File 0013-appended-signature-Support-two-certificate... of Package qemu

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File 0013-appended-signature-Support-two-certificates.patch of Package qemu (Revision e39cbf5a7cef6f091de5c6d4d3e7e4f0)

Currently displaying revision e39cbf5a7cef6f091de5c6d4d3e7e4f0 , Show latest

From 63eb79772de45f7e3a07039eb248b8c8384a6b85 Mon Sep 17 00:00:00 2001
From: Michal Suchanek <msuchanek@suse.de>
Date: Wed, 5 Jan 2022 17:10:06 +0100
Subject: [PATCH] appended signature: Support two certificates.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
 lib/libcrypto/appended_sig.c |  72 +++++++++++++---------
 lib/libcrypto/certificate.h  | 112 +++++++++++++++++++++++++++++++++++
 2 files changed, 156 insertions(+), 28 deletions(-)

diff --git a/lib/libcrypto/appended_sig.c b/lib/libcrypto/appended_sig.c
index 6b7c0cd..f3d6de5 100644
--- a/lib/libcrypto/appended_sig.c
+++ b/lib/libcrypto/appended_sig.c
@@ -32,10 +32,43 @@ int is_secureboot() {
 	return 1;
 }
 
+static int verify_one_cert(mbedtls_pkcs7 *pkcs7, const void *blob, size_t bloblen, const void *cert, size_t certlen, const char *certdesc)
+{
+	mbedtls_x509_crt *x509 = malloc(sizeof(mbedtls_x509_crt));
+	int rc = 0;
+
+	mbedtls_x509_crt_init(x509);
+	printf("%d\n", __LINE__);
+	rc = mbedtls_x509_crt_parse_der(x509, cert, certlen);
+	if (rc) {
+		printf("%d\n", __LINE__);
+
+		printf("Appended signature: internal error parsing %s x509 certificate.\n", certdesc);
+		rc = 0;
+		goto exit_x509;
+	}
+	printf("%d\n", __LINE__);
+
+	rc = mbedtls_pkcs7_signed_data_verify(pkcs7, x509, blob, bloblen);
+	printf("Appended signature: %sverified by %s x509 certificate.\n", rc ? "NOT " : "" , certdesc);
+	if (rc) {
+		printf("%d\n", __LINE__);
+		rc = 0;
+		goto exit_x509;
+	}
+
+	rc = 1;
+
+exit_x509:
+	mbedtls_x509_crt_free(x509);
+	free(x509);
+
+	return rc;
+}
+
 int verify_appended_signature(void *blob, size_t len) {
 	void *ptr;
 	mbedtls_pkcs7 *pkcs7;
-	mbedtls_x509_crt *x509;
 	int rc = 0;
 	struct module_signature *modsig;
 
@@ -69,48 +102,31 @@ int verify_appended_signature(void *blob, size_t len) {
 	// point at the pkcs7 data itself:
 	ptr -= modsig->sig_len;
 
+	printf("%d\n", __LINE__);
+	printf("ptr at %p, blob at %p, computed len %lu ? %lu\n", ptr, blob, len-(ptr-blob), (unsigned long)(ptr-blob));
+
 	// load into the pkcs7 code
 	pkcs7 = malloc(sizeof(mbedtls_pkcs7));
 	mbedtls_pkcs7_init(pkcs7);
 
-
 	rc = mbedtls_pkcs7_parse_der(ptr, modsig->sig_len, pkcs7);
 	if (rc != MBEDTLS_PKCS7_SIGNED_DATA) {
 		printf("Appended signature: error parsing PKCS#7 data: %d. Aborting.\n", rc);
 		rc = 0;
 		goto exit;
 	}
-
-	x509 = malloc(sizeof(mbedtls_x509_crt));
-	mbedtls_x509_crt_init(x509);
-	printf("%d\n", __LINE__);
-	rc = mbedtls_x509_crt_parse_der(x509, certificate_der, certificate_der_len);
-	if (rc) {
 	printf("%d\n", __LINE__);
 
