#include <Digest.h>
Classes | |
| class | P |
Public Member Functions | |
| Digest () | |
| ~Digest () | |
| bool | create (const std::string &name) |
| initialize creation of a new message digest | |
| const std::string & | name () |
| get the name of the current digest algorithm | |
| bool | update (const char *bytes, size_t len) |
| feed data into digest computation algorithm | |
| std::string | digest () |
| get hex string representation of the digest | |
Static Public Member Functions | |
| static std::string | digest (const std::string &name, std::istream &is, size_t bufsize=4096) |
| compute digest of a stream. | |
| static std::string | digest (const std::string &name, const std::string &input, size_t bufsize=4096) |
Well known digest algorithm names. | |
| static const std::string & | md5 () |
| md5 | |
| static const std::string & | sha1 () |
| sha1 | |
| static const std::string & | sha256 () |
| sha256 | |
Private Member Functions | |
| Digest (const Digest &d) | |
| const Digest & | operator= (const Digest &d) |
Private Attributes | |
| P * | _dp |
The computation works by initializing the algorithm using create(). This will construct an internal state. successive calls to update() deliver the data for which the digest is to be computed. After all data has been deliverd, a call to digest() finalizes the computation and returns the result
Definition at line 44 of file Digest.h.
| zypp::Digest::Digest | ( | const Digest & | d | ) | [private] |
| const std::string & zypp::Digest::sha1 | ( | ) | [static] |
| const std::string & zypp::Digest::sha256 | ( | ) | [static] |
| bool zypp::Digest::create | ( | const std::string & | name | ) |
initialize creation of a new message digest
Since openssl is used as backend you may use anything that openssl supports (see man 1 dgst). Common examples are md5 or sha1. sha1 should be preferred when creating digests to verify the authenticity of something.
successive calls to this funcion will destroy the internal state and reinit from scratch
| name | name of the message digest algorithm. |
Definition at line 136 of file Digest.cc.
References _dp, zypp::Digest::P::cleanup(), zypp::Digest::P::initialized, zypp::Digest::P::maybeInit(), and zypp::Digest::P::name.
Referenced by digest().
| const std::string & zypp::Digest::name | ( | ) |
get the name of the current digest algorithm
Definition at line 148 of file Digest.cc.
References _dp, and zypp::Digest::P::name.
| bool zypp::Digest::update | ( | const char * | bytes, | |
| size_t | len | |||
| ) |
feed data into digest computation algorithm
| bytes | ||
| len |
Definition at line 177 of file Digest.cc.
References _dp, zypp::Digest::P::cleanup(), zypp::Digest::P::finalized, zypp::Digest::P::maybeInit(), and zypp::Digest::P::mdctx.
Referenced by digest().
| std::string zypp::Digest::digest | ( | ) |
get hex string representation of the digest
this function will finalize the digest computation. calls to update after this function will start from scratch
Definition at line 153 of file Digest.cc.
References _dp, zypp::Digest::P::finalized, zypp::Digest::P::maybeInit(), zypp::Digest::P::md_len, zypp::Digest::P::md_value, and zypp::Digest::P::mdctx.
Referenced by zypp::filesystem::checksum(), zypp::CheckSum::CheckSum(), digest(), zypp::RepoManager::makeStupidAlias(), and zypp::filesystem::md5sum().
| std::string zypp::Digest::digest | ( | const std::string & | name, | |
| std::istream & | is, | |||
| size_t | bufsize = 4096 | |||
| ) | [static] |
compute digest of a stream.
convenience function
calls create, update and digest in one function. The data for the computation is read from the stream
| name | name of the digest algorithm, |
| is | an input stream to get the data from | |
| bufsize | size of the buffer used for update(). Be careful, this is on the stack. |
| std::string zypp::Digest::digest | ( | const std::string & | name, | |
| const std::string & | input, | |||
| size_t | bufsize = 4096 | |||
| ) | [static] |
P* zypp::Digest::_dp [private] |