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215 lines
7.8 KiB
C
215 lines
7.8 KiB
C
/* Copyright (c) 2014, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#ifndef OPENSSL_HEADER_PKCS7_H
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#define OPENSSL_HEADER_PKCS7_H
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#include <openssl/base.h>
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#include <openssl/stack.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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// PKCS#7.
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//
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// This library contains functions for extracting information from PKCS#7
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// structures (RFC 2315).
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DECLARE_STACK_OF(CRYPTO_BUFFER)
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DECLARE_STACK_OF(X509)
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DECLARE_STACK_OF(X509_CRL)
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// PKCS7_get_raw_certificates parses a PKCS#7, SignedData structure from |cbs|
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// and appends the included certificates to |out_certs|. It returns one on
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// success and zero on error. |cbs| is advanced passed the structure.
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//
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// Note that a SignedData structure may contain no certificates, in which case
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// this function succeeds but does not append any certificates.
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OPENSSL_EXPORT int PKCS7_get_raw_certificates(
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STACK_OF(CRYPTO_BUFFER) *out_certs, CBS *cbs, CRYPTO_BUFFER_POOL *pool);
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// PKCS7_get_certificates behaves like |PKCS7_get_raw_certificates| but parses
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// them into |X509| objects.
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OPENSSL_EXPORT int PKCS7_get_certificates(STACK_OF(X509) *out_certs, CBS *cbs);
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// PKCS7_bundle_certificates appends a PKCS#7, SignedData structure containing
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// |certs| to |out|. It returns one on success and zero on error.
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OPENSSL_EXPORT int PKCS7_bundle_certificates(
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CBB *out, const STACK_OF(X509) *certs);
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// PKCS7_get_CRLs parses a PKCS#7, SignedData structure from |cbs| and appends
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// the included CRLs to |out_crls|. It returns one on success and zero on error.
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// |cbs| is advanced passed the structure.
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//
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// Note that a SignedData structure may contain no CRLs, in which case this
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// function succeeds but does not append any CRLs.
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OPENSSL_EXPORT int PKCS7_get_CRLs(STACK_OF(X509_CRL) *out_crls, CBS *cbs);
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// PKCS7_bundle_CRLs appends a PKCS#7, SignedData structure containing
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// |crls| to |out|. It returns one on success and zero on error.
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OPENSSL_EXPORT int PKCS7_bundle_CRLs(CBB *out, const STACK_OF(X509_CRL) *crls);
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// PKCS7_get_PEM_certificates reads a PEM-encoded, PKCS#7, SignedData structure
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// from |pem_bio| and appends the included certificates to |out_certs|. It
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// returns one on success and zero on error.
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//
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// Note that a SignedData structure may contain no certificates, in which case
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// this function succeeds but does not append any certificates.
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OPENSSL_EXPORT int PKCS7_get_PEM_certificates(STACK_OF(X509) *out_certs,
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BIO *pem_bio);
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// PKCS7_get_PEM_CRLs reads a PEM-encoded, PKCS#7, SignedData structure from
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// |pem_bio| and appends the included CRLs to |out_crls|. It returns one on
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// success and zero on error.
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//
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// Note that a SignedData structure may contain no CRLs, in which case this
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// function succeeds but does not append any CRLs.
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OPENSSL_EXPORT int PKCS7_get_PEM_CRLs(STACK_OF(X509_CRL) *out_crls,
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BIO *pem_bio);
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// Deprecated functions.
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//
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// These functions are a compatibility layer over a subset of OpenSSL's PKCS#7
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// API. It intentionally does not implement the whole thing, only the minimum
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// needed to build cryptography.io.
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typedef struct {
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STACK_OF(X509) *cert;
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STACK_OF(X509_CRL) *crl;
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} PKCS7_SIGNED;
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typedef struct {
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STACK_OF(X509) *cert;
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STACK_OF(X509_CRL) *crl;
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} PKCS7_SIGN_ENVELOPE;
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typedef void PKCS7_ENVELOPE;
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typedef void PKCS7_DIGEST;
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typedef void PKCS7_ENCRYPT;
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typedef struct {
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uint8_t *ber_bytes;
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size_t ber_len;
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// Unlike OpenSSL, the following fields are immutable. They filled in when the
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// object is parsed and ignored in serialization.