-		printf("Appended signature: internal error parsing builtin x509 certificate. Aborting.\n");
-		rc = 0;
-		goto exit_x509;
-	}
-	printf("%d\n", __LINE__);
+	rc = verify_one_cert(pkcs7, blob, (ptr-blob), certificate_SLE_crt, certificate_SLE_crt_len, "SLE");
+	if (rc)
+	    goto exit;
 
-	printf("ptr at %p, blob at %p, computed len %lu ? %lu\n", ptr, blob, len-(ptr-blob), (unsigned long)(ptr-blob));
+	rc = verify_one_cert(pkcs7, blob, (ptr-blob), certificate_der, certificate_der_len, "project");
+	if (rc)
+	    goto exit;
 
-	rc = mbedtls_pkcs7_signed_data_verify(pkcs7, x509, blob, (ptr - blob));
-	if (rc) {
-	printf("%d\n", __LINE__);
-		printf("Appended signature: verification failed. Refusing to proceed.\n");
-		rc = 0;
-		goto exit_x509;
-	}
 	printf("%d\n", __LINE__);
-
-	rc = 1;
-
-exit_x509:
-	mbedtls_x509_crt_free(x509);
-	free(x509);
-
+	printf("Appended signature: verification failed. Refusing to proceed.\n");
 exit:
 	mbedtls_pkcs7_free(pkcs7);
 	free(pkcs7);
diff --git a/lib/libcrypto/certificate.h b/lib/libcrypto/certificate.h
index b48f1ee..88d2e4b 100644
--- a/lib/libcrypto/certificate.h
+++ b/lib/libcrypto/certificate.h
@@ -116,3 +116,115 @@ unsigned char certificate_der[] = {
   0x61
 };
 unsigned int certificate_der_len = 1369;
+
+unsigned char certificate_SLE_crt[] = {
+  0x30, 0x82, 0x05, 0x04, 0x30, 0x82, 0x03, 0xec, 0xa0, 0x03, 0x02, 0x01,
+  0x02, 0x02, 0x09, 0x00, 0xed, 0x87, 0x85, 0xb7, 0x8f, 0xfc, 0x12, 0x7e,
+  0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
+  0x0b, 0x05, 0x00, 0x30, 0x81, 0xa6, 0x31, 0x2d, 0x30, 0x2b, 0x06, 0x03,
+  0x55, 0x04, 0x03, 0x0c, 0x24, 0x53, 0x55, 0x53, 0x45, 0x20, 0x4c, 0x69,
+  0x6e, 0x75, 0x78, 0x20, 0x45, 0x6e, 0x74, 0x65, 0x72, 0x70, 0x72, 0x69,
+  0x73, 0x65, 0x20, 0x53, 0x65, 0x63, 0x75, 0x72, 0x65, 0x20, 0x42, 0x6f,
+  0x6f, 0x74, 0x20, 0x43, 0x41, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55,
+  0x04, 0x06, 0x13, 0x02, 0x44, 0x45, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03,
+  0x55, 0x04, 0x07, 0x0c, 0x09, 0x4e, 0x75, 0x72, 0x65, 0x6d, 0x62, 0x65,
+  0x72, 0x67, 0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c,
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+  0x50, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x74, 0x73, 0x20, 0x47, 0x6d, 0x62,
+  0x48, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x0c, 0x0a,
