Signed receipt generation code.

[openssl.git] / crypto / cms / cms_ess.c

diff --git a/crypto/cms/cms_ess.c b/crypto/cms/cms_ess.c
index ff9b2a86f276a13fe39f1ef1447ef0d5e72b1c2e..b2ff4fc59534849899e6566267f084048448e24e 100644 (file)
--- a/crypto/cms/cms_ess.c
+++ b/crypto/cms/cms_ess.c
@@ -190,6 +190,8 @@ void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
                *prto = rr->receiptsTo;
        }
 
+/* Digest a SignerInfo structure for msgSigDigest attribute processing */
+
 static int cms_msgSigDigest(CMS_SignerInfo *si,
                                unsigned char *dig, unsigned int *diglen)
        {
@@ -203,6 +205,26 @@ static int cms_msgSigDigest(CMS_SignerInfo *si,
        return 1;
        }
 
+/* Add a msgSigDigest attribute to a SignerInfo */
+
+int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
+       {
+       unsigned char dig[EVP_MAX_MD_SIZE];
+       unsigned int diglen;
+       if (!cms_msgSigDigest(src, dig, &diglen))
+               {
+               CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
+               return 0;
+               }
+       if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
+                                       V_ASN1_OCTET_STRING, dig, diglen))
+               {
+               CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
+               return 0;
+               }
+       return 1;
+       }
+
 /* Verify signed receipt after it has already passed normal CMS verify */
 
 int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
@@ -348,3 +370,52 @@ int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
        return r;
 
        }
+
+/* Encode a Receipt into an OCTET STRING read for including into content of
+ * a SignedData ContentInfo.
+ */
+
+ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
+       {
+       CMS_Receipt rct;
+       CMS_ReceiptRequest *rr = NULL;
+       ASN1_OBJECT *ctype;
+       ASN1_OCTET_STRING *os = NULL;
+
+       /* Get original receipt request */
+
+       /* Get original receipt request details */
+
+       if (!CMS_get1_ReceiptRequest(si, &rr))
+               {
+               CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
+               goto err;
+               }
+
+       /* Get original content type */
+
+       ctype = CMS_signed_get0_data_by_OBJ(si,
+                               OBJ_nid2obj(NID_pkcs9_contentType),
+                                       -3, V_ASN1_OBJECT);
+       if (!ctype)
+               {
+               CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
+               goto err;
+               }
+
+       rct.version = 1;
+       rct.contentType = ctype;
+       rct.signedContentIdentifier = rr->signedContentIdentifier;
+       rct.originatorSignatureValue = si->signature;
+
+       os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
+
+       err:
+       if (rr)
+               CMS_ReceiptRequest_free(rr);
+
+       return os;
+
+       }
+
+