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• SSL OP SAFARI ECDHE ECDSA BUG
  ...for OpenSSL ''greater than'' 1.0.1e, ''greater than'' 0.9.8y, 1.0.2, and 1.1.0. For updated versions of OpenSSL, the option is included in <tt>SSL_OP_AL ...then <tt>is_probably_safari</tt> is set in the <tt>SSL*</tt> context. The server will later disable ECDHE-ECDSA ciphers on the context (algorithm types <tt>
  4 KB (589 words) - 02:00, 11 December 2013
• Related Links
  {| class="wikitable sortable" border="1" ...igned to support cross-platform development of security-enabled client and server applications
  7 KB (964 words) - 18:13, 6 July 2015
• Simple TLS Server
  ...L context. This is created using the ''TLS_server_method'' which creates a server that will negotiate the highest version of SSL/TLS supported by the client ...r the communication. In this example, we call ''SSL_accept'' to handle the server side of the TLS handshake, then use ''SSL_write()'' to send our message. Fi
  6 KB (908 words) - 13:16, 8 November 2022
• Diffie Hellman
  ...key g^b mod p. She is not able to calculate the value b from Bob's public key as this is a hard mathematical problem (known as the discrete lo ...communication knows p, g, Alice's public key (g^a mod p) and Bob's public key (g^b mod p). She is unable to calculate the shared sec
  9 KB (1,422 words) - 14:34, 13 February 2021
• Hostname validation
  ...he code is beginning to see widespread testing as the release of OpenSSL 1.1.0 approaches. ...te. Versions prior to 1.0.2 did not perform hostname validation. Version 1.0.2 and up contain support for hostname validation, but they still require
  11 KB (1,531 words) - 19:15, 28 April 2018
• Elliptic Curve Diffie Hellman
  ...ow to derive a shared secret. The details of how to obtain the other party's key (the peer key) are omitted, as this is specific to your particular situ if(1 != EVP_PKEY_paramgen_init(pctx)) handleErrors();
  10 KB (1,677 words) - 12:25, 10 March 2014
• FIPS mode and TLS
  This page discusses the use of FIPS with OpenSSL 1.0.x. It is NOT relevant to the FIPS provider in OpenSSL 3.0 or above. This discussion assumes use of a "FIPS capable" OpenSSL 1.0.1f or later.
  21 KB (3,420 words) - 08:32, 2 February 2024
• List of SSL OP Flags
  ! Option Name !! Description !! 1.0.2 value !! 1.1.0 value !! 1.1.1 value !! 3.0 value ...he application. || Not defined || Not defined || Not defined || SSL_OP_BIT(1)
  12 KB (1,789 words) - 20:51, 5 August 2021
• SSL MODE SEND FALLBACK SCSV
  ...use defects in the down level protocols to carry out other attacks. Table 1 below lists some of the losses that could occur when traversing down protoc {| class="wikitable" border="1"
  7 KB (1,114 words) - 22:59, 17 October 2014
• SSL/TLS Client
  ...from <tt>www.random.org</tt>. The code uses TLS (not SSL) and utilizes the Server Name Indication (SNI) extension from [http://tools.ietf.org/rfc/rfc3546.txt ...</tt> in the <tt>apps/</tt> directory of the OpenSSL distribution. OpenSSL's <tt>s_client</tt> implements nearly every client side feature available fro
  24 KB (3,955 words) - 15:33, 12 December 2022
• Diffie-Hellman parameters
  ...http://www.mail-archive.com/openssl-users@openssl.org/msg71878.html at the server] or the PFS cipher suites will be silently ignored. ...in the server's certificate. If you use a 2048-bit RSA prime in the server's certificate, then use a 2048-bit Diffie-Hellman group for key agreement.
  13 KB (2,037 words) - 20:55, 12 May 2021
• Elliptic Curve Cryptography
  ...have identity elements. So, for example 0 and 1 where: a + 0 = a, and a * 1 = a ...lar (or clock) arithmetic. So, if p=7 then the elements of the set are {0, 1, 2, 3, 4, 5, 6} and:
  18 KB (3,074 words) - 02:26, 29 July 2019
• Library Initialization
  ..., then you would use <tt>SSL_library_init</tt>. If you are using OpenSSL 1.1.0 or above, then the library will initialize itself automatically. Optional ...this page discusses initializing the library in 1.0.2. If you are using 1.1.0 or above then you don't need to take any further steps.
  16 KB (2,713 words) - 14:30, 16 October 2020
• Random Numbers
  ...References]</sup>. The extra steps could include ''Hedging'' on a headless server or embedded device, and ''Finger Painting'' on a mobile device. For recent ...is at most 38%. Some estimates have shown English characters provide only 1 bit/byte (or 12%). Other sources used as a random stream will have differen
  27 KB (4,265 words) - 02:33, 27 July 2019
• Command Line Utilities
  ...ed with most if not all [https://www.perl.org/ Perl] distributions, and it's capable of displaying documentation information in a variety of formats, on As mentioned above, the <tt>version</tt> command's help menu may be queried for additional options like so:
  35 KB (5,360 words) - 11:56, 24 June 2022