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Allow alternate implementation of GCM

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Provide the ability to use an alternative implementation of GCM in place
of the library-provided implementation.
This commit is contained in:
Jaeden Amero
2017-09-21 12:53:48 +01:00
parent 72ea31b026
commit 1526330931
5 changed files with 29 additions and 0 deletions
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4
library/gcm.c
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@ -54,6 +54,8 @@
#endif /* MBEDTLS_PLATFORM_C */
#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
#if !defined(MBEDTLS_GCM_ALT)
/*
* 32-bit integer manipulation macros (big endian)
*/
@ -508,6 +510,8 @@ void mbedtls_gcm_free( mbedtls_gcm_context *ctx )
mbedtls_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
}
#endif /* !MBEDTLS_GCM_ALT */
#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
/*
* AES-GCM test vectors from:

3
library/version_features.c
View File

@ -99,6 +99,9 @@ static const char *features[] = {
#if defined(MBEDTLS_DES_ALT)
"MBEDTLS_DES_ALT",
#endif /* MBEDTLS_DES_ALT */
#if defined(MBEDTLS_GCM_ALT)
"MBEDTLS_GCM_ALT",
#endif /* MBEDTLS_GCM_ALT */
#if defined(MBEDTLS_XTEA_ALT)
"MBEDTLS_XTEA_ALT",
#endif /* MBEDTLS_XTEA_ALT */