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GmSSL/include/gmssl/cms.h
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Zhi Guan 7af9f951a2 Update v3 API
2022-02-27 18:41:04 +08:00

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/*
* Copyright (c) 2021 - 2021 The GmSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the GmSSL Project.
* (http://gmssl.org/)"
*
* 4. The name "GmSSL Project" must not be used to endorse or promote
* products derived from this software without prior written
* permission. For written permission, please contact
* guanzhi1980@gmail.com.
*
* 5. Products derived from this software may not be called "GmSSL"
* nor may "GmSSL" appear in their names without prior written
* permission of the GmSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the GmSSL Project
* (http://gmssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
References:
1. GM/T 0010-2012 SM2 Cryptography Message Syntax Specification
2. RFC 2315 PKCS #7 Cryptographic Message Syntax Version 1.5
3. RFC 5652 Cryptographic Message Syntax (CMS)
*/
#ifndef GMSSL_CMS_H
#define GMSSL_CMS_H
#include <string.h>
#include <stdint.h>
#include <sys/types.h>
#include <gmssl/x509.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
ContentType:
OID_cms_data
OID_cms_signed_data
OID_cms_enveloped_data
OID_cms_signed_and_enveloped_data
OID_cms_encrypted_data
OID_cms_key_agreement_info
*/
const char *cms_content_type_name(int oid);
int cms_content_type_from_name(const char *name);
int cms_content_type_to_der(int oid, uint8_t **out, size_t *outlen);
int cms_content_type_from_der(int *oid, const uint8_t **in, size_t *inlen);
/*
ContentInfo ::= SEQUENCE {
contentType OBJECT IDENTIFIER,
content [0] EXPLICIT ANY OPTIONAL }
*/
int cms_content_info_to_der(
int content_type,
const uint8_t *content, size_t content_len,
uint8_t **out, size_t *outlen);
int cms_content_info_from_der(
int *content_type,
const uint8_t **content, size_t *content_len, // 这里获得的是完整的TLV
const uint8_t **in, size_t *inlen);
int cms_content_info_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
/*
Data ::= OCTET STRING
*/
#define cms_data_to_der(d,dlen,out,outlen) asn1_octet_string_to_der(d,dlen,out,outlen)
#define cms_data_from_der(d,dlen,in,inlen) asn1_octet_string_from_der(d,dlen,in,inlen)
#define cms_data_print(fp,fmt,ind,label,d,dlen) format_bytes(fp,fmt,ind,label,d,dlen)
/*
EncryptedContentInfo ::= SEQUENCE {
contentType OBJECT IDENTIFIER,
contentEncryptionAlgorithm AlgorithmIdentifier,
encryptedContent [0] IMPLICIT OCTET STRING OPTIONAL,
sharedInfo1 [1] IMPLICIT OCTET STRING OPTIONAL,
sharedInfo2 [2] IMPLICIT OCTET STRING OPTIONAL }
*/
int cms_enced_content_info_to_der(
int content_type,
int enc_algor, const uint8_t *enc_iv, size_t enc_iv_len,
const uint8_t *enced_content, size_t enced_content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
uint8_t **out, size_t *outlen);
int cms_enced_content_info_from_der(
int *content_type,
int *enc_algor, const uint8_t **enc_iv, size_t *enc_iv_len,
const uint8_t **enced_content, size_t *enced_content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t **in, size_t *inlen);
int cms_enced_content_info_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
int cms_enced_content_info_encrypt_to_der(
int content_type,
int enc_algor, const uint8_t *iv, size_t ivlen,
const uint8_t *content, size_t content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
const uint8_t *key, size_t keylen,
uint8_t **out, size_t *outlen);
int cms_enced_content_info_decrypt_from_der(
int *content_type,
int *enc_algor, const uint8_t **iv, size_t *ivlen,
