68 lines
2.0 KiB
Plaintext
68 lines
2.0 KiB
Plaintext
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=pod
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=head1 NAME
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RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures
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=head1 SYNOPSIS
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#include <openssl/rsa.h>
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int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
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unsigned int m_len, unsigned char *sigret,
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unsigned int *siglen, RSA *rsa);
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int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
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unsigned int m_len, unsigned char *sigbuf,
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unsigned int siglen, RSA *rsa);
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=head1 DESCRIPTION
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RSA_sign_ASN1_OCTET_STRING() signs the octet string B<m> of size
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B<m_len> using the private key B<rsa> represented in DER using PKCS #1
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padding. It stores the signature in B<sigret> and the signature size
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in B<siglen>. B<sigret> must point to B<RSA_size(rsa)> bytes of
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memory.
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B<dummy> is ignored.
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The random number generator must be seeded when calling
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RSA_sign_ASN1_OCTET_STRING().
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If the automatic seeding or reseeding of the OpenSSL CSPRNG fails due to
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external circumstances (see L<RAND(7)>), the operation will fail.
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RSA_verify_ASN1_OCTET_STRING() verifies that the signature B<sigbuf>
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of size B<siglen> is the DER representation of a given octet string
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B<m> of size B<m_len>. B<dummy> is ignored. B<rsa> is the signer's
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public key.
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=head1 RETURN VALUES
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RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise.
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RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0
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otherwise.
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The error codes can be obtained by L<ERR_get_error(3)>.
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=head1 BUGS
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These functions serve no recognizable purpose.
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=head1 SEE ALSO
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L<ERR_get_error(3)>,
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L<RAND_bytes(3)>, L<RSA_sign(3)>,
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L<RSA_verify(3)>,
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L<RAND(7)>
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=head1 COPYRIGHT
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Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the OpenSSL license (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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