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Document precondition of nonce-generating function in ssl_msg.c

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Signed-off-by: Hanno Becker <hanno.becker@arm.com>
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Hanno Becker 2020-06-04 13:33:08 +01:00
parent 15952814d8
commit f486e28694
1 changed files with 7 additions and 0 deletions
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7
library/ssl_msg.c
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@ -565,6 +565,13 @@ static int ssl_transform_aead_dynamic_iv_is_explicit(
* This variant occurs in TLS 1.3 and for TLS 1.2 when using ChaChaPoly. * This variant occurs in TLS 1.3 and for TLS 1.2 when using ChaChaPoly.
* *
* See also the documentation of mbedtls_ssl_transform. * See also the documentation of mbedtls_ssl_transform.
*
* This function has the precondition that
*
* dst_iv_len >= max( fixed_iv_len, dynamic_iv_len )
*
* which has to be ensured by the caller. If this precondition
* violated, the behavior of this function is undefined.
*/ */
static void ssl_build_record_nonce( unsigned char *dst_iv, static void ssl_build_record_nonce( unsigned char *dst_iv,
size_t dst_iv_len, size_t dst_iv_len,