From 2e3fadbf730fd0d13c891d5e555af3e7f39ca3f4 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:40:19 +0100 Subject: PKCS#7: Implement a parser [RFC 2315] Implement a parser for a PKCS#7 signed-data message as described in part of RFC 2315. Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- crypto/asymmetric_keys/pkcs7_parser.h | 61 +++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 crypto/asymmetric_keys/pkcs7_parser.h (limited to 'crypto/asymmetric_keys/pkcs7_parser.h') diff --git a/crypto/asymmetric_keys/pkcs7_parser.h b/crypto/asymmetric_keys/pkcs7_parser.h new file mode 100644 index 000000000000..d25f4d15370f --- /dev/null +++ b/crypto/asymmetric_keys/pkcs7_parser.h @@ -0,0 +1,61 @@ +/* PKCS#7 crypto data parser internal definitions + * + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#include +#include +#include "x509_parser.h" + +#define kenter(FMT, ...) \ + pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__) +#define kleave(FMT, ...) \ + pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__) + +struct pkcs7_signed_info { + struct pkcs7_signed_info *next; + struct x509_certificate *signer; /* Signing certificate (in msg->certs) */ + unsigned index; + bool trusted; + + /* Message digest - the digest of the Content Data (or NULL) */ + const void *msgdigest; + unsigned msgdigest_len; + + /* Authenticated Attribute data (or NULL) */ + unsigned authattrs_len; + const void *authattrs; + + /* Issuing cert serial number and issuer's name */ + const void *raw_serial; + unsigned raw_serial_size; + unsigned raw_issuer_size; + const void *raw_issuer; + + /* Message signature. + * + * This contains the generated digest of _either_ the Content Data or + * the Authenticated Attributes [RFC2315 9.3]. If the latter, one of + * the attributes contains the digest of the the Content Data within + * it. + */ + struct public_key_signature sig; +}; + +struct pkcs7_message { + struct x509_certificate *certs; /* Certificate list */ + struct x509_certificate *crl; /* Revocation list */ + struct pkcs7_signed_info *signed_infos; + + /* Content Data (or NULL) */ + enum OID data_type; /* Type of Data */ + size_t data_len; /* Length of Data */ + size_t data_hdrlen; /* Length of Data ASN.1 header */ + const void *data; /* Content Data (or 0) */ +}; -- cgit v1.2.3