05-31-2016
OK, not getting it, so I will try and ask in a different way.
First, which octet changes in a an IP subnet range, the network octet or the host octet ?
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LEARN ABOUT CENTOS
rsa_sign_asn1_octet_string
RSA_sign_ASN1_OCTET_STRING(3) OpenSSL RSA_sign_ASN1_OCTET_STRING(3)
NAME
RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures
SYNOPSIS
#include <openssl/rsa.h>
int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
unsigned int m_len, unsigned char *sigret, unsigned int *siglen,
RSA *rsa);
int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
unsigned int m_len, unsigned char *sigbuf, unsigned int siglen,
RSA *rsa);
DESCRIPTION
RSA_sign_ASN1_OCTET_STRING() signs the octet string m of size m_len using the private key rsa represented in DER using PKCS #1 padding. It
stores the signature in sigret and the signature size in siglen. sigret must point to RSA_size(rsa) bytes of memory.
dummy is ignored.
The random number generator must be seeded prior to calling RSA_sign_ASN1_OCTET_STRING().
RSA_verify_ASN1_OCTET_STRING() verifies that the signature sigbuf of size siglen is the DER representation of a given octet string m of
size m_len. dummy is ignored. rsa is the signer's public key.
RETURN VALUES
RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise. RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0
otherwise.
The error codes can be obtained by ERR_get_error(3).
BUGS
These functions serve no recognizable purpose.
SEE ALSO
ERR_get_error(3), objects(3), rand(3), rsa(3), RSA_sign(3), RSA_verify(3)
HISTORY
RSA_sign_ASN1_OCTET_STRING() and RSA_verify_ASN1_OCTET_STRING() were added in SSLeay 0.8.
1.0.1e 2013-02-11 RSA_sign_ASN1_OCTET_STRING(3)