lib/mbedtls
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Don't directly access iv_size

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman
2023-06-24 11:21:25 +01:00
parent 6c6c84212e
commit bb521fdbc9
5 changed files with 9 additions and 9 deletions
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6
library/cipher.c
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@ -375,7 +375,7 @@ int mbedtls_cipher_set_iv(mbedtls_cipher_context_t *ctx,
if ((ctx->cipher_info->flags & MBEDTLS_CIPHER_VARIABLE_IV_LEN) != 0) {
actual_iv_size = iv_len;
} else {
actual_iv_size = ctx->cipher_info->iv_size;
actual_iv_size = mbedtls_cipher_info_get_iv_size(ctx->cipher_info);
/* avoid reading past the end of input buffer */
if (actual_iv_size > iv_len) {
@ -1363,7 +1363,7 @@ static int mbedtls_cipher_aead_encrypt(mbedtls_cipher_context_t *ctx,
#if defined(MBEDTLS_CHACHAPOLY_C)
if (MBEDTLS_CIPHER_CHACHA20_POLY1305 == ctx->cipher_info->type) {
/* ChachaPoly has fixed length nonce and MAC (tag) */
if ((iv_len != ctx->cipher_info->iv_size) ||
if ((iv_len != mbedtls_cipher_info_get_iv_size(ctx->cipher_info)) ||
(tag_len != 16U)) {
return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
}
@ -1459,7 +1459,7 @@ static int mbedtls_cipher_aead_decrypt(mbedtls_cipher_context_t *ctx,
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
/* ChachaPoly has fixed length nonce and MAC (tag) */
if ((iv_len != ctx->cipher_info->iv_size) ||
if ((iv_len != mbedtls_cipher_info_get_iv_size(ctx->cipher_info)) ||
(tag_len != 16U)) {
return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
}