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Fix HkdfLabel comment

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Signed-off-by: Max Fillinger <maximilian.fillinger@foxcrypto.com>
This commit is contained in:
Max Fillinger 2024-12-02 19:26:13 +01:00
parent 5826883ca5
commit ee33b31f0b
1 changed files with 2 additions and 6 deletions
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8
library/ssl_tls13_keys.c
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@ -56,12 +56,8 @@ struct mbedtls_ssl_tls13_labels_struct const mbedtls_ssl_tls13_labels =
* }; * };
* *
* Parameters: * Parameters:
* - desired_length: Length of expanded key material * - desired_length: Length of expanded key material.
* Even though the standard allows expansion to up to * As the type implies, this must be less than 2**16 bytes.
* 2**16 Bytes, TLS 1.3 never uses expansion to more than
* 255 Bytes, so we require `desired_length` to be at most
* 255. This allows us to save a few Bytes of code by
* hardcoding the writing of the high bytes.
* - (label, label_len): label + label length, without "tls13 " prefix * - (label, label_len): label + label length, without "tls13 " prefix
* The label length MUST be less than or equal to * The label length MUST be less than or equal to
* MBEDTLS_SSL_TLS1_3_HKDF_LABEL_MAX_LABEL_LEN. * MBEDTLS_SSL_TLS1_3_HKDF_LABEL_MAX_LABEL_LEN.