uint8_t *content, size_t *content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t *key, size_t keylen,
const uint8_t **in, size_t *inlen);
/*
EncryptedData ::= SEQUENCE {
version INTEGER (1),
encryptedContentInfo EncryptedContentInfo }
*/
int cms_encrypted_data_to_der(
int version,
int content_type,
int enc_algor, const uint8_t *iv, size_t ivlen,
const uint8_t *enced_content, size_t enced_content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
uint8_t **out, size_t *outlen);
int cms_encrypted_data_from_der(
int *version,
int *content_type,
int *enc_algor, const uint8_t **iv, size_t *ivlen,
const uint8_t **enced_content, size_t *enced_content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t **in, size_t *inlen);
int cms_encrypted_data_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
int cms_encrypted_data_encrypt_to_der(
int content_type,
int enc_algor, const uint8_t *iv, size_t ivlen,
const uint8_t *content, size_t content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
const uint8_t *key, size_t keylen,
uint8_t **out, size_t *outlen);
int cms_encrypted_data_decrypt_from_der(
int *content_type,
int *enc_algor, const uint8_t **iv, size_t *ivlen,
uint8_t *content, size_t *content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t *key, size_t keylen,
const uint8_t **in, size_t *inlen);
/*
IssuerAndSerialNumber ::= SEQUENCE {
isser Name,
serialNumber INTEGER }
*/
int cms_issuer_and_serial_number_to_der(
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
uint8_t **out, size_t *outlen);
int cms_issuer_and_serial_number_from_der(
const uint8_t **issuer, size_t *issuer_len,
const uint8_t **serial_number, size_t *serial_number_len,
const uint8_t **in, size_t *inlen);
int cms_issuer_and_serial_number_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
/*
SignerInfo ::= SEQUENCE {
version INTEGER (1),
issuerAndSerialNumber IssuerAndSerialNumber,
digestAlgorithm AlgorithmIdentifier,
authenticatedAttributes [0] IMPLICIT SET OF Attribute OPTINOAL,
digestEncryptionAlgorithm AlgorithmIdentifier,
encryptedDigest OCTET STRING,
unauthenticatedAttributes [1] IMPLICIT SET OF Attribute OPTINOAL, }
*/
int cms_signer_info_to_der(
int version,
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
int digest_algor,
const uint8_t *authed_attrs, size_t authed_attrs_len,
int signature_algor,
const uint8_t *enced_digest, size_t enced_digest_len,
const uint8_t *unauthed_attrs, size_t unauthed_attrs_len,
uint8_t **out, size_t *outlen);
int cms_signer_info_from_der(
int *version,
const uint8_t **issuer, size_t *issuer_len,
const uint8_t **serial_number, size_t *serial_number_len,
int *digest_algor,
const uint8_t **authed_attrs, size_t *authed_attrs_len,
int *signature_algor,
const uint8_t **enced_digest, size_t *enced_digest_len,
const uint8_t **unauthed_attrs, size_t *unauthed_attrs_len,
const uint8_t **in, size_t *inlen);
int cms_signer_info_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
int cms_signer_info_sign_to_der(
int version,
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
const uint8_t *authed_attrs, size_t authed_attrs_len,
const uint8_t *unauthed_attrs, size_t unauthed_attrs_len,
const SM3_CTX *sm3_ctx,
const SM2_KEY *sign_key, const char *signer_id, size_t signer_id_len,
uint8_t **out, size_t *outlen);
int cms_signer_info_verify_from_der(
int *version,
const uint8_t **issuer, size_t *issuer_len,
const uint8_t **serial_number, size_t *serial_number_len,
int *digest_algor,
const uint8_t **authed_attrs, size_t *authed_attrs_len,
int *signature_algor,
const uint8_t **enced_digest, size_t *enced_digest_len,
const uint8_t **unauthed_attrs, size_t *unauthed_attrs_len,
