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Fix documentation for mbedtls_gcm_finish()

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Fix implementation and documentation missmatch for the function
arguments to mbedtls_gcm_finish(). Also, removed redundant if condition
that always evaluates to true.
This commit is contained in:
Andres AG 2016-09-26 10:09:30 +01:00 committed by Simon Butcher
parent 9af0280aa5
commit 314d8a8400
3 changed files with 5 additions and 4 deletions
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2
ChangeLog
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@ -45,6 +45,8 @@ Bugfix
* Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
data structure until after error checks are successful. Found by data structure until after error checks are successful. Found by
subramanyam-c. subramanyam-c.
* Fix documentation and implementation missmatch for function arguments of
mbedtls_gcm_finish(). Found by cmiatpaar.
Changes Changes
* Extended test coverage of special cases, and added new timing test suite. * Extended test coverage of special cases, and added new timing test suite.

4
include/mbedtls/gcm.h
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@ -190,8 +190,8 @@ int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
* 16 bytes. * 16 bytes.
* *
* \param ctx GCM context * \param ctx GCM context
* \param tag buffer for holding the tag (may be NULL if tag_len is 0) * \param tag buffer for holding the tag
* \param tag_len length of the tag to generate * \param tag_len length of the tag to generate (must be at least 4)
* *
* \return 0 if successful or MBEDTLS_ERR_GCM_BAD_INPUT * \return 0 if successful or MBEDTLS_ERR_GCM_BAD_INPUT
*/ */

1
library/gcm.c
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@ -415,7 +415,6 @@ int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
if( tag_len > 16 || tag_len < 4 ) if( tag_len > 16 || tag_len < 4 )
return( MBEDTLS_ERR_GCM_BAD_INPUT ); return( MBEDTLS_ERR_GCM_BAD_INPUT );
if( tag_len != 0 )
memcpy( tag, ctx->base_ectr, tag_len ); memcpy( tag, ctx->base_ectr, tag_len );
if( orig_len || orig_add_len ) if( orig_len || orig_add_len )