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Remove output buffer limitation for PSA with GCM.

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The requirement of minimum 15 bytes for output buffer in
psa_aead_finish() and psa_aead_verify() does not apply
to the built-in implementation of the GCM.

Alternative implementations are expected to verify the
length of the provided output buffers and to return
the MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL in case the
buffer length is too small.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
This commit is contained in:
Mateusz Starzyk 2021-09-30 16:39:07 +02:00
parent cd51e76583
commit f28261fc14
5 changed files with 16 additions and 4 deletions
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2
include/mbedtls/gcm.h
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@ -45,6 +45,8 @@
#define MBEDTLS_ERR_GCM_AUTH_FAILED -0x0012
/** Bad input parameters to function. */
#define MBEDTLS_ERR_GCM_BAD_INPUT -0x0014
/** An output buffer is too small. */
#define MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL -0x0018
#ifdef __cplusplus
extern "C" {