const uint8_t *certs, size_t certslen,
const uint8_t **in, size_t *inlen);
/*
SignerInfos ::= SET OF SignerInfo;
*/
int cms_signer_infos_add_signer_info(
uint8_t *d, size_t *dlen, size_t maxlen,
int version,
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
const uint8_t *authed_attrs, size_t authed_attrs_len,
const uint8_t *unauthed_attrs, size_t unauthed_attrs_len,
const SM3_CTX *sm3_ctx,
const SM2_KEY *sign_key, const char *signer_id, size_t signer_id_len);
#define cms_signer_infos_to_der(d,dlen,out,outlen) asn1_set_to_der(d,dlen,out,outlen)
#define cms_signer_infos_from_der(d,dlen,in,inlen) asn1_set_from_der(d,dlen,in,inlen)
int cms_signer_infos_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
/*
CertificateRevocationLists ::= SET OF CertificateRevocationList
*/
int cms_crls_add_crl(uint8_t *d, size_t *dlen, size_t maxlen, const uint8_t *crl, size_t crllen);
#define cms_crls_to_der(d,dlen,out,outlen) asn1_set_to_der(d,dlen,out,outlen)
#define cms_crls_from_der(d,dlen,in,inlen) asn1_set_from_der(d,dlen,in,inlen)
int cms_crls_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
/*
ExtendedCertificateAndCertificate ::= CHOICE {
certificate Certificate,
extendedCertificate [0] IMPLICIT ExtendedCertificate }
ExtendedCertificatesAndCertificates ::= SET OF
ExtendedCertificateOrCertificate
ExtendedCertificate is supported in print, not in add/to/from
*/
int cms_extened_certs_add_cert(uint8_t *d, size_t *dlen, size_t maxlen, const uint8_t *cert, size_t certlen);
#define cms_extened_certs_to_der(d,dlen,out,outlen) asn1_set_to_der(d,dlen,out,outlen)
#define cms_extened_certs_from_der(d,dlen,in,inlen) asn1_set_from_der(d,dlen,in,inlen)
int cms_extended_certs_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
/*
SignedData ::= SEQUENCE {
version INTEGER (1),
digestAlgorithms SET OF AlgorithmIdentifier,
contentInfo ContentInfo,
certificates [0] IMPLICIT SET OF Certificate OPTIONAL,
crls [1] IMPLICIT SET OF CertificateRevocationList OPTIONAL,
signerInfos SET OF SignerInfo }
*/
int cms_signed_data_to_der(
int version,
const int *digest_algors, const size_t digest_algors_cnt,
const int content_type, const uint8_t *content, const size_t content_len,
const uint8_t *certs, size_t certs_len,
const uint8_t *crls, const size_t crls_lens,
const uint8_t *signer_infos, size_t signer_infos_lens,
uint8_t **out, size_t *outlen);
int cms_signed_data_from_der(
int *version,
const uint8_t *digest_algors, size_t *digest_algors_count, size_t max_digest_algors,
int *content_type, const uint8_t **content, size_t *content_len,
const uint8_t **certs, size_t *certs_len,
const uint8_t **crls, size_t *crls_len,
const uint8_t **signer_infos, size_t *signer_infos_len,
const uint8_t **in, size_t *inlen);
int cms_signed_data_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
typedef struct {
uint8_t *certs;
size_t certs_len;
SM2_KEY *sm2_key;
char *signer_id;
size_t signer_id_len;
} CMS_CERT_AND_KEY;
int cms_signed_data_sign_to_der(
int version,
int content_type, const uint8_t *content, size_t content_len,
const CMS_CERT_AND_KEY *signers, size_t signers_cnt,
const uint8_t *crls, size_t crls_len,
uint8_t **out, size_t *outlen);
int cms_signed_data_verify_from_der(
int *version,
const uint8_t *digest_algors, size_t *digest_algors_cnt, size_t max_digest_algors,
int *content_type, const uint8_t **content, size_t *content_len,
const uint8_t **certs, size_t *certs_len,
const uint8_t **crls, size_t *crls_len,
const uint8_t **signer_infos, size_t *signer_infos_len,
const uint8_t *extra_certs, size_t extra_certs_len,
const uint8_t *extra_crls, size_t extra_crls_len,
