1=pod 2 3=head1 NAME 4 5RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures 6 7=head1 SYNOPSIS 8 9 #include <openssl/rsa.h> 10 11The following functions have been deprecated since OpenSSL 3.0, and can be 12hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value, 13see L<openssl_user_macros(7)>: 14 15 int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m, 16 unsigned int m_len, unsigned char *sigret, 17 unsigned int *siglen, RSA *rsa); 18 19 int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m, 20 unsigned int m_len, unsigned char *sigbuf, 21 unsigned int siglen, RSA *rsa); 22 23=head1 DESCRIPTION 24 25All of the functions described on this page are deprecated. 26Applications should instead use EVP PKEY APIs. 27 28RSA_sign_ASN1_OCTET_STRING() signs the octet string B<m> of size 29B<m_len> using the private key B<rsa> represented in DER using PKCS #1 30padding. It stores the signature in B<sigret> and the signature size 31in B<siglen>. B<sigret> must point to B<RSA_size(rsa)> bytes of 32memory. 33 34B<dummy> is ignored. 35 36The random number generator must be seeded when calling 37RSA_sign_ASN1_OCTET_STRING(). 38If the automatic seeding or reseeding of the OpenSSL CSPRNG fails due to 39external circumstances (see L<RAND(7)>), the operation will fail. 40 41RSA_verify_ASN1_OCTET_STRING() verifies that the signature B<sigbuf> 42of size B<siglen> is the DER representation of a given octet string 43B<m> of size B<m_len>. B<dummy> is ignored. B<rsa> is the signer's 44public key. 45 46=head1 RETURN VALUES 47 48RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise. 49RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0 50otherwise. 51 52The error codes can be obtained by L<ERR_get_error(3)>. 53 54=head1 BUGS 55 56These functions serve no recognizable purpose. 57 58=head1 SEE ALSO 59 60L<ERR_get_error(3)>, 61L<RAND_bytes(3)>, L<RSA_sign(3)>, 62L<RSA_verify(3)>, 63L<RAND(7)> 64 65=head1 HISTORY 66 67All of these functions were deprecated in OpenSSL 3.0. 68 69=head1 COPYRIGHT 70 71Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved. 72 73Licensed under the Apache License 2.0 (the "License"). You may not use 74this file except in compliance with the License. You can obtain a copy 75in the file LICENSE in the source distribution or at 76L<https://www.openssl.org/source/license.html>. 77 78=cut 79