1RSA_SIGN_ASN1_OCTET_STRING(3)       OpenSSL      RSA_SIGN_ASN1_OCTET_STRING(3)
2
3
4

NAME

6       RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA
7       signatures
8

SYNOPSIS

10        #include <openssl/rsa.h>
11
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);
15
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);
19

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.
25
26       dummy is ignored.
27
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.
32
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.
36

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.
41
42       The error codes can be obtained by ERR_get_error(3).
43

BUGS

45       These functions serve no recognizable purpose.
46

SEE ALSO

48       ERR_get_error(3), RAND_bytes(3), RSA_sign(3), RSA_verify(3), RAND(7)
49

51       Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
52
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>.
57
58
59
601.1.1i                            2021-07-22     RSA_SIGN_ASN1_OCTET_STRING(3)
Impressum