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Add some documentation for missing HMAC functions

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This includes the newly added HMAC_CTX_get_md().

Reviewed-by: Tim Hudson <tjh@openssl.org>
This commit is contained in:
Matt Caswell 2016-06-20 09:28:25 +01:00
parent a6211814c4
commit 827d17f021
1 changed files with 32 additions and 7 deletions
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39
doc/crypto/HMAC.pod
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@ -2,7 +2,18 @@
=head1 NAME =head1 NAME
HMAC, HMAC_CTX_new, HMAC_CTX_reset, HMAC_CTX_free, HMAC_Init, HMAC_Init_ex, HMAC_Update, HMAC_Final - HMAC message authentication code HMAC,
HMAC_CTX_new,
HMAC_CTX_reset,
HMAC_CTX_free,
HMAC_Init,
HMAC_Init_ex,
HMAC_Update,
HMAC_Final,
HMAC_CTX_copy,
HMAC_CTX_set_flags,
HMAC_CTX_get_md
- HMAC message authentication code
=head1 SYNOPSIS =head1 SYNOPSIS
@ -22,6 +33,10 @@ HMAC, HMAC_CTX_new, HMAC_CTX_reset, HMAC_CTX_free, HMAC_Init, HMAC_Init_ex, HMAC
void HMAC_CTX_free(HMAC_CTX *ctx); void HMAC_CTX_free(HMAC_CTX *ctx);
int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx);
void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx);
Deprecated: Deprecated:
#if OPENSSL_API_COMPAT < 0x10100000L #if OPENSSL_API_COMPAT < 0x10100000L
@ -78,6 +93,14 @@ be authenticated (B<len> bytes at B<data>).
HMAC_Final() places the message authentication code in B<md>, which HMAC_Final() places the message authentication code in B<md>, which
must have space for the hash function output. must have space for the hash function output.
HMAC_CTX_copy() copies all of the internal state from B<sctx> into B<dctx>.
HMAC_CTX_set_flags() applies the specified flags to the internal EVP_MD_CTXs.
These flags have the same meaning as for L<EVP_MD_CTX_set_flags(3)>.
HMAC_CTX_get_md() returns the EVP_MD that has previously been set for the
supplied HMAC_CTX.
=head1 RETURN VALUES =head1 RETURN VALUES
HMAC() returns a pointer to the message authentication code or NULL if HMAC() returns a pointer to the message authentication code or NULL if
@ -86,10 +109,11 @@ an error occurred.
HMAC_CTX_new() returns a pointer to a new B<HMAC_CTX> on success or HMAC_CTX_new() returns a pointer to a new B<HMAC_CTX> on success or
B<NULL> if an error occurred. B<NULL> if an error occurred.
HMAC_CTX_reset(), HMAC_Init_ex(), HMAC_Update() and HMAC_Final() return 1 HMAC_CTX_reset(), HMAC_Init_ex(), HMAC_Update(), HMAC_Final() and
for success or 0 if an error occurred. HMAC_CTX_copy() return 1 for success or 0 if an error occurred.
HMAC_CTX_free() do not return values. HMAC_CTX_get_md() return the EVP_MD previously set for the supplied HMAC_CTX or
NULL if no EVP_MD has been set.
=head1 CONFORMING TO =head1 CONFORMING TO
@ -101,11 +125,12 @@ L<sha(3)>, L<evp(3)>
=head1 HISTORY =head1 HISTORY
HMAC_CTX_init() was replaced with HMAC_CTX_reset() in OpenSSL versions 1.1. HMAC_CTX_init() was replaced with HMAC_CTX_reset() in OpenSSL versions 1.1.0.
HMAC_CTX_cleanup() existed in OpenSSL versions before 1.1. HMAC_CTX_cleanup() existed in OpenSSL versions before 1.1.0.
HMAC_CTX_new() and HMAC_CTX_free() are new in OpenSSL version 1.1. HMAC_CTX_new(), HMAC_CTX_free() and HMAC_CTX_get_md() are new in OpenSSL version
1.1.0.
HMAC_Init_ex(), HMAC_Update() and HMAC_Final() did not return values in HMAC_Init_ex(), HMAC_Update() and HMAC_Final() did not return values in
versions of OpenSSL before 1.0.0. versions of OpenSSL before 1.0.0.