const uint8_t **in, size_t *inlen);
/*
RecipientInfo ::= SEQUENCE {
version INTEGER (1),
issuerAndSerialNumber IssuerAndSerialNumber,
keyEncryptionAlgorithm AlgorithmIdentifier,
encryptedKey OCTET STRING -- DER-encoding of SM2Cipher
}
*/
int cms_recipient_info_to_der(
int version,
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
int public_key_enc_algor,
const uint8_t *enced_key, size_t enced_key_len,
uint8_t **out, size_t *outlen);
int cms_recipient_info_from_der(
int *version,
const uint8_t **issuer, size_t *issuer_len,
const uint8_t **serial_number, size_t *serial_number_len,
int *pke_algor, const uint8_t **params, size_t *paramslen,// SM2加密只使用SM3，没有默认参数，但是ECIES可能有
const uint8_t **enced_key, size_t *enced_key_len,
const uint8_t **in, size_t *inlen);
int cms_recipient_info_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
int cms_recipient_info_encrypt_to_der(
int version,
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
int public_key_enc_algor,
const uint8_t *in, size_t inlen,
const SM2_KEY *public_key,
uint8_t **out, size_t *outlen);
int cms_recipient_info_decrypt_from_der(
int *version,
const uint8_t **issuer, size_t *issuer_len,
const uint8_t **serial_number, size_t *serial_number_len,
int *pke_algor, const uint8_t **params, size_t *paramslen,
const uint8_t **decrypted_key, size_t *decrypted_key_len,
const SM2_KEY *sm2_key,
const uint8_t **in, size_t *inlen);
/*
EnvelopedData ::= SEQUENCE {
version Version,
recipientInfos SET OF RecipientInfo,
encryptedContentInfo EncryptedContentInfo }
*/
int cms_enveloped_data_to_der(
int version,
const uint8_t *rcpt_infos, size_t rcpt_infos_len,
int content_type,
int enc_algor, const uint8_t *enc_iv, size_t enc_iv_len,
const uint8_t *enced_content, size_t enced_content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
const uint8_t **out, size_t *outlen);
int cms_enveloped_data_from_der(
int *version,
const uint8_t **rcpt_infos, size_t *rcpt_infos_len,
int *content_type,
int *enc_algor, const uint8_t **enc_iv, size_t *enc_iv_len,
const uint8_t **enced_content, size_t *enced_content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t **in, size_t *inlen);
int cms_enveloped_data_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
int cms_enveloped_data_encrypt_to_der(
int version,
const uint8_t *rcpt_certs, size_t rcpt_certs_len, // 当只有一个接收者的时候，这个参数类型非常方便
int enc_algor, const uint8_t *key, size_t keylen, const uint8_t *iv, size_t ivlen,
int content_type, const uint8_t *content, size_t content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
uint8_t **out, size_t *outlen);
int cms_enveloped_data_decrypt_from_der(
int *version,
const uint8_t **rcpt_infos, size_t *rcpt_infos_len,
int *content_type, uint8_t *content, size_t *content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const SM2_KEY *sm2_key,
const uint8_t *issuer, size_t issuer_len,
const uint8_t *serial_number, size_t serial_number_len,
const uint8_t **in, size_t *inlen);
/*
SignedAndEnvelopedData ::= SEQUENCE {
version INTEGER (1),
recipientInfos SET OF RecipientInfo,
digestAlgorithms SET OF AlgorithmIdentifier,
encryptedContentInfo EncryptedContentInfo,
certificates [0] IMPLICIT SET OF Certificate OPTIONAL,
crls [1] IMPLICIT SET OF CertificateRevocationList OPTIONAL,
signerInfos SET OF SignerInfo }
*/
int cms_signed_and_enveloped_data_to_der(
int version,
const uint8_t *rcpt_infos, size_t rcpt_infos_len,
const int *digest_algors, size_t digest_algors_count,
int content_type,
int enc_algor, const uint8_t *iv, size_t ivlen,
const uint8_t *enced_content, size_t enced_content_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
