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 11 int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m, 12 unsigned int m_len, unsigned char *sigret, 13 unsigned int *siglen, RSA *rsa); 14 15 int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m, 16 unsigned int m_len, unsigned char *sigbuf, 17 unsigned int siglen, RSA *rsa); 18 19=head1 DESCRIPTION 20 21RSA_sign_ASN1_OCTET_STRING() signs the octet string B<m> of size 22B<m_len> using the private key B<rsa> represented in DER using PKCS #1 23padding. It stores the signature in B<sigret> and the signature size 24in B<siglen>. B<sigret> must point to B<RSA_size(rsa)> bytes of 25memory. 26 27B<dummy> is ignored. 28 29The random number generator must be seeded when calling 30RSA_sign_ASN1_OCTET_STRING(). 31If the automatic seeding or reseeding of the OpenSSL CSPRNG fails due to 32external circumstances (see L<RAND(7)>), the operation will fail. 33 34RSA_verify_ASN1_OCTET_STRING() verifies that the signature B<sigbuf> 35of size B<siglen> is the DER representation of a given octet string 36B<m> of size B<m_len>. B<dummy> is ignored. B<rsa> is the signer's 37public key. 38 39=head1 RETURN VALUES 40 41RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise. 42RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0 43otherwise. 44 45The error codes can be obtained by L<ERR_get_error(3)>. 46 47=head1 BUGS 48 49These functions serve no recognizable purpose. 50 51=head1 SEE ALSO 52 53L<ERR_get_error(3)>, 54L<RAND_bytes(3)>, L<RSA_sign(3)>, 55L<RSA_verify(3)>, 56L<RAND(7)> 57 58=head1 COPYRIGHT 59 60Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved. 61 62Licensed under the OpenSSL license (the "License"). You may not use 63this file except in compliance with the License. You can obtain a copy 64in the file LICENSE in the source distribution or at 65L<https://www.openssl.org/source/license.html>. 66 67=cut 68