Because the operation identity wasn't integrated with the created
methods, the following code would give unexpected results:
EVP_MD *md = EVP_MD_fetch(NULL, "MD5", NULL);
EVP_CIPHER *cipher = EVP_CIPHER_fetch(NULL, "MD5", NULL);
if (md != NULL)
printf("MD5 is a digest\n");
if (cipher != NULL)
printf("MD5 is a cipher\n");
The message is that MD5 is both a digest and a cipher.
Partially fixes#9106
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9109)
Now that the legacy NID isn't used as a main index for fetched
algorithms, the legacy NID was just transported around unnecessarily.
This is removed, and the legacy NID is simply set by EVP_{API}_fetch()
after the construction process is done.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8878)
We didn't deal very well with names that didn't have pre-defined NIDs,
as the NID zero travelled through the full process and resulted in an
inaccessible method. By consequence, we need to refactor the method
construction callbacks to rely more on algorithm names.
We must, however, still store the legacy NID with the method, for the
sake of other code that depend on it (for example, CMS).
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8878)
OSSL_provider_init() gets another output parameter, holding a pointer
to a provider side context. It's entirely up to the provider to
define the context and what it's being used for. This pointer is
passed back to other provider functions, typically the provider global
get_params and set_params functions, and also the diverse algorithm
context creators, and of course, the teardown function.
With this, a provider can be instantiated more than once, or be
re-loaded as the case may be, while maintaining instance state.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8848)
When we attempt to fetch a method with a given NID we will ask the
providers for it if we don't already know about it. During that process
we may be told about other methods with a different NID. We need to
make sure we don't confuse the two.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8541)
To ensure that old applications aren't left without any provider, and
at the same time not forcing any default provider on applications that
know how to deal with them, we device the concept of fallback
providers, which are automatically activated if no other provider is
already activated.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8480)
This is an interface between Core dispatch table fetching and
EVP_{method}_fetch(). All that's needed from the diverse method
fetchers are the functions to create a method structure from a
dispatch table, a function that ups the method reference counter and a
function to free the method (in case of failure).
This routine is internal to the EVP API andis therefore only made
accessible within crypto/evp, by including evp_locl.h
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8341)
Fully assume that the method constructors use reference counting.
Otherwise, we may leak memory, or loose track and do a double free.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8341)
This queries the provider for its available functionality (unless a
matching method structured is already cached, in which case that's
used instead), and creates method structure with the help of a passed
constructor. The result is cached if the provider allows it (or if
caching is forced).
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8340)
This should never reduce the range covered and might increase it on some
platforms.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8415)
The NAME section format is comma separated names to the left of the
left of the dash, free form on the right. If we don't follow that
form, programs like apropos(1) and whatis(1) can't do their job
properly.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8267)
- Add a bit more text about that is expected of the user or
OSSL_METHOD_STOREs.
- Clarify what a method and what a numeric identity are.
- Change all mentions of 'implementation' and 'result' to 'method'.
To clarify further: OpenSSL has used the term 'method' for structures
that mainly contains function pointers. Those are the methods that
are expected to be stored away in OSSL_METHOD_STOREs. In the end,
however, it's the caller's responsibility to define exactly what they
want to store, as long as its 'methods' are associated with a numeric
identity and properties.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8265)
Properties are a sequence of comma separated name=value pairs. A name
without a corresponding value is assumed to be a Boolean and have the
true value 'yes'. Values are either strings or numbers. Strings can be
quoted either _"_ or _'_ or unquoted (with restrictions). There are no
escape characters inside strings. Number are either decimal digits or
'0x' followed by hexidecimal digits. Numbers are represented internally
as signed sixty four bit values.
Queries on properties are a sequence comma separated conditional tests.
These take the form of name=value (equality test), name!=value (inequality
test) or name (Boolean test for truth). Queries can be parsed, compared
against a definition or merged pairwise.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8224)
The context builds on CRYPTO_EX_DATA, allowing it to be dynamically
extended with new data from the different parts of libcrypto.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8225)
Iterators over the sparse array structures have gained an initial argument
which indicates the index into the array of the element. This can be used,
e.g., to delete or modify the associated value.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8229)
This commit adds a space and time efficient sparse array data structure.
The structure's raw API is wrapped by inline functions which provide type
safety.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/8197)