+  0x42, 0x75, 0x69, 0x6c, 0x64, 0x20, 0x54, 0x65, 0x61, 0x6d, 0x31, 0x1c,
+  0x30, 0x1a, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x09,
+  0x01, 0x16, 0x0d, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x40, 0x73, 0x75, 0x73,
+  0x65, 0x2e, 0x64, 0x65, 0x30, 0x1e, 0x17, 0x0d, 0x32, 0x31, 0x30, 0x33,
+  0x30, 0x38, 0x31, 0x30, 0x31, 0x35, 0x30, 0x38, 0x5a, 0x17, 0x0d, 0x33,
+  0x30, 0x31, 0x32, 0x33, 0x31, 0x31, 0x30, 0x31, 0x35, 0x30, 0x38, 0x5a,
+  0x30, 0x81, 0xab, 0x31, 0x32, 0x30, 0x30, 0x06, 0x03, 0x55, 0x04, 0x03,
+  0x0c, 0x29, 0x53, 0x55, 0x53, 0x45, 0x20, 0x4c, 0x69, 0x6e, 0x75, 0x78,
+  0x20, 0x45, 0x6e, 0x74, 0x65, 0x72, 0x70, 0x72, 0x69, 0x73, 0x65, 0x20,
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+  0x06, 0x03, 0x55, 0x04, 0x07, 0x0c, 0x09, 0x4e, 0x75, 0x72, 0x65, 0x6d,
+  0x62, 0x65, 0x72, 0x67, 0x31, 0x21, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x04,
+  0x0a, 0x0c, 0x18, 0x53, 0x55, 0x53, 0x45, 0x20, 0x4c, 0x69, 0x6e, 0x75,
+  0x78, 0x20, 0x50, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x74, 0x73, 0x20, 0x47,
+  0x6d, 0x62, 0x48, 0x31, 0x13, 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x0b,
+  0x0c, 0x0a, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x20, 0x54, 0x65, 0x61, 0x6d,
+  0x31, 0x1c, 0x30, 0x1a, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
+  0x01, 0x09, 0x01, 0x16, 0x0d, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x40, 0x73,
+  0x75, 0x73, 0x65, 0x2e, 0x64, 0x65, 0x30, 0x82, 0x01, 0x22, 0x30, 0x0d,
+  0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05,
+  0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82,
+  0x01, 0x01, 0x00, 0xb6, 0xf0, 0x29, 0x43, 0x8a, 0xa0, 0xc4, 0x38, 0x9b,
+  0x3a, 0x96, 0x2e, 0x7c, 0x5c, 0x90, 0x1b, 0x71, 0xc3, 0xb1, 0x0b, 0xf0,
+  0x8c, 0xf7, 0xeb, 0x40, 0x77, 0x58, 0xaa, 0x47, 0x0a, 0x0d, 0x9b, 0xf3,
+  0x84, 0xa1, 0x49, 0x4a, 0x90, 0x2e, 0xe2, 0x0b, 0xa5, 0x92, 0xe2, 0xa7,
+  0x39, 0xe3, 0x0e, 0xd7, 0xe7, 0x9c, 0xa4, 0xe0, 0xbd, 0x7f, 0x41, 0xba,
+  0x99, 0xb2, 0x30, 0x60, 0x2b, 0x0c, 0xfc, 0x62, 0x81, 0x09, 0x42, 0x91,
+  0x41, 0x93, 0xce, 0x07, 0x97, 0x92, 0x78, 0x65, 0x3e, 0x34, 0x96, 0x88,
+  0x5d, 0x5e, 0x88, 0x8a, 0x68, 0x5f, 0x62, 0x2d, 0xcc, 0x5e, 0x68, 0x5e,
+  0x56, 0xb3, 0xfa, 0xe1, 0x77, 0x7a, 0xa6, 0xf7, 0x27, 0xfe, 0x2a, 0x65,