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ASN1_OBJECT *type;
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union {
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char *ptr;
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ASN1_OCTET_STRING *data;
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PKCS7_SIGNED *sign;
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PKCS7_ENVELOPE *enveloped;
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PKCS7_SIGN_ENVELOPE *signed_and_enveloped;
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PKCS7_DIGEST *digest;
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PKCS7_ENCRYPT *encrypted;
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ASN1_TYPE *other;
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} d;
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} PKCS7;
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// d2i_PKCS7 parses a BER-encoded, PKCS#7 signed data ContentInfo structure from
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// |len| bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the
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// result is in |*out|. Note that, even if |*out| is already non-NULL on entry,
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// it will not be written to. Rather, a fresh |PKCS7| is allocated and the
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// previous one is freed. On successful exit, |*inp| is advanced past the BER
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// structure. It returns the result or NULL on error.
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OPENSSL_EXPORT PKCS7 *d2i_PKCS7(PKCS7 **out, const uint8_t **inp,
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size_t len);
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// d2i_PKCS7_bio behaves like |d2i_PKCS7| but reads the input from |bio|. If
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// the length of the object is indefinite the full contents of |bio| are read.
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//
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// If the function fails then some unknown amount of data may have been read
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// from |bio|.
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OPENSSL_EXPORT PKCS7 *d2i_PKCS7_bio(BIO *bio, PKCS7 **out);
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// i2d_PKCS7 is a dummy function which copies the contents of |p7|. If |out| is
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// not NULL then the result is written to |*out| and |*out| is advanced just
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// past the output. It returns the number of bytes in the result, whether
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// written or not, or a negative value on error.
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OPENSSL_EXPORT int i2d_PKCS7(const PKCS7 *p7, uint8_t **out);
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// i2d_PKCS7_bio writes |p7| to |bio|. It returns one on success and zero on
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// error.
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OPENSSL_EXPORT int i2d_PKCS7_bio(BIO *bio, const PKCS7 *p7);
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// PKCS7_free releases memory associated with |p7|.
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OPENSSL_EXPORT void PKCS7_free(PKCS7 *p7);
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// PKCS7_type_is_data returns zero.
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OPENSSL_EXPORT int PKCS7_type_is_data(const PKCS7 *p7);
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// PKCS7_type_is_digest returns zero.
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OPENSSL_EXPORT int PKCS7_type_is_digest(const PKCS7 *p7);
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// PKCS7_type_is_encrypted returns zero.
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OPENSSL_EXPORT int PKCS7_type_is_encrypted(const PKCS7 *p7);
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// PKCS7_type_is_enveloped returns zero.
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OPENSSL_EXPORT int PKCS7_type_is_enveloped(const PKCS7 *p7);
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// PKCS7_type_is_signed returns one. (We only supporte signed data
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// ContentInfos.)
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OPENSSL_EXPORT int PKCS7_type_is_signed(const PKCS7 *p7);
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// PKCS7_type_is_signedAndEnveloped returns zero.
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OPENSSL_EXPORT int PKCS7_type_is_signedAndEnveloped(const PKCS7 *p7);
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// PKCS7_DETACHED indicates that the PKCS#7 file specifies its data externally.
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#define PKCS7_DETACHED 0x40
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// The following flags cause |PKCS7_sign| to fail.
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#define PKCS7_TEXT 0x1
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#define PKCS7_NOCERTS 0x2
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#define PKCS7_NOSIGS 0x4
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#define PKCS7_NOCHAIN 0x8
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#define PKCS7_NOINTERN 0x10
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#define PKCS7_NOVERIFY 0x20
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#define PKCS7_BINARY 0x80
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#define PKCS7_NOATTR 0x100
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#define PKCS7_NOSMIMECAP 0x200
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#define PKCS7_STREAM 0x1000
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// PKCS7_sign assembles |certs| into a PKCS#7 signed data ContentInfo with
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// external data and no signatures. It returns a newly-allocated |PKCS7| on
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// success or NULL on error. |sign_cert| and |pkey| must be NULL. |data| is
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// ignored. |flags| must be equal to |PKCS7_DETACHED|.
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//
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// Note this function only implements a subset of the corresponding OpenSSL
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// function. It is provided for backwards compatibility only.
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OPENSSL_EXPORT PKCS7 *PKCS7_sign(X509 *sign_cert, EVP_PKEY *pkey,
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STACK_OF(X509) *certs, BIO *data, int flags);
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#if defined(__cplusplus)
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} // extern C
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extern "C++" {
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BSSL_NAMESPACE_BEGIN
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BORINGSSL_MAKE_DELETER(PKCS7, PKCS7_free)
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BSSL_NAMESPACE_END
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} // extern C++
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#endif
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#define PKCS7_R_BAD_PKCS7_VERSION 100
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#define PKCS7_R_NOT_PKCS7_SIGNED_DATA 101
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#define PKCS7_R_NO_CERTIFICATES_INCLUDED 102
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#define PKCS7_R_NO_CRLS_INCLUDED 103
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#endif // OPENSSL_HEADER_PKCS7_H
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