NAME

       CMS_EncryptedData_encrypt_ex, CMS_EncryptedData_encrypt - Create CMS EncryptedData

SYNOPSIS

        #include <openssl/cms.h>

        CMS_ContentInfo *CMS_EncryptedData_encrypt_ex(BIO *in,
                                                      const EVP_CIPHER *cipher,
                                                      const unsigned char *key,
                                                      size_t keylen,
                                                      unsigned int flags,
                                                      OSSL_LIB_CTX *ctx,
                                                      const char *propq);

        CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in,
            const EVP_CIPHER *cipher, const unsigned char *key, size_t keylen,
            unsigned int flags);

DESCRIPTION

       CMS_EncryptedData_encrypt_ex() creates a CMS_ContentInfo structure with a type
       NID_pkcs7_encrypted. in is a BIO containing the data to encrypt using cipher and the
       encryption key key of size keylen bytes.  The library context libctx and the property
       query propq are used when retrieving algorithms from providers. flags is a set of optional
       flags.

       The flags field supports the options CMS_DETACHED, CMS_STREAM and CMS_PARTIAL. Internally
       CMS_final() is called unless CMS_STREAM and/or CMS_PARTIAL is specified.

       The algorithm passed in the cipher parameter must support ASN1 encoding of its parameters.

       The CMS_ContentInfo structure can be freed using CMS_ContentInfo_free(3).

       CMS_EncryptedData_encrypt() is similar to CMS_EncryptedData_encrypt_ex() but uses default
       values of NULL for the library context libctx and the property query propq.

RETURN VALUES

       If the allocation fails, CMS_EncryptedData_encrypt_ex() and CMS_EncryptedData_encrypt()
       return NULL and set an error code that can be obtained by ERR_get_error(3). Otherwise they
       return a pointer to the newly allocated structure.

SEE ALSO

       ERR_get_error(3), CMS_final(3), CMS_EncryptedData_decrypt(3)

HISTORY

       The CMS_EncryptedData_encrypt_ex() method was added in OpenSSL 3.0.

COPYRIGHT

       Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use this file except
       in compliance with the License.  You can obtain a copy in the file LICENSE in the source
       distribution or at <https://www.openssl.org/source/license.html>.