Pkcs7 ctors

crypto/CMakeLists.txt

@@ -469,6 +469,7 @@ add_library(
   pem/pem_x509.c
   pem/pem_xaux.c
   pkcs7/pkcs7.c
+  pkcs7/pkcs7_asn1.c
   pkcs7/pkcs7_x509.c
   pkcs8/pkcs8.c
   pkcs8/pkcs8_x509.c

crypto/pkcs7/internal.h

@@ -21,6 +21,55 @@
 extern "C" {
 #endif
 
+struct pkcs7_issuer_and_serial_st {
+    X509_NAME *issuer;
+    ASN1_INTEGER *serial;
+};
+
+struct pkcs7_signer_info_st {
+    ASN1_INTEGER *version;
+    PKCS7_ISSUER_AND_SERIAL *issuer_and_serial;
+    X509_ALGOR *digest_alg;
+    STACK_OF(X509_ATTRIBUTE) *auth_attr;
+    X509_ALGOR *digest_enc_alg;
+    ASN1_OCTET_STRING *enc_digest;
+    STACK_OF(X509_ATTRIBUTE) *unauth_attr;
+    EVP_PKEY *pkey;
+};
+
+struct pkcs7_recip_info_st {
+    ASN1_INTEGER *version;
+    PKCS7_ISSUER_AND_SERIAL *issuer_and_serial;
+    X509_ALGOR *key_enc_algor;
+    ASN1_OCTET_STRING *enc_key;
+    X509 *cert;
+};
+
+struct pkcs7_enc_content_st {
+    ASN1_OBJECT *content_type;
+    X509_ALGOR *algorithm;
+    ASN1_OCTET_STRING *enc_data;
+    const EVP_CIPHER *cipher;
+};
+
+struct pkcs7_envelope_st {
+  ASN1_INTEGER *version;
+  PKCS7_ENC_CONTENT *enc_data;
+  STACK_OF(PKCS7_RECIP_INFO) *recipientinfo;
+};
+
+struct pkcs7_digest_st {
+    ASN1_INTEGER *version;
+    X509_ALGOR *digest_alg;
+    PKCS7 *contents;
+    ASN1_OCTET_STRING *digest;
+    const EVP_MD *md;
+};
+
+struct pkcs7_encrypt_st {
+    ASN1_INTEGER *version;
+    PKCS7_ENC_CONTENT *enc_data;
+};
 
 // pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
 // SignedData blob from |cbs| and sets |*out| to point to the rest of the