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Account for optional NULL buffer arguments in the Cipher module

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This commit is contained in:
k-stachowiak 2018-12-18 15:09:56 +01:00
parent d5913bc115
commit c29d94c7bf
1 changed files with 8 additions and 11 deletions
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19
library/cipher.c
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@ -254,9 +254,6 @@ int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv_len == 0 || iv != NULL );
if( NULL == iv && iv_len == 0 )
ctx->iv_size = 0;
/* avoid buffer overflow in ctx->iv */
if( iv_len > MBEDTLS_MAX_IV_LENGTH )
return( MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE );
@ -352,7 +349,7 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( ilen == 0 || input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
@ -902,7 +899,7 @@ int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx,
{
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( tag != NULL );
CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL );
if( MBEDTLS_ENCRYPT != ctx->operation )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
@ -935,7 +932,7 @@ int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx,
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( tag != NULL );
CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL );
if( MBEDTLS_DECRYPT != ctx->operation )
{
@ -1002,7 +999,7 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv_len == 0 || iv != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( ilen == 0 || input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
@ -1038,10 +1035,10 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv != NULL );
CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( ilen == 0 || input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
CIPHER_VALIDATE_RET( tag != NULL );
CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL );
#if defined(MBEDTLS_GCM_C)
if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode )
@ -1094,10 +1091,10 @@ int mbedtls_cipher_auth_decrypt( mbedtls_cipher_context_t *ctx,
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv != NULL );
CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( ilen == 0 || input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
CIPHER_VALIDATE_RET( tag != NULL );
CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL );
#if defined(MBEDTLS_GCM_C)
if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode )