1RSA_SIGN_ASN1_OCTET_STRING(3)       OpenSSL      RSA_SIGN_ASN1_OCTET_STRING(3)
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NAME

6       RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA
7       signatures
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SYNOPSIS

10        #include <openssl/rsa.h>
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12        int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
13                                       unsigned int m_len, unsigned char *sigret,
14                                       unsigned int *siglen, RSA *rsa);
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16        int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
17                                         unsigned int m_len, unsigned char *sigbuf,
18                                         unsigned int siglen, RSA *rsa);
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DESCRIPTION

21       RSA_sign_ASN1_OCTET_STRING() signs the octet string m of size m_len
22       using the private key rsa represented in DER using PKCS #1 padding. It
23       stores the signature in sigret and the signature size in siglen. sigret
24       must point to RSA_size(rsa) bytes of memory.
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26       dummy is ignored.
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28       The random number generator must be seeded when calling
29       RSA_sign_ASN1_OCTET_STRING().  If the automatic seeding or reseeding of
30       the OpenSSL CSPRNG fails due to external circumstances (see RAND(7)),
31       the operation will fail.
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33       RSA_verify_ASN1_OCTET_STRING() verifies that the signature sigbuf of
34       size siglen is the DER representation of a given octet string m of size
35       m_len. dummy is ignored. rsa is the signer's public key.
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RETURN VALUES

38       RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise.
39       RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0
40       otherwise.
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42       The error codes can be obtained by ERR_get_error(3).
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BUGS

45       These functions serve no recognizable purpose.
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SEE ALSO

48       ERR_get_error(3), RAND_bytes(3), RSA_sign(3), RSA_verify(3), RAND(7)
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51       Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
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53       Licensed under the OpenSSL license (the "License").  You may not use
54       this file except in compliance with the License.  You can obtain a copy
55       in the file LICENSE in the source distribution or at
56       <https://www.openssl.org/source/license.html>.
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601.1.1q                            2022-07-07     RSA_SIGN_ASN1_OCTET_STRING(3)
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