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Merge pull request #4960 from mpg/cleanup-tls-cipher-psa-3.x

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Clean up some remnants of TLS pre-1.2 support
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Gilles Peskine 2021-10-19 21:59:15 +02:00 committed by GitHub
commit 9202ba37b1
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1 changed files with 26 additions and 55 deletions
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29
library/ssl_tls.c
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@ -973,15 +973,6 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
}
#if defined(MBEDTLS_USE_PSA_CRYPTO)
/* Only use PSA-based ciphers for TLS-1.2.
* That's relevant at least for TLS-1.0, where
* we assume that mbedtls_cipher_crypt() updates
* the structure field for the IV, which the PSA-based
* implementation currently doesn't. */
#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
{
ret = mbedtls_cipher_setup_psa( &transform->cipher_ctx_enc,
cipher_info, transform->taglen );
if( ret != 0 && ret != MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE )
@ -1000,12 +991,6 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Failed to setup PSA-based cipher context for record encryption - fall through to default setup." ) );
psa_fallthrough = 1;
}
}
else
psa_fallthrough = 1;
#else
psa_fallthrough = 1;
#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
if( psa_fallthrough == 1 )
#endif /* MBEDTLS_USE_PSA_CRYPTO */
@ -1017,14 +1002,6 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
}
#if defined(MBEDTLS_USE_PSA_CRYPTO)
/* Only use PSA-based ciphers for TLS-1.2.
* That's relevant at least for TLS-1.0, where
* we assume that mbedtls_cipher_crypt() updates
* the structure field for the IV, which the PSA-based
* implementation currently doesn't. */
#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
{
ret = mbedtls_cipher_setup_psa( &transform->cipher_ctx_dec,
cipher_info, transform->taglen );
if( ret != 0 && ret != MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE )
@ -1043,12 +1020,6 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Failed to setup PSA-based cipher context for record decryption - fall through to default setup." ) );
psa_fallthrough = 1;
}
}
else
psa_fallthrough = 1;
#else
psa_fallthrough = 1;
#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
if( psa_fallthrough == 1 )
#endif /* MBEDTLS_USE_PSA_CRYPTO */