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Stop supporting NIST_KW in cipher_auth_xxcrypt()

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Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This commit is contained in:
Manuel Pégourié-Gonnard
2020-12-01 09:57:55 +01:00
parent 53f10e70fd
commit f2ffbc4387
3 changed files with 54 additions and 41 deletions
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28
library/cipher.c
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@ -1491,16 +1491,10 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
if( MBEDTLS_MODE_KW == ctx->cipher_info->mode ||
MBEDTLS_MODE_KWP == ctx->cipher_info->mode )
{
mbedtls_nist_kw_mode_t mode = ( MBEDTLS_MODE_KW == ctx->cipher_info->mode ) ?
MBEDTLS_KW_MODE_KW : MBEDTLS_KW_MODE_KWP;
/* There is no iv, tag or ad associated with KW and KWP, these length should be 0 */
if( iv_len != 0 || tag_len != 0 || ad_len != 0 )
{
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
}
return( mbedtls_nist_kw_wrap( ctx->cipher_ctx, mode, input, ilen, output, olen, SIZE_MAX ) );
/* NIST_KW is not supported because we used to document the wrong size
* of the output buffer, so people should move to the _ext API,
* which has an explicit argument for buffer size. */
return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
}
#endif /* MBEDTLS_NIST_KW_C */
@ -1531,16 +1525,10 @@ int mbedtls_cipher_auth_decrypt( mbedtls_cipher_context_t *ctx,
if( MBEDTLS_MODE_KW == ctx->cipher_info->mode ||
MBEDTLS_MODE_KWP == ctx->cipher_info->mode )
{
mbedtls_nist_kw_mode_t mode = ( MBEDTLS_MODE_KW == ctx->cipher_info->mode ) ?
MBEDTLS_KW_MODE_KW : MBEDTLS_KW_MODE_KWP;
/* There is no iv, tag or ad associated with KW and KWP, these length should be 0 */
if( iv_len != 0 || tag_len != 0 || ad_len != 0 )
{
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
}
return( mbedtls_nist_kw_unwrap( ctx->cipher_ctx, mode, input, ilen, output, olen, SIZE_MAX ) );
/* NIST_KW is not supported because we used to document the wrong size
* of the output buffer, so people should move to the _ext API,
* which has an explicit argument for buffer size. */
return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
}
#endif /* MBEDTLS_NIST_KW_C */