const uint8_t *certs, size_t certs_len,
const uint8_t *crls, size_t crls_len,
const uint8_t *signer_infos, size_t signer_infos_len);
int cms_signed_and_enveloped_data_from_der(
int *version,
const uint8_t **rcpt_infos, size_t *rcpt_infos_len,
const uint8_t **digest_algors, size_t *digest_algors_len,
int *content_type,
int *enc_algor, const uint8_t **enc_iv, size_t *enc_iv_len,
const uint8_t **enced_content, size_t *enced_content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t **certs, size_t *certs_len,
const uint8_t **crls, size_t *crls_len,
const uint8_t **signer_infos, size_t *signer_infos_len,
const uint8_t **in, size_t *inlen);
int cms_signed_and_enveloped_data_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
int cms_signed_and_enveloped_encipher_to_der(
const CMS_CERT_AND_KEY *signers, size_t signers_cnt,
const uint8_t *rcpt_certs, size_t rcpt_certs_len,
int content_type, const uint8_t *content, size_t content_len,
const uint8_t *signer_crls, size_t signer_crls_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
uint8_t **out, size_t *outlen);
int cms_deenvelop_and_verify_decipher_from_der(
int *version,
const uint8_t **rcpt_infos, size_t *rcpt_infos_len,
const uint8_t **digest_algors, size_t *digest_algors_len,
int *enc_algor, uint8_t *key, size_t *keylen, const uint8_t **iv, size_t *ivlen,
int *content_type, uint8_t *content, size_t *content_len,
const uint8_t **enced_content, size_t *enced_content_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len,
const uint8_t **certs, size_t *certs_len,
const uint8_t **crls, size_t *crls_len,
const uint8_t **signer_infos, size_t *signer_infos_len,
const SM2_KEY *rcpt_key,
const uint8_t *rcpt_issuer, size_t rcpt_issuer_len,
const uint8_t *rcpt_serial_number, size_t rcpt_serial_number_len,
const uint8_t *extra_verify_certs, size_t extra_verify_certs_len,
const uint8_t *extra_verify_crls, size_t extra_verify_crls_len,
const uint8_t **in, size_t *inlen);
/*
KeyAgreementInfo ::= SEQUENCE {
version INTEGER (1),
tempPublicKeyR SM2PublicKey,
userCertificate Certificate,
userID OCTET STRING }
*/
int cms_key_agreement_info_to_der(
int version,
const SM2_KEY *temp_public_key_r,
const uint8_t *user_cert, size_t user_cert_len,
const uint8_t *user_id, size_t user_id_len,
uint8_t **out, size_t *outlen);
int cms_key_agreement_info_from_der(
int *version,
SM2_KEY *temp_public_key_r,
const uint8_t **user_cert, size_t *user_cert_len,
const uint8_t **user_id, size_t *user_id_len,
const uint8_t **in, size_t *inlen);
int cms_key_agreement_info_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
// 下面是公开API
// 生成ContentInfo, type == data
int cms_set_data(uint8_t *cms, size_t *cms_len, const uint8_t *d, size_t dlen);
int cms_encrypt(
int enc_algor, const uint8_t *key, size_t keylen, const uint8_t *iv, size_t ivlen, // 对称加密算法、密钥和IV
int content_type, const uint8_t *content, size_t content_len, // 待加密的输入数据
const uint8_t *shared_info1, size_t shared_info1_len, // 附加信息
const uint8_t *shared_info2, size_t shared_info2_len, // 附加信息
uint8_t *cms, size_t *cms_len); // 输出的ContentInfo (type encryptedData)
int cms_decrypt(
const uint8_t *key, size_t keylen, // 解密密钥（我们不知道解密算法）
const uint8_t *cms, size_t cms_len, // 输入的ContentInfo (type encryptedData)
const uint8_t *extra_enced_content, size_t extra_enced_content_len, // EncryptedContentInfo的密文数据为空时显示提供输入密文
int *content_type, uint8_t *content, size_t *content_len, // 输出的解密数据类型及数据
int *enc_algor, const uint8_t **iv, size_t *ivlen, // 解析EncryptedContentInfo得到的对称加密算法及参数
const uint8_t **shared_info1, size_t *shared_info1_len, // 附加信息
const uint8_t **shared_info2, size_t *shared_info2_len);
