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| -rw-r--r-- | upstream/debian-bookworm/man7/provider-mac.7ssl | 363 |
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diff --git a/upstream/debian-bookworm/man7/provider-mac.7ssl b/upstream/debian-bookworm/man7/provider-mac.7ssl new file mode 100644 index 00000000..59d8322c --- /dev/null +++ b/upstream/debian-bookworm/man7/provider-mac.7ssl @@ -0,0 +1,363 @@ +.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.43) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +provider\-mac \- The mac library <\-> provider functions +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 2 +\& #include <openssl/core_dispatch.h> +\& #include <openssl/core_names.h> +\& +\& /* +\& * None of these are actual functions, but are displayed like this for +\& * the function signatures for functions that are offered as function +\& * pointers in OSSL_DISPATCH arrays. +\& */ +\& +\& /* Context management */ +\& void *OSSL_FUNC_mac_newctx(void *provctx); +\& void OSSL_FUNC_mac_freectx(void *mctx); +\& void *OSSL_FUNC_mac_dupctx(void *src); +\& +\& /* Encryption/decryption */ +\& int OSSL_FUNC_mac_init(void *mctx, unsigned char *key, size_t keylen, +\& const OSSL_PARAM params[]); +\& int OSSL_FUNC_mac_update(void *mctx, const unsigned char *in, size_t inl); +\& int OSSL_FUNC_mac_final(void *mctx, unsigned char *out, size_t *outl, size_t outsize); +\& +\& /* MAC parameter descriptors */ +\& const OSSL_PARAM *OSSL_FUNC_mac_gettable_params(void *provctx); +\& const OSSL_PARAM *OSSL_FUNC_mac_gettable_ctx_params(void *mctx, void *provctx); +\& const OSSL_PARAM *OSSL_FUNC_mac_settable_ctx_params(void *mctx, void *provctx); +\& +\& /* MAC parameters */ +\& int OSSL_FUNC_mac_get_params(OSSL_PARAM params[]); +\& int OSSL_FUNC_mac_get_ctx_params(void *mctx, OSSL_PARAM params[]); +\& int OSSL_FUNC_mac_set_ctx_params(void *mctx, const OSSL_PARAM params[]); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +This documentation is primarily aimed at provider authors. See \fBprovider\fR\|(7) +for further information. +.PP +The \s-1MAC\s0 operation enables providers to implement mac algorithms and make +them available to applications via the \s-1API\s0 functions \fBEVP_MAC_init\fR\|(3), +\&\fBEVP_MAC_update\fR\|(3) and \fBEVP_MAC_final\fR\|(3). +.PP +All \*(L"functions\*(R" mentioned here are passed as function pointers between +\&\fIlibcrypto\fR and the provider in \s-1\fBOSSL_DISPATCH\s0\fR\|(3) arrays via +\&\s-1\fBOSSL_ALGORITHM\s0\fR\|(3) arrays that are returned by the provider's +\&\fBprovider_query_operation()\fR function +(see \*(L"Provider Functions\*(R" in \fBprovider\-base\fR\|(7)). +.PP +All these \*(L"functions\*(R" have a corresponding function type definition +named \fBOSSL_FUNC_{name}_fn\fR, and a helper function to retrieve the +function pointer from an \s-1\fBOSSL_DISPATCH\s0\fR\|(3) element named +\&\fBOSSL_FUNC_{name}\fR. +For example, the \*(L"function\*(R" \fBOSSL_FUNC_mac_newctx()\fR has these: +.PP +.Vb 3 +\& typedef void *(OSSL_FUNC_mac_newctx_fn)(void *provctx); +\& static ossl_inline OSSL_FUNC_mac_newctx_fn +\& OSSL_FUNC_mac_newctx(const OSSL_DISPATCH *opf); +.Ve +.PP +\&\s-1\fBOSSL_DISPATCH\s0\fR\|(3) arrays are indexed by numbers that are provided as +macros in \fBopenssl\-core_dispatch.h\fR\|(7), as follows: +.PP +.Vb 3 +\& OSSL_FUNC_mac_newctx OSSL_FUNC_MAC_NEWCTX +\& OSSL_FUNC_mac_freectx OSSL_FUNC_MAC_FREECTX +\& OSSL_FUNC_mac_dupctx OSSL_FUNC_MAC_DUPCTX +\& +\& OSSL_FUNC_mac_init OSSL_FUNC_MAC_INIT +\& OSSL_FUNC_mac_update OSSL_FUNC_MAC_UPDATE +\& OSSL_FUNC_mac_final OSSL_FUNC_MAC_FINAL +\& +\& OSSL_FUNC_mac_get_params OSSL_FUNC_MAC_GET_PARAMS +\& OSSL_FUNC_mac_get_ctx_params