1=pod 2 3=head1 NAME 4 5CMS_EncryptedData_encrypt_ex, CMS_EncryptedData_encrypt 6- Create CMS EncryptedData 7 8=head1 SYNOPSIS 9 10 #include <openssl/cms.h> 11 12 CMS_ContentInfo *CMS_EncryptedData_encrypt_ex(BIO *in, 13 const EVP_CIPHER *cipher, 14 const unsigned char *key, 15 size_t keylen, 16 unsigned int flags, 17 OSSL_LIB_CTX *ctx, 18 const char *propq); 19 20 CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in, 21 const EVP_CIPHER *cipher, const unsigned char *key, size_t keylen, 22 unsigned int flags); 23 24=head1 DESCRIPTION 25 26CMS_EncryptedData_encrypt_ex() creates a B<CMS_ContentInfo> structure 27with a type B<NID_pkcs7_encrypted>. I<in> is a BIO containing the data to 28encrypt using I<cipher> and the encryption key I<key> of size I<keylen> bytes. 29The library context I<libctx> and the property query I<propq> are used when 30retrieving algorithms from providers. I<flags> is a set of optional flags. 31 32The I<flags> field supports the options B<CMS_DETACHED>, B<CMS_STREAM> and 33B<CMS_PARTIAL>. Internally CMS_final() is called unless B<CMS_STREAM> and/or 34B<CMS_PARTIAL> is specified. 35 36The algorithm passed in the I<cipher> parameter must support ASN1 encoding of 37its parameters. 38 39The B<CMS_ContentInfo> structure can be freed using L<CMS_ContentInfo_free(3)>. 40 41CMS_EncryptedData_encrypt() is similar to CMS_EncryptedData_encrypt_ex() 42but uses default values of NULL for the library context I<libctx> and the 43property query I<propq>. 44 45=head1 RETURN VALUES 46 47If the allocation fails, CMS_EncryptedData_encrypt_ex() and 48CMS_EncryptedData_encrypt() return NULL and set an error code that can be 49obtained by L<ERR_get_error(3)>. Otherwise they return a pointer to the newly 50allocated structure. 51 52=head1 SEE ALSO 53 54L<ERR_get_error(3)>, L<CMS_final(3)>, L<CMS_EncryptedData_decrypt(3)> 55 56=head1 HISTORY 57 58The CMS_EncryptedData_encrypt_ex() method was added in OpenSSL 3.0. 59 60=head1 COPYRIGHT 61 62Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. 63 64Licensed under the Apache License 2.0 (the "License"). You may not use 65this file except in compliance with the License. You can obtain a copy 66in the file LICENSE in the source distribution or at 67L<https://www.openssl.org/source/license.html>. 68 69=cut 70