+  0x93, 0x62, 0x0f, 0x2d, 0xb6, 0xdd, 0x8c, 0x87, 0xa2, 0x48, 0x89, 0xa0,
+  0xd7, 0x1b, 0x5f, 0x9e, 0xb7, 0x1a, 0x59, 0xaf, 0xad, 0xcc, 0xe3, 0x2e,
+  0x30, 0x04, 0x1f, 0x17, 0x8c, 0x14, 0x95, 0x59, 0xc5, 0x17, 0x83, 0xe7,
+  0x87, 0x48, 0x28, 0x4b, 0x6b, 0x2f, 0xd8, 0xb8, 0xf7, 0x7d, 0x54, 0x38,
+  0x5d, 0x5e, 0xdd, 0xf1, 0xbb, 0x01, 0xf6, 0x0c, 0x1d, 0x59, 0x24, 0x10,
+  0x33, 0x06, 0xd2, 0x6f, 0x94, 0x97, 0xa2, 0x22, 0xd9, 0x38, 0x8a, 0xd9,
+  0x88, 0x8f, 0xe7, 0xe8, 0x30, 0xf9, 0x50, 0xbf, 0x18, 0x6a, 0x9f, 0xb6,
+  0x7f, 0x9b, 0x01, 0x5c, 0x0d, 0x4c, 0xb6, 0x89, 0xd7, 0xf7, 0x53, 0x12,
+  0x52, 0xee, 0xbc, 0x56, 0x1e, 0xe5, 0xff, 0xd5, 0x17, 0x12, 0x7b, 0x64,
+  0xc7, 0x96, 0xf2, 0x39, 0xd4, 0x40, 0x2b, 0x19, 0xdd, 0x22, 0x99, 0xcf,
+  0x41, 0x06, 0xb3, 0x85, 0x7b, 0x50, 0xa0, 0x5b, 0x24, 0x3e, 0xd5, 0x73,
+  0x2a, 0xcf, 0xbc, 0x8c, 0x87, 0xa6, 0x0c, 0xea, 0x2c, 0x9f, 0xb7, 0x13,
+  0x90, 0x18, 0x0e, 0x10, 0xfe, 0x3d, 0x89, 0x02, 0x03, 0x01, 0x00, 0x01,
+  0xa3, 0x82, 0x01, 0x2c, 0x30, 0x82, 0x01, 0x28, 0x30, 0x0c, 0x06, 0x03,
+  0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x02, 0x30, 0x00, 0x30, 0x1d,
+  0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14, 0x5a, 0x24, 0x04,
+  0x49, 0xd2, 0x9f, 0xd0, 0xd8, 0xa7, 0xa1, 0x87, 0xe6, 0xfc, 0x0e, 0x26,
+  0xb9, 0x5d, 0x1a, 0xa8, 0x7b, 0x30, 0x81, 0xd3, 0x06, 0x03, 0x55, 0x1d,
+  0x23, 0x04, 0x81, 0xcb, 0x30, 0x81, 0xc8, 0x80, 0x14, 0xec, 0xab, 0x0d,
+  0x42, 0xc4, 0x56, 0xcf, 0x77, 0x04, 0x36, 0xb9, 0x73, 0x99, 0x38, 0x62,
+  0x96, 0x5e, 0x87, 0x26, 0x2f, 0xa1, 0x81, 0xac, 0xa4, 0x81, 0xa9, 0x30,
+  0x81, 0xa6, 0x31, 0x2d, 0x30, 0x2b, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c,
+  0x24, 0x53, 0x55, 0x53, 0x45, 0x20, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20,
+  0x45, 0x6e, 0x74, 0x65, 0x72, 0x70, 0x72, 0x69, 0x73, 0x65, 0x20, 0x53,
+  0x65, 0x63, 0x75, 0x72, 0x65, 0x20, 0x42, 0x6f, 0x6f, 0x74, 0x20, 0x43,
+  0x41, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02,
+  0x44, 0x45, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x07, 0x0c,
+  0x09, 0x4e, 0x75, 0x72, 0x65, 0x6d, 0x62, 0x65, 0x72, 0x67, 0x31, 0x21,
+  0x30, 0x1f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x18, 0x53, 0x55, 0x53,
+  0x45, 0x20, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x50, 0x72, 0x6f, 0x64,