int cms_sign(
const CMS_CERT_AND_KEY *signers, size_t signers_cnt, // 签名者的签名私钥和证书
int content_type, const uint8_t *content, size_t content_len, // 待签名的输入数据
const uint8_t *crls, size_t crls_len, // 签名者证书的CRL
uint8_t *cms, size_t *cms_len); // 输出的ContentInfo (type signedData)
int cms_verify(
const uint8_t *cms, size_t cms_len, // 输入的ContentInfo (type signedData)
const uint8_t *extra_content, size_t extra_content_len, // ContentInfo的数据为空时显示提供输入
const uint8_t *extra_certs, size_t extra_certs_len, // 当SignedData中未提供证书时显示输入
const uint8_t *extra_crls, size_t extra_crls_len, // 当SignedData中未提供CRL时显示输入
int *content_type, const uint8_t **content, size_t *content_len, // 从SignedData解析得到的被签名数据
const uint8_t **certs, size_t *certs_len, // 从SignedData解析得到的签名证书
const uint8_t **crls, size_t *crls_len, // 从SignedData解析得到的CRL
const uint8_t **signer_infos, size_t *signer_infos_len); // 从SignedData解析得到的SignerInfos，可用于显示验证结果
int cms_envelop(
const uint8_t *rcpt_certs, size_t rcpt_certs_len, // 接收方证书，注意这个参数的类型可以容纳多个证书，但是只有在一个接受者时对调用方最方便
int enc_algor, const uint8_t *key, size_t keylen, const uint8_t *iv, size_t ivlen, // 对称加密算法及参数
int content_type, const uint8_t *content, size_t content_len, // 待加密的输入数据
const uint8_t *shared_info1, size_t shared_info1_len, // 附加输入信息
const uint8_t *shared_info2, size_t shared_info2_len, // 附加输入信息
uint8_t *cms, size_t *cms_len); // 输出ContentInfo
int cms_deenvelop(
const SM2_KEY *rcpt_key, const uint8_t *rcpt_cert, size_t rcpt_cert_len, // 接收方的解密私钥和对应的证书，注意只需要一个解密方
const uint8_t *cms, size_t cms_len,
const uint8_t *extra_enced_content, size_t extra_enced_content_len, // 显式输入的密文
int *content_type, uint8_t *content, size_t *content_len,
int *enc_algor, const uint8_t **iv, size_t *ivlen, // 注意，对称加密的密钥就不输出了
const uint8_t **rcpt_infos, size_t *rcpt_infos_len, // 解析得到，用于显示
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len);
int cms_sign_and_envelop( // 参考cms_sign, cms_envelop
const CMS_CERT_AND_KEY *signers, size_t signers_cnt,
const uint8_t *rcpt_certs, size_t rcpt_certs_len,
int enc_algor, const uint8_t *key, size_t keylen, const uint8_t *iv, size_t ivlen,
int content_type, const uint8_t *content, size_t content_len,
const uint8_t *signer_crls, size_t signer_crls_len,
const uint8_t *shared_info1, size_t shared_info1_len,
const uint8_t *shared_info2, size_t shared_info2_len,
uint8_t *cms, size_t *cms_len);
int cms_deenvelop_and_verify( // 参考cms_deenvelop, cms_verify
const SM2_KEY *rcpt_key, const uint8_t *rcpt_cert, size_t rcpt_cert_len,
// 输入
const uint8_t *cms, size_t cms_len,
const uint8_t *extra_enced_content, size_t extra_enced_content_len,
const uint8_t *extra_signer_certs, size_t extra_signer_certs_len,
const uint8_t *extra_signer_crls, size_t extra_signer_crls_len,
// 输出
int *content_type, uint8_t *content, size_t *content_len,
// 格外的解析内容输出，均为可选
int *enc_algor, const uint8_t **iv, size_t *ivlen,
const uint8_t **rcpt_infos, size_t rcpt_infos_len,
const uint8_t **signer_infos, size_t *signer_infos_len,
const uint8_t **signer_certs, size_t *signer_certs_len,
const uint8_t **signer_crls, size_t *signer_crls_len,
const uint8_t **shared_info1, size_t *shared_info1_len,
const uint8_t **shared_info2, size_t *shared_info2_len);
// 生成ContentInfo, type == keyAgreementInfo
int cms_set_key_agreement_info(
uint8_t *cms, size_t *cms_len,
const SM2_KEY *temp_public_key_r,
const uint8_t *user_cert, size_t user_cert_len,
const uint8_t *user_id, size_t user_id_len);
int cms_print(FILE *fp, int fmt, int ind, const uint8_t *a, size_t alen);
#ifdef __cplusplus
}
#endif
#endif
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