OSSL_FUNC_MAC_GET_CTX_PARAMS +\& OSSL_FUNC_mac_set_ctx_params OSSL_FUNC_MAC_SET_CTX_PARAMS +\& +\& OSSL_FUNC_mac_gettable_params OSSL_FUNC_MAC_GETTABLE_PARAMS +\& OSSL_FUNC_mac_gettable_ctx_params OSSL_FUNC_MAC_GETTABLE_CTX_PARAMS +\& OSSL_FUNC_mac_settable_ctx_params OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS +.Ve +.PP +A mac algorithm implementation may not implement all of these functions. +In order to be a consistent set of functions, at least the following functions +must be implemented: \fBOSSL_FUNC_mac_newctx()\fR, \fBOSSL_FUNC_mac_freectx()\fR, \fBOSSL_FUNC_mac_init()\fR, +\&\fBOSSL_FUNC_mac_update()\fR, \fBOSSL_FUNC_mac_final()\fR. +All other functions are optional. +.SS "Context Management Functions" +.IX Subsection "Context Management Functions" +\&\fBOSSL_FUNC_mac_newctx()\fR should create and return a pointer to a provider side +structure for holding context information during a mac operation. +A pointer to this context will be passed back in a number of the other mac +operation function calls. +The parameter \fIprovctx\fR is the provider context generated during provider +initialisation (see \fBprovider\fR\|(7)). +.PP +\&\fBOSSL_FUNC_mac_freectx()\fR is passed a pointer to the provider side mac context in +the \fImctx\fR parameter. +If it receives \s-1NULL\s0 as \fImctx\fR value, it should not do anything other than +return. +This function should free any resources associated with that context. +.PP +\&\fBOSSL_FUNC_mac_dupctx()\fR should duplicate the provider side mac context in the +\&\fImctx\fR parameter and return the duplicate copy. +.SS "Encryption/Decryption Functions" +.IX Subsection "Encryption/Decryption Functions" +\&\fBOSSL_FUNC_mac_init()\fR initialises a mac operation given a newly created provider +side mac context in the \fImctx\fR parameter. The \fIparams\fR are set before setting +the \s-1MAC\s0 \fIkey\fR of \fIkeylen\fR bytes. +.PP +\&\fBOSSL_FUNC_mac_update()\fR is called to supply data for \s-1MAC\s0 computation of a previously +initialised mac operation. +The \fImctx\fR parameter contains a pointer to a previously initialised provider +side context. +\&\fBOSSL_FUNC_mac_update()\fR may be called multiple times for a single mac operation. +.PP +\&\fBOSSL_FUNC_mac_final()\fR completes the \s-1MAC\s0 computation started through previous +\&\fBOSSL_FUNC_mac_init()\fR and \fBOSSL_FUNC_mac_update()\fR calls. +The \fImctx\fR parameter contains a pointer to the provider side context. +The resulting \s-1MAC\s0 should be written to \fIout\fR and the amount of data written +to \fI*outl\fR, which should not exceed \fIoutsize\fR bytes. +The same expectations apply to \fIoutsize\fR as documented for +\&\fBEVP_MAC_final\fR\|(3). +.SS "Mac Parameters" +.IX Subsection "Mac Parameters" +See \s-1\fBOSSL_PARAM\s0\fR\|(3) for further details on the parameters structure used by +these functions. +.PP +\&\fBOSSL_FUNC_mac_get_params()\fR gets details of parameter values associated with the +provider algorithm and stores them in \fIparams\fR. +.PP +\&\fBOSSL_FUNC_mac_set_ctx_params()\fR sets mac parameters associated with the given +provider side mac context \fImctx\fR to \fIparams\fR. +Any parameter settings are additional to any that were previously set. +Passing \s-1NULL\s0 for \fIparams\fR should return true. +.PP +\&\fBOSSL_FUNC_mac_get_ctx_params()\fR gets details of currently set parameter values +associated with the given provider side mac context \fImctx\fR and stores them +in \fIparams\fR. +Passing \s-1NULL\s0 for \fIparams\fR should return true. +.PP +\&\fBOSSL_FUNC_mac_gettable_params()\fR, \fBOSSL_FUNC_mac_gettable_ctx_params()\fR, +and \fBOSSL_FUNC_mac_settable_ctx_params()\fR all return constant \s-1\fBOSSL_PARAM\s0\fR\|(3) +arrays as descriptors of the parameters that \fBOSSL_FUNC_mac_get_params()\fR, +\&\fBOSSL_FUNC_mac_get_ctx_params()\fR, and \fBOSSL_FUNC_mac_set_ctx_params()\fR +can handle, respectively. \fBOSSL_FUNC_mac_gettable_ctx_params()\fR and +\&\fBOSSL_FUNC_mac_settable_ctx_params()\fR will return the parameters associated +with the provider side context \fImctx\fR in its current state if it is +not \s-1NULL.