Correct error reason of verify_signature() in cmp_vfy.c

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11998)

crypto/cmp/cmp_err.c

@@ -76,6 +76,8 @@ static const ERR_STRING_DATA CMP_str_reasons[] = {
     "error unexpected certconf"},
     {ERR_PACK(ERR_LIB_CMP, 0, CMP_R_ERROR_VALIDATING_PROTECTION),
     "error validating protection"},
+    {ERR_PACK(ERR_LIB_CMP, 0, CMP_R_ERROR_VALIDATING_SIGNATURE),
+    "error validating signature"},
     {ERR_PACK(ERR_LIB_CMP, 0, CMP_R_FAILED_EXTRACTING_PUBKEY),
     "failed extracting pubkey"},
     {ERR_PACK(ERR_LIB_CMP, 0, CMP_R_FAILURE_OBTAINING_RANDOM),

crypto/cmp/cmp_vfy.c

@@ -95,7 +95,7 @@ static int verify_signature(const OSSL_CMP_CTX *cmp_ctx,
 
  sig_err:
     res = x509_print_ex_brief(bio, cert, X509_FLAG_NO_EXTENSIONS);
-    CMPerr(0, CMP_R_ERROR_VALIDATING_PROTECTION);
+    CMPerr(0, CMP_R_ERROR_VALIDATING_SIGNATURE);
     if (res)
         ERR_add_error_mem_bio("\n", bio);
     res = 0;

crypto/err/openssl.txt

@@ -2116,6 +2116,7 @@ CMP_R_ERROR_PROTECTING_MESSAGE:127:error protecting message
 CMP_R_ERROR_SETTING_CERTHASH:128:error setting certhash
 CMP_R_ERROR_UNEXPECTED_CERTCONF:160:error unexpected certconf
 CMP_R_ERROR_VALIDATING_PROTECTION:140:error validating protection
+CMP_R_ERROR_VALIDATING_SIGNATURE:171:error validating signature
 CMP_R_FAILED_EXTRACTING_PUBKEY:141:failed extracting pubkey
 CMP_R_FAILURE_OBTAINING_RANDOM:110:failure obtaining random
 CMP_R_FAIL_INFO_OUT_OF_RANGE:129:fail info out of range

include/openssl/cmperr.h

@@ -10,6 +10,7 @@
 
 #ifndef OPENSSL_CMPERR_H
 # define OPENSSL_CMPERR_H
+# pragma once
 
 # include <openssl/opensslconf.h>
 # include <openssl/symhacks.h>
@@ -68,6 +69,7 @@ int ERR_load_CMP_strings(void);
 #  define CMP_R_ERROR_SETTING_CERTHASH                     128
 #  define CMP_R_ERROR_UNEXPECTED_CERTCONF                  160
 #  define CMP_R_ERROR_VALIDATING_PROTECTION                140
+#  define CMP_R_ERROR_VALIDATING_SIGNATURE                 171
 #  define CMP_R_FAILED_EXTRACTING_PUBKEY                   141
 #  define CMP_R_FAILURE_OBTAINING_RANDOM                   110
 #  define CMP_R_FAIL_INFO_OUT_OF_RANGE                     129