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+  0x11, 0x06, 0x03, 0x55, 0x04, 0x0b, 0x0c, 0x0a, 0x42, 0x75, 0x69, 0x6c,
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+  0xff, 0x04, 0x04, 0x03, 0x02, 0x07, 0x80, 0x30, 0x13, 0x06, 0x03, 0x55,
+  0x1d, 0x25, 0x04, 0x0c, 0x30, 0x0a, 0x06, 0x08, 0x2b, 0x06, 0x01, 0x05,
+  0x05, 0x07, 0x03, 0x03, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86,
+  0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, 0x82, 0x01, 0x01, 0x00,
+  0xa8, 0x52, 0x38, 0x95, 0x54, 0x1f, 0xde, 0x17, 0xa1, 0xd1, 0x35, 0xab,
+  0x67, 0x07, 0x34, 0x7a, 0x3d, 0xf4, 0xa7, 0x51, 0x21, 0x54, 0x99, 0xac,
+  0x37, 0x10, 0xb2, 0xfe, 0x6b, 0x67, 0xe8, 0x80, 0xe4, 0x47, 0x39, 0xb3,
+  0x01, 0xef, 0x45, 0xfd, 0x3c, 0x79, 0x07, 0xa2, 0xb2, 0xb6, 0x3b, 0x63,
+  0xd9, 0x6b, 0xd4, 0xda, 0x63, 0xa1, 0x8c, 0x35, 0xba, 0xd5, 0x37, 0x6f,
+  0x93, 0x65, 0x01, 0xaa, 0x56, 0xa9, 0x4d, 0xb4, 0xf4, 0x5f, 0x6a, 0x05,
+  0x0a, 0x8e, 0x30, 0xc3, 0xc8, 0x26, 0xda, 0xe0, 0xf2, 0x63, 0x79, 0xc2,
+  0x10, 0xcd, 0x23, 0x74, 0xf8, 0xfc, 0x5e, 0x70, 0x3e, 0x4f, 0xea, 0xda,
+  0xc7, 0x07, 0x30, 0xe8, 0xda, 0x2c, 0x2b, 0x72, 0x7a, 0x83, 0xe6, 0xc4,
+  0x5a, 0x39, 0x17, 0xd2, 0x55, 0xab, 0xca, 0x5d, 0x63, 0x83, 0x1b, 0x80,
+  0xab, 0x7c, 0xee, 0xa7, 0x8b, 0x76, 0xae, 0x5e, 0xfd, 0xdb, 0x3f, 0xa7,
+  0x01, 0x40, 0x26, 0x09, 0x2a, 0xec, 0x61, 0xe4, 0x10, 0xc6, 0x72, 0x88,
+  0x78, 0x2b, 0xd9, 0x09, 0x83, 0x06, 0x82, 0x2c, 0x52, 0xa1, 0x8a, 0xef,
+  0xd9, 0x2c, 0x43, 0xf2, 0x14, 0xc5, 0x0b, 0xc5, 0xd6, 0xeb, 0x4e, 0xaf,
+  0x21, 0x35, 0x5b, 0xf5, 0xfc, 0x5a, 0x60, 0x5d, 0x5c, 0x0a, 0x30, 0x8b,
+  0x8e, 0x19, 0x10, 0xa6, 0x77, 0xa0, 0x56, 0x24, 0xf4, 0x99, 0x5e, 0x50,
+  0x70, 0xf5, 0xbf, 0x20, 0x88, 0xea, 0x2a, 0x56, 0xb5, 0x37, 0xdb, 0x07,
+  0xdb, 0xa6, 0xee, 0x17, 0x07, 0x09, 0x20, 0x75, 0xd0, 0x44, 0x1e, 0x21,
+  0xd5, 0xba, 0x15, 0xb4, 0x8a, 0xa2, 0x41, 0x93, 0x9e, 0xe0, 0x18, 0xc6,
+  0x45, 0x3b, 0xd1, 0x20, 0xb1, 0x8e, 0x6b, 0xf5, 0x97, 0x9f, 0xc5, 0x21,
+  0x42, 0xf3, 0x1c, 0xdf, 0xd6, 0xc2, 0xaf, 0x54, 0xb1, 0x31, 0x1b, 0xe9,
+  0x09, 0x5e, 0xf3, 0x2b
+};
+unsigned int certificate_SLE_crt_len = 1288;
-- 
2.34.1

Places

File 0013-appended-signature-Support-two-certificates.patch of Package qemu (Revision e39cbf5a7cef6f091de5c6d4d3e7e4f0)

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