\s0 Otherwise, they return the parameters associated with the +provider side algorithm \fIprovctx\fR. +.PP +All \s-1MAC\s0 implementations are expected to handle the following parameters: +.IP "with \fBOSSL_FUNC_set_ctx_params()\fR:" 4 +.IX Item "with OSSL_FUNC_set_ctx_params():" +.RS 4 +.PD 0 +.ie n .IP """key"" (\fB\s-1OSSL_MAC_PARAM_KEY\s0\fR) <octet string>" 4 +.el .IP "``key'' (\fB\s-1OSSL_MAC_PARAM_KEY\s0\fR) <octet string>" 4 +.IX Item "key (OSSL_MAC_PARAM_KEY) <octet string>" +.PD +Sets the key in the associated \s-1MAC\s0 ctx. This is identical to passing a \fIkey\fR +argument to the \fBOSSL_FUNC_mac_init()\fR function. +.RE +.RS 4 +.RE +.IP "with \fBOSSL_FUNC_get_params()\fR:" 4 +.IX Item "with OSSL_FUNC_get_params():" +.RS 4 +.PD 0 +.ie n .IP """size"" (\fB\s-1OSSL_MAC_PARAM_SIZE\s0\fR) <integer>" 4 +.el .IP "``size'' (\fB\s-1OSSL_MAC_PARAM_SIZE\s0\fR) <integer>" 4 +.IX Item "size (OSSL_MAC_PARAM_SIZE) <integer>" +.PD +Can be used to get the default \s-1MAC\s0 size (which might be the only allowable +\&\s-1MAC\s0 size for the implementation). +.Sp +Note that some implementations allow setting the size that the resulting \s-1MAC\s0 +should have as well, see the documentation of the implementation. +.RE +.RS 4 +.ie n .IP """size"" (\fB\s-1OSSL_MAC_PARAM_BLOCK_SIZE\s0\fR) <integer>" 4 +.el .IP "``size'' (\fB\s-1OSSL_MAC_PARAM_BLOCK_SIZE\s0\fR) <integer>" 4 +.IX Item "size (OSSL_MAC_PARAM_BLOCK_SIZE) <integer>" +Can be used to get the \s-1MAC\s0 block size (if supported by the algorithm). +.RE +.RS 4 +.RE +.SH "NOTES" +.IX Header "NOTES" +The \s-1MAC\s0 life-cycle is described in \fBlife_cycle\-rand\fR\|(7). Providers should +ensure that the various transitions listed there are supported. At some point +the \s-1EVP\s0 layer will begin enforcing the listed transitions. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fBOSSL_FUNC_mac_newctx()\fR and \fBOSSL_FUNC_mac_dupctx()\fR should return the newly created +provider side mac context, or \s-1NULL\s0 on failure. +.PP +\&\fBOSSL_FUNC_mac_init()\fR, \fBOSSL_FUNC_mac_update()\fR, \fBOSSL_FUNC_mac_final()\fR, \fBOSSL_FUNC_mac_get_params()\fR, +\&\fBOSSL_FUNC_mac_get_ctx_params()\fR and \fBOSSL_FUNC_mac_set_ctx_params()\fR should return 1 for +success or 0 on error. +.PP +\&\fBOSSL_FUNC_mac_gettable_params()\fR, \fBOSSL_FUNC_mac_gettable_ctx_params()\fR and +\&\fBOSSL_FUNC_mac_settable_ctx_params()\fR should return a constant \s-1\fBOSSL_PARAM\s0\fR\|(3) +array, or \s-1NULL\s0 if none is offered. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBprovider\fR\|(7), +\&\s-1\fBEVP_MAC\-BLAKE2\s0\fR\|(7), \s-1\fBEVP_MAC\-CMAC\s0\fR\|(7), \s-1\fBEVP_MAC\-GMAC\s0\fR\|(7), +\&\s-1\fBEVP_MAC\-HMAC\s0\fR\|(7), \s-1\fBEVP_MAC\-KMAC\s0\fR\|(7), \fBEVP_MAC\-Poly1305\fR\|(7), +\&\fBEVP_MAC\-Siphash\fR\|(7), +\&\fBlife_cycle\-mac\fR\|(7), \s-1\fBEVP_MAC\s0\fR\|(3) +.SH "HISTORY" +.IX Header "HISTORY" +The provider \s-1MAC\s0 interface was introduced in OpenSSL 3.0. +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +Copyright 2019\-2022 The OpenSSL Project Authors. All Rights Reserved. +.PP +Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file \s-1LICENSE\s0 in the source distribution or at +<https://www.openssl.org/source/license.html>. |