DSA_do_sign(3) OpenSSL DSA_do_sign(3)NAME
DSA_do_sign, DSA_do_verify - raw DSA signature operations
LIBRARY
libcrypto, -lcrypto
SYNOPSIS
#include <openssl/dsa.h>
DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
int DSA_do_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa);
DESCRIPTION
DSA_do_sign() computes a digital signature on the len byte message digest dgst using the private key dsa and returns it in a newly
allocated DSA_SIG structure.
DSA_sign_setup(3) may be used to precompute part of the signing operation in case signature generation is time-critical.
DSA_do_verify() verifies that the signature sig matches a given message digest dgst of size len. dsa is the signer's public key.
RETURN VALUES
DSA_do_sign() returns the signature, NULL on error. DSA_do_verify() returns 1 for a valid signature, 0 for an incorrect signature and -1
on error. The error codes can be obtained by ERR_get_error(3).
SEE ALSO openssl_dsa(3), ERR_get_error(3), openssl_rand(3), DSA_SIG_new(3), DSA_sign(3)HISTORY
DSA_do_sign() and DSA_do_verify() were added in OpenSSL 0.9.3.
1.0.1i 2009-07-20 DSA_do_sign(3)
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DSA_do_sign(3) OpenSSL DSA_do_sign(3)NAME
DSA_do_sign, DSA_do_verify - raw DSA signature operations
SYNOPSIS
#include <openssl/dsa.h>
DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
int DSA_do_verify(const unsigned char *dgst, int dgst_len,
DSA_SIG *sig, DSA *dsa);
DESCRIPTION
DSA_do_sign() computes a digital signature on the len byte message digest dgst using the private key dsa and returns it in a newly allo-
cated DSA_SIG structure.
DSA_sign_setup(3) may be used to precompute part of the signing operation in case signature generation is time-critical.
DSA_do_verify() verifies that the signature sig matches a given message digest dgst of size len. dsa is the signer's public key.
RETURN VALUES
DSA_do_sign() returns the signature, NULL on error. DSA_do_verify() returns 1 for a valid signature, 0 for an incorrect signature and -1
on error. The error codes can be obtained by ERR_get_error(3).
SEE ALSO dsa(3), ERR_get_error(3), rand(3), DSA_SIG_new(3), DSA_sign(3)HISTORY
DSA_do_sign() and DSA_do_verify() were added in OpenSSL 0.9.3.
0.9.7a 2002-09-25 DSA_do_sign(3)
I have been asked to look into implementing digital signatures with emails sent from our Solaris servers to users. The emails would be sent from "application" accounts on the servers to users in the Windows world (exchange).
The only info I could find was a high level blurb (read by a CIO)... (1 Reply)
Yesterday customers of "OP5 monitor" (a commercial Nagios variant) were hit by a sudden GUI malfunction,
error "License signature is invalid: /etc/op5license/op5license.lic".
Two hours later the OP5 company provided a download of fix packages. (1 Reply)
I saw this and am wondering how I can add a signature so it shows on my posts.
Thanks.
Visible Post Elements You have the option to show or hide various elements of messages, which may be of use to users on slow internet... (1 Reply)