
 	ASN1_OBJECT *econtent_type = NULL;
 
 	X509_VERIFY_PARAM *vpm = NULL;
@@ -412,7 +425,20 @@ int MAIN(int argc, char **argv)
 			{
 			if (!args[1])
 				goto argerr;
-			recipfile = *++args;
+			if (operation == SMIME_ENCRYPT)
+				{
+				if (!encerts)
+					encerts = sk_X509_new_null();
+				cert = load_cert(bio_err,*++args,FORMAT_PEM,
+						NULL, e,
+						"recipient certificate file");
+				if (!cert)
+					goto end;
+				sk_X509_push(encerts, cert);
+				cert = NULL;
+				}
+			else	
+				recipfile = *++args;
 			}
 		else if (!strcmp (*args, "-certsout"))
 			{
@@ -460,6 +486,43 @@ int MAIN(int argc, char **argv)
 				goto argerr;
 			keyform = str2fmt(*++args);
 			}
+		else if (!strcmp (*args, "-keyopt"))
+			{
+			int keyidx = -1;
+			if (!args[1])
+				goto argerr;
+			if (operation == SMIME_ENCRYPT)
+				{
+				if (encerts)
+					keyidx += sk_X509_num(encerts);
+				}
+			else
+				{
+				if (keyfile || signerfile)
+					keyidx++;
+				if (skkeys)
+					keyidx += sk_OPENSSL_STRING_num(skkeys);
+				}
+			if (keyidx < 0)
+				{
+				BIO_printf(bio_err, "No key specified\n");
+				goto argerr;
+				}
+			if (key_param == NULL || key_param->idx != keyidx)
+				{
+				cms_key_param *nparam;
+				nparam = OPENSSL_malloc(sizeof(cms_key_param));
+				nparam->idx = keyidx;
+				nparam->param = sk_OPENSSL_STRING_new_null();
+				nparam->next = NULL;
+				if (key_first == NULL)
+					key_first = nparam;
+				else
+					key_param->next = nparam;
+				key_param = nparam;
+				}
+			sk_OPENSSL_STRING_push(key_param->param, *++args);
+			}
 		else if (!strcmp (*args, "-rctform"))
 			{
 			if (!args[1])
@@ -577,7 +640,7 @@ int MAIN(int argc, char **argv)
 		}
 	else if (operation == SMIME_ENCRYPT)
 		{
-		if (!*args && !secret_key && !pwri_pass)
+		if (!*args && !secret_key && !pwri_pass && !encerts)
 			{
 			BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 			badarg = 1;
@@ -633,6 +696,7 @@ int MAIN(int argc, char **argv)
 		BIO_printf (bio_err, "-inform arg    input format SMIME (default), PEM or DER\n");
 		BIO_printf (bio_err, "-inkey file    input private key (if not signer or recipient)\n");
 		BIO_printf (bio_err, "-keyform arg   input private key format (PEM or ENGINE)\n");
+		BIO_printf (bio_err, "-keyopt nm:v   set public key parameters\n");
 		BIO_printf (bio_err, "-out file      output file\n");
 		BIO_printf (bio_err, "-outform arg   output format SMIME (default), PEM or DER\n");
 		BIO_printf (bio_err, "-content file  supply or override content for detached signature\n");
@@ -718,7 +782,7 @@ int MAIN(int argc, char **argv)
 			goto end;
 			}
 
-		if (*args)
+		if (*args && !encerts)
 			encerts = sk_X509_new_null();
 		while (*args)
 			{
@@ -912,10 +976,37 @@ int MAIN(int argc, char **argv)
 		}
 	else if (operation == SMIME_ENCRYPT)
 		{
+		int i;
 		flags |= CMS_PARTIAL;
-		cms = CMS_encrypt(encerts, in, cipher, flags);
+		cms = CMS_encrypt(NULL, in, cipher, flags);
 		if (!cms)
 			goto end;
+		for (i = 0; i < sk_X509_num(encerts); i++)
+			{
+			CMS_RecipientInfo *ri;
+			cms_key_param *kparam;
+			int tflags = flags;
+			X509 *x = sk_X509_value(encerts, i);
+			for(kparam = key_first; kparam; kparam = kparam->next)
+				{
+				if(kparam->idx == i)
+					{
+					tflags |= CMS_KEY_PARAM;
+					break;
+					}
+				}
+			ri = CMS_add1_recipient_cert(cms, x, tflags);
+			if (!ri)
+				goto end;
+			if (kparam)
+				{
+				EVP_PKEY_CTX *pctx;
+				pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
+				if (!cms_set_pkey_param(pctx, kparam->param))
+					goto end;
+				}
+			}
+
 		if (secret_key)
 			{
 			if (!CMS_add0_recipient_key(cms, NID_undef, 
@@ -1004,8 +1095,11 @@ int MAIN(int argc, char **argv)
 		for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++)
 			{
 			CMS_SignerInfo *si;
+			cms_key_param *kparam;
+			int tflags = flags;
 			signerfile = sk_OPENSSL_STRING_value(sksigners, i);
 			keyfile = sk_OPENSSL_STRING_value(skkeys, i);
+
 			signer = load_cert(bio_err, signerfile,FORMAT_PEM, NULL,
 					e, "signer certificate");
 			if (!signer)
@@ -1014,9 +1108,24 @@ int MAIN(int argc, char **argv)
 			       "signing key file");
 			if (!key)
 				goto end;
-			si = CMS_add1_signer(cms, signer, key, sign_md, flags);
+			for(kparam = key_first; kparam; kparam = kparam->next)
+				{
+				if(kparam->idx == i)
+					{
+					tflags |= CMS_KEY_PARAM;
+					break;
+					}
+				}
+			si = CMS_add1_signer(cms, signer, key, sign_md, tflags);
 			if (!si)
 				goto end;
+			if (kparam)
+				{
+				EVP_PKEY_CTX *pctx;
+				pctx = CMS_SignerInfo_get0_pkey_ctx(si);
+				if (!cms_set_pkey_param(pctx, kparam->param))
+					goto end;
+				}
 			if (rr && !CMS_add1_ReceiptRequest(si, rr))
 				goto end;
 			X509_free(signer);
@@ -1210,6 +1319,14 @@ end:
 		sk_OPENSSL_STRING_free(rr_to);
 	if (rr_from)
 		sk_OPENSSL_STRING_free(rr_from);
+	for(key_param = key_first; key_param;)
+		{
+		cms_key_param *tparam;
+		sk_OPENSSL_STRING_free(key_param->param);
+		tparam = key_param->next;
+		OPENSSL_free(key_param);
+		key_param = tparam;
+		}
 	X509_STORE_free(store);
 	X509_free(cert);
 	X509_free(recip);
@@ -1394,4 +1511,25 @@ static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING) *rr_to,
 	return NULL;
 	}
 
+static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
+			STACK_OF(OPENSSL_STRING) *param)
+	{
+	char *keyopt;
+	int i;
+	if (sk_OPENSSL_STRING_num(param) <= 0)
+		return 1;
+	for (i = 0; i < sk_OPENSSL_STRING_num(param); i++)
+		{
+		keyopt = sk_OPENSSL_STRING_value(param, i);
+		if (pkey_ctrl_string(pctx, keyopt) <= 0)
+			{
+			BIO_printf(bio_err, "parameter error \"%s\"\n",
+						keyopt);
+			ERR_print_errors(bio_err);
+			return 0;
+			}
+		}
+	return 1;
+	}
+
 #endif