Automatically generated by Pod::Man 4.14 (Pod::Simple 3.42)

Standard preamble:
========================================================================
..

..

.. 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++. Capital omega is used to do unbreakable dashes and
therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
nothing in troff, for use with C<>.
.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.

If the F register is >0, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
entries marked with X<> in POD. Of course, you'll have to process the
output yourself in some meaningful fashion.

Avoid warning from groff about undefined register 'F'.
.. .nr rF 0 . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} ========================================================================

Title "OSSL_SELF_TEST_NEW 3ossl" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
OSSL_SELF_TEST_new, OSSL_SELF_TEST_free, OSSL_SELF_TEST_onbegin, OSSL_SELF_TEST_oncorrupt_byte, OSSL_SELF_TEST_onend - functionality to trigger a callback during a self test Header "SYNOPSIS" .Vb 1 #include <openssl/self_test.h> \& OSSL_SELF_TEST *OSSL_SELF_TEST_new(OSSL_CALLBACK *cb, void *cbarg); void OSSL_SELF_TEST_free(OSSL_SELF_TEST *st); \& void OSSL_SELF_TEST_onbegin(OSSL_SELF_TEST *st, const char *type, const char *desc); int OSSL_SELF_TEST_oncorrupt_byte(OSSL_SELF_TEST *st, unsigned char *bytes); void OSSL_SELF_TEST_onend(OSSL_SELF_TEST *st, int ret); .Ve Header "DESCRIPTION" These methods are intended for use by provider implementers, to display diagnostic information during self testing.

\fBOSSL_SELF_TEST_new() allocates an opaque \s-1OSSL_SELF_TEST\s0 object that has a callback and callback argument associated with it.

The callback cb may be triggered multiple times by a self test to indicate different phases.

\fBOSSL_SELF_TEST_free() frees the space allocated by OSSL_SELF_TEST_new().

\fBOSSL_SELF_TEST_onbegin() may be inserted at the start of a block of self test code. It can be used for diagnostic purposes. If this method is called the callback cb will receive the following \s-1OSSL_PARAM\s0\|(3) object. Item "st-phase (OSSL_PROV_PARAM_SELF_TEST_PHASE) <UTF8 string>" The value is the string \*(L"Start\*(R"

\fBOSSL_SELF_TEST_oncorrupt_byte() may be inserted just after the known answer is calculated, but before the self test compares the result. The first byte in the passed in array of bytes will be corrupted if the callback returns 0, otherwise it leaves the array unaltered. It can be used for failure testing. The type and desc can be used to identify an individual self test to target for failure testing. If this method is called the callback cb will receive the following \s-1OSSL_PARAM\s0\|(3) object. Item "st-phase (OSSL_PROV_PARAM_SELF_TEST_PHASE) <UTF8 string>" The value is the string \*(L"Corrupt\*(R"

\fBOSSL_SELF_TEST_onend() may be inserted at the end of a block of self test code just before cleanup to indicate if the test passed or failed. It can be used for diagnostic purposes. If this method is called the callback cb will receive the following \s-1OSSL_PARAM\s0\|(3) object. Item "st-phase (OSSL_PROV_PARAM_SELF_TEST_PHASE) <UTF8 string>" The value of the string is \*(L"Pass\*(R" if ret is non zero, otherwise it has the value \*(L"Fail\*(R".

After the callback cb has been called the values that were set by \fBOSSL_SELF_TEST_onbegin() for type and desc are set to the value \*(L"None\*(R".

If OSSL_SELF_TEST_onbegin(), OSSL_SELF_TEST_oncorrupt_byte() or \fBOSSL_SELF_TEST_onend() is called the following additional \s-1OSSL_PARAM\s0\|(3) are passed to the callback. Item "st-type (OSSL_PROV_PARAM_SELF_TEST_TYPE) <UTF8 string>" The value is setup by the type passed to OSSL_SELF_TEST_onbegin(). This allows the callback to identify the type of test being run. Item "st-desc (OSSL_PROV_PARAM_SELF_TEST_DESC) <UTF8 string>" The value is setup by the type passed to OSSL_SELF_TEST_onbegin(). This allows the callback to identify the sub category of the test being run.

Header "RETURN VALUES" \fBOSSL_SELF_TEST_new() returns the allocated \s-1OSSL_SELF_TEST\s0 object, or \s-1NULL\s0 if it fails.

\fBOSSL_SELF_TEST_oncorrupt_byte() returns 1 if corruption occurs, otherwise it returns 0.

Header "EXAMPLES" A single self test could be set up in the following way:

.Vb 8 OSSL_SELF_TEST *st = NULL; OSSL_CALLBACK *cb; void *cbarg; int ok = 0; unsigned char out[EVP_MAX_MD_SIZE]; unsigned int out_len = 0; EVP_MD_CTX *ctx = EVP_MD_CTX_new(); EVP_MD *md = EVP_MD_fetch(libctx, t->algorithm, NULL); \& /* * Retrieve the callback - will be NULL if not set by the application via * OSSL_SELF_TEST_set_callback(). */ OSSL_SELF_TEST_get_callback(libctx, &cb, &cbarg); \& st = OSSL_SELF_TEST_new(cb, cb_arg); \& /* Trigger the optional callback */ OSSL_SELF_TEST_onbegin(st, OSSL_SELF_TEST_TYPE_KAT_DIGEST, OSSL_SELF_TEST_DESC_MD_SHA2); \& if (!EVP_DigestInit_ex(ctx, md, NULL) || !EVP_DigestUpdate(ctx, pt, pt_len) || !EVP_DigestFinal(ctx, out, &out_len)) goto err; \& /* Optional corruption - If the application callback returns 0 */ OSSL_SELF_TEST_oncorrupt_byte(st, out); \& if (out_len != t->expected_len || memcmp(out, t->expected, out_len) != 0) goto err; ok = 1; err: OSSL_SELF_TEST_onend(st, ok); EVP_MD_free(md); EVP_MD_CTX_free(ctx); .Ve

Multiple self test's can be set up in a similar way by repeating the pattern of \fBOSSL_SELF_TEST_onbegin(), OSSL_SELF_TEST_oncorrupt_byte(), OSSL_SELF_TEST_onend() for each test.

Header "SEE ALSO" \fBOSSL_SELF_TEST_set_callback\|(3), \fBopenssl-core.h\|(7), \s-1OSSL_PROVIDER-FIPS\s0\|(7) Header "HISTORY" The functions described here were added in OpenSSL 3.0. Header "COPYRIGHT" Copyright 2020-2023 The OpenSSL Project Authors. All Rights Reserved.

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>.