int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
- unsigned char *sig, size_t *siglen,
- const unsigned char *tbs, size_t tbslen);
+ unsigned char *sig, size_t *siglen,
+ const unsigned char *tbs, size_t tbslen);
=head1 DESCRIPTION
EVP_PKEY_sign() does not hash the data to be signed, and therefore is
normally used to sign digests. For signing arbitrary messages, see the
-L<EVP_DigestSignInit(3)|EVP_DigestSignInit(3)> and
-L<EVP_SignInit(3)|EVP_SignInit(3)> signing interfaces instead.
+L<EVP_DigestSignInit(3)> and
+L<EVP_SignInit(3)> signing interfaces instead.
After the call to EVP_PKEY_sign_init() algorithm specific control
operations can be performed to set any appropriate parameters for the
-operation (see L<EVP_PKEY_CTX_ctrl(3)|EVP_PKEY_CTX_ctrl(3)>).
+operation (see L<EVP_PKEY_CTX_ctrl(3)>).
The function EVP_PKEY_sign() can be called more than once on the same
context if several operations are performed using the same parameters.
*/
ctx = EVP_PKEY_CTX_new(signing_key, NULL /* no engine */);
if (!ctx)
- /* Error occurred */
+ /* Error occurred */
if (EVP_PKEY_sign_init(ctx) <= 0)
- /* Error */
+ /* Error */
if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_PADDING) <= 0)
- /* Error */
+ /* Error */
if (EVP_PKEY_CTX_set_signature_md(ctx, EVP_sha256()) <= 0)
- /* Error */
+ /* Error */
/* Determine buffer length */
if (EVP_PKEY_sign(ctx, NULL, &siglen, md, mdlen) <= 0)
- /* Error */
+ /* Error */
sig = OPENSSL_malloc(siglen);
if (!sig)
- /* malloc failure */
-
+ /* malloc failure */
+
if (EVP_PKEY_sign(ctx, sig, &siglen, md, mdlen) <= 0)
- /* Error */
+ /* Error */
/* Signature is siglen bytes written to buffer sig */
=head1 SEE ALSO
-L<EVP_PKEY_CTX_new(3)|EVP_PKEY_CTX_new(3)>,
-L<EVP_PKEY_CTX_ctrl(3)|EVP_PKEY_CTX_ctrl(3)>,
-L<EVP_PKEY_encrypt(3)|EVP_PKEY_encrypt(3)>,
-L<EVP_PKEY_decrypt(3)|EVP_PKEY_decrypt(3)>,
-L<EVP_PKEY_verify(3)|EVP_PKEY_verify(3)>,
-L<EVP_PKEY_verify_recover(3)|EVP_PKEY_verify_recover(3)>,
-L<EVP_PKEY_derive(3)|EVP_PKEY_derive(3)>
+L<EVP_PKEY_CTX_new(3)>,
+L<EVP_PKEY_CTX_ctrl(3)>,
+L<EVP_PKEY_encrypt(3)>,
+L<EVP_PKEY_decrypt(3)>,
+L<EVP_PKEY_verify(3)>,
+L<EVP_PKEY_verify_recover(3)>,
+L<EVP_PKEY_derive(3)>
=head1 HISTORY
These functions were first added to OpenSSL 1.0.0.
+=head1 COPYRIGHT
+
+Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License"). You may not use
+this file except in compliance with the License. You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
=cut